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You searched for +publisher:"Stellenbosch University" +contributor:("De Villiers, Wibke I."). Showing records 1 – 2 of 2 total matches.

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Stellenbosch University

1. Le Roux, Franel. Structural, economic and environmental feasibility of plastic load-bearing walling and roofing system for low-income housing.

Degree: MEng, 2014, Stellenbosch University

ENGLISH ABSTRACT: The lack of adequate housing becomes an increasing concern as the human population increases, which is not only restricted to Africa, but worldwide. With the world becoming more environmentally aware, the aim towards more sustainable development has become more essential. This results in alternative building technologies (ABT’s) being investigated to address the backlog in housing. This study investigates plastic materials as structural elements in low-income housing to address the housing backlog in a structurally stable, cost efficient and environmentally sustainable manner. The viable plastic materials that were identified are FFC (foam-fibre composite) and WPC (wood-plastic composite) as structural elements and EPS (expanded polystyrene) as a core infill panel. Material parameters were obtained experimentally which were used in a numerical analysis to validate the structural stability of a modular WPC housing unit. The experimental work includes a direct compression, direct tension, compressive creep and a four-point bending test for the WPC. With the sandwich panels a push-though shear and four-point bending test were done. The compressive strength of the EPS as well as a relative bond strength of the selected adhesives was also tested. Furthermore, a comparative study was conducted on the fire performance (fire rating), cost efficiency as well as the environmental sustainability of three housing units constructed of FFC, WPC and block and mortar, respectively. In terms of structural stability, a modular plastic housing unit was devised and validated by both experimental work and plastic material investigations which showed that WPC can be used for load-bearing walling (with EPS as core infill panel), roofing and flooring systems. From the comparative study, it was found that the fire rating of the block and mortar housing unit met the requirements of 20 and 30 minutes for the internal and external walls, respectively, prescribed by SANS 10400-T (2011). The fire rating of the block and mortar housing unit was met in terms of integrity, insulation and stability. The two modular plastic housing units, however, only met the fire rating in terms of integrity and insulation, but failed to meet the requirements in terms of stability. The approach used to determine the fire behaviour of a housing unit is not as accurate as the physical fire test, since assumptions are made in terms of the fire properties. However, the approach gives an indication of the fire performance of a housing unit. FFC and WPC are laminated with PVC (polyvinyl chloride) which emits hydrochloride acid (HCl), when burning. Hydrochloride acid is a toxic gas. Thus, according to one of the minimum norms, stipulated by the NHBRC Home Building Manual and Agrément, an adequate housing unit should not emit harmful gasses. Although these regulations are not mandatory, in terms of this, WPC and FFC are not viable building materials for an adequate housing unit, especially when human behaviour and smoke… Advisors/Committee Members: De Villiers, Wibke I., Stellenbosch University. Faculty of Engineering. Department of Civil Engineering..

Subjects/Keywords: Plastics in building; Low-income housing; Sustainable building; Modular construction; UCTD

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Le Roux, F. (2014). Structural, economic and environmental feasibility of plastic load-bearing walling and roofing system for low-income housing. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/95939

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Le Roux, Franel. “Structural, economic and environmental feasibility of plastic load-bearing walling and roofing system for low-income housing.” 2014. Thesis, Stellenbosch University. Accessed October 21, 2019. http://hdl.handle.net/10019.1/95939.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Le Roux, Franel. “Structural, economic and environmental feasibility of plastic load-bearing walling and roofing system for low-income housing.” 2014. Web. 21 Oct 2019.

Vancouver:

Le Roux F. Structural, economic and environmental feasibility of plastic load-bearing walling and roofing system for low-income housing. [Internet] [Thesis]. Stellenbosch University; 2014. [cited 2019 Oct 21]. Available from: http://hdl.handle.net/10019.1/95939.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Le Roux F. Structural, economic and environmental feasibility of plastic load-bearing walling and roofing system for low-income housing. [Thesis]. Stellenbosch University; 2014. Available from: http://hdl.handle.net/10019.1/95939

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Stellenbosch University

2. Van Noordwyk, Arina. Quantifying the sustainability of the built environment : the development of a complete environmental life cycle assessment tool.

Degree: MEng, Civil Engineering, 2015, Stellenbosch University

ENGLISH ABSTRACT: Sustainability is becoming an increasingly important aspect in all facets of engineering. It is in particular an important consideration in the structural engineering industry, due to the prominence of the negative impact this industry has on the environment, both on a national and international scale. The problem, however, is that sustainability is a mostly unknown and highly debated topic. It is not only difficult to quantify, but even difficult just to define. In the field of structural engineering it is an especially difficult task to consider sustainability. It is still a very new field of research and difficult to apply. It is therefore important that continued research be done in order for there to be a better understanding of how sustainability should be considered and applied in the context of structures. In an attempt to assess the environmental impact of building structures, there are two basic approaches that are followed. The first, the application-oriented method, is a simple, points-based system. The second, the analysis-oriented method, makes use of detailed indices and factors to quantify the impact. This study aims to develop an analysis-oriented method, specifically designed for the complete life cycle of buildings in the South African environment. This is accomplished by continuing the work that was started by Brewis (2011), and continued by Brits (2012). Brewis developed the approach for the pre-use phase, while Brits developed the approach for the end-of-life phase. Both focussed their application on low-cost housing development. However, the approach is defined for the use of the analysis of a building envelope. The details of developing the environmental life cycle assessment (LCA), as well as the approaches for the pre-use phase and the end-of life phase are discussed in Chapter 3. The study develops the use phase of the proposed environmental life cycle assessment for buildings in Chapter 4. It discusses in detail the two main components of the use phase, namely maintenance and operation. While maintenance is concerned with the replacement of building materials in the structure, the operation component is concerned with the energy needs during the use phase. It is determined that the energy use that is directly related to the building envelope is the energy required for the space heating and cooling of the building. This is due to the fact that the thermal properties of the building envelope influence the thermal environment within the building, and thereby impact the use of energy to regulate that thermal environment. In order to make the most use of both of these components within the application of the proposed LCA, it was decided to model a residential building structure that uses consistent energy to regulate the thermal environment within the structure. However, it is not only the objective to use the proposed LCA as an assessment tool, but also as a comparative and optimisation tool. Therefore one component, the external walls, was… Advisors/Committee Members: De Villiers, Wibke I., Stellenbosch University. Faculty of Engineering. Dept. of Civil Engineering..

Subjects/Keywords: Structural engineering industry  – Sustainability; Building structures  – Environmental life cycle assessment; Building structures  – Analysis-oriented method; UCTD

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Van Noordwyk, A. (2015). Quantifying the sustainability of the built environment : the development of a complete environmental life cycle assessment tool. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/96923

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Van Noordwyk, Arina. “Quantifying the sustainability of the built environment : the development of a complete environmental life cycle assessment tool.” 2015. Thesis, Stellenbosch University. Accessed October 21, 2019. http://hdl.handle.net/10019.1/96923.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Van Noordwyk, Arina. “Quantifying the sustainability of the built environment : the development of a complete environmental life cycle assessment tool.” 2015. Web. 21 Oct 2019.

Vancouver:

Van Noordwyk A. Quantifying the sustainability of the built environment : the development of a complete environmental life cycle assessment tool. [Internet] [Thesis]. Stellenbosch University; 2015. [cited 2019 Oct 21]. Available from: http://hdl.handle.net/10019.1/96923.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Van Noordwyk A. Quantifying the sustainability of the built environment : the development of a complete environmental life cycle assessment tool. [Thesis]. Stellenbosch University; 2015. Available from: http://hdl.handle.net/10019.1/96923

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.