VOL. 9, NO. 12, DECEMBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. www.arpnjournals.com 1 IMPLEMENTION WASTES IN CONSTRUCTION Mir Heydar Hashemi 1 , Nima Haj Mohammad Hassani Mamaghani 2 and Mojtaba Daei 1 1 Department of Civil Engineering, Engineering Faculty, Azarbaijan Shahid Madani University, Tabriz, Iran 2 Sama Technical and Vocational Training College, Islamic Azad University, Mamagan Branch, Tabriz, Iran E-Mail: mh_hashemi@azaruniv.edu ABSTRACT The history of investigation on waste mainly revolves around the recycling of the waste, reusing the waste materials, and the effect of waste on environment. No considerable studies have dealt with the identification of the causes of waste. In the present study, the development of waste has been categorized in three groups of 1. Waste due to designing, 2. Waste due to implementation, and 3. Waste due to utilization. This study focuses on the waste due to implementation. It provides a redefinition of construction waste. Overpopulation and the decrease of resources require a correct and wise use of them. In all countries, a huge amount of the national capital is devoted to construction that signifies the importance of investigations on waste to minimize it in the construction projects. The present study aims to introduce the causes of waste, and to present a checklist to control and minimize it. Keywords: waste, implementation standards, resource losses. 1. INTRODUCTION The The present study investigates the various reasons and factors of causing waste in construction and building projects. Waste management can be taken into account in two different levels: first, through managing those factors that cause waste, and second, through managing the wasted materials by reusing or recycling them, and studying the effect of these materials on the environment. The factors of causing waste are divided into three categories: 1. Waste due to designing, 2. Waste due to implementation, and 3. Waste due to utilization. This study particularly deals with the wastes due to implementation that stand among the first level wastes. The wastes due to design and utilization have been undertaken in another study. Identifying the causes of waste can lead us to codify policies to prevent them. Nowadays, the optimized use of the resources, and the selection of the best option is the most important activity of the construction managers. The main concern of the building sites is to gain the optimized use of the resources and the capital, and to demolish their wastage. All the examples of waste are related to Iran; consequently, some may exclusively concern the case of Iran, and on the other hand, there might be cases in other countries that might not be observed in the constructions taking place in this country. The overall aim of the study is to identify and enlist the causes of waste that can eventually result in their localization for Iran.  The Significance of the Study In regards to scientific perspectives: The presented categorization of waste is novel and differs from the categorizations in the literature of the waste study; this adds to the significance of this study. The literature indicates that in the studies, the waste of building material has been regarded as “unwanted materials”, and waste has been an “unfixed” subject matter (Wikipedia, 2013). In this study, a different definition of waste is presented, and the objective is to prevent waste from happening.  In regards to the implementation managers and organizational needs 10% to 15% of the input materials and resources in sites are wasted that directly affect the costs of the projects; moreover, the reduction or even the demolition of waste is a totally management concern that turns this study into an important one for the managers and the organizational needs. The objectives of the study: The aim of this study is to identify, minimize, and possibly eliminate wastes from the construction cycle. In practice, IPMA invites every organization to create its specific ICB, called NCB7. Today, approximately, thirty European countries, and countries such as Egypt, India, and China are deploying NCB Standard. Since the costs of every construction project consist of 10% waste that can vary for every country due to different implementation methods, waste management is suggested to be considered in NCB Standard. Spatial domain of the study: the study deals with the projects of residential and office sites of Iran.  The time span of the study By the passage of time, new implementation techniques and machinery are introduced, and the construction materials change in type that can affect the amount of waste, the temporal domain of the study matters. The samples and observations of the study are related to 2000- 10 decade.  The hypotheses of the study Four hypotheses are raised for the study; 1. The causes and factors of waste can be identified and managed; 2. The reduction of waste is possible by training implementation equips; 3. Building owners, advisors, contractors, and building operators treat the problem of waste in a targeted, specialized, and flow-charted way; 4. The type of contracts (competitive bid, or agreement contracts) affect the amount of waste. The Definition of Waste: Although various definitions are given for waste, there has been no