(1) approved construction design drawings and their descriptions.
(2) Calculation rules of quantities
(3) approved construction organization design or construction scheme
(4) Other relevant technical and economic documents approved.
2, the general principles of engineering quantity calculation
(1) The calculation of quantities must be consistent with the quota.
The division of projects must be consistent with the quota.
The unit of calculation must be consistent with the fixed unit of measurement.
The calculation rules must be consistent with the quota.
(2) The original data and content of engineering quantity calculation must be consistent with the design drawings.
(3) The calculation of engineering quantity must be accurate (three decimal places are reserved in the calculation of engineering quantity, and two decimal places are reserved in the calculation result).