Quantity calculation
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The installation work at our unit has been completed; how should we verify and settle the amount due with the installation company?
Hello, OP. The calculation of the project volume requires adherence to the quota standards, which detail the prices for each type of installation, including costs for labor, materials, machine usage time, and auxiliary materials. Additional adjustments are also needed, such as multiplying by certain coefficients; it’s quite complicated in general. It is recommended that the poster learn the *fixed quota standards.
Thank you. We want to calculate the actual volume of work – should we do it based on the drawings or by conducting actual measurements?
What do you mean by that? You’re the project owner, right? Do you want to pay the contractor less for the work done? Consider the construction methods and losses involved, and see how your contract is structured
First, look at the contract provisions. Generally, contracts specify such terms; in most cases, the quantity indicated in the drawings is taken as the basis. Any changes require calculation based on change orders. There are also contracts with a fixed total price, where the workload specified in the drawings corresponds to a single total amount.
Well, it should be in accordance with the terms agreed upon in the contract between the two parties.
Generally, it’s the amount specified in the drawings plus the work quantities from on-site visas or work orders
Before signing a contract, an estimate is usually made based on the drawings. It is then determined whether it is a fixed-price contract or a unit-price contract. In the case of a fixed-price contract, it is checked whether there are any changes or endorsements. For a unit-price contract, it is verified whether the contract stipulates that the actual measurements shall be used as the basis
The calculation of the workload for engineering projects is carried out in accordance with relevant **standard rates**, and it is also based on the project drawings as well as various approvals issued during the construction process. The entire process of performing calculations and verifications is rather complicated; it’s better to outsource it according to the contract.
Under the unit price contract model, how is the volume of pipeline installation work in chemical engineering projects measured? If the pipeline installation contractor does not follow the plans, it is impossible for the project owner to monitor everything on site – so how can actual measurements be taken?