Commentary or examples for CMAA standards

[Yves]

The crane manufacturers association (CMAA) publish standards with design methods for cranes girders. But to me, the equations are quite confusing . Does somebody knows about some commentary or examples for these equations.

thank you

 

[svc430]

To my knowledge, CMAA has not published any design examples to accompany their specifications. In regard to CMAA Specification No. 70, I believe they were thinking about publishing such examples back in 1982 but never did. Somehow I did get a copy of a draft of these examples (which included the structural section on girder design), but I never saw that they were actually published.

Past issues of AISE Technical Report No. 6 (Association of Iron and Steel Engineers specifications for overhead cranes) did include a structural design example pertaining to the crane girders. This example (about 11 pages in length) was included in the September 1991 and June 1996 issues of that standard. There is a new issue dated 2000 that I haven't seen yet, so I don't know if it contains the same example.

AISE does have a web site at

http://www.aise.org.

I believe the methods used in the AISE example will follow pretty close with CMAA, although the loading combinations will differ somewhat. The AISE example is for a box girder section supporting a top running trolley.

 

[ehcet]

What are you trying to design.
I used this specs for decades.

Ernie