The Engineering Change Based On The Quantities Bill Valuation Research On The Influence Of The Engineering Cost

Bill-of-Quantities Model is the new mode that is in conformity with market economy, determining price through market competition, and integrated into international practice.《Code of valuation with bill quantities of construction works》 points out:The construction projects that all used of state-owned capital investment or mainly used should execute the valuation mode of bill of quantities determine and calculate the project cost.This paper first introduces the development status of the bill valuation mode in China,and compares the method of project construction cost with Britain America and Japan......., discusses the current problems in the management system for construction cost in China,analysis each stage of the project cost,points out the main cause of the" three-excess" phenomenon in construction cost is--project change.The paper uses the typical projects of The Bill-of-Quantities Model as an example, calculate the different types of project change that impact the percentage of project cost, according to the quantitative analysis of the result, points out the influence degree of various types on the project change is:design changes are dominant in most engineering, followed by the new project, changes of construction conditions, conditions of contract changes, progress schedule changes and technical standard changes have a less affect. With the calculated results, find out control points. This paper presents effective measures through block changes to control project cost at different stages of project implementation. For the construction of the project participants to reference.