Calculation method of concrete volume
Draw a cross-section with equal section with CAD. Aa command area and multiply it by height to get the square (note that the unit is meters).
Extended data 1. Earthwork volume shall be calculated according to the natural dense volume before excavation. See Table 13 on the Comprehensive Unit Price of the Bill of Quantities of Construction Projects in Henan Province for the earthwork calculation coefficient (the virtual soil in the table refers to the soil naturally piled up without pressure filling; Natural dense solid soil refers to the undisturbed natural soil; Compacted soil refers to the compacted soil by layers according to the requirements of specifications; Loose fill refers to the excavated natural soil, which is naturally accumulated in the pit without compaction)
2. The average thickness of excavation shall be determined according to the average thickness between the measured natural ground elevation and the designed ground elevation. The excavation depth of foundation earthwork and stonework shall be determined according to the elevation of the bottom surface of foundation cushion to the elevation transported to the construction site. If no elevation is sent to the construction site, it shall be determined according to the natural ground elevation.
3. The excavation, filling and leveling of construction sites with a thickness of less than 30cm should be listed as leveling sites in A 1. 1. Level the site according to the design size of the building and the area of the first floor. The vertical layout of excavation or hillside cutting beyond plus or minus 30cm shall be listed according to the items in A 1. 1. Vertical excavation and pipeline supports, sewers, septic tanks, manholes and other sporadic projects do not calculate the flat site. Walls, ditches, water towers and chimneys shall be leveled according to the cushion area of foundation pit.
4. Excavation includes strip foundation, independent foundation, whole house foundation (including the foundation below) and equipment foundation excavation. Strip foundations should be listed according to different bottom widths and depths, and independent foundations and whole house foundations should be listed according to different bottom areas and depths. The quantities are calculated according to the dimensions shown in the design, and the bottom area of foundation cushion is multiplied by the excavation depth. Among them, the trench length and the outer wall are calculated according to the center line length shown in the figure; The interior wall is calculated according to the net long line length between the bottom of the foundation cushion as shown in the figure; The volume of internal and external protrusions (chimneys, chimneys attached to walls, etc.). ) into the trench earthwork quantity calculation.
5. The earthwork excavation of the pipe trench shall be listed separately, and the engineering quantity shall be calculated by multiplying the length of the center line of the pipe trench shown in the design drawing by the cross-sectional area. For trench design, the average depth shall be calculated from the elevation of the bottom area of trench cushion to the elevation delivered to the construction site; When there is no trench design, the depth of the directly buried pipeline is calculated according to the average depth from the elevation of the outer surface of the pipe bottom to the elevation delivered to the construction site. If the width of the ditch bottom is specified in the design, it shall be calculated according to the size specified in the design; If there is no provision in the design, it can be calculated according to the width specified in Table 2.
References:
Rules for Calculation of Engineering Quantity in Baidu Encyclopedia