Steel binding is an important part of renovating and construction work as it binds concrete to the correct calculated strength. fully paid
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1 Foundation structure work It is a steel tying in a square takraw to be a structure to support the weight of the building column to the needle that has been placed. By this step, the deformed bars of the calculated size are tied to the steel piles and spread evenly around the columns and erected according to the thickness of the calculated foundation. In this step, the cement ball must be placed between the lean that is poured and the steel base that is tied. so that the structural mortar can absorb all the steel bound which obtains the strength as calculated
2 Work of ground beams and upper beams It is a longitudinal tying of the deformed bar by tying it to the steel of the column and extending it in a long way by the spacing of the steel casing (@=spacing) according to the engineer’s calculation. Most of which are @10-15cm. depending on the height of the building
3 Steel column work is to tie the deformed bars and spread out the base side to bind them together with the foundation in the case of the ground floor and to connect straight for the 2nd floor and subsequent floors. Most of the poles have sizes from 20-50cm. It depends on the height of the building and the engineer calculates, but for the house, most of them are 25-30cm. Steel casing @20 uses steel DB16mm.
4 Steel work, beams, lintels and columns Most of them use 9mm round steel to tie the width 8x5cm. The spacing uses 6mm steel. @10cm. Then pour the concrete structure to be tough for the strong wall.
Rebar grafting is the extension of round steel bars or deformed bars used as reinforcement in reinforced concrete structures such as columns, beams, floors, cast-in-places, stairs, etc. by using steel wire bindings. which the distance of the overlap of the two steel lines For deformed bars, it shall not be less than 40 times the diameter of the steel. The round rebar must not be less than 50 times the diameter of the steel. For example, if a 16 mm diameter deformed bar is used as a standing bar, the span distance is 16 mm x 40 = 640 mm (64 cm). It is forbidden to be less than this. and if you have to connect steel with unequal diameters then always stick to the size of the steel that is bigger For steel with a diameter greater than 25 mm. Will not be used to graft steel Due to the large size of steel, there is a chance that the position is easily misaligned. Therefore, steel sleeves or joints are preferred as connectors.
The position of the steel bar will be calculated and designed by the engineer. By avoiding the point where heavy loads are required in the overall load transfer system of a structure, for example, beam structures usually have two sets of reinforcing bars: upper reinforcement and lower reinforcement. Reinforcing steel on the top shall not overlap the steel at the joint between the beam and the column head. The lower reinforcing steel should not be placed in the middle of the beam. Because both positions are the points that need the most tensile strength in the beam structure.
It can be seen that tying steel in construction or renovation work is equally important. because it is directly related to the strength of the building because it is a frame that is a tendon to the building if not done properly There will be many problems that must be done by professionals only.