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|Title||Managing and Minimizing Construction Waste in Gaza Strip|
Waste has been recognized as a major problem in the construction industry. Not only does waste have an impact on the efficiency of the construction industry but also on the overall economy of the country. It's proved that the construction material waste has a negative effect on the environment. The main objective of this study is to identify the main waste causes in Gaza Strip construction industry in order to establish an initial framework for future studies to develop methods for prevention and elimination of waste causes inherent in the construction process. The study aims also to determine the level of waste within the construction industry and to identify waste minimization strategies employed by construction firms in Gaza Strip. The objectives of this research have been achieved through eighty questionnaires received from construction firms operating in Gaza Strip. The results of analyzing 92 causes of material waste showed that the main causes of material waste are: reworks that don't comply with drawings and specifications, rework due to workers’ mistakes, conversion waste from cutting uneconomical shapes, ordering of materials that do not fulfill project requirements defined on design documents, and waiting for replacement, inappropriate storage leading to damage or deterioration, use of incorrect materials that require replacement, poor workmanship, burglary, theft and vandalism and lack of workers or tradesmen or subcontractors’ skill. The results of analyzing 92 causes of time waste showed that the main causes are: rework that don't comply to drawings and specifications, lack of materials (closure), rework due to workers’ mistakes, effects of social and political conditions, owner’s poor communication with the construction parties and government authorities, equipment frequent breaking down, slow in making decisions, ambiguities, mistakes, and inconsistencies in drawings and using untrained labours. The results indicated that the level of material waste in Gaza Strip construction industry is fairly high and it is higher than the nominal figures due to managerial problems. The results indicated that a sizable proportion of construction companies have specific policies for minimizing waste and the majority of companies made efforts to minimize waste at source. However, unlike recycling, it is perceived to be more effective only when undertaken in combination with other waste reduction strategies. The study concluded that the most important benefits for considering construction waste are as follows: it helps contractors in pricing bids, to know the exact required quantities for project executive, to prepare an accurate schedule; it participates in project success and achieving profits. The results of this study recommended that there is a need to establish a new construction waste department in the ministries and municipalities, to develop waste management policies and develop the effective strategy to reduce construction waste. The study recommended the owners to take the waste management history of the contractors as a criterion in awarding contracts. The study recommended the designers to pay attention to details and dimensioning of materials and components during design. The study also recommended the contractors to assign qualification staff and workforce in construction projects and to prepare waste management plan.
|Publisher||الجامعة الإسلامية - غزة|
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