(2)Problem about contract form. Contract form in the tendering document is very important. Common phenomenon is that the budget price exceeds the budget price; contract price exceeds the budget price, settlement price over the contract price. Under the mode of BOQ valuation, if BOQ is not accurate or flaw is more, then it may appear the phenomenon that contracts more opening. How to control the opening of the contract? For small-scale projects and short duration projects can adopt the fixed price contract.
(3)Material bargaining problem. Materials and equipment bargaining range should be as few as possible, should be limited to a higher grade on the market, price bidding large, and is not easy to determine the materials and equipment. Material and equipment bargaining range influence the size of the opening of the contract. For the majority of ordinary materials prices should be in the bidding by the competition among the bidders to confirm, but not confirmed in the course of performance or settlement. When bidding and engineering materials price differentials in risk category, the owner shall undertake the risks of price decline, the contractor shall bear the risk of rising prices. The owners negotiate a price too much, not only increasing the material equipment bargaining workload, and increase the difficulty of cost control. When the two sides on the material aspects of bargaining dispute, it will affect the project schedule and project quality. Of course, as far as possible to reduce material and equipment bargaining range doesn't mean completely abolished bargaining of material and equipment.
(4)Project risk. Risk prediction, and risk management should be an important part. Due to the level of project risk management lag and people's awareness of risk is weak, risk management is part of the project management what is extremely weak, must pay high attention to it. With the formal implementation of project quantity list valuation standard, a consistent with the project insurance and engineering security management of international insurance industry and surveyors industry has be imperative.