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Selecting suitable procurement system for steel building construction
Abstract
Purpose
The purpose of this paper is to select a suitable procurement method for steel building construction in Sri Lanka following a systematic method which weigh, both procurement selection factors and existing procurement systems.
Design/methodology/approach
An abductive research stance is followed in this empirical study. Procurement selection factors were selected through a critical literature review which was followed by a quantitative questionnaire survey. The collected data were analysed using descriptive statistical analysis and relative important index.
Findings
The critical literature review outlined 46 procurement selection factors, out of which 26 factors were very important in steel building procurement selection. Short construction period and higher constructability of design are ranked at the top with the highest priority rating factors. Management-oriented procurement system was selected as the most appropriate procurement system for steel building constructions within the Sri Lankan context.
Research limitations/implications
The study is limited to widely use three procurement systems in Sri Lankan construction industry. Yet, the process followed in selecting the most appropriate procurement system could be applied for other contexts. The implications of the study are mainly identifying management-oriented procurement as the most suitable procurement method for steel building construction in Sri Lanka.
Practical implications
The systematic procedure of procurement method selection for steel building construction may use in the Sri Lankan construction industry to limit the resource loss due to wrong selection of procurement.
Originality/value
A study which critically and comprehensively presenting a procurement selection process for steel building construction is not recorded in Sri Lanka prior to this study.
... Procurement methods play a significant role in the construction industry. They govern the sourcing of material and labor, assign different responsibilities, and share risk among project participants to execute a project efficiently [19,20]. There are many forms of procurement methods. ...
... Masterman et al. [21] classified procurement methods into three main categories: separated, integrated, and management-based approaches. Figure 1 summarizes the arrangements of different procurement methods that were discussed in the literature [8,9,14,20]. Further details about the methods are discussed in the following paragraphs. ...
... Selecting the appropriate procurement approach could significantly influence the project's total duration, variations control, risk avoidance, and mitigation of adversarial relationships, and minimize possible issues during the project's implementation [20,28,29]. Several internal and external criteria must be considered by the project's client when selecting the procurement approach. ...
Off-site construction (OSC) is an innovative construction method that transfers most of the sitebased work to a more controlled environment. Construction waste minimization, speedy schedules, higher
sustainability, and better quality are some of the perceived benefits of OSC. Therefore, significant research
attention has been given to OSC. However, minimal research attention has been given to procurement
management in OSC, which could impact its pace of adoption. Existing studies on the procurement methods
of OSC projects have overlooked several criteria related to OSC that impact the selection of the appropriate
procurement methods (i.e., design-build, construction management, etc.). In addition, the literature lacks
decision-making tools to assist OSC practitioners in selecting the appropriate procurement method. In this
regard, this study contributes to the body of knowledge by (1) identifying the criteria that impact the
selection of OSC procurement methods; (2) developing a multi-criteria decision-making (MCDM) model to
select the appropriate OSC procurement methods. The developed MCDM model uses a hybrid approach of
analytic network process (ANP) and evidential reasoning (ER). The ANP, which considers the
interdependencies among the collected OSC procurement criteria, is used to calculate the relative
importance weights through questionnaire surveys. The ER method evaluates various OSC procurement
methods in accordance with the criteria importance weights. The results indicate that project quality, cost
control, and funding arrangement are the prominent selection factors. On the other hand, the model reveals
that the integrated project delivery (IPD) and construction management (CM) methods have the highest
utility scores. The MCDM model has been validated by comparing the results with similar studies. The present
study could assist OSC practitioners in selecting the appropriate procurement method for OSC projects.
... Procurement methods play a significant role in the construction industry. They govern the sourcing of material and labor, assign different responsibilities, and share risk among project participants to execute a project efficiently [19,20]. There are many forms of procurement methods. ...
... Masterman et al. [21] classified procurement methods into three main categories: separated, integrated, and management-based approaches. Figure 1 summarizes the arrangements of different procurement methods that were discussed in the literature [8,9,14,20]. Further details about the methods are discussed in the following paragraphs. ...
... Selecting the appropriate procurement approach could significantly influence the project's total duration, variations control, risk avoidance, and mitigation of adversarial relationships, and minimize possible issues during the project's implementation [20,28,29]. Several internal and external criteria must be considered by the project's client when selecting the procurement approach. ...
Off-site construction (OSC) is an innovative construction method that transfers most of the site-based work to a more controlled environment. Construction waste minimization, speedy schedules, higher sustainability, and better quality are some of the perceived benefits of OSC. Therefore, significant research attention has been given to OSC. However, minimal research attention has been given to procurement management in OSC, which could impact its pace of adoption. Existing studies on the procurement methods of OSC projects have overlooked several criteria related to OSC that impact the selection of the appropriate procurement methods (i.e., design-build, construction management, etc.). In addition, the literature lacks decision-making tools to assist OSC practitioners in selecting the appropriate procurement method. In this regard, this study contributes to the body of knowledge by (1) identifying the criteria that impact the selection of OSC procurement methods; (2) developing a multi-criteria decision-making (MCDM) model to select the appropriate OSC procurement methods. The developed MCDM model uses a hybrid approach of analytic network process (ANP) and evidential reasoning (ER). The ANP, which considers the interdependencies among the collected OSC procurement criteria, is used to calculate the relative importance weights through questionnaire surveys. The ER method evaluates various OSC procurement methods in accordance with the criteria importance weights. The results indicate that project quality, cost control, and funding arrangement are the prominent selection factors. On the other hand, the model reveals that the integrated project delivery (IPD) and construction management (CM) methods have the highest utility scores. The MCDM model has been validated by comparing the results with similar studies. The present study could assist OSC practitioners in selecting the appropriate procurement method for OSC projects.
... Unlike other industries, clients in the construction industry dictate the organizational and management pattern of project delivery [18,19]. Whereas there are standard practices and methods of delivering projects in industries like manufacturing and automobile [14], selecting procurement routes in the construction industry remains ambiguous [17,20]. According to [13], the procurement process in the construction industry is client-centered. ...
... For a suitable procurement choice to be made, it is essential to clearly understand the project objectives and relate their significance to the overall project's success [24,30]. Although comprehending CCs' rationale for undertaking construction projects may be complicated, the relevance of existing decision-making tools in selecting procurement routes also remains ambiguous [5,20]. To clearly address the complexity of construction procurement, it is essential to: ...
... According to [13], when the client type has been established, factors like the client's resources, project characteristics, ability to make changes, risk management, cost issues, timing, and quality assurance should be considered when evaluating the most appropriate procurement strategy. Although some of the factors may be in conflict and priorities need to be set, procurement route selection should consider the factors that are most important to the client [20,27,32]. ...
Procurement decision-making is a crucial determinant of project success. Although several objective, stage-based models have been proposed to guide clients’ procurement choices, little emphasis has been made on the subjective nature of construction clients. Recognizing the role of clients’ experiences in justifying procurement routes, this study develops a decision-making framework that is capable of guiding construction clients in making informed procurement choices. Adopting a mixed-method approach, comprising semi-structured interviews and multi-objective optimization, relevant procurement options were appraised based on clients’ specifications and project deliverables. The lived experiences of construction clients and the importance they attach to pre-defined selection rating criteria were subsequently evaluated, using a template that enables clients to prioritize procurement methods for different project types. The resultant framework offers a holistic, practical, and collaborative procurement selection process that promotes the efficient delivery of construction projects by reducing the cost overrun and delays associated with uninformed client decisions in construction procurement.
... Procurement is the procedure of fulfilment of the goods and services of a project or organisation for its successful operation (Perera et al. 2020). One of the widely accepted definitions of a procurement system was proposed by Masterman (2002), who identified the organisational structure adopted by the client for the implementation, and operation of a project, as a procurement system. ...
... Participant B also observed that lack of cooperation and the client's lack of knowledge are the main issues overall in procurement which leads to high project costs because the design information could be at the construction stage RIBA Stage 4. However, without the client's support in clarifying issues (Perera et al. 2020), such as responsibilities and confirmed requirements (Connaughton and Collinge 2021), costs will still be incurred during a later stage of the project. However, note that the views here are from those representing a construction contractor. ...
Purpose
Cost overrun is a significant issue in construction, an undesirable feature the industry has long been associated with. Poor procurement practices are often blamed for subsequent cost overruns in construction, especially with conventional procurement methods leading to outrageous cost overruns. The purpose of this study is to review the features of the new models of construction procurement (NMCP) and assess their potential to reduce cost overruns in construction projects.
Design/methodology/approach
A literature review was conducted to identify the issues of procurement leading to cost escalations. Primary data were obtained through exploratory, semi-structured interviews using a case study approach.
Findings
Clients’ lack of knowledge was highlighted as a key issue in procurement that interlinks with many factors causing cost escalation. The findings suggest that the features contained within the NMCP, such as early contractor involvement and collaboration throughout the project team, have the potential to make a positive contribution to addressing cost escalation in construction.
Research limitations/implications
The primary research was undertaken as an exploratory study and presents the contractor's perspective. Further research is therefore suggested, with multiple organisations representing all key stakeholders in a construction project, including clients, consultants, sub-contractors and suppliers.
Practical implications
The study recommends awareness of the NMCP be raised throughout the industry, and simplified information must be made available to help widen uptake of these contemporary procurement methods.
Originality/value
Addressing the dearth of research concerning the use of NMCP within the industry, this study makes a niche contribution to the body of knowledge on construction cost management by illustrating the potential offered by these new procurement methods for addressing cost escalation. For an industry where collaboration is accepted with reservations, this case study demonstrates how novel collaborative strategies such as open book costing, project bank accounts and shared pain and gain mechanisms can be implemented as part of the procurement strategy and how such strategies can contribute towards minimising the cost escalation inherent in construction projects.
... Several definitions can describe the construction procurement approaches. Jagtap et al. (2017) defined procurement approaches as the managerial process for the establishment and share risk among project participants to execute a project efficiently (Nugroho et al., 2020;G. Perera et al., 2020). There are many forms of procurement approaches. Masterman et al. (2003) classified the procurement approaches into three main categories: separated, integrated, and management-based approaches. In the separated procurement approach, the client has separate contracts with each one of the project participants, i.e., onsite contractor, ma ...
... Selecting the appropriate procurement approach could significantly influence the project's total duration, participants' financial stability, variations control, risk avoidance, mitigation of adversarial relationships, and minimize possible issues during the project's implementation (Adamtey, 2022;Ojo & Gbadebo, 2012;G. Perera et al., 2020). Several internal and external criteria must be considered by the project's client when selecting the procurement approach. It is argued that the ignorance of these criteria would result in disputes, schedule delays, and cost overruns (Thwala & Mathonsi, 2012). Initially, the selection of procurement approaches was primarily cost-orient ...
Offsite construction (OSC) is an innovative construction technique that transfers the site-based construction processes away from the jobsite into a more controlled environment. Prefabricated components, panelized elements, and fully prefabricated volumetric modules (modular construction) are some examples of OSC techniques. Numerous advantages are perceived by the adoption of OSC, such as minimizing construction waste, speedy construction, higher sustainability, and better quality. However, OSC techniques are characterized by a slow pace of adoption due to several barriers. These barriers are associated with complex supply chains, financial issues, cost uncertainty, lack of knowledge, etc. Accordingly, comprehensive literature has revealed that previous studies have overlooked the financial barriers of the OSC projects. These financial barriers are associated with the inconsistent cash flow of participants and unclear procurement approaches. Moreover, the adoption of advanced technologies, such as BIM and blockchain, in managing the cash flow of the OSC participants is yet to be addressed. Therefore, this research contributes to the body of knowledge by investigating the financial management and the appropriate contractual relationships (procurement approaches) in OSC projects. The study comprises four main objectives: 1) critically review the literature on construction cash flow management; 2) prioritize the criteria that govern the selection of procurement approaches in OSC projects; 3) Assess different procurement approaches according to the identified criteria; 4) develop an automated cash flow system that mitigates a number of OSC financial barriers.
A mixed review of literature on construction cash flow is adopted using scientometric and systematic review methods to fulfill the research's first objective. The scientometric analysis using science mapping has shown that more attention to the cash flow analysis has been gained in recent years and the United States and the United kingdom contributed most to cash flow research. The systematic analysis has resulted in creating five main categories, and integrating cash flow with schedule uncertainties was the dominant research theme. Consequently, five potential research frontiers are identified that motivated the current research. Two main models are developed to fulfill the rest of the research objectives. First, an MCDM model is developed to accurately assess the performance of various procurement approaches in OSC projects considering various criteria, i.e., project characteristics, cost, and schedule. The required data were collected through a questionnaire survey, while the analytic network process (ANP) and the evidential reasoning (ER) techniques were used to analyze the data. The model results indicate that the funding arrangements and the project quality are the prominent selection factors. On the other hand, the model reveals that the Integrated project delivery (IPD) and the construction management (CM) approaches have the highest utility score. The model results are verified by comparing them to similar studies.
Second, The result obtained from the MCDM model helped create the cash flow management model. The model integrates blockchain and BIM technologies to mitigate some identified OSC financial barriers considering the chosen procurement approach. 4D and 5D BIM models are developed to serve as information sources for the blockchain network. The network is established on the Hyperledger Fabric (HLF) platform using the Hyperledger Composer tool. In addition, a smart contract is developed to execute different transactions among the OSC participants. The developed system enables parties the make transaction securely, with no third-party involvement. The system also mitigates possible disputes by efficient documentation of the submitted claims with respect to a predefined endorsement policy. The developed model is validated by introducing a modular cable-stayed bridge case study. In addition, several scenarios are defined in the case study to test and validate the developed smart contract.
... The procurement process can include supplier evaluation criteria prioritising factors such as supplier reliability, financial stability, and risk management capabilities (Perera et al., 2021). By doing so, it ensures the selection of resilient suppliers and reduces the vulnerability of the SC to supplier-related disruptions. ...
Purpose
Offsite construction (OC) is an efficient method to reduce waste in the construction industry from a circular economy perspective. Yet, its uptake is subdued by the ambiguities around its supply chain. Hence, the purpose of this study is twofold: to identify the OC project delivery models, the limitations in their procurement approach to facilitate the resilience of the supply chain and interventions to promote supply chain resilience (SCR) and to identify the gaps in the existing procurement process and propose further research areas that implement strategies to improve SCR.
Design/methodology/approach
The study was conducted as a systematic literature review. In total, 41 peer-reviewed research papers published between 2013 and 2023 were shortlisted through the preferred reporting items for systematic reviews and meta-analysis guidelines. A descriptive analysis was conducted, followed by a thematic analysis.
Findings
The descriptive analysis reveals that the emphasis on digitising OC has shifted to transforming the business model, procurement and supply chain with a human-centric view. In thematic analysis, the predictability of the SC partners and the probabilities of evaluating the prospects are revealed as arbitrary characteristics in the current procurement strategies. Rewarding collaborative relationships among SC partners and incorporating provisions to postpone the module delivery are some interventions to promote flexibility. Drafting comprehensive and effective contracts that address transparency issues and facilitating the need for continuous development of capabilities through procurement are among the further research avenues proposed.
Originality/value
This study is a precursor demonstrating the potential of the procurement process to implement the decrees of SCR for better goal congruence of the OC supply chain.
... Within the context of Sri Lanka, there are number of studies carried out on procurement selection [43]. However, these studies were not focused on identifying the key factors that influence the procurement selection in Sri Lanka. ...
Procurement is the complete process of distributing responsibilities among stakeholders, organizations as well as all those contributing towards the clients’ satisfaction. The procurement method plays a major role in the construction industry. The application of the wrong procurement method could cause an unnecessary increment in the total cost for the client, disrupting outlined project schedules and creating undesirable situations for the client. Thus, selection of the most suitable procurement method is important for the success of any construction project. Selection of a procurement system usually takes long time due to consideration of numerous factors. However, analysing key procurement factors is helpful for clients who have limited time to finish the project. Hence, this research focuses on finding the most suitable procurement selection factors for private-sector commercial building projects in Sri Lanka. A comprehensive literature review was carried out to acquire the knowledge on existing procurement methods and procurement selection factors. Thereafter, the study incorporated expert interviews to identify, analyse, and validate the key procurement selection factors. Purposive sampling was selected as the sampling technique, and 13 experts were interviewed through online. The main four procurement systems were identified as traditional, integrated, management oriented, and collaborative procurement systems. Each procurement method has different characteristics which make them different from one another. The selection of a procurement method is different due to various procurement selection factors which vary from project to project. These factors include speed, cost, quality, risk allocation, responsibility, accountability, price certainty, and market competition for the project, regulatory environment, public accountability, culture, government policy, disputes and arbitration, availability of experience contractor, policy or objective of organization, technology, and many more. Within the context of Sri Lanka, speed, nature, scope, and complexity, price certainty, and risk and responsibility were revealed as the most important procurement selection factors. Moreover, these procurement selection factors were identified as key factors internationally.
... The benefits include but are not limited to transparent and manageable risks and opportunities, more appropriate and buildable solutions, enhanced innovation, staff/stakeholder satisfaction, enhanced problem solving and resolution. Cost and time savings have been mentioned by most of the scholars as common benefits of collaborative work (Perera et al., 2020, Constructing Excellence, 2019b, Ellies 2018, Norberg-Johnson 2015and Hughes et al., 2012. Bresnen and Marshall (2000a) have observed that the procurement method selected for a construction project has a significant impact on the level of collaboration achieved throughout the project. ...
Purpose
The lack of collaborative working within the UK construction industry is a long-standing issue that has often been highlighted. As a result, the construction industry in the UK is encouraged to use novel procurement methods to create a collaborative working environment. This study aims to explore the collaborative features of the three new models of construction procurement introduced by the UK Government Construction Strategy in 2012.
Design/methodology/approach
Existing research/literature was reviewed to establish the key collaborative features of the new procurement models, and a questionnaire survey was adopted to obtain views of industry practitioners. A Relative Importance Index was used to analyse the collected data.
Findings
The sample of construction practitioners surveyed largely agrees with the effectiveness of collaborative features integrated within the models, with the benefits offered by early contractor involvement being seen as the most effective feature allowing collaboration. Contractual incentives, improved communication procedures and constant reflection and feedback can be used as effective strategies to enable greater collaboration in projects that use these new procurement models.
Research limitations/implications
Findings reported in the paper could help achieve greater collaboration in construction projects executed using the new models of construction procurement.
Originality/value
This study sheds light on the scepticism and/or conviction of industry practitioners regarding the collaborative benefits offered by the new procurement models, which have not yet been subjected to significant academic scrutiny.
... Participants were invited to provide their opinions of: (1) tendering and procurement, and the reasons for changes; and (2) the procurement route used, and whether they deemed this to have been a factor influencing the success of the project. This abductive approach [109] allowed evidence to be drawn together in order to derive reasoned conclusions. ...
This research explores the failure of competitively tendered projects in the UK construction industry to procure the most suited contractor(s) to conduct the works. Such work may have equal relevance for other developed nations globally. This research seeks to teach clients and their representatives that "lowest price" does not mean "best value", by presenting a case study of a successfully negotiated tender undertaken by a small-to-medium enterprise (SME) contractor; SME studies are relatively scant in academic literature. By applying the "lessons learnt" principle, this study seeks to improve future practice through the development of a novel alternative procurement option (i.e., negotiation). A mixed philosophical stance combining interpretivism and pragmatism was used-interpretivism to critically review literature in order to form the basis of inductive research to discuss negotiation as a viable procurement route, and pragmatism to analyse perceptions of tendering and procurement. The methods used follow a three-stage waterfall process including: (1) literature review and pilot study; (2) quantitative analysis of case study data; and (3) qualitative data collection via a focus group. Our research underscores the need to advise clients and their representatives of the importance of understanding the scope of works allowed within a tender submission before discounting it based solely on price. In addition, we highlight the failings of competitive tendering, which results in increased costs and project duration once the works commence on site. These findings provide new contemporary insight into procurement and tendering in the construction industry, with emphasis on SME contractors, existing relationships, and open-book negotiation. This research illustrates the adverse effects of early cost estimates produced without first securing a true understanding of project buildability and programming. Our work concludes with a novel insight into an alternative procurement option that involves early SME contractor involvement in an open-book environment, without the need for a third-party cost control.
The modern construction industry in Sri Lanka focuses on introducing environment friendly and long durable sustainable materials in constructions. Modern trend is producing different types of earth soil-based building blocks and innovating modified daub mixture-based structures. However, surface cracking and damage due to flood are the major issues that are faced in some soil-based structures. The use of cellulose fiber as a reinforcement material has many advantages such as providing adequate stiffness, strength, and bonding capacity to cement-based matrices for substantial enhancement of their flexural strength. The aim of present study was to find out the possibility of using Alkaline Hydrogen Peroxide (AHP)-pretreated cornhusk fibers as a reinforcement material to prepare soil and cement-based composite mixture for development of roofing sheets, ceiling sheets, and wall panels. The AHP pretreatment is an effective pretreatment that could be performed at room temperature and under atmospheric pressure for extracting cellulose from agro plant residue like cornhusks. Cornhusks is comparatively one of freely available agro plant residues in Sri Lanka and with required chemical composition, from which cellulose could be extracted easily from AHP pretreatment. The selected earth soil was laterite and has dark reddish color. The composite mixture was prepared by mixing of earth soil, cement, and AHP-pretreated cornhusks fibers in the weight ratios of 1:1:0.025 of, respectively, with a certain amount of water. Roofing sheets, ceiling sheets, and wall panels were prepared using the said composite mixture and were analyzed for morphological characteristics, water absorbency, flexural load, and durability. The developed composite samples have reddish to brownish color. The water absorbency, flexural load, and durability were of satisfactory level. These can be used in construction of low cost attractive and environment friendly architectural constructions especially in areas where tourists frequent in Sri Lanka.
Sustainable residential development requires a balance between the increasing demand for housing and the efficient use of materials and resources. The increasing use of industrialized building systems (IBSs) through new building techniques and materials holds high potential as an optimum construction alternative. Although considerable research has been conducted on industrialized buildings, very few studies have focused on low- and mid-rise residential buildings. Therefore, this paper aims to fill this gap. An extensive literature review was conducted to identify the critical success factors (CSFs) followed by an interview to discuss and validate the collected factors. This study resulted in twenty-six factors grouped into five CSFs comprising planning and control, roles and responsibilities, policies and incentives, industry maturity and technology advancement. In addition, 219 survey responses were collected and analyzed. Three factors were perceived differently among organizations including commitment toward IBS policy, implementation of preferential policy for IBSs and imposition of higher taxes on waste dumping. The top five CSFs were early planning to implement IBSs, extended training for local labor, effective communication among project players, project location evaluation and accessibility and standardized design concept adoption. The findings of this paper will help policymakers to review current practices and help develop a roadmap for sustainable IBS development for all industry organizations.
The procurement of goods is an important activity in maintaining the company's survival, especially in the manufacturing industry. Delay in the acquisition of goods may cause interruption to plant operations. This study aims to find out and analyze the cause of delay in the procurement of goods. The type of investigation used is qualitative descriptive with the subject of inquiry is the person who is directly related to the process of acquiring goods at Steel Manufacturing Companies, which is the employee in the Procurement Division. The results indicate that the main cause of the postponement problems in the procurement of goods is because the process does not use the e-procurement system in the purchase process with a percentage of the cause of a 22 % delay. For the manager as decision-makers need to take on the basis of improvement such as improving the level of cooperation with consumers.
To improve the constructability and performance of modular buildings, a number of inter-module connections have been developed, each with their own associated advantages and disadvantages. Interlocking inter-module connections have emerged as a promising type of improvement; however, it is not clear how to provide the required installation tolerance without allowing slip. At the same time, the existing model for the shear force-slip behaviour is known to be inadequate. This study introduces a novel interlocking inter-module connection which combines structural bolts with interlocking elements to improve the constructability and shear force-slip behaviour. An experimental study was conducted to investigate the shear force-slip behaviour of the proposed connection. The effects of the interlocking elements, bolt preload, hole tolerance, and fabrication and assembly tolerance on the shear behaviour are evaluated and discussed. Numerical simulations were carried out to support the experimental program, following which the distinguishing features of the force-slip behaviour were examined, and an empirical model was proposed.
There has been considerable recent interest in methods of determining sample size for qualitative research a priori, rather than through an adaptive approach such as saturation. Extending previous literature in this area, we identify four distinct approaches to determining sample size in this way: rules of thumb, conceptual models, numerical guidelines derived from empirical studies, and statistical formulae. Through critical discussion of these approaches, we argue that each embodies one or more questionable philosophical or methodological assumptions, namely: a naïve realist ontology; a focus on themes as enumerable ‘instances’, rather than in more conceptual terms; an incompatibility with an inductive approach to analysis; inappropriate statistical assumptions in the use of formulae; and an unwarranted assumption of generality across qualitative methods. We conclude that, whilst meeting certain practical demands, determining qualitative sample size a priori is an inherently problematic approach, especially in more interpretive models of qualitative research.
The selection of an appropriate procurement method is becoming an increasingly important issue due to complex decision making that clients are facing early in the lifecycle of construction projects. The aim of this paper is to improve the procurement system in the construction industry by developing a model using the multi-attribute utility theory (MAUT) as a decision support system for the selection of an appropriate procurement method for construction projects in the Gaza Strip. Factors that influence the selection of an appropriate method for construction projects in the Gaza Strip are identified and the results indicate that the most significant six factors influencing the selection of procurement methods in the Gaza Strip construction projects are price competition, degree of project complexity, time constraints of the project, project size, client financial capability and client experience in procurement methods. The study concludes that there is no variety of procurement methods used in the Gaza Strip construction industry, as a traditional procurement method is preferred. This is because most professionals in the Gaza Strip are not familiar or experienced with alternative procurement methods. A model was developed using the MAUT to select the most appropriate procurement method. The MAUT as a decision support system was successful in identifying the appropriate procurement method.
The construction industry contributes the largest portion of waste to landfill, and it consumes a significant proportion of mineral resources excavated from nature. Due to adverse environmental impacts of waste generation, as well as financial gains associated with its minimization, waste intensiveness of the industry has remained a major concern across nations. This study investigates the design, procurement and construction strategies for waste minimization, using a dynamic approach. Apart from an investigation of the key and underlying measures for construction waste mitigation, the study considers the interrelationship between stages of projects' lifecycle. This is as activities carried out at an earlier stage are capable of engendering occurrences at later stages of the dynamic project delivery processes.
Following the tenets of critical realism philosophy and exploratory sequential mixed method, the study combined qualitative and quantitative approaches at intensive and extensive stages respectively. At the early stage of the study, data were collected through literature review and focus group discussions with industry experts. Results of the qualitative study were used to develop a questionnaire, which was analysed using statistical approach and structural equation modelling. As a means of investigating the key drivers of waste minimization at a holistic level, a system dynamic model was developed to simulate the interplay and effects of different strategies that were confirmed through the previous process.
The study suggests that design stage has the most decisive impacts on construction waste minimization. At this stage, the key dimensions for designing out waste include design for modern methods of construction, collaborative design process, design for standardisation and waste-efficient design documentation. Error-free design and involvement of contractors at early design stage are part of the critical success factors for designing out waste. With design being much important for waste minimization, competencies of design in terms of waste behavioural competency, design task proficiency, construction-related knowledge and inter-professional collaborative competency are essential for designing out waste. Materials procurement process could enhance waste minimization by considering its key dimensions for driving waste-efficient projects, which includes waste-efficient materials purchase management, suppliers' alliance and waste-efficient bill of quantity. Efficient materials take-off and take back scheme are confirmed as critical success factors for driving waste minimization through materials procurement processes. During construction activities, waste could be reduced through prefabrication and offsite technology, contractual requirements, maximisation of materials reuse and improved collaboration, among others. Prefabrication, supply chain alliance and collaborative procurement routes are confirmed as the critical success factors for reducing waste during construction process. Dynamic interplay among these sets of strategies suggests that notwithstanding the significance of the different measures during design, procurement and construction processes, prefabrication technology and collaborative procurement route are the holistic drivers of construction waste minimisation.
The study implies that designers could effectively drive waste minimization through dimensional coordination and standardisation of design in line with standard materials supplies. In addition to the need for prefabrication and offsite technologies, increasing collaboration among project team is requisite to reducing waste generated by construction activities. By implementing the strategies suggested in the study, substantial proportion of construction waste would be diverted from landfill.
Steel structural projects are relatively special field of construction projects. The steel structure projects differ from conventional structural engineering projects mainly in the special problems that have to be considered during construction, transportation, installation and operation. The productivity improvements are attributed to the technology advances in equipment and construction methods over the last two decades. Steel structural projects are a relatively special field of construction projects. There are many factors that impact on productivity in this field. The construction industry especially the construction of steel structure projects is rated as one of the key industries. It helps in developing and achieving the goal of society. Study and knowledge of construction productivity are very important because they influence the economics of the construction industry; this is because prior knowledge of crew productivity during construction can save money and time. Investments for these projects are very high and because of the complexity in construction of steel structure projects, various factors can highly affect overall productivity, thus the project can end up adding even more time and money in order to be completed. The main purpose of this paper is present a methodology for modeling on Mat lab to construction performance control for construction process of steel structure based on the several factors that affect the steel structure processes. The Mat lab model is used for controlling on construction productivity of steel structure projects. The construction industry may use the findings of this paper as a basis for controlling and improving productivity and construction performance for the construction of steel structure projects. The ability of the estimating team to accurately determine productivity for different activities will have a significant impact on crew cost component, time schedule of the project and improve projects’ performance. The use of the Mat lab model is expected to result in savings in cost and time schedule of construction of steel structure projects as well as savings in the cost of the overall project.
Purpose of this paper: Procurement systems are vital in ensuring the successful implementation of construction projects precisely in all the phases of any particular project. Therefore, this paper aims to investigate in a systematic manner the factors that influence the selection of a procurement system in the South African construction industry. Research methodology: An extensive theory and literature review of procurement systems was conducted. The literature reviewed included a sample of case studies of procurement systems successfully implemented in completed building and civil engineering projects in South Africa. A questionnaire using a four-round Delphi survey method was used to conduct the empirical study in order to obtain participants' opinions about factors influencing the selection of procurement systems as well as the utility value of various procurement systems on each factor as identified. Finally, data analysis of both qualitative and quantitative techniques was performed using the Statistical Package for Social Sciences (SPSS). Findings: After qualitative analysis, findings of the literature reviewed suggest that factors that influence the selection of procurement systems cut across all the phases of the project as identified in this paper. Therefore, these factors are categorically classified into internal and external factors. Factors from the internal environment were further classified into client characteristics and project characteristics, with client characteristics comprising of variables such as clients' level of knowledge and control, political and social consideration, familiarity of procurement systems, competition, funding arrangement, government public/private sector projects and risk allocation whereas project characteristics comprise of factors (variables) such as size and technical complexity of the project, influence of the project life cycle, expedited project delivery, time, quality and price certainty. Factors from the external environment include variables such as market competition, information technology, regulatory environment, natural causes and globalisation. Research limitations: In terms of its scope this study focused on both national and international literature reviews and the empirical survey of this study was conducted within South Africa. Its target participants were limited to civil engineers, quantity surveyors, construction/project managers, architects and contractors located in three provinces of South Africa, namely Gauteng, Mpumalanga and Limpopo Provinces. Value: This study investigates factors that influence the selection of procurement systems in South Africa for the purpose of assisting and guiding construction practitioners in selecting suitable procurement systems for their planned projects. Conclusion: This study demonstrated that due to changes in the construction industry both factors from the internal and external environments such as size and complexity of construction projects, macro and micro economic conditions, political and social and information technology prevailing, traditional procurement method need to be supplemented with contemporary procurement systems in order to meet the new demands of the industry.
Even though, Sri Lanka was believed to have no seismic threats, it is now realized that Sri Lanka can no longer be considered as a country safe from seismic threats following the recent events that occurred in and around the island. The present study is therefore aimed at providing guidance on suitable analysis procedure for buildings in Sri Lanka where the seismic consideration is explicitly warranted for a structure. The proposed guidelines in this study are based on Euro Code 8 (EN 1998-1: 2004): “Design of Structures for Earthquake Resistance”. Euro Code 8 was selected for this purpose as it allows national choices in defining seismic characteristics such as peak ground accelerations, response spectra, etc. in seismic design procedure. This study mainly focuses on these national choices and suitable values are proposed and discussed, depending on the available seismic data in Sri Lanka. Whenever there is a lack of data, suitable approaches are suggested comparing similar seismic codes such as IS 1893-1: 2002 and AS 1170.4: 2007. Finally, two case studies are carried out in order to illustrate how the developed guidelines can be used in the seismic design procedure of buildings particularly in Sri Lanka. ENGINEER, Vol. 48, No.01, pp. 39-48, 2015
The implications for analysis of innovation in construction of theoretical developments in industrial organisation are considered in this research, as an attempt to outline a new approach to construction innovation incorporating the ideas found in knowledge based, technology centred models. The paper firstly summarises characteristics of the construction industry, focusing on their effects on innovation, before surveying some of the ideas about the sources of innovation and the expansion and application of knowledge. Construction can be seen as an industry with limited scope for knowledge externalities, where the procurement methods used by the industry’s clients do not pay for innovation. The following discussion uses recent developments in the research on the economics of innovation and industrial organization theory, such as research intensity and the endogenous sunk costs in competitive, fragmented, low research intensity industries. The effects on R&D of procurement methods and on industry structure are discussed, with a focus on the appropriability of innovations and the role of the client on the Heathrow Terminal 5 project. The paper concludes that the procurement methods used for building and construction projects appears to be a determining factor in the level of innovation in the construction industry
Abstract:
This research investigated the impacts of procurement systems on the performance of construction projects in East Malaysia. Construction project outcome may be measured in terms of time,cost and quality achieved. Project clients demand and want best value for their money and they want their projects to be completed on time, within budgeted cost and at appropriate quality or specification.The sample in this research consists of 58 participants that work in a construction companies/industry.90 questionnaires were distributed, 69 were successfully returned and 58 were fully completed. Thesample comprises project clients/owners, project managers, consultants and construction workers.However, due to the fact that the time allocated for this research is limited and it is of qualitative in naturefor which the sample size is less important (Kumar, 2005). The aim of using project clients, project managers, consultants and construction workers from different companies is because they work underdifferent circumstances, which will ensure all questions are answered from different perspective.Therefore, the researcher distributed questionnaires randomly among the participants in different construction companies. This also minimises any bias towards any particular company. The key findingsand conclusions from literature review and the analysis of results of questionnaires issued to project clients, projects managers, consultants and construction workers showed that traditional procurement system benefits cost and quality but at the expense of time. In other words, traditional procurement system has positive impacts on project objectives of cost and quality and negative impact on project time.Design and build procurement system benefits cost and time but at the expense of quality and this impliesthat the impacts of design and build procurement system on project objectives of cost and time arepositive with negative impact on project quality.
The construction industry is one of the backbones of the economy of many countries. The industry's characterization is determined by the external environment in which it operates. Therefore, the development and the use of project procurement systems are affected by such environmental factors. These environmental factors influence the industry in various ways thus determining the procurement shares and trends. Therefore, examination of such factors influencing the procurement selection in the construction industry is critical for the successful outcome of a project as well as to the development of the industry. In this context, the aim of this paper is to examine the significant factors influencing the selection of procurement systems from external environment. Four rounds of Delphi survey were conducted to investigate the most significant factors from external environment and their level of influence on various construction procurement systems in Sri Lanka. In addition, few interviews were conducted with selected industry experts in the view of interpreting the results derived from Delphi survey. It was found that the external environment significantly influence the selection of procurement system for any kind of projects. A statistically significant consensus on the weighting of the utility values for each procurement system was obtained from 25 experts from the industry. Based on the Delphi survey results, a set of exclusive selection criteria for five factor categories was established. The five factor categories formulated from this study include 'Market condition', 'Economic condition & Fiscal policy', 'Technology', 'Socio cultural suitability' and Regulatory environment'. Further, it was also found that Market conditions have significant influence on procurement selection compared to others factors. Therefore, it can be concluded that beside the commonly considered factors in terms of key selection criteria like client's requirements and project profile, clients should take into account other factors from the operating external environment that influence the procurement selection.
It is widely accepted that a project is successful when it is finished on time. But, a large number of projects fail to meet their original contact time in Sri Lankan building construction industry. Delay in the completion of a construction project can be a major problem for contractors, consultants as well as for clients. These delays lead to costly disputes and adverse relationships amongst project participants. Therefore a comprehensive survey was carried out to identify the critical factors that cause the delays in Sri Lankan building construction projects. From in-depth literature studies, 52 causes of delay were identified. Questionnaire survey was carried out among 58 selected building construction projects in Sri Lanka. The findings show that the delay in building construction projects in Sri Lanka is mostly originated by labour, followed by contractor and material, while consultant and external related causes are less important. This paper also explores and provides some recommendations to reduce the impact of delays on building construction projects in Sri Lanka.
In design-build (DB), owners use procurement methods such as best value, qualification-based and sole source to offer a more objective approach when selecting design-builders. The aim of this study was to provide an empirical analysis that can assist the procurement method decision by examining how different project characteristics influence the procurement method selection and comparing DB project performance within the different procurement methods. The study statistically analyzed 160 DB projects completed between 2008 and 2019 worth over $14 billion. The results showed that best value is the most predominantly used procurement method and project characteristics such as project type, owner type, and contract method affect the selection of procurement methods significantly. Best value procurement is more likely to use lump sum contracts while qualification based is more likely to use GMP. Civil infrastructure projects and public owners tend to use best value more frequently while private owners use qualification based more often. In terms of performance comparison, projects with qualification-based procurement have better schedule performance while those with sole source have better cost performance. The findings provide practical considerations for owners in selecting the right procurement method for their projects, which can lead to improved delivery of DB projects.
Team integration correlates with the contractual relationships in construction procurement systems (CPSs). However, it is unclear how CPSs can influence team integration in off-site manufacturing (OSM) projects. To address the research gap, this research aims to investigate the team integration issue in OSM projects from the perspective of CPSs. The research objectives are to (a) examine team integration performance of commonly used CPSs and (b) develop integrated CPS frameworks for OSM projects. The contractual relationships of eight common CPSs were identified and analysed using content analysis. These contractual relationships were further analysed using Social Network Analysis. The research findings show Design-Build procurement system has the higher ability to integrate project parties in OSM projects than other CPSs. In all CPSs’ networks, project owners rely on their central positions to play crucial roles in team integration. However, the roles of manufacturers in promoting team integration are restricted due to their remote positions in these networks. Two integrated frameworks of CPSs were developed through engaging the two entities, namely ‘manufacture-builder’ and ‘manufacture-design-builder’, into the CPS networks. The research extends the current body of knowledge pertaining to team integration in OSM projects from the perspective of CPSs.
Purpose
The purpose of this paper is to identify, analyse and categorize the major factors affecting lean procurement (LP) in a construction project of a company in India using total interpretive structural modelling (TISM) approach. The readiness factors identified help the managers to recognize the areas that lack, i.e. purchase, stocks and receipts, and provide importance to the successful implementation of LP in those areas. This study further intends to examine the hierarchical interrelationships among the factors identified using dependence and driving power.
Design/methodology/approach
Ten factors were identified from literature review, and expert opinions were collected from the organization which is in construction phase in India. Scheduled interviews were conducted based on questionnaire survey in the organizations to identify the relevance of the relations among the factors. Matrix impact cross-multiplication applied to classification analysis uses dependence and driving power to understand the hierarchical relationship among the factors identified.
Findings
Results indicate that supplier selection is the key readiness factor for LP. The manager needs to concentrate more on readiness factors to formulate execution process of LP for the betterment of the construction project undergoing organization in India. The readiness factors help the manager to identify the target area for LP execution.
Practical implications
This study would be useful for researchers and practitioners to understand the readiness factors before starting the implementation process of LP in construction projects. The managers of companies undergoing construction project can use the outcome of the present study to implement LP in a competent way. Basing the priorities of attention on the ten readiness LP factors in the appropriate order of importance, as suggested by this study, can give project managers a more scientific basis in which to specify the level of attention required for each of the factors to implement readiness in LP.
Originality/value
The present study identifies the readiness factors related to LP, especially for construction project. None of the researchers have studied readiness factors of LP for organizations undergoing construction projects. This is the first attempt made to analyze the relationship between LP readiness factors and TISM approach in construction project organization.
This paper focuses on a new lateral-force-resisting system – the Self-Centering Energy-Absorbing Rigid Core system (denoted as the SCENARIO system)-for achieving enhanced seismic performance and improved post-earthquake reparability in low-rise steel building frames. Friction-Spring Dampers (FSDs) are included in the SCENARIO system to achieve the self-centering feature and dissipate hysteretic energy. Moreover, Buckling Restrained Braces (BRBs) are included in the SCENARIO system to absorb earthquake energy if needed. A design procedure was proposed for the SCENARIO system. Results from Nonlinear Static Analyses (NSA) show that the design procedure can enable the SCENARIO system to exhibit the intended nonlinear behavior. A representative three-story demonstration building was considered in this research to investigate the seismic response of the low-rise steel buildings with the SCENARIO systems to resist the lateral seismic forces. Three designs adopting different response modification factors to determine the design base shears were performed for the demonstration building. Results from Nonlinear Response History Analyses (NRHA) of the considered systems show that the SCENARIO systems can exhibit satisfactory seismic responses when designed with the response modifications factors of 6 and 8 which are assigned to conventional steel braced frames. Moreover, it was found that the residual inter-story drift ratios of the SCENARIO system can be lower than 0.005 rad even under the MCE excitations, creating a satisfactory condition for the post-earthquake repair work if necessary.
Construction procurement involves organizing processes of acquiring services and products for activities starting from project investigation to completion of a project. Along with the development of new concepts and technologies, construction procurement arrangements were also developed to draw the best value for construction organizations. Selecting the best procurement method for a specific project is a challenge since the availability of diverse procurement options and subjective factors affecting the selection of procurement methods. An inappropriate selection of a procurement method leads to project failure while adversely affecting the expectation of stakeholders and the economy. Since the number of steel building constructions are increasing in the Sri Lankan context this study aims to identify factors which highly influence the selection of a procurement method for steel building construction in Sri Lanka. In order to achieve the aim, initially, a comprehensive literature survey was carried out to identify factors which influence the procurement selection for building construction. Accordingly, 42 factors were identified. Subsequently, a quantitative research approach was followed to list down the factors on their significance in selecting procurement method for steel building construction in Sri Lanka. Consequently, 26 factors were concluded as the most significant factors, which influence the procurement selection of steel building construction through Relative Importance Index (RII). Procurement Path Decision Chart was used to analyses the procurement selection factor and construction management was identified as the most suitable procurement method for steel building construction in Sri Lanka.
Purpose
Governments of many developing countries that are unable to develop their infrastructure in order to obtain financial resources prefer to establish public–private partnerships (PPPs) for providing the much-required infrastructure. Time is thus opportune for Sri Lanka, which is also a developing country, to make use of PPPs to develop its road network. The purpose of this paper is, therefore, to identify the PPP models that suit road construction in Sri Lanka.
Design/methodology/approach
The study used a mixed approach. The characteristics of road construction, procurement selection factors to be considered in road construction, and the different PPP models that can be used for such procurements were identified through a comprehensive literature synthesis. The findings were validated using expert interviews. A questionnaire survey identified the PPP models that suit road construction in Sri Lanka. The most suitable model among them was identified by ranking the PPP models using procurement selection factors.
Findings
Build–Own–Operate–Transfer was identified as the PPP model that best suits road construction in Sri Lanka. However, investors may not find it attractive because of its high payback period, a result of the low traffic volume in Sri Lanka. Therefore, a PPP model that involves road construction alone will not be feasible in Sri Lanka. It will have to include the construction of other infrastructure as well.
Originality/value
The study identifies a PPP model that best suits the road construction projects in Sri Lanka.
Abstract Purpose – Governments of many developing countries that are unable to develop their infrastructure in order to obtain financial resources prefer to establish public–private partnerships (PPPs) for providing the much-required infrastructure. Time is thus opportune for Sri Lanka, which is also a developing country, to make use of PPPs to develop its road network.
The purpose of this paper is, therefore, to identify the PPP models that suit road construction in Sri Lanka.
Design/methodology/approach – The study used a mixed approach. The characteristics of road construction, procurement selection factors to be considered in road construction, and the different PPP models that can be used for such procurements were identified through a comprehensive literature synthesis. The findings were validated using expert interviews. A questionnaire survey identified the PPP models that suit road construction in Sri Lanka. The most suitable model among them wasidentifiedby rankingthe PPP models using procurement selection factors. Findings – Build–Own–Operate–Transfer was identified as the PPP model that best suits road construction in Sri Lanka. However, investors may not find it attractive because of its high payback period, a result of the low traffic volume in Sri Lanka. Therefore, a PPP model that involves road construction alone will not be feasible in Sri Lanka. It will have to include the construction of other infrastructure as well. Originality/value – The study identifies a PPP model that best suits the road construction projects in Sri Lanka.
Keywords Sri Lanka, Public–private partnership (PPP), Road projects, Build–Own–Operate–Transfer (BOOT), Overall suitability, Procurement selection factors Paper type Research paper
Glass transition temperature (Tg) of the bond between CFRP and steel influences on the service and fire performance of strengthened members. A total of eighty-two CFRP/steel double strap joints were prepared and tested under elevated temperature. They were cured under a range of elevated temperature conditions in the control laboratory environment and in the open environment which is practically feasible in large civil engineering structures. The test results showed a similar trend of reductions in the bond strength, Poisson’s ratio and Elastic modulus of CFRP/steel joint with the exposure to the elevated temperature. More than 50% reduction in the Poisson’s ratio, elastic modulus and the bond strength was noted when the bond line temperature exceeds Tg+15 °C, irrespective of the curing time and curing conditions. Initial elevated temperature curing also causes for shifting the curves in the right-skewed direction. A significant increase in Tg of bond was noted with 4 h initial curing at 75 °C, i.e. Tg+20 °C.
Purpose
The purpose of this study is to investigate how procurement strategies may be designed to facilitate exploration and exploitation in construction projects.
Design/methodology/approach
This paper is based on a literature review of organizational research and construction management literature together with a brief interview study of Swedish clients and contractors.
Findings
The theoretical and empirical findings propose that small and simple projects with low uncertainty and scarce resources may focus on exploitation to enhance short-term efficiency through traditional procurement strategies including delivery systems that separate the actors and their activities (i.e. pure design-build- or design-bid-build-contracts), fixed price payment and price focus in bid evaluation. Large complex projects with high uncertainty and customization benefit from combining exploration and exploitation to enhance sustainable performance. This requires collaborative procurement strategies including joint specification through early contractor involvement, cost reimbursement coupled with incentive-based payment, bid evaluation based on multiple criteria and collaborative tools and activities in partnering arrangements.
Research limitations/implications
This paper contributes to organizational learning literature by pinpointing the need for integrating procurement strategies that enhance combination of exploration and exploitation. The main contribution to the construction management literature involves the investigation of how procurement strategies may affect exploration and exploitation, as identified and articulated in the propositions developed in this paper.
Practical implications
From a practical perspective, the findings highlight the importance of tailoring procurement strategies to project characteristics to enhance a suitable balance between exploration and exploitation in construction projects.
Originality/value
The explicit focus on the operational project-level is uncommon but relevant in organizational learning literature.
The mechanisms of supply chains are omnipresent, but procurementcentric supply-chain management has received little attention in the construction industry, despite its economic weight. A procurement centric construction supply chain requires client integration and contractor integration to cope with the project complexity and project uncertainty. In this regard, procurement-led supply-chain initiatives using mediated power and non-mediated power of the client organisation can influence contractor integration and project performance. A structural equation model consisting of two exogenous variables - mediated power and non-mediated power of client - and three endogenous variables - client integration, contractor integration and project performance - is developed based on theoretical support. The data are collected from 244 construction professionals working in a variety of construction projects across India. The result of the study suggests that, the use of mediated power by the client organisation accompanied by the involvement of the client in the project relates to the improving of project performance.
Procurement is a key process in a construction project that creates and manages contacts. Procurement activities span from identification of requirements to project closeout, making it a perfect mode for integrating organizational strategic directions. Lately, the strategic importance of procurement has been widely acknowledged by academics as well as industry professionals. Construction procurement is a complex process with a large number of available options and directions. Ad hoc statistics show that modern initiatives such as sustainability, life-cycle costing, and standardization are getting integrated with procurement. However, there is no unified view in the construction industry on procurement as a project process. This paper presents a comprehensive review of traditional and emerging procurement practices in the construction industry. The current procurement practices are analyzed by separating into three segments; processes, methods, and policies. Furthermore, strengths and weaknesses of the traditional procurement methods are reviewed in detail. As the final section, contemporary developments in construction procurement are investigated. This article consolidates detailed knowledge of construction procurement that is identified as a knowledge gap in the literature.
Several Literatures in construction management support the view that procurements have impacts on project performance. Aim of this study is to investigate the effects of procurement related factors of procurement selection criteria, tendering methods and variation orders on project performance. Purpose of the study is to evaluate the effects of procurement related factors on project performance. Snowballing sampling technique was used in selecting forty (40) construction organizations in Lagos metropolitan city that participated in the study and thirty-one (31) responses were secured from Architects, Builders, Engineers and Quantity Surveyors. Results of the study indicate that procurement selection criteria of cost, time, quality, project characteristics and external environmental factors have effects on project performance. Competitive, open and selective tendering methods have high impacts on project performance. No significant difference was found between the impacts of tendering methods on project performance. Variation orders impact project performance with time, cost overruns and disputes and it have effects on project performance. Conclusions are that procurement selection criteria, tendering methods and variation orders have impacts on project performance. Cost, time, quality related factors, tendering methods and variation orders strongly affect project performance. Recommendations to clients, stakeholders, practitioners and consultants are on the onset to consider tendering methods, use selective, open and competitive tendering approaches and discourage excessive variation orders during construction. Policy makers in government, clients, and private developers into housing projects should give adequate attention for selecting appropriate procurement and tendering methods for better management of future projects in Nigeria and other developing countries.
Various lateral load-resisting structural systems for high-rise buildings are rigid frame, shear wall, wall-frame, braced tube system, outrigger system and tubular system. Recently diagrid structural system is adopted in tall buildings due to its structural efficiency and flexibility in architectural planning. In this paper analysis and design of a 36 story diagrid steel building is presented. A regular floor plan of 36 m × 36 m size is considered. ETABS software is used for modeling and analysis of structural members. Dynamic along wind and across wind are considered for design of the structure. Load distribution in diagrid system is also studied for 36-story building. All structural members are designed as per IS 800:2007 considering all load combinations. Optimum angle for diagonal column on periphery is derived based on stiffness approach. Similarly, analysis and design of 50-, 60-, 70-and 80-story diagrid structures is carried out considering optimum angle of diagrid columns. Comparison of analysis results in terms of time period, top story displacement and inter-story drift is presented. The sizes of diagonal columns and internal column for all buildings are also presented in this paper.
The lack of structured procedures, based on good information, for the selection of construction procurement system sometimes inhibits the opportunity for clients to choose a procurement option in a fully informed manner. The selection and use of an unsuitable procurement approach could eventually lead to project failure. To formalise the procurement selection procedures, clients should establish a set of appropriate procurement selection parameters (PSPs) based on their distinctive characteristics and objectives, project requirements, and external environment. In this paper, a list of 34 PSPs was drawn up according to the findings of researchers in procurement selection. An empirical study was carried out in Australia with clients and project managers to unveil the importance and interrelationships of the identified PSPs. The results indicate that the perception of clients and project managers on the importance of PSPs was generally consistent, that underlying relationships do exist among parameters, and there is a need for clients to ensure that the interrelated PSPs are not overlooked when assessing the suitability of construction procurement systems.
Need for good governance in proposed presidential procurement committee
- P Ekanayaka
Ekanayaka, P. (2015), "Need for good governance in proposed presidential procurement committee",
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20 August 2020).
Procuring steel through an early-release steel package
- C B Farrow
Farrow, C.B. (2007), "Procuring steel through an early-release steel package", International Journal of
Construction Education and Research, available at: http://ascpro0.ascweb.org/archives/cd/2007/
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Design and research on composite steel and concrete frame core wall structure
- H Guangyu
- C Binlei
- M Qisong
- L Xiangyang
- H Jia
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composite steel and concrete frame core wall structure", The 14th World Conference on
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Analysis of construction waste generation and its effect in a construction site
- R K D G Kaluarachchi
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construction site", International Journal of Civil, Environmental, Structural, Construction and
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Factors influencing labor productivity on construction sites: a state-of-the-art literature review and a survey
Naoum, S.G. (2016), "Factors influencing labor productivity on construction sites: a state-of-the-art
literature review and a survey", International Journal of Productivity and Performance
Management, Vol. 65 No. 3, pp. 401-421, Emerald Group Publishing.
Project management consultancy (PMC) procurement approach: supplier's evaluation and selection dilemma
- M N M Nawi
- M A Azimi
- M A A Pozin
- W N Osman
- H S Anur
Nawi, M.N.M., Azimi, M.A., Pozin, M.A.A., Osman, W.N. and Anur, H.S. (2016), "Project management
consultancy (PMC) procurement approach: supplier's evaluation and selection dilemma",
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Critical selection criteria for appropriate procurement strategy for project delivery in Nigeria
- A E Ojo
- M A Gbadebo
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for project delivery in Nigeria", Journal of Emerging Trends in Economics and Management
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Critical Success Factors Affecting E-Procurement Adoption in Public Sector Organizations in Sri Lanka
- K M Premathilaka
- R I S Fernando
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Adoption in Public Sector Organizations in Sri Lanka, Unpublished Thesis, Digital Repository,
University of Sri Jayawardhanapura, pp. 334-360.
Nonlinear analysis of steel-concrete composite structures: state of the art
- E Spacone
- S E Tawil
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About the authors G.P.P.S. Perera currently works as a Project Quantity Surveyor of Vonlan Construction (Pvt.) Ltd. and holds a B.Sc. (Hons.) in Quantity Surveying from University of Moratuwa and assimilating the technical knowledge of the industry to the academia through researches
- D G Valence
- D Zelechowska
- N Zyluk
- M Urba Nski
Valence, D.G. (2010), "Innovaton, procurement and construction industry development", Australasian
Journal of Construction Economics and Building, Vol. 10 No. 4, pp. 50-59.
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Zelechowska, D., _
Zyluk, N. and Urba nski, M. (2020), "Find out a new method to study abductive reasoning
in empirical research", International Journal of Qualitative Methods, Vol. 19, pp. 1-11.
About the authors
G.P.P.S. Perera currently works as a Project Quantity Surveyor of Vonlan Construction (Pvt.) Ltd. and
holds a B.Sc. (Hons.) in Quantity Surveying from University of Moratuwa and assimilating the technical
knowledge of the industry to the academia through researches. He is specifically interested in
Construction Procurement and Construction Technology.