| 摘要 |
<p>A vehicle inspection pit is constructed using a prefabricated liner (1) installed in a hole in the floor (31) at the required pit site. The hole is excavated so as to be of larger dimensions than the liner (1) and, after the liner is located in the hole with its top substantially level with the floor, the hole is back filled with wet and dry concrete mixes (WM, DM). The prefabricated liner (1) comprises a shell moulded from synthetic resin material and of generally rectangular shape in plan. Stiffening and reinforcing ledges (8, 9) are formed along the insides of the side and end walls (3-6) of the shell. At one end (6), these ledges are formed of sufficient width to serve as steps (12) whilst, along the side walls (3, 4) the ledges (8, 9) provide storage shelves for tools and other servicing items and support a sliding tray (14) and a sliding seat (15). The liner is also fitted with electrical services, bulkhead lights and fire extinguisher (22, 23, 24).</p> |
