Building and Construction Authority Academy
Singapore, Singapore

The Building and Construction Authority is a statutory board under the Ministry of National Development of the Singapore Government. It was established on 1 April 1999 through the merger of the Construction Industry Development Board and the Building Control Division of the former Public Works Department.The primary role of BCA is to develop and regulate Singapore's building and construction industry. BCA champions the development of an excellent built environment for Singapore. Its mission is to shape a safe, high quality, sustainable and friendly built environment. Wikipedia.

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Kimura K.,Kiso Jiban Consultants Co. | Yasuda T.,Kiso Jiban Consultants Co. | Chiam S.L.,Building and Construction Authority Academy | Goay K.H.,Building and Construction Authority Academy
Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016 | Year: 2016

The paper presents results of a series of hydraulic fracturing tests conducted in the Bukit Timah Granite, which belongs to the Triassic granite similarly found in the eastern Malaysian Peninsula and the Jurong Formation of Singapore comprising of the Triassic to Jurassic sedimentary rocks. The tests were carried out in vertical boreholes ranging in depth from 90 to 170 m. mostly in Classes I and II of Rock Mass Rating (RMR). Singapore is situated approximately 750 km northeast of the subduction zone between the Eurasian plate and the Indo-Australian plate. The general tectonic stress acts in NNE-SSW to NE-SW in the region. The results are interpreted and assessed in terms of the regional tectonics. The magnitude, horizontal-vertical ratio and orientation of in situ rock stress results are also discussed. The ratios of maximum horizontal stress to vertical stress are approximately 3 and 2, in the Bukit Timah Granite and the Jurong Formation, respectively. The relationship of maximum (SH) and minimum (Sh) horizontal stresses, and vertical stress (Sv) is SH>Sh>Sv, and indicates a thrust faulting stress regime that is characteristics of a compressional tectonic environment. The stress regime agrees with the regional geological setting and interpretation of seismic reflection surveys conducted in this study area. The orientations of maximum horizontal stresses generally show N-S to NE-SW and are consistent with the general compressive stress in the region. © 2016 Australian Geomechanics Society.

Wong N.H.,National University of Singapore | Kwang Tan A.Y.,National University of Singapore | Chen Y.,National University of Singapore | Sekar K.,National University of Singapore | And 4 more authors.
Building and Environment | Year: 2010

This research involves the study of 8 different vertical greenery systems (VGSs) installed in HortPark to evaluate the thermal impacts on the performance of buildings and their immediate environment based on the surface and ambient temperatures. VGSs 3 and 4 have the best cooling efficiency according to the maximum temperature reduction of the wall and substrate surfaces. These results point to the potential thermal benefits of vertical greenery systems in reducing the surface temperature of buildings facades in the tropical climate, leading to a reduction in the cooling load and energy cost. In terms of the lowest diurnal range of average wall surface temperature fluctuation, VGSs 4 and 1 show the highest capacities. No vertical greenery system performs well in term of the diurnal range of average substrate temperature fluctuation. By limiting the diurnal fluctuation of wall surface temperatures, the lifespan of building facades is prolonged, slowing down wear and tear as well as savings in maintenance cost and the replacement of façade parts. The effects of vertical greenery systems on ambient temperature are found to depend on specific vertical greenery systems. VGS 2 has hardly any effect on the ambient temperature while the effects of VGS 4 are felt as far as 0.60 m away. Given the preponderance of wall facades in the built environment, the use of vertical greenery systems to cool the ambient temperature in building canyons is promising. Furthermore, air intakes of air-conditioning at a cooler ambient temperature translate into saving in energy cooling load. © 2009 Elsevier Ltd. All rights reserved.

Wong N.H.,National University of Singapore | Kwang Tan A.Y.,National University of Singapore | Tan P.Y.,National Parks Board | Chiang K.,National Parks Board | Wong N.C.,Building and Construction Authority Academy
Building and Environment | Year: 2010

After decades of fast growth, the scarcity of land in cities causes many buildings to be constructed very close to expressways, exposing occupants to serious noise pollution. In recent years, sustainable cities have found that greenery is a key element in addressing this noise pollution, giving rise to the popularity of vertical greenery systems (VGS). This research has two objectives. The first involves the study of eight different vertical greenery systems installed in HortPark, Singapore to evaluate their acoustics impacts on the insertion loss of building walls. Experiment shows a stronger attenuation at low to middle frequencies due to the absorbing effect of substrate while a smaller attenuation is observed at high frequencies due to scattering from greenery. Generally, VGS 2, 7 and 8 exhibit relatively better insertion loss. The second objective aims to determine the sound absorption coefficient of the vertical greenery system constructed in the reverberation chamber which is found to have one of the highest values compared with other building materials and furnishings. Furthermore, as frequencies increases, the sound absorption coefficient increases. In addition, it is observed that the sound absorption coefficient increases with greater greenery coverage. © 2009 Elsevier Ltd. All rights reserved.

Wong N.H.,National University of Singapore | Tan A.Y.K.,National University of Singapore | Tan P.Y.,Center for Urban Greenery and Ecology Research | Sia A.,Center for Urban Greenery and Ecology Research | Wong N.C.,Building and Construction Authority Academy
Journal of Urban Planning and Development | Year: 2010

The objective is to discover the current perception of vertical greenery systems and barriers to their widespread adoption in Singapore. It can be concluded that the energy saving property of vertical greenery systems make them suitable for the local conditions as Singapore depends heavily on air conditioning. In addition, vertical greenery systems will also enhance the aesthetic of a building. Moreover, the installation of vertical greenery system is part of the effort to reduce the increasing serious air and noise pollution. Lastly, vertical greenery system is able to bring nature closer to humans. As with all greenery, constant clearing of the residue of dead leaves as well as periodical replacement and trimming cannot be avoided. These may become a barrier in convincing building owners to adopt vertical greenery systems. Furthermore, there is a lack of technical information, maintenance instructions, and information on plants suitable for vertical greenery systems locally. Lastly, there is lack of awareness of the benefits and performance of vertical greenery systems as well as a lack of grants and subsidies for implementation of vertical greenery systems. © 2010 ASCE.

Ho N.Y.,Samwoh Corporation Pte. Ltd. | Lee Y.P.K.,Samwoh Corporation Pte. Ltd. | Lim W.F.,Samwoh Corporation Pte. Ltd. | Zayed T.,Nanyang Technological University | And 3 more authors.
Journal of Materials in Civil Engineering | Year: 2013

In Singapore, the applications of recycled concrete aggregate (RCA) are limited to nonstructural concrete, road construction, and backfilling. To realize the beneficial use of RCA, an in-depth study was conducted to evaluate its use in structural concrete. This paper reports the test results of a study that is part of extensive research intended to evaluate the properties of RCA concrete produced by a proposed rational approach in concrete mix design. The key parameters studied include compressive strength, elastic modulus,and drying shrinkage. The results showed that the RCA concrete can be designed to achievecomparable compressive strength and elastic modulus, relative to the corresponding properties of concrete containing natural coarse aggregate (NCA). RCA concrete tends to exhibithigher drying shrinkage strains relative to NCA concrete, but the values are within the recommended limits. © 2012 American Society of Civil Engineers.

Cheng T.F.,Building and Construction Authority Academy | Soon L.K.,Building and Construction Authority Academy
Open Systems - Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia, CAADRIA 2013 | Year: 2013

Building Information Modelling (BIM) has been identified as one of the key technology drivers under the Singapore Construction Productivity & Capability Roadmap to spur the construction industry towards higher productivity and capability. The Singapore Building and Construction Authority (BCA) has formulated a comprehensive BIM Roadmap to steer the industry-wide adoption by 2015, through initiatives such as incentivising early adopters, public sector taking the lead, building BIM capability & capacity, facilitating the transition from 2D CAD to BIM, and regulatory approval.

Li B.,Nanyang Technological University | Leong C.L.,Building and Construction Authority Academy
Journal of Structural Engineering (United States) | Year: 2015

This paper presents the experimental findings of high-strength concrete (HSC) interior beam-column joints under column axial compressive loading. Eight full-scale interior beam-column joints with varying degrees of reinforcement detailing were subjected to a constant column axial compressive load and quasi-static horizontal cyclic load. The test revealed that HSC improved the bond condition of bars with a larger diameter due to the higher achievable bond stress, thereby allowing for the use of longitudinal beams of a larger diameter. Parametric studies via finite-element (FE) modeling were performed to study the influence of various parameters on the strength and bond of HSC beam-column joints. The study confirmed that reinforcement of larger diameter can be used in HSC beams with the improvement in the bond condition. The presence of axial compressive load improved the bond stress of HSC beam-column joint but a threshold limit should be applied. Last, two standards were reviewed and improvements to the design equations were proposed. © 2014 American Society of Civil Engineers.

Leong T.K.,Building and Construction Authority Academy | Huat C.S.,University of Nottingham Malaysia Campus
Procedia Engineering | Year: 2013

This abstract forms Part 1 of 4 of full report on research work: "Bearing and settlement behaviour of piled-raft in soft clay." The convention approach on piled-raft design tends to ignore load bearing and settlement contribution from the raft slab. Thus, selecting an effective raft size taking into effect of the soil-structure interaction environment is often neglected and this resulted with conservative design, expensive piled-raft foundation structure, depleting of resources and ineffective construction - in all, expensive and non-sustainable work This report evaluates on the conventional design approach, problems and limitations faced and propose possible alternative design approach to derive an optimum raft size which are both effective and practical based on the load bearing and settlement criteria. The model would then be used on piled-raft foundation in the next phase of research work to study any significance contribution from the raft and it level of contribution through similar parametrics. Analyses work and charts done would be used to support the selection of the most efficiency raft size model through the use of FEM geotechnical software in both short and long terms design consideration with structure founded on homogeneous normal consolidated soft clay overlaying a thickness of firm clay soil strata. As such, all presentations in this paper would only be encompassing solely on unpiled-raft foundation design under undrained condition since clay soil is expected to consolidate with times and gets firmer and stronger in long term. A sustainable design chart together with self-explained flowchart to serve as quick-reference design guide is developed for completeness. © 2013 The Authors.

Wittkopf S.,Solar Energy Research Institute of Singapore | Valliappan S.,Solar Energy Research Institute of Singapore | Liu L.,Solar Energy Research Institute of Singapore | Ang K.S.,Building and Construction Authority Academy | Cheng S.C.J.,Building and Construction Authority Academy
Renewable Energy | Year: 2012

The first zero-energy office building in Singapore uses building integrated photovoltaics to meet its energy target. The main electricity generator is the 142.5kW p grid-connected BIPV system on the roof of the building. This paper presents the first performance assessment of the BIPV system over 18 months of operation following the guidelines of the IEC standard 61724 for measurement, data exchange and analysis. The performance analysis shows a good overall performance ratio of 0.81. The average array yield is 3.86h/d and - after subtracting the capture and system losses of 0.58h/d and 0.16h/d, respectively - the resulting final yield is 3.12h/d averaged over all arrays. The system and array efficiencies are 11.2% and 11.8%, respectively, compared to the nameplate PV module efficiency of 13.7%. The overall inverter efficiency is 94.8%. All the results are based on irradiance measurements with calibrated pyranometers. In addition, a classification of daily irradiance is presented, dividing the days into overcast, intermediate and clear days with each high, medium and low temporal change of irradiance levels. Results show that the performance ratio is lowest for clear days with high irradiance fluctuations, due to higher capture and system losses. Despite relatively higher losses, the absolute final yields are higher for clear days. Detailed analyses with respect to the impact of shading, orientation/tilt, and PV module temperature are also presented for selected arrays. © 2012 Elsevier Ltd.

Chew K.C.,Building and Construction Authority Academy
IES Journal Part A: Civil and Structural Engineering | Year: 2010

Sustainable construction is critical to Singapore's national development as Singapore has little natural resources. Nearly, all construction materials have to be imported and it is therefore vital to improve Singapore's efficiency on the use of natural resources. Since 2007, the Building and Construction Authority (BCA), together with Singapore's construction industry, strives to promote the adoption of sustainable construction materials and practices. Central to the drive of sustainable construction is the Sustainable Construction Masterplan, with five major strategic thrusts outlining strategies to achieve resource efficiency. The five strategic thrusts cover initiatives from government support, legislation to research and development support. This article also presents some recent initiatives of sustainable construction, such as the development of demolition protocol and sustainable construction capability development fund. The findings of a recently completed full-scale study on the use of recycled concrete aggregates in structural elements of a 3-storey office building are also presented. © 2010 Building & Construction Authority.

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