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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,6. Types of Cost Estimate,Design estimates,Bid estimates,Control estimates,Words,Screening estimates,Preliminary estimates,Detailed estimates,Subcontractor quotations,Quantity takeoffs,Budget estimate for financing,Notes 1,As the bridge type is selected, suppose that e.g. the technology is chosen to be a tied arch bridge instead of some new bridge form, a preliminary estimate is made on the basis of the layout of the selected bridge form on the basis of the preliminary or conceptual design.,Notes 2,If all or part of the construction is to be undertaken by the general contractor, a bid estimate may be prepares on the basis of the quantity takeoffs from the plans provided by the owner or on the basis of the construction procedures devises by the contractor for implementing the project.,Notes 3,However, the contractor may want to assess the actual cost of construction by considering the actual construction procedures to be used and the associated costs if the project is deemed to be different from typical designs.,Notes 4,Consequently, the detailed estimate is often used at the budget estimate since it is sufficient definitive to reflect the project scope and is available long before the engineers estimate.,
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