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Anonymous users2024-01-23After 30 days, this is the most basic requirement, so don't be blind.
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Anonymous users2024-01-22Generally, the cantilevered size of balconies and canopies is in between. If it is longer, either add a free-standing column underneath or use a large size cantilever beam to bear the load.
According to the requirements of the Code for Construction and Acceptance of Concrete Structure Engineering (GB50204-92), the removal of the formwork should meet the following conditions: the concrete strength ensures that its surface and edges and corners are not damaged by the removal of the formwork machine before it can be removed, under normal circumstances, the column concrete can be dismantled at least 1 day after pouring, the main load-bearing components, according to the design requirements, should be dismantled when the concrete strength reaches 70% of the design strength grade, and the concrete strength of the cantilever member reaches 100% before the formwork can be removed.
Reinforced concrete should fully reach 100% strength before the mold can be removed, especially the cantilever part, if the upper balcony, canopy formwork must be on the balcony of this floor, before the completion of the upper floor, this layer can not be removed!
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Anonymous users2024-01-21The strength reaches 100% before it can be disassembled.
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Anonymous users2024-01-20Moderate weather for a week!
It has nothing to do with the length, it is the tendon in the width direction! One end extends into the inner floor slab of the beam 500 anchorage, the anchor end is 90 degrees hooked, the balcony outside 180 degrees hook, 16 threaded steel bars 150 are evenly distributed at intervals, the distribution of steel bars in the length direction is not subject to any force, 12 reinforcing bars are evenly distributed at intervals, and the reinforcing bars are arranged near the upper surface of the balcony slab, the thickness of the protective layer is 25, and the rebar grade is HRB335.
Ratio of external overhang to pressed wall:
If the beam is located on the roof, then: 1:2 >>>More
The beam size is unknown, the load is unknown. In general, if the beam of the residential building is 400 high, the gluten of the beam is matched with 2 16, the gluten of the balcony slab extends from the floor surface, and the rest of the steel bars are matched according to the structure.
In general, the length of the cantilever plate is not more than meters, which is okay. The reinforcement should be determined according to the load. Generally, the thickness of the plate should be 120mm, the concrete should be C25, and the gluten should be made of three-level steel bars with a diameter of 12mm, and the spacing should be 150mm.
Summary. Generally, take the span of 1 6 1 8, when the cantilever length is greater than 1500 (unless otherwise specified in the construction unit mm), need to add bent reinforcement. The ratio of the length of the embedded masonry of the pick beam to the length of the pick should be greater than that, and when there is no masonry on the pick beam, the ratio should be greater than 2. >>>More