| 摘要 |
A heavy duty drainage cover is provided to achieve superior resistance force against deformation or damage by uniformly distributing heavy load applied from an upper part to a reinforcing member installed at a supporting member of the drainage cover. A heavy duty drainage cover comprises a plurality of supporting members(140). A reinforcing member(10) is formed at a bottom surface of the supporting member(140) to uniformly distribute heavy load applied from an upper part. The reinforcing member(10) has a length shorter than that of the supporting member(140). The reinforcing member(10) includes a flat plate having a width corresponding to a width of both sides(142) of the supporting member(140). A plurality of sub-reinforcing members are formed in the reinforcing member(10) in the longitudinal direction. |
