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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0884196 (1978-03-07) |
우선권정보 | GB-0012228 (1977-03-23) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 2 인용 특허 : 1 |
A roof is assembled conventionally from cladding supported by purlins or girders extending between end walls of the building. The cladding can be metal. By providing a single structural spanning member, the requirement for girders or purlins is avoided and construction work is simplified. The useful
A structural spanning member for use as a beam or cross member which is capable of linearly extending as an unsupported span between end supports of a building structure, said member comprising a generally planar elongated central web section which includes a plurality of spaced apart indentations f
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