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Macomber joists (1950's)

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Anyone out there have an old Macomber Joist catalog around 1950’s?  I have some 60’s and 70’s era ones, but yesterday I ran into some Macomber joists that have a typical V section top, but the bottom chord is double rods, in lieu of another V section.  I’m thinking it might be first generation of their cold formed section b/c I know before that they used to make a joist purlin that had double rods for the top and bottom chords.  Haven’t seen one of these yet, but the joist tag does confirm they are Macomber’s.

 

Just trying to make my life easier and seeing if anyone has one anywhere…

 

Thanks in advance,

 

Andy

 

Andrew Heigley, PE