Replies

1. 
   razzman | Jan 25, 2006 08:57pm | #1

   Greetings b, This post, in response to your question, will bump the thread through the 'recent discussion' listing again. Perhaps it will catch someones attention that can help you with advice. Cheers

   'Nemo me impune lacesset'
   No one will provoke me with impunity

2. 
   CapnMac | Jan 25, 2006 10:37pm | #2

   getting ready to do a slab with radiant pek tube , what reinforcing would go  good with

   the tube 3'8 rebar or 6 by mesh plastic clips or tie wire?

   (Thanks to Razz for popping this one abck "up" again.)

   "We" are likely going to need a tad bit more info to answer your question.

   Like, is this a structual floor slab, or one over some other floor?  What has the HVAC designer (of the RFH system) recommended?  Does your local AHJ (Authority Having Jurisdiction--the Building Dept., or such similar) require any minimums?

   The little things make a difference.  Sure, #3 (3/8" nominal diameter) bar at 12" O.C.E.W. will suffice for many floor slabs (or driveways, or what not).  That might not meet a California seismic code, though.   "The devil is in the details" is particularly true of concrete detailing.  How one ties the slab concrete to beams, footings, etc. become a force defining the reinforment, too.

    

   (Sadly, we are not allowed to edit Thread titles once posted, otherwise we could have you change "pek" to "pex," the more common name for the tubing used in radiant heat.)

   Occupational hazard of my occupation not being around (sorry Bubba)
3. 
   Piffin | Jan 26, 2006 12:58am | #3

   Thank rez for giving your pex a peck to the top!

   For non structural slabs here we use 6" wire mesh. It forms a good grid to hold the pex in place. Most heating engineers spec the pex to run at 18" oc for greatest efficiency and least heat damage to the crete. The same engineers spec the size of the pex and how long each run should be. You have those specs, right?

    

    

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4. 
   Bildt | Jan 27, 2006 12:54am | #4

   6" wire mesh and plastic ties to secure them in place is what was used in my basement.