Beijing Zhongchengtai Construction Engineering Co., Ltd.

Beijing Zhongchengtai
Construction technology of cast-in-place loft
. < The reinforcement method should be used to fix the corners, and do not damage the main beam easily.
. < The steel bars must be made of national standard ribbed steel and bundled into a mesh in two or four layers.
. < , select qualified cement products and river sand (cement< r< label< < river sand, mountain rocks, the ratio is < r<:< r<:< r3<, stir evenly, and vibrate with a special vibrator. Use planting ribs).
. < , the post-maintenance of the floor slab should be sufficient.
. < For safety reasons, if necessary, it is advisable to use channel steel supports at the corners just in case. These channels can be shielded by design.
. < When the span is too large, be sure to ask a professional structural engineer to perform calculations to avoid danger caused by excessive weight. Girder needs to be added if necessary.
. < This is a highly professional project, so you must find a professional construction team.
. < The reinforcement should be reasonable. As long as the design of concrete floor reinforcement is reasonable, it can serve as an early warning even when major changes occur. We divide floor slab reinforcement into appropriate reinforcement, less reinforcement and super reinforcement. Suitable reinforcement type < r:< means that the designed number of steel bars is within a reasonable range < r.< Such a floor < < Once the floor is about to fail < < there will be signs < r:< that cracks will appear. Under-reinforcement means that there are too few steel bars placed < < In this way, the load-bearing capacity of the floor is very poor; over-reinforcement means that the steel bars are placed too much and exceed the standard range < < In this case, problems will arise when the floor cannot reflect the damage in time < r.< So It is not that the more steel bars, the better< r
. < The time for removing the formwork of the cast-in-place floor slab must be grasped well. The strength of concrete rises fastest < r3< days before pouring. It can reach < r< or above from < r<, it can reach about < r< in < r< days, it can reach < r< or above in < r< days, and it will still remain after that. Will increase at a very slow rate.