Abstract
Waste on construction site includes non-required materials produced during conducting various construction activities on site. Construction waste contains tor steel, structural steel, cement, sand, metal, woods, painting, and sheeting, tiling, precast blocks etc. Generally percentages allowances for materials wastages considered by estimation engineer are about 2% to 5%. But at actual executing on construction sites it is found, it increases very high up to 10% to 15% on site. Before the starting of construction projects estimated wastage standards are considered for calculations. During actual execution there are deviations observed in material wastage against standard allowance considered, it may high or low depending of various factors. If wastage occurs more than standard considered then contractor will face more cost to project than estimated, results in loss. If wastage occurs less than standards considered during estimate then construction will complete with cost saving, resulting increasing profit and saving in terms of money and environment. More material wastage occurs than standards considered is mainly due to bad handling of construction materials and its storages on site., un clear design and documents, poor quality control, Adcock procurement, negligence, untrained workers and staff, environmental condition, excess use of material, theft etc., resulting increase in construction cost and loss.
Actual material wastage controlling of site is possible with using some techniques like – Strict supervision and control of material, creating an awareness of consequence of waste and educating staff and workers, correct material planning and ordering, intensifying security, effective site management, introducing incentive schemes, improving material storage and handling facility etc. resulting reduction in construction cost and increasing profit as well as maintaining environment.