Steel Roof Deck Designation 1

[ron9876]

I am reviewing a project that has a 7 1/2" deep steel roof deck. The thickness is indicated as 14-16. Is anyone familar with this designation? Thanks.

 

[Hokie93]

Canam Steel Corporation manufactures 7 1/2" deep steel roof deck. Their designations are H7.5, HA7.5, and LS7.5. I have not specified it recently, but Epic Metals used to make 7 1/2" deep steel roof deck.

 

[JAE]

Well first thought is 14 or 16 gage thickness - I can't see that the deck would vary in gage thickness...such as a different thickness on top vs. bottom or something like that.

 

[BAretired]

Could be a cellular deck 7.5" deep with 14 gauge over a flat sheet of 16 gauge, but I don't think it is a safe assumption without checking the actual deck.

BA

 

[ron9876]

BA it is a 7 1/2" cellular deck but I can't find info on the thickness. Obviously either 14 or 16 gauge. Called the supplier and they didn't know either.

 

[msquared48]

I think it is a QL deck made by Robertson, pan deck with a mix of 14 and 16 gage like BA said. Was used to provide electrical / mechanical chases in the floor. Seem to recall the nomenclature...

I don't have my catalog with me but will check on Monday at the office.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[BAretired]

ron9876, I am wondering if the 16 gauge refers to the liner panel and the 14 gauge refers to the 7.5" deep structural deck, but I don't know if that is the case, so it would be necessary to measure the materials on site.

BA

 

[msquared48]

Sorry, but nothing by that description in Roberston. They had a 3" pan with a 4.5" overlay of concrete for a 7.5" total thickness of the structural system, but no stopped at 16/16. No 7.5" deep pans and no 14/16.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[JAE]

ron9876 - see the attached. Is this what you are looking for. If so - hat tip to SlideRuleEra and his nifty website:

http://www.slideruleera.net

 

[BAretired]

Good find, JAE.

BA

 

[ron9876]

Thanks JAE. That is the type of deck. I believe it means that the bottom is 14 ga. and the upper section is 16 ga. Thanks again.

 

[hokie66]

ron,
Since the 14-16 is heavier than the 16-14, I think the pans in the 14-16 would be 14 gauge, and the bottom cover 16 gauge. Looks like you need the next page for the load tables.

 

[BAretired]

I agree with hokie. Another convincing reason is that the maximum allowable reactions are identical for the 14/14 and 14/16.

BA

 

[JAE]

I don't recall if there are load tables for this after the page I posted but you can access the whole document at slideruleera's site that I linked to.