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Publications (25)
According to the current regulation, acoustic comfort in educational buildings in Lithuania is ensured by applying sound insulation of structures and limiting excessive room reverberation. The maximum reverberation time values described in the document depend on the building's acoustic comfort class, room volume and frequency range. In order to det...
There is a growing body of research reporting that unwanted indoor noise can negatively affect the well-being of the occupants. According to the World Health Organisation (WHO), indoor guideline values in dwellings are 30 dBA (LAeq,night,indoor), which in turn should also include appropriate airborne and impact sound insulation of façades. Such low...
Indoor acoustic comfort under existing outdoor noise generally depends on the sound insulation characteristics of the building façade. The importance of the acoustic classification of dwelling façade among the classification of other building elements was presented in a COST Action report and by developing the ISO/AWI TS 19488 project. Two approach...
Cavity walls could be used instead of homogeneous walls in order to reduce the load acting on the ceiling structure while ensuring conformity with the acoustic requirements for buildings. The airborne sound insulation properties of nonbearing cavity walls comprising two masonry leaves with a filled gap are dealt in this paper. Cavity wall structure...
The World Health Organization the noise from road traffic composes as a main contribution in the total environment noise. In suburbia areas near the highways road traffic produce especial high noise levels. The acoustic barriers along the roads are designed to reduce this noise impact in protected against noise areas. The effectiveness of such barr...
The noise produced by road transport by the World Health Organization contributes basically to the environment noise pollution. The environmental noise impact by the DIRECTIVE 2002/49/EC is described using the one year average noise descriptors Lden, Lnight which usually is presented via the appropriate noise maps. However, there are cases when tog...
Nowadays traffic noise and air pollution are as important as durability parameters, what leads to the need of more comprehensive approach when planning, designing, constructing and maintaining road pavements. Having in mind country differences in traffic volumes, climate conditions and financial capabilities it is not easy to transfer various solut...
Advantages of application the sound classification schemes were foreseen in the two applications. In the legal regulation, the scheme expresses in the users friendly and easy understandable form protection against noise requirements for the buildings. The scheme is also a tool for designer to advice criteria of the suitable acoustic comfort in prem...
In Lithuania’s case, the legal requirements for the building acoustic quality since the year 2004 has been expressed through the sound classification scheme (SCS). The relationship of the subjective indoor acoustic comfort with the value of objective sound insulation was considered as a core for the classification scheme. SCS was designed to provid...
By the World Health Organization (WHO) data reported in Burden of disease from environmental noise “one in three individuals is annoyed during the daytime and one in five has disturbed sleep at night because of traffic noise”. By these data the odds of incidence of disease rise to about 10% when LAeq, day noise level increase from 55–60dB to 65–70d...
The noise metric recognized as universal to describe aircraft flight noise events and community noise pollution as a whole has not been yielded yet. Among a set of factors that impacts aircraft noise perception is a number of flights - number of aircraft noise events. This article deals with the number of flights' influence on applicability of the...
The paper gives a detailed overview and analysis of road transport noise propagation, noise composition and impacts on the living conditions. Road transport noise has been rapidly growing and the traditional noise abatement solutions, such as noise barriers, are not always suitable and cost-effective for particular road infrastructure. One of the m...
Research has shown that for residential area nearby (up to 50 m) exurbia roads, there are cases where the evaluation of noise impact needs more than using the calculation methods alone. Thus, in order to confirm (or not) the implementation of designed measures for noise abatement procedures in these areas, some direct acoustical measurements of tra...
Sound classification scheme opens new enhanced possibilities to ensure noise protection in buildings and included in Lithuanian legislation in force since 2004 as a Building Regulation STR 2:01:07. The classification scheme comprises five acoustic comfort classes. For each sound class are defined airborne and impact sound insulation, reverberation...
Siekiant sukaupti žinių, kaip užtikrinti naujų gyvenamųjų namų atitiktį privalomosios C garso klasės bei padidinto akustinio komforto A ir B garso klasių reikalavimams pagal STR 2.01.07:2003 reglamentą, teoriniais skaičiavimais bei eksperimentiniais tyrimais nustatytas butus skiriančių sienų ore sklindančio garso izoliavimo pagerėjimas įrengiant pa...
Santrauka Vienas is svarbesnių statybinių medžiagų ir statinių elementų parametrų yra oro garso izoliavimas. Statybinių elementų garso izoliavimo koeficiento matavimą reglamentuoja įvairių salių standartai. Juose nurodyti griežti reikalavimai bandymo kameros tinkamumui bei matavimų tikslumui nustatyti. Įvairiuose standartuose sie reikalavimai yra s...
When the annual L DEN calculated through road traffic parameters exceeds the limit value within the bounds of permissible error, in situ noise measurements should be performed for final assessment. Short-term measurements performed during a few hours cannot validate these calculations. Yearly changes in traffic parameters, such as vehicle categorie...
Environmental noise management directive 2002/49/EC bring obligation to express noise limit values at least in terms of two different indicators: L DEN and L night. Additionally member states may use supplementary noise indicators. Between existing noise indicators in national legislation L Amax is widely applicable. Looking to develop single-numbe...
The necessity to check requirements for sound insulation of new building façades against outdoor noise and for estimating noise pollution of the residential area comprise the assessment of environmental noise taking in situ measurements that are mainly carried out under the standardized method presented in the EU directives and Lithuanian legislati...
New developments for aircraft noise zoning around the airports currently are under design in new states, including new EU member states. In these countries previous experience still exist and valid, particularly for sanitary-hygienic norms of the aircraft noise. But at the same moment the ICAO recommendations are used for these purposes also, so as...
This work analyses acoustic qualities of autoclaved aerated concrete (AAC). Three the most widely used types of AAC are chosen for the analysis: gas cement concrete, gas cement concrete with combined binder (Portland cement and lime), and foam cement concrete. The procedure and technique of the materials’ formation is presented in this work. The ev...
Vienas iš svarbesnių statybinių medžiagų ir statinių elementų parametrų yra oro garso izoliavimas. Statybinių elementų garso izoliavimo koeficiento matavimą reglamentuoja įvairių šalių standartai. Juose nurodyti griežti reikalavimai bandymo kameros tinkamumui bei matavimų tikslumui nustatyti. Įvairiuose standartuose šie reikalavimai yra skirtingi (...
