1, calculation formula for concrete cushion of strip foundation
Volume of concrete cushion for strip foundation of external wall = length of center line of concrete cushion for strip foundation of external wall × cross-sectional area of concrete cushion.
The volume of concrete cushion for internal wall strip foundation = the net long line length of concrete cushion for internal wall strip foundation × the cross-sectional area of concrete cushion.
2, the whole board foundation, independent foundation cushion volume
Cushion volume = cushion area × cushion thickness
Calculation rules and formulas of engineering quantity of concrete foundation
1, calculation and formula of engineering quantity of strip foundation
Number of external wall strip foundations = length of center line of external wall strip foundations × cross-sectional area of strip foundations
Engineering beam of interior wall strip foundation = net long line length of interior wall strip foundation × cross-sectional area of strip foundation.
Note: The calculation of clearing line should be based on the vertical and inclined layered clearing line of concrete strip foundation.
2. Calculation and formula of engineering quantity of Mantang foundation
Full house foundation engineering quantity = full house foundation bottom area × full house foundation bottom plate vertical part thickness+upper frustum volume.
3, independent foundation (concrete independent foundation and column foundation surface boundary)
(1) Rectangular foundation: V= length× width× height.
(2) Step foundation: V=∑ each step (length× width× height)
(3) truncated square cone foundation: v = v1+v2 =1/6h1× [a× b+(a+a) (b+b)+a× b]+a× b× H2.
Where v 1 is the volume of the frustum at the upper part of the foundation, V2—— is the volume of the cuboid at the lower part of the foundation, h 1 is the height of the frustum, a and b are the length and width of the bottom of the frustum, ab—— is the length and width of the top edge of the frustum, and h2—— is the height of the cuboid at the lower part of the foundation.
Calculation rules and formulas of quantities of concrete columns
1, number calculation of constructional columns
① constructional column volume = constructional column volume+horse tooth difference volume =H×(A×B+0.03×b×n)
Where: h-constructional column height a and b-constructional column section length and width b-bite difference between constructional column and brick wall 1/2 width n-number of sides of horse tooth difference.
2. Frame column
(1) Cast-in-place concrete columns are calculated by volume according to the size shown in the design. The volume of steel bars and embedded iron parts in the component is not deducted. Click here to download the construction technical data for free.
Frame column volume = frame column cross-sectional area * frame column height
The column height is:
A the height of beam-slab column should be calculated from the upper surface of column foot (or the upper surface of floor slab) to the lower surface of the next floor slab.
B The column height of a beamless floor should be calculated from the upper surface of the column foot (or the upper surface of the floor) to the lower surface of the column cap.
The column height of C frame column should be calculated from the upper surface of column base to the top of column.
D precast concrete columns are calculated by volume according to the size shown in the design diagram, and the volume of steel bars and embedded iron pieces in the components is not deducted. They are attached to the corbel of the column and are included in the calculation of the corresponding column volume.
Quantity rules of reinforced concrete beams
1, the general calculation formula of the beam = the cross-sectional area of the beam * the length of the beam is calculated by volume according to the size shown in the design. The volume of steel bars and embedded iron parts in the member is not deducted, and the beam head and beam pad extending into the wall are incorporated into the beam volume.
2. Liang Changfa
When the beam is connected to the column, the beam length is calculated to the side of the column, and when the main beam is connected to the secondary beam, the secondary beam length is calculated to the side of the main beam.
3, the number of geosphere beam
Engineering quantity of exterior wall geosphere beam = centerline length of exterior wall geosphere beam × sectional area of geosphere beam.
Engineering beam of interior wall geosphere beam = net long line length of interior wall geosphere beam × cross-sectional area of geosphere beam.
4, the volume of the foundation beam
Calculation method: foundation beam volume = clear beam length × clear beam height.
Calculation of engineering quantity of reinforced concrete slab
1. General calculation method of cast-in-place slab: the cast-in-place concrete slab is calculated by volume according to the size shown in the design. The volume of steel bars, embedded iron pieces and holes with a single area less than 0.3m2 in the member shall not be deducted. Calculation formula -v = plate length × plate width × plate thickness
2. Beam slab refers to the main beam (secondary beam) and slab casting into a whole. The quantities are calculated according to the sum of beam and slab volumes (including primary and secondary beams and slabs).
3. Flat slab refers to flat slab directly supported by column cap. Its volume is calculated according to the sum of the volumes of the plate and the column cap.
4. A flat plate refers to a plate directly supported by a wall without columns or beams. The engineering quantity is calculated according to the actual volume of the slab.
Calculation rules and formulas of engineering quantity of cast-in-place concrete wall
1. Calculation method of shear wall of cast-in-place frame structure: calculated in m3 according to the size shown in the figure. The volume of openings and holes of doors and windows outside 0.3m2 shall be deducted. Calculation formula: V = wall length × wall height × wall thickness-0.3m2 × door and window opening area × wall thickness.
Among them: wall length-the outer wall is in L, and the inner wall is in L (all columns are counted to the edge of the column); Wall height-from the top surface to the top of the wall. Wall thickness-as shown on the drawing.
Level the site:
Excavation, filling, transportation and leveling of the construction site with a thickness of less than 30cm.
1, site leveling calculation rules
(1) Listing rules: calculated according to the design size and the area of the first floor of the building.
(2) Quota rule: the area of the first floor of the building is calculated according to the size shown in the design.
2. Calculation method of leveling site
(1) Flat site area according to the list rules: Flat site area according to the list rules = first floor building area.
(2) Site leveling area under quota rules: Site leveling area under quota rules = first floor construction area.
3. Preventive measures
(1) The flat site area in some areas is calculated as 2m outside the outer skin line. When calculating, it is calculated according to the figure of 2m outside the external wall, combined with the underlying construction area; Or according to "the center line of 2m ×2 = the area of 2m" and the floor building area. In this case, there will be the following difficulties in calculation:
(1), blocking is troublesome, the arc part is not easy to handle, and errors are easy to occur.
(2) The center line of 2 meters is troublesome to calculate, and it is not easy to calculate.
(3) It is not easy to calculate how much should be deducted.
(2) When bidding under the list environment, the bidder may need to calculate the engineering quantity of leveling the site according to the actual situation on site, and the length of each side is different.
Large excavation earthwork
1, excavation earthwork calculation rules
(1), list rule: the earthwork volume of foundation excavation is calculated according to the size shown in the design, and the area of the bottom of foundation cushion is multiplied by the excavation depth.
(2) Quota rule: the volume of manual or mechanical excavation is calculated by multiplying the area of the trough bottom by the excavation depth. The area of the trough bottom should be multiplied by the width of the trough bottom. The length and width of the trough bottom refers to the outer line of the concrete cushion plus the working face. If there is a drainage ditch, it should be counted as the outer line of the drainage ditch. The volume of drainage ditch should be included in the total earthwork. When sloping is needed, the earthwork volume of sloping should be merged into the total earthwork volume.
2, excavation earthwork calculation method
(1), listing the rules.
(1), calculate the excavation bottom area:
Method 1: Use the area of the ground floor+the area from the outer wall skin to the cushion skin. Calculation of the area from the outer wall sideline to the cushion sideline (calculated by dividing the outer wall sideline into blocks or by "the center line of the outer wall sideline × the outer length"). )
Method 2: Calculate the area of the outer edge line of the cushion in blocks (the same as calculating the building area in blocks).
② Calculation of excavation volume: earthwork volume = excavation bottom area * excavation depth.
(2), quota provisions:
(1), use truncated cone volume formula to calculate the upper and lower bottom areas of excavation.
V =1/6× h× (above s and below 4×S+S in +S) to calculate earthwork (where above s is the upper bottom area and below s is the middle cross-sectional area). as follows
S = the area under the floor+the area from the external wall skin to the excavation bottom line (including working face, drainage ditch, sloping, etc. ).
Calculate s and s in the same way.
3, the difficulty of excavation calculation
(1) When calculating the area of the upper, middle and lower bottom surfaces of excavation, it is necessary to calculate the center line of the "line diagram from each sideline to the outside of the external wall", which is more troublesome to calculate (the same as leveling the site).
2. The cross-sectional area is not good.
(3) The overlapping place is not easy to handle (the same as leveling the site).
(4) If some slope coefficients are inconsistent, it is difficult to deal with them.
4. The relationship between large excavation and foundation trench excavation and foundation pit excavation
The geosyncline with a width of less than 3m and a length of less than 3 times or an area of less than 20m2 is the geosyncline, and the rest is earthwork excavation.
Mantang foundation cushion
1, number of full-house foundation cushions:
As shown in the figure, (1), plain soil cushion volume (2), lime soil cushion volume (3) and concrete cushion volume (3) are cushion templates.
2. Calculation method of the whole house foundation cushion quantity
(1), calculation of plain soil cushion volume:
The earthwork volume is calculated by the formula of truncated cone: the volume of plain soil cushion =1/6× h× (above s+4× s+below s).
(where the upper bottom area is above s, the cross-sectional area is in the unit of s, and the lower bottom area is below s).
2, lime soil cushion volume calculation:
Earthwork volume is calculated by truncated cone formula: lime soil cushion volume =1/6× h× (above s+4× s+below s).
(where the upper bottom area is above s, the cross-sectional area is in the unit of s, and the lower bottom area is below s).
(3) Calculation of plain concrete volume: the foundation cushion and concrete foundation are divided according to the concrete thickness, and the cushion subtitle shall be executed when the concrete thickness is within 12cm; If the thickness exceeds 12cm, the basic subtitle is executed.
Cushion volume = cushion area × cushion thickness.
(4), cushion template calculation:
Cushion template = cushion perimeter × cushion height
3. Difficulties in the calculation of the engineering quantity of the whole house foundation cushion.
(1) When calculating the upper, middle and lower bottom areas of plain soil cushion and lime soil cushion, it is necessary to calculate the center line of "lines drawn from their respective sideline to the outside of the external wall", which is troublesome to calculate (the same site is leveled).
2. The cross-sectional area is not good.
(3) The overlapping place is not easy to handle (the same as leveling the site).
(4) If some slope coefficients are inconsistent, it is difficult to deal with them.
Mantang Foundation
1, number of mantang foundations
As shown in the figure, (1), the whole house foundation roll (2), the whole house foundation template (4) and the whole house foundation beam roll (5) are the whole house foundation beam templates.
2. Calculation method of engineering quantity of Mantang foundation
(1), volume of foundation
① One of the calculation methods: the bottom area of the maximum area of the whole foundation × the thickness of the whole foundation plate—calculate the volume of the triangular belt.
The bottom area of the largest area of Mantang foundation = building area+the area from the outer wall skin to Mantang perimeter.
The volume of the triangle = the circumference of the slope center line × the cross-sectional area of the triangle calculated repeatedly.
② The second calculation method: the top area of the whole house foundation × the thickness of the whole house foundation floor+the volume of trapezoidal belt.
Top surface area of the whole house foundation = building area+external wall skin to the whole house perimeter area-slope width area
Trapezoidal belt volume = slope centerline length × trapezoidal cross-sectional area
③ The third calculation method: the bottom area of the maximum area of the whole house foundation × the thickness of the bottom plate of the whole house foundation without edges+the volume of the pyramid platform.
(2), the basic template:
① One of the calculation methods: the base price of Tianjin construction project in 2004 is calculated according to the concrete volume of the whole house foundation.
② The second calculation method: in some areas, the conventional norm full-scale foundation formwork = full-scale foundation perimeter length × full-scale foundation perimeter height+full-scale foundation slope centerline perimeter × full-scale foundation slope inclination length.
(3) Full-house foundation beam
(1) volume of foundation beam.
Calculation method: Full-house foundation beam volume = clear beam length × clear beam height.
(2) Foundation beam formwork.
One of the calculation methods: the budget base price of Tianjin construction project in 2004 is calculated according to the volume of the whole house foundation beam concrete.
The second calculation method: in some areas, the general norm of the whole house foundation template = clear length of beam side above the whole foundation × clear height of beam side above the whole foundation+area of beam head.
3. Difficulties in the calculation of engineering quantity of Mantang foundation
(1) When calculating the foundation volume of the whole house, the length of the center line from the outer skin of the outer wall to some areas of the outer line of the whole house and some areas of slope width is more troublesome (the same as leveling the site).
[2] When calculating the net length of foundation beams, the problem of mutual deduction between intersecting beams must be considered.
(3) When calculating the formwork of full foundation beam, the mutual deduction between full foundation beam and intersecting beam must be considered.
strip foundation
1, number of strip foundation works
(1), number of plain soil cushion (2), number of lime soil cushion (3), number of concrete cushion (4), number of concrete cushion formwork (5), number of strip foundation: brick foundation; Concrete strip foundation (6), concrete strip foundation template (7), geosphere beam quantity (8), geosphere beam template (9), foundation wall quantity (10), foundation trench earthwork quantity (1 1), and retaining plate quantity (1/)
2. Calculation method of strip foundation
(1) quantity of plain soil cushion
The amount of plain soil of strip foundation of external wall = the length of the center line of plain soil of external wall × the cross-sectional area of plain soil.
Plain soil quantity of strip foundation of interior wall = net long line length of plain soil of interior wall × cross-sectional area of plain soil
(2) the number of lime-soil cushion
Lime soil quantity of strip foundation of external wall = length of center line of external wall lime soil × cross-sectional area of lime soil.
Quantity of lime soil for strip foundation of interior wall = net long line length of lime soil for interior wall × cross-sectional area of lime soil.
(3) the number of concrete cushion
Exterior wall strip foundation concrete cushion foundation = centerline length of exterior wall strip foundation concrete cushion x cross-sectional area of concrete cushion.
Interior wall strip foundation concrete cushion foundation = net long line length of interior wall strip foundation concrete cushion x cross-sectional area of concrete cushion.
(4) Engineering quantity of strip foundation
Number of external wall strip foundations = length of center line of external wall strip foundations × cross-sectional area of strip foundations
Engineering beam of interior wall strip foundation = net long line length of interior wall strip foundation × cross-sectional area of strip foundation.
Note: Calculation of clear long line ① Brick strip foundation is calculated according to the clear long line of internal wall.
(2) The concrete strip foundation is calculated according to the layered net long line.
In some areas (Tianjin), the calculation rules stipulate that the strip foundation takes the top of the geosphere beam as the dividing line, which makes it necessary to add the height below 0.000 when calculating the wall; Moreover, when there are ring beams with different elevations in a strip foundation, it is necessary to distinguish the elevation of the wall bottom when calculating the wall, which brings trouble to manual operation.
(5), concrete cushion template
① One of the calculation methods: in 2004, the template of base price concrete cushion of Tianjin construction project was calculated according to the volume of concrete cushion.
② The second calculation method: in some areas, the conventional norm concrete cushion template = horizontal clear length of concrete cushion × height of concrete cushion.
(6), concrete strip foundation template
① One of the calculation methods: Tianjin 2004 construction project budget base price concrete strip foundation template is calculated according to the volume of concrete strip foundation.
(2) Calculation method 2: Regular norm concrete strip foundation formwork in some areas = net length of side length of concrete strip foundation × height of concrete strip foundation.
(7), the number of geosphere beams
Engineering quantity of exterior wall geosphere beam = centerline length of exterior wall geosphere beam × sectional area of geosphere beam.
Engineering beam of interior wall geosphere beam = net long line length of interior wall geosphere beam × cross-sectional area of geosphere beam.
(8), geosphere beam template
① One of the calculation methods: Tianjin's 2004 construction project budget base price geosphere beam template is calculated according to geosphere beam and volume.
(2) Calculation method 2: In some areas, the conventional norm of geosphere beam template = the clear length of the side of geosphere beam × the height of geosphere beam.
(9) Engineering quantity of foundation wall
Engineering quantity of external wall foundation wall = centerline length of external wall foundation wall × sectional area of foundation wall.
Engineering beam of interior wall foundation wall = net long line length of interior wall foundation wall × cross-sectional area of foundation wall.
(10) earthwork volume of foundation trench
Earthwork volume of foundation trench = cross-sectional area of foundation trench × net length of foundation trench.
The outer wall geosyncline length is calculated according to the center line of the outer wall geosyncline bottom, the inner wall geosyncline length is calculated according to the net length of the inner wall geosyncline bottom, the geosyncline width is calculated according to the size shown in the figure plus the working face width, and the geosyncline depth is calculated according to the natural terrace to the geosyncline bottom. When sloping is needed, the earthwork volume of sloping should be merged into the total earthwork volume.
(1 1) Number of fixing plates
The engineering quantity of fender shall be calculated according to the vertical area of groove. After the baffle is supported, the slope is no longer calculated.
(12) The drilling quantity at the bottom of the trough is calculated according to the area of the trough bottom.
3. Difficulties in calculation of engineering quantity of strip foundation.
(1) It is difficult to calculate the net long line of entities in strip foundation of each layer.
⑵ When calculating the net long line of each layer entity of strip foundation, the intersection with external wall and internal wall should be considered at the same time. Usually, the horizontal part of the interior wall is calculated, and the vertical part is broken, so the entity net length of each layer of strip foundation is very troublesome.
(3) When calculating earthwork, the working face and slope should be considered, and it is more troublesome to calculate the deduction.
Anti-vibration foundation
1, number of independent foundations
(1) independent foundation cushion volume (2) independent foundation volume (3), independent foundation cushion foundation template (4), foundation template (5) earthwork volume of foundation pit (6) drilling and exploration quantities at the bottom of trough.
2. Manual calculation method of independent foundation
(1), volume of independent foundation cushion
Cushion volume = cushion area × cushion thickness
2, independent foundation cushion template
Cushion template = cushion perimeter × cushion height
(3), independent basic volume
Independent foundation volume = added volume per floor (using cuboid and frustum formula)
(4), independent foundation template
Independent foundation formwork = perimeter of each floor × height of each floor formwork
(5) Earth volume of foundation pit
The earthwork volume of foundation pit is calculated by multiplying the bottom area of foundation pit by the excavation depth. The area of the foundation pit bottom should be multiplied by the width of the foundation pit bottom. The length and width of the foundation pit bottom refers to the outer line of the concrete cushion plus the working face. If there is a drainage ditch, it should be counted as the outer line of the drainage ditch. The volume of drainage ditch should be included in the total earthwork. When sloping is needed, the earthwork volume of sloping should be merged into the total earthwork volume.
(6) Drilling quantities at the bottom of the trough
The drilling volume at the bottom of the trough is calculated according to the area of the trough bottom.
2. Difficulties in calculating quantities of independent foundations
① The volume of special-shaped independent foundation is difficult to calculate.
② When the independent foundation intersects with other foundations, it is difficult to calculate the deduction.
(3) When calculating earthwork, considering the working face and slope, it is troublesome to calculate the deduction.
Pile cap foundation
1, quantity of pile cap foundation
(1) Volume of cushion for pile cap foundation (2) Volume of cushion for pile cap foundation (3), formwork for cushion for pile cap foundation (4), formwork for pile cap foundation (5) Earthwork volume of foundation pit (6) Drilling and exploration quantities at the bottom of trench.
2. Manual calculation method of independent foundation
(1), the volume of cushion layer of pile cap foundation.
Cushion volume = cushion area × cushion thickness
[2] Formwork for cushion layer of pile cap foundation
Cushion template = cushion perimeter × cushion height
(3) Volume of pile cap foundation
Independent foundation volume = added volume per floor (using cuboid and frustum formula)
(4), pile cap foundation template
Independent foundation formwork = perimeter of each floor × height of each floor formwork
(5) Earth volume of foundation pit
The earthwork volume of foundation pit is calculated by multiplying the bottom area of foundation pit by the excavation depth. The area of the foundation pit bottom should be multiplied by the width of the foundation pit bottom. The length and width of the foundation pit bottom refers to the outer line of the concrete cushion plus the working face. If there is a drainage ditch, it should be counted as the outer line of the drainage ditch. The volume of drainage ditch should be included in the total earthwork. When sloping is needed, the earthwork volume of sloping should be merged into the total earthwork volume.
(6) Drilling quantities at the bottom of the trough
The drilling volume at the bottom of the trough is calculated according to the area of the trough bottom.
3. Difficulties in calculation of quantities of pile cap foundation.
(1) The foundation volume of special-shaped pile caps is not easy to calculate.
(2) When the pile cap foundation intersects with other foundations, the deduction is not easy to calculate.
(3) When calculating earthwork, considering the working face and slope, it is troublesome to calculate the deduction.
stake
1. Precast reinforced concrete piles shall be made according to the dimensions shown in the design, and the length shall be calculated according to the total length including the pile tip, without deducting the virtual volume of the pile tip.
2. The sprayed concrete is calculated by volume according to the size shown in the design.
3. The drilling and grouting quantity of reinforced concrete bored pile shall be calculated by multiplying the length from outdoor natural ground to pile bottom by the cross-sectional area of the pile.
4. The pouring concrete quantity of reinforced concrete bored pile shall be calculated by multiplying the sum of the designed pile length and the designed over-pouring length by the pile cross-sectional area.
5. The number of precast reinforced concrete piles should be calculated by multiplying the pile section by the volume of the whole pile length, without deducting the virtual volume of the pile tip. The volume of the hollow part of the concrete pipe pile should be deducted, and the concrete pipe pile does not include the materials used for hollow filling.
6. The quantity of pile delivery is calculated by volume, that is, the pile section is multiplied by the depth of pile delivery. The depth of pile delivery is the distance from the bottom of pile driver to the top of pile. (calculated by adding 50cm to the distance from the natural ground to the design pile top)
7. The volume of cement mixing pile shall be calculated by multiplying the design pile length by the design pile cross-sectional area.
8. Concrete pouring of underground continuous wall shall be calculated by volume according to the design graphic size.
Earthwork backfilling and earthmoving
1, soil (stone) backfill is calculated by volume according to the size shown in the design.
(1) Site backfill: the backfill area is multiplied by the average backfill thickness.
(2) Indoor backfill: the net area between load-bearing walls is multiplied by the backfill thickness.
(3) Backfilling of foundation: the volume of excavation minus the volume of foundation buried under the designed outdoor terrace (including foundation cushion and other structures).
(4) Trench backfilling: excavation volume minus cushion and trench volume with diameter greater than 200mm.
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