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armco steel joists
armco steel joists
does anyone have load tables or product data for armco open steel joists? armco (now called ak steel) fabricated open web steel joists in the 1950's and 1960's using cold-formed steel top and bottom chords with rods for web members (pratt-type truss). i have done a google search and contacted sji with no firm results... so far.
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