| 摘要 |
A floating roof (14) for use in a storage tank (10) for oil or other liquid petrochemical products has a frame (22) comprised of girders (32) having grooved slots in top and opposite side surfaces thereof along substantially the entire lengths of the girders (32). The slots (40) are capable of receiving threaded fasteners and flanges at any location along the length thereof, permitting cross girders (32) to be bolted to main girders (32) at virtually any location along the length of the main girder (32), without the need to drill holes. Adjustable legs for supporting the floating roof (14) on the bottom of the storage tank and which are internally sealed against vapor leakage, are mounted on the girders and are coupled to the junction of a main girder (32) and a cross girder by a sealed support housing assembly. |
