ANALYSIS OF REWORK IN CONSTRUCTION INDUSTRY CASE STUDY –CLIENT AND CONTRACTOR

Abstract

The importance of construction industry is approved in all communities. It is one of the major industries in the economic growth and civilization. A huge amount of money, time and energy consuming in this part indicate the important role of this industry. Construction industry not only includes buildings construction, but also covers roads, bridges, dams and skyscrapers construction. The methods of construction improved through thousands of years and new construction technologies emerged meanwhile. As technologies are improved nowadays, construction industry is getting automated and prefabrication method becomes very popular in many countries. Although the role of human in construction is decreased in recent years, still human has a major role, so mistakes are still exist. In the process of construction, mistakes frequently occur and they lead to reworks indifferent stages of construction. In general, rework and wastages are known as non-value adding symptoms that affect the productivity and performance in construction projects and probably the most complete definition of rework is provided by Ashford which defines rework as the procedure that is making an item to adjust with the original requirements by correction or completion. Rework may happen because of the lack of quality control, insufficient maintenance, using unskilled workers and inadequate tools, etc. The reworks sometimes are happenings demolishing and rebuilding and sometimes as requirement of extra works. The most important effect of rework is on productivity and productivity influences cost, time, and quality within the construction project. According to Kazaz and Ulubeyli enhancement of productivity has many advantages such as reducing total cost and production duration, improving quality, increasing product market share, and increasing salaries and employment. Generally, productivity growth is the most important economic indicator through it fast living standard growth could be attained