non composite deck design

[SteveMort]

Can anyone give me a design example for a non composite metal floor deck with a concrete slab supporting 100psf live load with a maximum span of 7'-0"? I am trying to understand the Vulcraft tables for selecting the slab and the deck but I can't tell if the "allowable uniform load" for the deck includes live loads or not.

 

[Lion06]

Do you mean non-composite with the steel beams or that the deck doesn't act composite with the slab.
If it is the former, but the deck is composite with the slab then...........
The allowable uniform load assumes ALL superimposed loads are live. You can get more out of the slab by using the 1.6 factor on the allowable, then taking out the 1.2DL and backing out what you are left with for LL at a factor of 1.6.

If it is the latter.......
The load table likely gives the TOTAL load that the deck can handle (including concrete weight and LL). At least that's the way my USD manual is.

 

[SteelPE]

The USD design manual is much better than the Vulcraft manual. It has both sample caclulations and charts. You can look at it here.

http://www.njb-united.com/usd/deckcat.htm

 

[civilperson]

Page 54 of Vulcraft "Steel Floor and Roof Deck" has uniform load limit of 121 psf for 10 foot span using 16 gage 3.0 N deck. Using the section properties listed above the table gives 175 psf load with 84 inch simple span causing 14.4 KSI stress in the 16 gage form, (fine for 33 ksi yield steel).