No. 20 Havemeyer Culvert Truss

[MEL_0]

I am looking for some information on a No. 20 Havemeyer Culvert Truss.

This is shown on the as-built plans for a small 20' long single span bridge that was constructed in 1914. The bridge calls out No. 20 Havemeyer Trusses embedded in concrete. We are trying to load rate the bridge but need information on the Truss.

I found the attached data tables from 1934 in another thread (see pg 6), but this doesn't establish what the No. 20 Havemeyer Culvert Truss is.

Can anyone help me out?

Thanks,
Melissa

 

[bridgebuster]

SlideRuleEra's site has a lot of info on steel joist. See "Open Web Steel Joists (Gabriel, Havemeyer, Macomber, Truscon, Bates-X & Kalmantruss)" on his website (near the center of the page):

Link

The Building technology Heritage Library has 3 catalogs with Havemeyer products but not the joists.
Link

You could try the steel Joist Institute. They have published tables but they only go back to 1928; then again, you might get lusky.