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The number of roots can be calculated according to the area, the number of stools = the area of ​​the board / the horizontal spacing of the stools * the vertical spacing. If the ribs are designed in the form of bottom ribs and support negative ribs, and there are no temperature ribs, then the number of stools The hollow part must be deducted. The beam can play the role of a stool, so the number of stools should be buckled. There is no need to calculate the number of benches, stairwells, and slabs in the elevator shaft, stairs, and slabs.
2. How to calculate the length of horse stools?
Horse stool height = plate thickness - 2* protective layer - Σ (the sum of the reinforcing bar diameter of the upper plate ribs and the bottom plate of the plate).
The upper straight section is the plate spacing + 50mm (it can also be 80mm, put an upper reinforcement on the horse bench), the lower left straight section is the plate spacing + 50mm, the lower right straight section is 100, so that the horse stool Two reinforcements can be placed in the upper part, and the lower three points are smoothly supported on the lower reinforcement of the panel. Horseshoe ribs cannot contact the stencil to prevent back rust on the squat ribs.
3, horse bench ribs specifications:
When the board thickness is ≤140mm, the stress bearing ribs and distribution ribs of the board ≤10, when the bench rib diameter can be used ф8; when 140mm
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Calculation of Reinforced Stirrups
On the calculation of steel bar stirrups, how to calculate the number of bar stools? 4. Measure in the raft foundation The measure of reinforcement in a large raft foundation is not necessarily a steel stool reinforcement but often uses a steel bracket. The bracket must be calculated to determine its specifications and spacing in order to ensure the stability and bearing capacity of the bracket. In addition to calculating the upper rebar load, the construction load is considered when determining the load of the support. The distance between the support columns is generally 1500mm, and only one direction of long angle iron is needed on the column. This direction should be perpendicular to the upper steel bar, and the distance is generally 2000 meters. In addition to bracing welding. The design of the bracket should have a calculation type. After approval, the construction can only be carried out. It is not possible to rely solely on experience, and the bracket size and spacing are too small to cause waste. The excessively large bracket size and spacing may cause serious collapse of the foundation steel as a whole. Therefore, the bracket design cannot be taken lightly.