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Re: 1951 Steel Roof Trusses

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If your trusses are open web steel joists, then I have an old CECO joist book
which has load tables for a 248 and 166  joist designation. CECO short span
joists had double angle top chords with rod bottom chords.  CECO long span
joists had topand bottom chords
that looked like Cees turned sideways.

Can you provide a description of these trusses?

Jeff Williams wrote:

> Hello everyone,
> This may have been asked before, but I have the following dilemma.  We are
> modernizing several buildings of a 1951 school in the San Francisco area
> and the roof members are constructed with steel trusses.  I have contacted
> several manufactures about the truss properties, but I'm have no luck.
>  Therefore, if someone can direct me to a piece of literature or if someone
> might have the properties associated with the followings truss
> designations, it would be greatly appreciated.
> The truss designations on the drawings are as follows:
> #248
> #116-216
> #166-219
> #165-235
> Jeff Williams, S.E.
> PARADIGM Structural Engineers