Rework investigation in residential building projects: Cost, factors and effects

Q2 Engineering

International Review of Applied Sciences and Engineering Pub Date : 2023-10-03 DOI:10.1556/1848.2023.00694

Ibrahim Mahamid

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引用次数: 0

Abstract

Abstract This article aims at investigating rework cost, factors and effects in residential building projects in the West Bank – Palestine. Questionnaire survey is used to collect and rank the main factors and effects of rework from consultants' and constructors' point of view. Respondents show that more than 80% of the projects completed with rework cost of value greater than 5% of the total project cost. Overall, respondents' view concludes that the top rework factors include: mistakes in design, unskilled labors, unqualified subcontractors, non-conformance with required specifications, and bid awarding policy. Respondents indicate that the main effects of rework are cost overrun, project time extension, material waste excess and profit reduction. Spearman correlation test concludes a good correlation between contractors and consultants in ranking of rework factors and effects. Data collected from 47 residential projects reveal a high rework impact on cost overrun in construction projects. The results of this study would be helpful for researchers and professionals to guide their efforts to minimize rework in construction projects and to improve projects outcomes in term of cost, time and quality.

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住宅建筑工程返工调查:成本、因素及影响

摘要本文旨在调查约旦河西岸-巴勒斯坦地区住宅建筑工程的返工成本、因素及其影响。采用问卷调查的方法，从顾问和建设者的角度收集和排序返工的主要因素和影响。受访者表示，超过80%的返工成本价值超过项目总成本的5%。总体而言，受访者的观点得出结论，最重要的返工因素包括:设计错误、不熟练的劳动力、不合格的分包商、不符合要求的规范和中标政策。受访者指出，返工的主要影响是成本超支、项目时间延长、材料浪费过剩和利润减少。Spearman相关检验表明，承包商和顾问在返工因素和效果的排序上具有良好的相关性。从47个住宅项目收集的数据显示，在建筑项目中，返工对成本超支的影响很大。本研究的结果将有助于研究人员和专业人员指导他们在建设项目中尽量减少返工，并在成本，时间和质量方面改善项目成果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Review of Applied Sciences and Engineering Materials Science-Materials Science (miscellaneous)

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

46 weeks

期刊介绍： International Review of Applied Sciences and Engineering is a peer reviewed journal. It offers a comprehensive range of articles on all aspects of engineering and applied sciences. It provides an international and interdisciplinary platform for the exchange of ideas between engineers, researchers and scholars within the academy and industry. It covers a wide range of application areas including architecture, building services and energetics, civil engineering, electrical engineering and mechatronics, environmental engineering, mechanical engineering, material sciences, applied informatics and management sciences. The aim of the Journal is to provide a location for reporting original research results having international focus with multidisciplinary content. The published papers provide solely new basic information for designers, scholars and developers working in the mentioned fields. The papers reflect the broad categories of interest in: optimisation, simulation, modelling, control techniques, monitoring, and development of new analysis methods, equipment and system conception.