# All cost calculation formulas of construction industry and attached drawings

The area of the groove bottom shall be the length of the groove bottom multiplied by the width of the groove bottom.

The formula is applicable to the calculation of site leveling quantities of any building or structure composed of rectangles.

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.

2、 Foundation earthwork excavation calculation 1.

The calculation method is based on the length of pile delivery, i.e.

The length and width of the groove bottom refer to the external processing surface of the foundation bottom width.

Mud transportation quantities: unit of measurement: m3, and the quantities shall be calculated according to the quantities of hole forming works.

Earth transportation quantity = total volume of excavation – total volume of backfill.

(2) rammed expanded pile: the unit of measurement: m3v1 (primary and secondary rammed expanded) = the cross-sectional area of the inner diameter of the 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.

(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 volume calculation formula is as follows: v = pile section product × 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.

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.

for long spiral or rotary excavation bored cast-in-place pile, calculated in cubic meter, v = (design pile length + 500mm) × Design pile cross-sectional area or spiral outer diameter area (if there are design requirements, the length 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.

First drive the first pile, vertically lift the second pile and connect it with the first pile, and then continue to drive the sulfur cement.

X.

According to the pile – unit of measurement: m2; according to the pile cross-sectional area, electric welding pile extension – unit of measurement: T; according to the wrap angle Weight of steel or steel clad plate.

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.

2.

Xi.

When grading is required, the earthwork volume of grading shall be combined into the total earthwork volume.

The virtual volume of the pile tip shall not be deducted, and the hollow volume of the pipe pile shall be deducted.

(3) the quantity of bored concrete cast-in-place pile, the 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 cross-sectional area × Depth into rock and quantity of concrete pouring, unit of measurement: m3v = pile diameter and cross-sectional area × Effective pile length, effective pile length shall be designed according to the regulations if there are regulations, but not according 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 – shall be calculated separately according to the design requirements.

Manual hole digging pile (1) Quantity of manual hole excavation: 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.

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2.

(2) Quota rule: the volume of manual or mechanical excavation shall be calculated by multiplying the area of trench bottom by the 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.

VI.

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The quantities of biaxial shall not be calculated repeatedly, and the overlapping between pile groups shall not be deducted.

3.

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.

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 – the designed pile top elevation to the natural floor.

(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.

Earthwork transportation shall be calculated in cubic meters according to different transportation modes and distances.

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 includes the prefabricated pile tip and the prefabricated reinforced concrete pile tip does not include the pouring length – it is used to meet the filling amount of concrete pouring, according to the design regulations; if there is no specification, it is calculated as 0.25m.

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 (length, if there are design requirements, according to the design length).

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 5、 Driving and pressing precast reinforced concrete square pile 1.

The backfill thickness refers to the indoor and outdoor height difference minus the total thickness of ground cushion, leveling layer and surface layer.

1.

3、 Calculation rules and formula of backfill quantities 1.

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.

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.

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.

Hole forming of foundation pit anchor shotcrete wall and grouting in the hole..

Pile extension: pile extension refers to the prefabrication and transportation to the site in sections according to the design requirements according to the general plant of the pile.

This process of pile driving with the help of tool pile (generally 2 ~ 3M long, made of hardwood or metal) is called “pile delivery”.

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.

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.

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.

Calculation formula for site leveling 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 the width direction of building; S bottom – floor area of the building; L – perimeter of outer edge line of exterior wall of building.

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.

VIII.

When the design of the hollow part of the pipe pile requires pouring concrete or other filling materials, it shall be calculated separately.

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