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Article
Publication date: 17 September 2019

Marina Macedo de Abreu and Alberto Casado Lordsleem Jr

The purpose of this paper is to establish and evaluate the concrete loss and labor productivity (LP) indicators in the concreting step of aluminum formwork system (AFS) in…

Abstract

Purpose

The purpose of this paper is to establish and evaluate the concrete loss and labor productivity (LP) indicators in the concreting step of aluminum formwork system (AFS) in construction in Brazil. The loss and productivity indicators are directed to a regional database (Pernambuco, Brazil).

Design/methodology/approach

Case study was selected as the most appropriate approach. The methodology included data collection in the construction project with 10 residential towers of 320 apartments, in the city of Jaboatão dos Guararapes, Brazil, throughout 82 concrete pouring days using 415 concrete mixer trucks, with a total of 2,582.50 m3 of concrete.

Findings

The findings identified an average concrete loss of 2.6 percent and the LP indicator varying between 0.15 and 0.97 WH/m3. It could be verified that the loss indicators were influenced mainly by the learning effect associated to the qualification of the labor. In addition, the productivity indicators were strongly influenced by delays at the beginning of the concrete pouring and by problems coming from the sequence of concrete supply.

Originality/value

LP indicators are still literature restricted, especially considering only the concreting step. The direct observations of this study allow the identification of factors that inhibit productivity. The comparison of indicators for the concreting service between the ASF and the conventional system attests to the speed, low cost and efficiency of the system studied in this paper.

Details

Built Environment Project and Asset Management, vol. 9 no. 5
Type: Research Article
ISSN: 2044-124X

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Article
Publication date: 2 January 2019

Marimuthu Kannimuthu, Benny Raphael, Ekambaram Palaneeswaran and Ananthanarayanan Kuppuswamy

The purpose of this paper is to develop a framework to optimize time, cost and quality in a multi-mode resource-constrained project scheduling environment.

Abstract

Purpose

The purpose of this paper is to develop a framework to optimize time, cost and quality in a multi-mode resource-constrained project scheduling environment.

Design/methodology/approach

A case study approach identified the activity execution modes in building construction projects in India to support multi-mode resource-constrained project scheduling. The data required to compute time, cost and quality of each activity are compiled from real construction projects. A binary integer-programming model has been developed to perform multi-objective optimization and identify Pareto optimal solutions. The RR-PARETO3 algorithm was used to identify the best compromise trade-off solutions. The effectiveness of the proposed framework is demonstrated through sample case study projects.

Findings

Results show that good compromise solutions are obtained through multi-objective optimization of time, cost and quality.

Research limitations/implications

Case study data sets were collected only from eight building construction projects in India.

Practical implications

It is feasible to adopt multi-objective optimization in practical construction projects using time, cost and quality as the objectives; Pareto surfaces help to quantify relationships among time, cost and quality. It is shown that cost can be reduced by increasing the duration, and quality can be improved only by increasing the cost.

Originality/value

The use of different activity execution modes compiled from multiple projects in optimization is illustrated, and good compromise solutions for the multi-mode resource-constrained project scheduling problems using multi-objective optimization are identified.

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Article
Publication date: 10 October 2008

Jia‐Yuan Wang, Xiang‐Ping Kang and Vivian Wing‐Yan Tam

This paper aims to analyze on‐site production and sources of construction wastes through data obtained from a detailed questionnaire survey and structured interviews…

Abstract

Purpose

This paper aims to analyze on‐site production and sources of construction wastes through data obtained from a detailed questionnaire survey and structured interviews conducted in Shenzhen.

Design/methodology/approach

A questionnaire survey is conducted to investigate the compositions of these construction waste and their sources. One hundred and ten copies are sent to governmental officers, designers, engineers, and contractors, and 84 responses are received, in which the respondent rate is about 76.4 percent.

Findings

According to the survey results, concrete, cement, brick, timber, tile, steel, and aluminum wastes are the main waste sources produced on construction sites. The sources of these wastes are varied. Suggestions to improve the existing waste situation are also discussed.

Originality/value

Various types of construction wastes are generated during construction activities. Expansion of construction wastes not only represents an enormous dissipation of resources but also results in serious environmental pollution, thus creating negative effects to the sustainable development of environmental industry and society. With the developing of economy and industry, waste problems have become more serious in recent years; therefore, waste management is becoming a pressing issue.

Details

Journal of Engineering, Design and Technology, vol. 6 no. 3
Type: Research Article
ISSN: 1726-0531

Keywords

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Article
Publication date: 1 December 2005

Daniel C.W. Ho, S.M. Lo and C.Y. Yiu

This paper provides a comprehensive review of the literature concerning the various causes of failures of external wall tile finishes.

Abstract

Purpose

This paper provides a comprehensive review of the literature concerning the various causes of failures of external wall tile finishes.

Design/methodology/approach

A 4×3 matrix hierarchy framework is developed for a systematic analysis of the literature reviewed.

Findings

The findings from this paper indicate the importance of environmental effects, movement joints, and adhesive on the performance of external wall tile finishes. Thermal and moisture effects induce movement of tiles, and the failure of the tiling system depends very much on the adhesive strength and the provision of movement joints. Workmanship is also a key factor affecting the performance of external wall tile finishes and should not be overlooked.

Research limitations/implications

Various studies have been carried out on the causes of defects in external finishes in the past. However, many of them were case‐oriented and were not supported by laboratory findings. The hierarchical framework developed in this paper serves as a basis for further laboratory and field studies on this issue.

Practical implications

The framework is conducive to the diagnosis of external wall tile delamination.

Originality/value

This paper reviews systematically and comprehensively the literature on the causes of external wall tile delamination.

Details

Structural Survey, vol. 23 no. 5
Type: Research Article
ISSN: 0263-080X

Keywords

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Article
Publication date: 1 November 2005

Joe T.Y. Wong and Eddie C.M. Hui

The objective is to address the major issues and suggest solutions to solve the water seepage and health related problems in residential buildings.

Abstract

Purpose

The objective is to address the major issues and suggest solutions to solve the water seepage and health related problems in residential buildings.

Design/methodology/approach

The methodology relies on a literature review on water damage in residential buildings with references to the vertical spread of SARS in a housing estate in Hong Kong. Working procedures for handling seepage complaints by Hong Kong government departments and their performance are examined.

Findings

The study found that individual departments have difficulties in identifying: the cause and source of seepage, and resolutions to the problem given the limited powers and legal constraints that exist. A holistic approach by individual departments is needed to address the issue. The proposed formation of Owners' Corporations, third party insurance and repair and maintenance sinking fund for old buildings would help solve the building defect and health related problems.

Practical implications

The suggestions in the study would help reduce and partly prevent the environmental nuisance and, more importantly, health risk. Residents are better prepared in the future for a possible return of SARS or other infectious disease.

Originality/value

Research on water damage is very scarce in Hong Kong. And perhaps this is the first of its kind. The study identifies the broader issue of maintaining and managing a high‐rise residential building. The building management and health related problems identified in the study should be noted in any policy addressing housing and health issues.

Details

Facilities, vol. 23 no. 13/14
Type: Research Article
ISSN: 0263-2772

Keywords

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Article
Publication date: 26 September 2019

Khadidja El-Bahdja Djebbar, Souria Salem and Abderrahmane Mokhtari

The purpose of this paper is to analyze energy performance of the multi-storey buildings built in the city of Tlemcen between 1872 and 2016.

Abstract

Purpose

The purpose of this paper is to analyze energy performance of the multi-storey buildings built in the city of Tlemcen between 1872 and 2016.

Design/methodology/approach

A diagnosis based on a bottom-up methodology, using statistical techniques and engineering, has been developed and applied. To do this, demand condition analysis was conducted using a data collection survey on a sample of 100 case studies. Physical characteristics of the buildings have been determined through the archetype by period. This serves to define the strengths and weaknesses of buildings as energy consumers.

Findings

The obtained results showed that dwellings built between 1872 and 1920 offer better energy performance with a consumption index close to 130kWh/m2/year and this compared to the five periods considered. For dwellings built between 1974 and 1989, energy consumption is higher with an index approaching 300kWh/m2/year, thus qualifying the buildings of this period as energy intensive.

Originality/value

A database is established to collect physical information on the existing housing stock and thus allow their classification vis-à-vis of the energy label. This study is part of a research project aimed at evaluating and determining optimal measures for energy rehabilitation of multi-family buildings in Tlemcen. Thermal rehabilitation solutions are proposed using thermal simulations, in the following studies, to improve thermal performance of existing buildings. This study constitutes the first step of a roadmap applicable to other cities constituting climatic zones in Algeria. This helps to enrich the Algerian thermal regulation in thermal rehabilitation of existing residential buildings and conception of new ones, in urban areas with a similar climate.

Details

International Journal of Building Pathology and Adaptation, vol. 38 no. 1
Type: Research Article
ISSN: 2398-4708

Keywords

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Article
Publication date: 13 March 2017

Marcelo Girotto Rebelato, Luciana Maria Saran, Vitor Bernardes Cury and Andréia Marize Rodrigues

The purpose of this paper is to present a case report involving environmental performance analysis of a small Brazilian business from the foundry industry.

Abstract

Purpose

The purpose of this paper is to present a case report involving environmental performance analysis of a small Brazilian business from the foundry industry.

Design/methodology/approach

An environmental performance indicator was developed (Iepa) which is calculated taking into consideration the weighting of potential environmental impacts of each residue/sub product generated, the relative spatial dispersion which each residue/sub product can reach, and the adequacy evaluation of final allocation accomplished by the company for each residue/sub product.

Findings

Despite the evidence that the corporation do not conduct washing of gases emitted from the chimney of the foundry furnace, which consists an environmentally inadequate attitude, the result of Iepa=97.50 percent was obtained. This favorable result is due to the adequate allocation given to residues generated in greater volume in the process, the molding sand. This sand is addressed to an industrial landfill, which is an environmentally adequate practice and approved by competent environmental authorities.

Practical implications

The method used can be applied to measure the environmental impact generated by any business of the foundry sector industry.

Originality/value

The originality of the work is in the developed method, which takes into account: the potential impact of each residue/sub product generated, the amount of each residue/sub product generated in a given time period, the dispersion that each residue/sub product can attain, and the evaluation of eventual allocation of each residue/sub product.

Details

Management of Environmental Quality: An International Journal, vol. 28 no. 2
Type: Research Article
ISSN: 1477-7835

Keywords

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Article
Publication date: 1 January 2021

Jianing Luo, Hong Zhang and William Sher

The purpose of this research is to measure incompatibilities between the manufacturing approaches (MA) used by the manufacturing industries, and those used for the…

Abstract

Purpose

The purpose of this research is to measure incompatibilities between the manufacturing approaches (MA) used by the manufacturing industries, and those used for the off-site construction (OSC) of buildings. The aim is to explore which of these approaches could be integrated into OSC in a precise manner as viewed by architects as well as how this might occur.

Design/methodology/approach

An empirical research and empirical cycle (EC) was adopted as a methodological framework to measure incompatibilities. A combination of quantitative and qualitative mixed methods was explored through a literature-based case study of prefabricated houses and cars, nine real-life projects built by the second author's research team and the first-named author's practical experiences of leading these projects, based on a logic framework derived from the authors’ reflections of their architectural practices.

Findings

The findings quantitatively present the incompatibilities between cars (automobile bodies) and prefabricated houses. Design-related aspects have the most potential for integration (42.3% increment). The key lessons were identified as specific design philosophies and related guidelines for architects.

Research limitations/implications

The findings are limited to single types of products (cars) and buildings (prefabricated houses) in particular regions. The key lessons just present a preliminary evaluation of the application of the design philosophies and related guidelines in nine real-life projects to comply with word limit constraints.

Practical implications

This study could help architects and other practitioners to locate and target and alleviated incompatibilities between MA and OSC. It could also precisely identify integration shortcomings to optimize decision-making as well as technical pathways for possible and effective breakthroughs.

Social implications

This study provides fundamental research as a starting point for further discussion and development. A series of additional in-depth investigations combined with case studies are planned for the future. These could provide alternative study approaches to develop more appropriate architectural design methodologies and more streamlined processes.

Originality/value

The research contributes an alternative architectural perspective when measuring incompatibilities between MA and OSC. The results highlight the implications of precise measurement and provide guidance for architects. These facilitate the effective and successful integration of MA into OSC of buildings and promote the uptake of lean construction (LC) in OSC.

Details

Engineering, Construction and Architectural Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0969-9988

Keywords

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