Inventors:
Dean K. McKibbin - Warren PA
Richard E. Hills - Coraopolis PA
Joel Blackman - Pittsburgh PA
Franklin A. Kuhs - Pittsburgh PA
Assignee:
Pittsburgh-Des Moines Steel Company - Pittsburgh PA
International Classification:
B65D 8718
Abstract:
A floating roof drainage system which includes a plurality of pipes. The pipes are weldably connected to each other to form a completely welded system, and, in one embodiment, are completely suspended from the bottom of the floating roof. In another embodiment, the drainage system is supported on the rimplate of the floating roof just beneath a seal. The pipes in one embodiment are prestressed, and the pipes in all embodiments are sequentially moved as the floating roof moves.