What is the internal support of shear wall?

In general, the support in the above-ground shear wall template is a hard plastic pipe, and the template tie rod bolt can be worn in the plastic pipe. After the concrete of shear wall is hardened, the extracted screw can be reused. After the formwork is removed, the plastic pipe in the shear wall stays in the structure, with 2 cm chiseled at both ends and filled with mortar in several times.

Water stop screw should be used for shear wall of underground part.

Supplement: There are pictures of this practice now, which are made of concrete with the same label as the shear wall. When the shear wall is thick, there are steel bars in it. However, the accuracy of this component is not high, and the internal support is easily shaken off by the vibrator when pouring concrete. The advantage is that the cost is reduced.