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 formula of excavated earthwork (1) calculate the volume of excavated earthwork in the list: Earthwork Volume = bottom area of excavated earthwork × Excavation depth（ 2) Quota 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 formula is as follows: v = pile cross-sectional area ×（ Pile feeding length + 0.5m) pile feeding length – Design pile top elevation to natural floor.
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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 not specified, it shall be calculated as 0.25m（ 2) Rammed expanded pile: unit of measurement: m3v1 (primary and secondary rammed expanded) = inner diameter and cross-sectional area of standard pipe × Design ramming and expanding feeding length (excluding precast pile tip) V2 (concrete pouring in the last pipe) = cross-sectional area of outer diameter of standard pipe ×（ Design pile length + 0.25) design ramming and expanding feeding length – calculated according to the design regulations（ 3) Quantity of bored concrete cast-in-place pile, unit of measurement: m3 soil drilling hole v = pile diameter cross-sectional area × Depth from natural ground to rock surface; Rock drilling hole v = pile diameter and cross-sectional area × Depth into rock and quantity of concrete pouring, unit of measurement: m3v = pile diameter and cross-sectional area × Effective pile length: if there are provisions in the design of effective pile length, it shall be subject to the provisions.
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 soil borrowing and backfilling.
Earthwork transportation shall be calculated in cubic meters according to different transportation modes and distances.
The quantities are calculated in cubic meters according to the solid volume IX, cement mixing pile and powder spraying pile with the size shown in the design drawing, v = (design pile length + 500mm) × Design pile cross-sectional area (if there are design requirements, it shall be according to the design length).
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.
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.
Excavation earthwork calculation rules (1) list rules: the excavation of foundation earthwork shall be calculated by multiplying the bottom area of foundation cushion by the excavation depth according to the dimensions shown in the design drawing（ 2) Quota rule: the volume of manual or mechanical excavation shall be calculated by multiplying the area of trench bottom by the excavation depth.
The calculation method is based on the length of pile delivery, i.e.
8、 Manual hole digging pile (1) quantity of manual hole digging: unit of measurement: m3v (manual excavation) = peripheral cross-sectional area of retaining wall × Hole forming length hole forming length – from natural floor to design pile bottom elevation V (silt, quicksand, rock) = actual excavation (chiseling) quantity (2) quantities of brick, concrete retaining wall and cast-in-place pile core concrete: unit of measurement: m3.
This paper sorts out all the commonly used formulas on the construction site, including: calculation formula of quantities; Weight calculation formula of various steels; Common formulas and charts in the construction industry.
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site leveling (excavation, filling, transportation and leveling of buildings with site thickness within ± 30cm) 1.
The virtual volume of the pile tip shall not be deducted, and the hollow volume of the pipe pile shall 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 pile tip) is calculated based on the quantities of core grouting in the pile, and the unit of measurement is m3v = inner diameter and cross-sectional area of pipe pile hole × Design core filling depth VII.
the distance from the pile top surface to the natural floor plus 0.5m multiplied by the cross-sectional area, which is calculated in cubic meters.
Delivery of reinforced concrete square pile (pile delivery): when the design requires that the top of reinforced concrete pile is driven below the ground, the pile driver must complete the pile driving with the help of tool pile.
When the design of the hollow part of the pipe pile requires pouring concrete or other filling materials, it shall be calculated separately.
2.
3、 Calculation rules and formula of backfill quantities 1.
3.
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.
5、 Driving and pressing precast reinforced concrete square pile 1.
The length and width of the groove bottom refer to the external processing surface of the foundation bottom width.
4、 Calculation rules and formulas of earthwork transportation: Earthwork 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 = excavation volume of foundation trench (PIT) – volume of buried part of buildings (structures) below the design outdoor floor.
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（ 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.
It is recommended that one copy be kept for collection! 1、 Calculation formula of quantities I.
The area of the groove bottom shall be the length of the groove bottom multiplied by the width of the groove bottom.
This process of pile driving with the help of tool pile (generally 2 ~ 3M long, made of hardwood or metal) is called “pile delivery”.
Pile extension: pile extension refers to that the first pile is driven and the second pile is vertically lifted and connected with the first pile before driving.
Earth transportation quantity = total volume of excavation – total volume of backfill.
6、 The 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.
The quantities of biaxial shall not be calculated repeatedly, and the overlapping between pile groups shall not be deducted.
If there are no provisions, it shall be subject to the following formula: effective pile length = Design pile length (including pile tip length) + pile diameter, design pile length – pile top elevation to pile bottom elevation, foundation over pouring length – it shall be calculated separately according to the design requirements.
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), where: bottom – floor area; L – length of outer wall centerline; L – net length of interior wall.
Source: China curtain wall network and Zhulong project cost forum.
10、 Long spiral or rotary excavation bored pile, calculated in cubic meters, v = (design pile length + 500mm) × Design pile section area or spiral outer diameter area (if there are design requirements, it shall be based on the design length).
The backfill thickness refers to the indoor and outdoor height difference minus the total thickness of ground cushion, leveling layer and surface layer.
Calculation formula for site leveling s = (a + 4) ×（ B + 4) = s bottom + 2L outer + 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 the width direction of building; S bottom – floor area of the building; L – perimeter of outer edge line of exterior wall of building.
When grading is required, the earthwork volume of grading shall be combined into the total earthwork volume.
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.
11、 The hole forming and grouting in the hole of anchor shotcrete wall protection of foundation pit shall be calculated by extension meter according to the design drawing..
The formula is applicable to the calculation of site leveling quantities of any building or structure composed of rectangles.
Quantities of mud transportation: unit of measurement: m3, and the quantities are calculated according to the quantities of pore forming.
2、 Foundation earthwork excavation calculation 1.
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