The calculation method is based on the length of pile delivery, i.e.
Sulfur mastic is measured by pile – unit of measurement: m2; Electric welding pile connection according to pile cross-sectional area – unit of measurement: T; According to the weight of wrapped angle steel or wrapped steel plate.
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the distance from the pile top to the natural floor plus 0.5m multiplied by the cross-sectional area, which is calculated in cubic meters.
In the formula, when the calculation result is positive, it means that the remaining soil is transported out, and when it is negative, it means that the soil is taken for backfilling.
The length and width of the groove bottom refer to the external processing surface of the foundation bottom width.
Cast in place pile (1) drilling and sinking pipe cast-in-place pile single driving and re driving: unit of measurement: m3v = pipe outer diameter cross-sectional area × (design pile length + pouring length) design pile length – according to the length of the design drawing, if the valve pile tip is used, including the prefabricated pile tip, and the prefabricated reinforced concrete pile tip is used, excluding the pouring length – is used to meet the filling amount of concrete pouring, according to the design regulations; If there is no regulation, it is calculated as 0.25m..
Calculation rules of excavation earthwork (1) list rules: the excavation of foundation earthwork is calculated by multiplying the bottom area of foundation cushion by the excavation depth according to the size shown in the design drawing.
3、 Calculation rules and formula of backfill quantities 1.
When the design of the hollow part of the pipe pile requires pouring concrete or other filling materials, it shall be calculated separately.
Indoor backfill volume = net area between main walls × Backfill thickness – volume occupied by various ditches, net area between main walls = s bottom – (in L) × Wall thickness + L × Wall thickness): bottom – floor area; L – length of outer wall centerline; L – net length of interior wall.
When it is necessary to slope, the earthwork volume of the slope shall be combined into the total earthwork volume.
It is recommended that one copy be kept for collection! 1、 Calculation formula of quantities I.
2.
Calculation formula of excavated earthwork (1) calculate the volume of excavated earthwork in the list: Earthwork Volume = bottom area of excavated earthwork × Excavation depth.
In the formula, the volume of the buried part of buildings (structures) below the outdoor floor generally includes the volume of cushion, wall foundation, column foundation, underground buildings and structures.
3.
5、 Driving and pressing precast reinforced concrete square pile 1.
Earth transportation quantity = total volume of excavation – total volume of backfill.
Earthwork transportation shall be calculated in cubic meters according to different transportation modes and distances.
4、 Earth transportation calculation rules and formulas earth transportation refers to transporting the excess soil after excavation to the designated place, or taking soil from the designated place for backfilling when the backfill is insufficient.
Backfill volume of foundation trench and foundation pit = excavated volume of foundation trench (PIT) – volume of buried part of buildings (structures) below the designed outdoor floor.
2.
6、 Driving and pressing prestressed reinforced concrete pipe pile shall be calculated by volume according to the design pile length, and the length shall be calculated according to the full length including the pile tip.
This process of completing the pile driving with the help of tool pile (generally 2 ~ 3M long, made of hardwood or metal) is called “pile delivery”.
The unit of measurement is m3, and the formula is as follows: v = pile cross-sectional area × (pile feeding length + 0.5m) pile feeding length – Design pile top elevation to natural floor.
Backfill thickness refers to the total thickness of indoor and outdoor height difference minus ground cushion, leveling layer and surface layer.
site leveling (excavation, filling, transportation and leveling of buildings with site thickness within ± 30cm) 1.
Delivery of reinforced concrete square pile (pile delivery): when the design requires that the top of reinforced concrete pile be driven below the ground, the pile driver must use tool pile to complete the pile driving.
(2) Norm rule: foundation trench excavation: v = (a + 2C + k) × H）H × L。 Where: V – earthwork volume of foundation trench; A — groove bottom width; C — width of working face; H — depth of foundation trench; L — length of foundation trench The length of outer wall foundation trench shall be calculated based on the center line of outer wall, the length of inner wall foundation trench shall be calculated based on the net length of inner wall, and the overlapping of handover shall not be deducted.
The unit of measurement is m3, and the volume calculation formula is as follows: v = pile cross-sectional area × The design pile length (including the length of the pile tip) is calculated by the quantity of core grouting in the pile, and the unit of measurement is m3v = the inner diameter and cross-sectional area of the pipe pile hole × Design core filling depth VII.
The virtual volume of the pile tip shall not be deducted, and the hollow volume of the pipe pile shall be deducted.
(2) Quota rule: according to the size shown in the design drawing, the area is calculated by adding 2 meters to each side of the outer edge line of the building’s outer wall.
The area of the groove bottom shall be the length of the groove bottom multiplied by the width of the groove bottom.
Calculation formula of leveling site s = (a + 4) × (B + 4) = s bottom + 2L outside + 16, where: S – quantity of site leveling; A — length of outer edge line of exterior wall in the direction of building length; B — length of outer edge line of exterior wall in width direction of building; S bottom – floor area of the building; L – perimeter of outer edge line of exterior wall of building.
(2) Quota rule: the volume of manual or mechanical earth excavation shall be calculated by multiplying the area of trench bottom by the excavation depth.
Foundation pit excavation: v = 1 / 6h [a × B+a × b+(A+a) × (B+b)+a × b]。 Where: V – volume of foundation pit; A – length of upper opening of foundation pit; B — width of upper opening of foundation pit; A — length of foundation pit bottom; B — width of foundation pit bottom.
Calculation rules for site leveling (1) list rules: calculated by the area of the first floor of the building according to the size shown in the design drawing.
This paper sorts out all the formulas commonly used in the construction site, including: engineering quantity calculation formula; Weight calculation formula of various steels; Common formulas and charts in the construction industry.
2.
Pile extension: pile extension refers to that the first pile is driven into the site according to the design requirements and prefabricated in sections by the general plant of the pile, and the second pile is vertically lifted and connected with the first pile before driving.
The unit of measurement is m3, and the volume calculation formula is as follows: v = pile cross-sectional area × Design pile length (including pile tip length) 2.
2、 Calculation of foundation earthwork excavation 1.
The volume of driving precast reinforced concrete pile shall be calculated by volume according to the design pile length, and the length shall be calculated according to the full length including the pile tip, and the virtual volume of the pile tip shall not be deducted.
The formula is applicable to the calculation of site leveling quantities of any building or structure composed of rectangles.
