Civil steel bars, concrete, bricks
Equisquare estimation constants are shared
The amount of concrete used in a general frame structure can be calculated as "building area*0".22", that is, the converted thickness of a standard layer is about 22cm;
The steel content of the frame structure is temporarily calculated according to the steel content of 60kg per m2 (the factors affecting the steel content of each building are not considered for the time being).
To sum the above data: the steel content per cubic concrete = 1 022*60=273kg, 12 walls need 64 standard bricks for one square. 18 walls need 96 standard bricks for one square, and 24 walls need 128 standard bricks for one square. A square of 37 walls needs to be 192 standard bricks, and a square of 49 walls needs to be 256 standard bricks.
Calculation formula:
Unit cubic meter 240 wall tile dosage 1 (024*0.12*0.6)
Unit cubic meter 370 wall tile dosage 1 (037*0.12*0.6)
A hollow 24 wall requires more than 80 standard bricks per square.
The amount of concrete and steel used in ordinary residential buildings:
Multi-storey masonry house: steel bar 30kg m2 concrete 03—0.33m3/m2
Multi-layer frame reinforcement 38-42kg m2 concrete 033—0.35m3/m2
Small high-rise 11-12 layers of steel bars 50-52kg m2 concrete 035m3/m2
High-rise 17-18 layers of steel bars 54-60kg m2 concrete 036m3/m2
High-rise 30 layers h = 94 meters of steel bars 65-75kg m2 concrete 042—0.47m3/m2
High-rise serviced apartment, 28 floors, h=90 meters, steel bars, 65-70kg, m2, concrete, 038—0.42m3/m2
The amount of concrete and steel used in villas is between multi-storey masonry houses and high-rise 11-12 floors, and the above data are designed according to the rules of the seismic 7-degree zone.
Economic indicators of the construction budget of ordinary multi-storey residential buildings
1. The area of outdoor doors and windows (excluding unit doors and anti-theft doors) accounts for 0 percent of the construction area20—0.24
2. The template area accounts for 2 of the construction area2 or so.
3. The outdoor plastering area accounts for 0 percent of the construction area4 or so.
4. The indoor plastering area accounts for 3 of the construction area8。
Construction efficacy
1. A plasterer plasters 35 square meters a day.
2. A bricklayer lays 1000-1800 red bricks a day.
3. A bricklayer lays 800-1000 hollow bricks a day.
4. Ceramic tile 15 square meters.
5. The first time to scrape the white is 300 square meters a day, the second time is 180 square meters a day, and the third time is a 90 square meter day.
Basic data
1. The weight of concrete is 2500kg m3
2. The weight of the steel bar per linear meter is 000617*d*d3, dry sand weight 1500kg m
3. The weight of green sand is 1700kg m3
4. The weight of the stone is 2200kg m3
5. About 525 red bricks per cubic meter (wall thickness).
6. There are about 175 hollow bricks per cubic meter.
7. The clean sand on the sieve side needs 13 square ordinary sand.
Estimation extensions
1. General multi-storey masonry house: steel bar 25-30kg m
2, of which the affordable housing is 16--18kg m2.
2. For general multi-storey masonry houses, the outdoor plastering area accounts for 0 percent of the construction area5--0.7。
3. General multi-storey masonry houses, the template area accounts for 1 of the construction area3--2.2. According to the number of cast-in-place plates, the column density varies greatly.
4. A bricklayer builds 240 brick walls 1000-1800 pieces a day, 370 or 500 walls 2000-3000 pieces.
5. The weight of reinforced concrete is 2200kg m3, and the weight of plain concrete is 2100kg m3.
6. The weight of engineering stones is 1800kg m3.
617 is the weight per meter of the circle 10 rebars, and the weight of the rebar is proportional to the square of the diameter (radius). g=0.617*d*d 100 weight per meter (kg) diameter of steel bar (mm) diameter of steel bar (mm) 000617
In fact, it is also very simple to remember the weight of steel bars commonly used in construction projects.
Steel bars below 12 (including 12) and 28 (including 28) are generally taken to three decimal places, and steel bars from 14 to 25 are generally taken to two decimal places.
6=0.222kg φ8=0.395kgφ10=0.617kg φ12=0.888kg φ14=1.21kg φ16=1.58kg φ18=2.00kg φ20=2.47kg φ22=3.00kgφ25=3.86kg φ28=4.837kg
I have experience in calculating formulas, you can calculate a ** yourself. You can also buy a book with **, which is also very convenient to use.
Simplified formula for calculating the theoretical weight of steel
Material Name: Theoretical weight w(kg m).
Flat bars, steel plates, steel strips W 000785 Broad.
Square steel w 000785 Side length 2
Round bars, wire rods, steel wires w 000617 Diameter 2
Steel pipe w 002466 Wall thickness (outer diameter - wall thickness)
Equilateral angles w 000785 Edge thickness (2 side width - side thickness)
Unequal angles w 000785 Edge thickness (long side width + short side width - side thickness).
I-beam w 000785 Waist thickness [height + f (leg width - waist thickness)]
Channel w 000785 Waist thickness [height + e (leg width - waist thickness)]
The above is the constant for the estimation of the quantity of steel bars, concrete, bricks and other square meters in civil engineering, for more information, please pay attention to the account.