作者: Norman S. Kalish , Emil P. Trimarco
DOI:
关键词: Surface (mathematics) 、 Lamination 、 Engineering 、 Structural engineering 、 Flange 、 Roof
摘要: A support structure for the stationary, level mounting of heavy objects such as air conditioner condensers and like. The has a substantially flat top supported by sidewalls with an outwardly extending flange at bottom edges sidewalls. height are fabricated to compensate any slope in supporting surface upon which is be rested so that maintained horizontal. parallel when object on weight distributed over area flange. form closed have weather-resistant lamination continuous If roof mounted may sealed moisture debris do not contact underlying structure. Very little deterioration will occur if reroofing subsequently becomes necessary, materials can applied directly need remove or thereby eliminated.