5) Cast-in-situ cantilever eaves, the concrete fence is provided with an expansion joint every 12m, and the joint width is not less than 20mm, as shown in Figure 8.
5) The cast-in-place cantilever overhanging eaves board and concrete breast board shall be provided with an expansion joint every 12 m, and the joint width shall not be less than 20 mm. See Fig. 8 for details