The determination of the composite unit price is a key step in the billing of projects. The combined unit price is the labour, material, mechanical usage, management and profit required to complete a specified unit of measure, taking into account the sum of the costs of the risk factors. Specifically, the following steps could be taken:
1. Detailed analysis of the project volume list: first, each element of the project volume list needs to be carefully read and understood, and the scope and technical requirements of each project defined。

2. Calculation of direct costs: the costs of the manual, material and mechanical shifts required to complete the sub-project are calculated separately for the selection of suitable quotas or reference market price information according to the characteristics of the project. This step is the basis for the formation of a composite unit price。
3. Consideration of management fees and profits: a certain percentage of the management fee and expected profit margin of the enterprise is added to the direct cost, reflecting in part the management and expected benefits of the construction enterprise's contribution to the completion of the project。

4. Risk factor considerations: in the course of the implementation of the project, there may be a number of uncertain risks (e. G., material price increases, policy adjustments, etc.) that require appropriate setting of risk costs in the composite unit price。
5. Consolidated calculation and reconciliation: summarize the above costs to form the final combined unit price. It is also important to ensure that all data are accurate and conform to the relevant legislation and contractual requirements。

6. Optimization of adjustments: depending on the actual circumstances or requirements of the solicitation documents, an appropriate adjustment to the initially determined composite unit price may be required to meet the best offer strategy。
The above steps allow for a more scientifically sound determination of the combined unit price in the inventory of the projects。




