Radiant heat in concrete on composite deck
Radiant heat in concrete on composite deck
(OP)
Does anyone know of design guidance for composite slab and composite beam design to incorporate radiant heat tubing? I'm having some trouble finding any design examples/tech notes online.
We are designing a floor system with concrete slab on composite metal deck supported by steel beams. The beams will also utilize shear studs to engage composite action with the slab. The architect/MEP is considering adding radiant heat tubing to the slab and I'm trying to figure out how to take it into account in the design.
Could we just determine the compression block depth "a" in the slab and make sure the tubing isn't within that depth? Or are there additional considerations that need to be made? Adding a concrete topping to set the tubing in could be an option, but would add considerable concrete and beam weight.
Any guidance is greatly appreciated.
We are designing a floor system with concrete slab on composite metal deck supported by steel beams. The beams will also utilize shear studs to engage composite action with the slab. The architect/MEP is considering adding radiant heat tubing to the slab and I'm trying to figure out how to take it into account in the design.
Could we just determine the compression block depth "a" in the slab and make sure the tubing isn't within that depth? Or are there additional considerations that need to be made? Adding a concrete topping to set the tubing in could be an option, but would add considerable concrete and beam weight.
Any guidance is greatly appreciated.






RE: Radiant heat in concrete on composite deck
It is unlikely that radiant heat tubing will affect the compression block but you could do a calculation to reassure yourself.
RE: Radiant heat in concrete on composite deck
RE: Radiant heat in concrete on composite deck
I vaguely remember a previous thread on this somewhat recently. I'll see what I can dig up. Depending on the size and number of lines required there are reductions that need to be taken into account.
RE: Radiant heat in concrete on composite deck
RE: Radiant heat in concrete on composite deck
- max conduit size = min (25 mm, 1/3 cover)
- no crossovers. have fun enforcing that.
- 18" min spacing.
- min 25 mm cover.
My fuzzy recollection of that other thread is that the article specified a min spacing from studs. Six inches maybe? In specifications, I've seen prohibitions against both tying conduit to studs and placing conduit in the deck flutes.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Radiant heat in concrete on composite deck
RE: Radiant heat in concrete on composite deck
However that was for the beams only, I'm not sure how it would work for the deck composite action, I guess if you kept it out of the flutes then I can't see a huge issue.
RE: Radiant heat in concrete on composite deck
Is this the thread you are recalling?
RE: Radiant heat in concrete on composite deck
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Radiant heat in concrete on composite deck
RE: Radiant heat in concrete on composite deck
RE: Radiant heat in concrete on composite deck
http://www.eng-tips.com/viewthread.cfm?qid=378722
RE: Radiant heat in concrete on composite deck
http://www.newsteelconstruction.com/wp/ad-350-heat...
Thanks again for all the helpful responses.