| 摘要 |
A plastic deck plank comprising a main load bearing plank member formed of low cost plastic material adapted to span between deck support members and a thin cover of higher cost plastic material supported by and sn ap locked to the main plank member. The plank member has a rigid cover supporting top wall free of gaps or slots therethrough and the plank member is secured to the deck support members by screws introduced into narrow screw receiving grooves in the top wall with the screws extending between the bottom of the top wall grooves and the deck support members to form metal reinforcing columns extending from the top wall to the deck support members. |
