Construction + Engineering Conference Papers

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    The embodied carbon of building services systems in houses
    (2023-08-29) Birchmore, Roger; Dowdell, D.; Wood, L.; Unitec, Te Pūkenga; Building Research Association of New Zealand (BRANZ); RESILIENZ (Nelson, N.Z.)
    This presentation outlines the challenges of documenting the embodied carbon of residential building services systems, the strengths, weaknesses, and pitfalls. It finds that a possible illusion of precision is underpinned by some very pragmatic decisions in calculating fundamental data and identifies major and minor carbon contributors. It also proposes reporting protocols that will make the information useful to designers who will ultimately be the most influential users of the information. Background Current embodied carbon tools Current progress This work Clearcut® Results - BRANZ Unitec comparisons Lessons learned EPDS For the future
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    Diagnostic procedures for low-level asbestos contamination in occupied tertiary institutional buildings
    (2023-07) Berry, Terri-Ann; Steinhorn, Gregor; Low, Joanne; Wallis, Shannon; Blanchon, Dan; Unitec, Te Pūkenga; Te Pūkenga; Environmental Solutions Research Centre (Unitec, Te Pūkenga)
    Asbestos related disease: a global picture Changing risk New Zealand timeline New Zealand's asbestos story New Zealand facts New Zealand case history Unitec - Auckland, New Zealand Asbestos in buildings Asbestos discovery, 2021 Methods Problems with surface sampling Results Asbestos source? Action taken Recommended proecdure Conclusions References
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    BIM use in green building certification processes
    (ISEC Press, 2023-08) Ly, Lesley; Kiroff, Lydia; Unitec,Te Pūkenga; Te Pūkenga; Karatas, A.; Iranmanesh, A.; Gurgun, A.P.; Yazdani, S.; Singh, A.
    Green building certification schemes have been developed to incentivize sustainable construction leading to the development of green BIM technology, which uses multi disciplinary data to support sustainable construction. However, due to a lack of understanding, interoperability, and technical issues, BIM is not widely used to support green building certification. This study investigates the current use of BIM for certification purposes, the building characteristics or information that need to be modeled, and the skills or knowledge required to use BIM for green building certification. The research, which employed a case study approach, examined the BIM use in a recently built 6 Green Star rated Head Office of a major supermarket chain in south Auckland. The main data collection methods were document analysis and semi structured interviews with key project stakeholders. The results suggest that despite generally good knowledge of BIM and sustainable building design, the connection between BIM and green building certification is weak or non-existent. Instead, BIM is used mainly for model authoring, coordination, quantity take-off, and basic sustainability analysis. The main factors hindering BIM integration that have been identified are low-quality modeling, lack of multi-disciplinary coordination, and inefficient procurement. It is recommended that BIM usage should be accurately detailed and coordinated for downstream uses to gain the most value. Procurement should also accommodate appropriate BIM procedures to encourage multi-disciplinary coordination. Furthermore, new technology and research development are also needed to increase interoperability with sustainable (green) software.
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    Field study of indoor thermal environment of school buildings with different building envelopes, structures, floors and partitions
    (Unitec, Te Pūkenga, 2023-04-20) Su, Bin; McPherson, Peter; Jadresin-Milic, Renata; Shamout, Sameh; Wang, Xinxin; Patel, Yusef; Unitec,Te Pūkenga; Te Pūkenga
    A conventional Auckland school has a number of low-rise, isolated buildings with light weight structures and building envelopes (see Figure 1). In 90% of Auckland schools, each isolated building only has one to four classrooms. In 50% of Auckland schools, each isolate building has only one to two classrooms (see Figure 2). The redevelopment of Avondale College, in West Auckland, from 2010 to 2014, represented one of the biggest school rebuilding programs in New Zealand’s history. This was the first time that insulated precast concrete panels had been used as the main structure and building envelope for a new school building in New Zealand, which provided an opportunity for us to do this comparison study of school buildings with or without thermal mass.
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    Skill matrix for prefabricated construction: A case of NZ modular company
    (2022-11-30) Masood, R.; Aliakbarlou, S.; Unitec, Te Pūkenga; Te Pūkenga
    Skill shortage is a critical issue in the uptake of prefabricated construction around the world, and New Zealand is no exception. Prefabricated construction is an emerging industry, that amalgamates manufacturing and construction practices. Further, the workforce for prefabricated construction has diverse backgrounds considering traditional construction, manufacturing or any other industry. This establishes the in consistency of skill sets for profiles based on different qualifications and experience. This study aims to develop a comprehensive skill matrix as per profiles in prefabricated construction companies. A case study approach was adopted to understand the essential skills of various profiles within the organizational structure. Skill profile studies were involved in the design, manufacturing and construction processes. Data was collected from interviews with key employees for job descriptions affiliated with the selected case company. The data was triangulated with archives, reports, and market recruitment sources. Key participants were involved in profiles from managerial (3) to supervision (4) to front-line workers (4), also supporting staff (4). A skill matrix was developed showing skills and profiles, and skills classified based on core and overlapping, soft and hard, also technical and managerial. This study sets a foundation for further research on companies using low to high-prefabricated construction technologies. A robust skill matrix will help both new and old companies to understand human resource requirements.