Mitchell Humphreys

Mitchell Humphreys
James Cook University · College of Science and Engineering

7.6
 · 
Bachelor of Engineering (Civil) Hon

About

9
Publications
2,589
Reads
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21
Citations
Introduction
I am currently completing a PhD in Wind and Structural Engineering, focused on internal pressures in buildings during windstorms for structural design application. My research focuses on the characteristics of wind induced internal pressures inside industrial type buildings, which have a single dominant opening; as these pressures contribute to a significant portion of the total wind loads on structures. Understanding these pressures leads to the optimal design of structures.

Publications

Publications (9)
Article
Roof to wall connections (RWCs) play a major role in wind load sharing and load transfer of timber-framed houses. The lack of coherence in the load sharing and load transfer can cause premature failure of timber-framed houses. Thus, it is essential to provide RWCs with adequate strength and stiffness, to ensure the dynamic roof wind loads are adequ...
Article
Full-text available
Windstorm damage surveys highlight that the discontinuity in load resistance and transfer of connections in timber-framed housing can lead to total failure of the roof structure. Field surveys of timber-framed houses under construction in Australia also indicated that, for a typical roof configuration, at least three of its six or more roof trusses...
Article
A single opening on the windward wall which generates large internal pressures in a building often defines the critical wind loading structural design criterion. This paper presents internal pressure fluctuations in a sealed Full-Scale Test Enclosure (FSTE) for a range of single windward wall opening configurations induced by atmospheric wind flow,...
Article
Design pressures given in wind loading standards are based on wind tunnel studies conducted during the 1970s to 90s on rectangular hip and gable roofs. However, most contemporary houses have complex hip-roof geometries with a range of plan footprints. Wind tunnel model studies were carried out on representative one- and two-storey houses to determi...
Article
Full-scale tests were carried out on a part of representative brick veneer contemporary house to assess the loading effects on roof to wall connections and load sharing. Tests were carried out at each stage of construction: bare frame followed by the installation of roof battens and cladding, wall lining, ceiling, etc. These construction stages wer...
Conference Paper
Full-text available
Openings in a building envelope can generate large internal pressure in strong winds, and in combination with large external pressures can result in large net pressures across the envelope. Such a scenario, is a common cause of structural failure during windstorms. Internal pressures have been studied using analytical methods, wind tunnel and limit...
Technical Report
Full-text available
Between 2 and 6 pm the on the 27th of November 2014 severe thunderstorm activity was observed in the South-East Queensland region. Two adjoining storm cells moving in a northerly direction subjected Brisbane and neighbouring suburbs to severe hail, damaging winds and localized flooding. A maximum gust wind speed of 141 km/h was measured at Archerfi...
Article
The structural response of typical, gable-end, low roof pitch industrial buildings, in a windstorm is dependent on the wind loads used in the design of cladding and the portal frame structure. Critical, structural wind load effects derived from wind loads measured on a wind tunnel model show that standards such as AS/NZS 1170.2 can produce unconser...

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Projects

Project (1)
Project
This project will intail full-scale testing of internal pressures in industrial type builings, with the goal being to provide a theroretical basis and experimental validation for the calcuation of the design internal pressures for industrial type buildings.