What Should I Consider When Choosing Rebar?

Reinforcement refers to steel for reinforced concrete and prestressed concrete, and its cross section is round, sometimes square with rounded corners. Including light round bars, ribbed bars, twisted bars. The arrangement of the reinforcing steel has a great influence on the stress of the structure.

Reinforcing steel is mostly used in concrete structures to play the role of prestressing. The difference in the arrangement of the reinforcing steel has a great influence on the force. Therefore, choosing a reasonable arrangement is one of the basic conditions to ensure the stability of the building structure.

1.

Figure 11

The ring beam should be continuously installed on the same horizontal surface and form a closed shape. The ring beam should be at the same level as the prefabricated panel or close to the bottom of the plate (Figure 11); when the ring beam is cut by the door and window opening, the same section should be added above the opening Additional ring beams (Figure 12). The overlap length of the additional ring beam and the ring beam shall not be less than 1m, and shall not be less than twice the vertical distance H ₁ between its centerline and the centerline of the ring beam.

Figure 12

The width of the reinforced concrete ring beam should be the same as the wall thickness. When the wall thickness h240mm. Its width should not be less than 2h / 3; the height of the ring beam should not be less than 120mm; the longitudinal reinforcement should not be less than 410; the overlap length of the lashing joint should be considered according to the tensile reinforcement, and the hoop spacing should not be greater than 300mm. When the ring beam doubles as a bridge, the reinforcement of the bridge should be added separately according to the calculated amount.

The ring beams at the junction of vertical and horizontal walls should be reliably connected. The steel bars at different locations are connected as shown in Figure 13. For rigid-elastic and elastic scheme houses, the ring beams should be reliably connected with the roof trusses and girder.

Figure 13 ^[4]