A STUDY ON IMPACTS OF WASTAGE AND DELAY IN REWORK OF REINFORCED CONCRETE STRUCTURES
Author(s):
VIDYA J S
Keywords:
Abstract
In the construction industry, rework is one of the major reasons that affect the success of a project. It leads to lessen the quality and productivity, and rises the cost and time of construction. Rework often happens due to poor supervision, insufficient workmanship, incorrect or faulty materials, etc. This project aims to find out the cost of waste and time delay due to reworks in the construction of RC structures, to explore the elements influencing the rework such as contractors, owners, and consultants. Also in this project the rework things, their frequencies, their relationship, and their influence on cost of waste and time delay were inquired. Here is a case study project consisted of three 8-storied buildings was examined and studied, and a questionnaire survey was carried out to collect data. The case study and questionnaire survey discovered that, the reworks affected the cost by 1.80% and 2.0% of construction cost respectively. Also the discovery revealed that, the time delay of rework in case study and survey was 4.0% and 5.15% of construction time respectively. It was attained that, the major rework things that affecting the cost were: 1- allotting unsuitable concrete materials, 2- altering the designed steel bar diameters due to scarcity, and 3- formation of cold joint due to inefficiency of concrete delivering to the site. The major rework things that affecting the delay were: 1- falling excavation walls, 2- over excavation, and 3- falling down formwork materials from top stories.
Article Details
Unique Paper ID: 163015

Publication Volume & Issue: Volume 0, Issue no

Page(s): 446 - 450
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