Metal Roof Deck
Metal Roof Deck
(OP)
I'm involved in a re-roofing project and need to check roof structure capacities for increase in gravity weight (due to insulation) and diaphragm shear, per IBC. For two of the handful of roofs I inspected, of which record drawings are not available, I was able to field measure the general deck geometry - see attached sketch. Does anyone have information/knowledge or published load tables/product data for the indicated deck types?
The first deck has 1.5" deep x 1.25" wide triangular ribs spaced 6" on center. The individual sheet width is about 18" wide and sheets nest into each other.
The second deck is a long-span deck, with 4.5" deep x 3" wide inverted 'T' ribs spaced every 12" on center. The deck spans 16' between beams/girders. Ceiling tiles are laid between the ribs. There is also an embossed 'x' pattern in the deck sheet between ribs.
Thanks!
Jeff
The first deck has 1.5" deep x 1.25" wide triangular ribs spaced 6" on center. The individual sheet width is about 18" wide and sheets nest into each other.
The second deck is a long-span deck, with 4.5" deep x 3" wide inverted 'T' ribs spaced every 12" on center. The deck spans 16' between beams/girders. Ceiling tiles are laid between the ribs. There is also an embossed 'x' pattern in the deck sheet between ribs.
Thanks!
Jeff






RE: Metal Roof Deck
http://www.epicmetals.com/#!products/epicore
I don't know on deck type B.
RE: Metal Roof Deck
I should mention these buildings were constructed sometime between the 50's - 70's (best estimate on LIMITED record drawings)...
RE: Metal Roof Deck
Vertical load is taken by joist spacing, shear and uplift by fasteners.
RE: Metal Roof Deck
RE: Metal Roof Deck
RE: Metal Roof Deck
I have seen multiple references/specifications for Robertson Keystone deck without ever finding any information too! I have been wanting to add something on this deck to my collection for years, just can't find it...oh well, the search continues!
RE: Metal Roof Deck
http://www.structuremag.org/article.aspx?articleID...
RE: Metal Roof Deck
RE: Metal Roof Deck
RE: Metal Roof Deck
thread507-346713: HH Robertson Deck
RE: Metal Roof Deck
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