In a contractor's rate analysis, why is a material wastage allowance commonly included?
Correct answer: B. To account for unavoidable losses during handling and installation
- A. To increase the measured dimensions of the completed structure
- B. To account for unavoidable losses during handling and installation
- C. To replace the contractor's obligation to store materials safely
- D. To include the employer's land acquisition and design expenses
Explanation
A reasonable wastage allowance covers losses caused by cutting, breakage, spillage, or handling during construction. It should be based on the material and work method, not used to inflate the completed measurement.
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Construction management covers planning, scheduling, resource control, contracts, procurement, site organisation, safety, quality assurance and project documentation. Estimation includes quantity take-off, rate analysis, bill preparation, valuation and cost control, with attention to the difference between direct and indirect costs and between an estimate, a tender and a final account.
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