Question 2: How to calculate the number of each steel bar? As long as we know the weight of steel bars per meter, we can know the weight of all steel bars according to 0.006 17 * d 2; Steel bar weight = weight * length * number of steel bars per meter; The beam-slab ladder is calculated separately, and the number of roots can be known by dividing the length by the spacing, and the length of a single root can be known by adding the anchoring length according to the axis.
Question 3: How to calculate the number of steel bars 3. 15 is calculated as 4.
When the net size of plane members is divided by the spacing size plus 1, the vertical distribution of reinforcement in the wall is reduced by 1.
Question 4: How to calculate the steel bar content per square meter? Calculate the total steel consumption of a standard floor, and then divide it by the building area of this floor, that is,
Steel bar content per square meter
Question 5: How to calculate the steel bar weight of a square in a building? According to the estimated steel bar content per square meter of construction area, divide the total weight of steel bars in the project contract budget by the estimated construction area;
The settlement value of construction project according to the content of steel bars per square meter of construction area is the total weight of steel bars settled in the project contract divided by the settlement construction area.
The settlement value of the average steel bar content per square meter of construction engineering statistics of the same structural type and the same or similar floors is the reference steel bar content per square meter.
Question 6: How to calculate the number of steel bars? Firstly, the reinforcement algorithm uses a flatter method to calculate the reinforcement amount.
Net amount of reinforcement =∑Li×gi(kg)
General formula for calculating reinforcement length: (calculated according to broken line length)
Length of reinforcement = length of component drawing-thickness of protective layer at both ends+added value of hook length+added value of bending length+increased length of lap joint+increased length of anchorage.
A, steel bar anchorage, lap is related to the category of steel bar and concrete strength grade.
B. Steel bar hook: Grade I steel bar shall be provided with hook 180, and the added value of each hook shall be 6.25d Grade II steel bar with hook of 90 shall be calculated according to the bending length.
C. The added value of steel bar bending is related to the bending angle: generally, the bending angle is 45; When the beam is high, 60 is desirable; When the beam is low, you can take 30.
There is a big difference in market prices now. I suggest asking more questions. There are companies that calculate engineering quantities and construction engineering budget companies. You can also go to the platform to entrust, and the fees vary. (The following is the collection of engineering cost, not necessarily the standard of steel bar cost, for reference only)
2. The charging standard of the cost budget (reference) is 1, and part of the charging is 0.2-0.5% of the cost budget (assuming the project cost is 1 10,000 and the cost is 2000-5000);
2. Professional companies charge, and the factory charge calculated by Xiao Ant is 0. 1%-0.2% of the budget (assuming the project cost is 1 10,000, and the calculation cost of engineering quantity is1000-2000);
3. Some of them are suggested to be charged according to the cost budget quota of each province and city.
Third, the charging standard of engineering quantity calculation (reference) 1, the fees charged by general consulting companies are calculated according to the installation budget cost, and it is considered that calculating engineering quantity is one of the most tiring and troublesome tasks in the budget.
2. Some companies charge 0.05%-0. 1% of the budget.
Four. Suggestion 1. It is cost-effective to choose a quantity company if only the engineering quantity is counted.
2. If you want the cost and save money, you can now find a professional quantity company to calculate the engineering quantity, and then let people set the price, so the price is much lower (the second point mentioned above is the most cost-effective).
I hope my answer can help you, please adopt it.
Question 7: How to calculate the weight of steel bars? The theoretical weight of reinforcement is calculated by multiplying the square (mm) of reinforcement diameter by 0.006 17.
0.6 17 is the reinforcement weight per meter of circle 10. The weight of steel bars is proportional to the square of the diameter (radius).
G=0.6 17*D*D/ 100
Weight per meter (kg) = rebar diameter (mm)× rebar diameter (mm)×0.006 17.
In fact, it is very simple to remember the weight of steel bars commonly used in construction projects: φ 6 = 0.222kgφ 6.5 = 0.26kgφ 8 = 0.395kg φ10 = 0.617 kgφ12 = 0.888kgφ14 =/kloc. 438+08 = 2.0kgφ24 = 2.47kgφ22 = 2.98kgφ25 = 3.85kgφ28 = 4.837kg ............
Steel bars below φ 12 (including 12) and φ 28 (including 28) generally take three decimal places, and steel bars from φ 14 to φ 25 generally take two decimal places.
φ 6 = 0.222kg.
φ8 = 0.395kg
φ 10 = 0.6 17kg
φ12 = 0.888kg.
φ 14 = 1.2 1kg
φ 16 = 1.58kgφ 18 = 2kg
φ 20 = 2.47kg.
22 = 3Kg
φ 25 = 3.86kg.
I have an empirical formula. Just calculate your own table. You can also buy a book with a watch, which is also very convenient to use.
A simple formula for calculating the theoretical weight of steel
Material Name Theoretical Weight W (kg/m)
Flat steel, steel plate and steel strip w = 0.00785× width× thickness
Square steel w = 0.00785× side length 2
Round steel, steel wire and steel wire w = 0.006 17× diameter 2.
Steel pipe w = 0.02466× wall thickness (outside diameter-wall thickness)
Equiangular W = 0.00785× side thickness (2 side width-side thickness)
Unequal angle steel w = 0.00785× side thickness (long side width+short side width-side thickness)
I-beam w = 0.00785× waist thickness [height +f (leg width-waist thickness)]
Channel steel w = 0.00785× waist thickness [height +e (leg width-waist thickness)]
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The exact calculation formulas of 1, angle steel, I-beam and channel steel are very complicated, so the approximate values are calculated by table simplification.
2.f value: 3.34 for general model and A model, 2.65 for B model and 2.26 for C model. ..
3.e value: 3.26 for general model and A model, 2.44 for B model and 2.24 for C model. ..
4. All length units are millimeters.
Question 8: How to calculate the number of foundation reinforcement How to calculate the number of foundation reinforcement?
We set the horizontal direction of the independent foundation as X direction and the vertical direction as Y direction.
For example, the length in the X direction is 2400mm, and the room is reinforced [mail protection]); ; The length in the Y direction is 2600mm, and [mail protection] is between steel bars). Concrete cover 40mm, calculate the number of steel bars in each direction? (More than 2500, 0.9 times, please deduct the reinforcement shortening. )
Solution: The length in X direction is: 2400 mm-40× 2 = 2320 mm; The length in the y direction is: 2600 mm-40× 2 = 2520 mm
The number of roots with a length of 2320mm in the X direction is: 2520 mm ÷ 200+ 1 = 14 (roots).
The number of roots with a length of 2520mm in the Y direction is 2320 mm ÷150+1=17 (roots). Note: When the length of the independent foundation slab is ≥2500mm, the reinforcement length of the slab can be 0.9 times that of the slab in the corresponding direction, except for external reinforcement. 15 (root) in 17 (root) can be taken as 2088 mm
A:
The number of roots with a length of 2320mm in the X direction is: 14 (roots).
The number of roots with a length of 2520mm in the Y direction is 17 (roots).
Question 9: Given the amount of concrete, how to calculate the amount of reinforcement? Reinforced concrete reinforcement and concrete are calculated separately. From the structural point of view, as long as you look at the structural drawing, there will be a specific number of reinforcement; From the perspective of budget, it is also the calculation of concrete volume without subtracting the content of steel bars, and the steel bars are calculated one by one. Therefore, it is very time-consuming and meticulous to calculate the number of steel bars in "reconciliation", even involving the connection form of steel bars. From this point of view, the number of steel bars and concrete has no such relationship as mathematical formula.
However, because the owner or other identity needs to estimate the investment or cost of the project, we can generally find a relationship, that is, the "steel content" of different types of buildings has an approximate proportion. From this perspective, there is a budgetary relationship between steel bars and concrete.
In addition, we also regard the specific gravity of concrete as 2.4 and that of reinforced concrete as 2.5, which can also give a very general understanding of the steel content of reinforced concrete as a whole.
In short, accurate calculation must be calculated and summarized one by one.