# All the calculation formulas of the construction industry (with charts), one for each person!

8、 Manual hole digging pile (1) manual hole digging quantity: unit of measurement: m3v (manual excavation) = peripheral cross-sectional area of retaining wall × hole forming length hole forming length – natural floor to design pile bottom elevation V (silt, quicksand and rock) = actual excavation (chiseling) quantity (2) quantity of brick, concrete retaining wall and cast-in-place pile core concrete: unit of measurement: m3, the quantity shall be calculated according to the actual size in the design drawing Volume 9

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(3) The unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3; the unit of measurement is m3（ Including pile tip length) + pile diameter design pile length – pile top elevation to pile bottom elevation foundation over grouting length – calculated separately according to design requirements

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According to the quota, the calculation method is based on the length of pile delivery, that is, from the top of pile to the natural floor plus 0.5m times the cross-sectional area in cubic meters

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2

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The length and width of groove bottom refer to the outer processing of foundation bottom width

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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 bottom surface of foundation pit; b-width of bottom surface of foundation pit

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The length of the outer wall foundation trench is calculated by the outer wall center line, the length of the inner wall foundation trench is calculated by the net length of the inner wall, and no deduction will be made if it is overlapped

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The net area between the main walls = s bottom – (L middle × wall thickness + L inner × wall thickness) in the formula: bottom – bottom floor building area; l middle – ——The length of the center line of the exterior wall and the net length of the interior wall

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Unit of measurement: m3, volume calculation formula is as follows: v = pile cross-sectional area × design pile length (including pile tip length) 2

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Foundation pit excavation: v = 1 / 6h [a × B + a × B + (a + a) × (B + b) + a × b]

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10、 For long spiral or rotary drilling bored pile, v = (design pile length + 500mm) × design pile cross section area or spiral outer diameter area is calculated in cubic meter (if the length has design requirements, the design length shall be adopted)

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

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6、 The driving and pressing of prestressed reinforced concrete pipe piles shall be calculated by volume according to the designed pile length, and the length shall be calculated by the total length including the pile tip

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Calculation formula of earthwork excavation (1) volume of earthwork excavation calculated by Bill: Earthwork Volume = bottom area of earthwork excavation × excavation depth

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2、 Foundation earthwork excavation calculation 1

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Volume of backfill for foundation trench and foundation pit = volume of excavation for foundation trench (PIT) – volume of embedded part of buildings (structures) below the designed outdoor floor

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11、 The hole forming and grouting of foundation pit anchor shotcrete retaining wall shall be calculated according to the design drawing and the extension meter

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Quantity of mud transportation: unit of measurement: m3, and the quantity is calculated according to the quantity of drilling

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The volume of driving precast reinforced concrete pile shall be calculated by volume according to the designed pile length, and the length shall be calculated by the total length including pile tip, and the virtual volume of pile tip shall not be deducted

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Bored pile (1) single driving and repeated driving of bored cast-in-place pile: unit of measurement: m3v = outer diameter cross-sectional area of pipe × (design pile length + additional grouting length) design pile length root According to the length of the design drawing, if the valve pile tip is used, it includes the precast pile tip, and if the precast reinforced concrete pile tip is used, it does not include the additional pouring length – it is used to meet the concrete pouring filling amount, according to the design provisions; if there are no provisions, it is calculated as 0.25m

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4、 The calculation rules and formulas of earthwork transportation are to transport the surplus soil after excavation to the designated place, or to take the soil from the designated place for backfill when the backfill is insufficient

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(2) Quota rules: according to the design drawings, the area of square meters is calculated by adding 2 meters to each side of the building’s outer wall sideline

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When slope is needed, the earthwork volume of slope shall be incorporated into the total earthwork volume

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(2) Quota rule: foundation trench excavation: v = (a + 2C + K × h) H × L

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The calculation formula of leveling site is s = (a + 4) × (B + 4) = s bottom + 2L outside + 16, in which: s is the quantity of leveling site; a is the length of outer edge line of outer wall in the direction of building length; B is the length of outer edge line of outer wall in the direction of building width; s bottom is the building area of bottom layer of building; L is the perimeter of outer edge line of outer wall of building

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5、 Driving and pressing precast reinforced concrete square pile 1

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Pile connection: pile connection refers to the prefabrication and transportation of the first pile to the site according to the design requirements, the first pile is driven, the second pile is vertically hoisted and connected with the first pile, and then pile driving is continued

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The quantity of soil transportation = total volume of excavation – total volume of backfill

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According to the pile – unit of measurement: m2; according to the pile cross-sectional area electric welding pile connection – unit of measurement: T; according to the weight of angle steel or steel plate

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

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2

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In the formula, the volume of the buried part of the building (structure) below the outdoor floor generally includes the volume of cushion, wall foundation, column foundation, underground buildings and structures

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

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The unit of measurement is m3, and the formula is as follows: v = pile cross-sectional area × (pile delivery length + 0.5m) pile delivery length – Design pile top elevation to the natural floor

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Site leveling (excavation, filling, transportation and leveling of building site thickness within ± 30cm) 1

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(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

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Unit of measurement: m3, the volume calculation formula is as follows: v = pile cross-sectional area × design pile length (including pile tip length) calculation of pile inner core grouting quantity, unit of measurement: m3v = inner diameter cross-sectional area of pipe pile hole × design core grouting depth 7

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2

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3、 Calculation rules and formula of backfill quantity 1

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When the hollow part of the pipe pile is required to be poured with concrete or other filling materials, it shall be calculated separately

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(2) Rammed expanded pile: unit of measurement: m3v1 (primary and secondary ramming) = inner diameter sectional area of standard pipe × design rammed expanded feeding length (excluding precast pile tip) V2 (final pouring concrete in pipe) = outer diameter sectional area of standard pipe × design rammed expanded feeding length (design pile length + 0.25) – calculated according to design specification

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12、 Shotcrete for wall protection shall be calculated in square meters according to the design drawings.

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This article sorts out all the commonly used formulas in construction site, including: calculation formula of engineering quantity; calculation formula of weight of all kinds of steel; common formula chart in construction industry

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Delivery of reinforced concrete square pile (delivery of pile): when the design requires that the reinforced concrete pile top be driven below the ground, the pile driver must use tool pile to complete the pile driving process, which is called “delivery of pile”

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

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The volume of indoor backfill = the net area between the main walls × the thickness of backfill – the volume of various channels

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Cement mixing pile and powder jet mixing pile, v = (design pile length + 500mm) × design pile section area (length, if there are design requirements, the design length)

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Earthwork excavation 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 design drawing size

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Where: V – earthwork volume of foundation trench; a – width of trench bottom; C – width of working face; H – depth of foundation trench; L – length of foundation trench

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

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It is recommended to have one copy for each person and collect it for standby! 1、 Calculation formula of engineering quantity 1

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3

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Calculation rules for leveling site (1) list rules: the first floor area of the building is calculated according to the design drawing size

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The quantities of biaxial piles shall not be calculated repeatedly, and the lap joint between pile groups shall not be deducted

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When the calculation result is positive, it means the surplus soil is transported out, and when it is negative, it means the soil is taken for backfill

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Source: Zhulong forum copyright belongs to the original author  ·. Magnet Recess Former

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