mildsteel reinforcement for temp and shrinkage in pt slab
mildsteel reinforcement for temp and shrinkage in pt slab
(OP)
what is the ideal location for mild steel reinforcement for temperature and shrinkage in a one way posttension slabs.
Is it better in the middle of the slab or at the top in alignment the top rebar.
Is it better in the middle of the slab or at the top in alignment the top rebar.






RE: mildsteel reinforcement for temp and shrinkage in pt slab
RE: mildsteel reinforcement for temp and shrinkage in pt slab
RE: mildsteel reinforcement for temp and shrinkage in pt slab
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: mildsteel reinforcement for temp and shrinkage in pt slab
RE: mildsteel reinforcement for temp and shrinkage in pt slab
RE: mildsteel reinforcement for temp and shrinkage in pt slab
For a roof slab I would put it at the top to improve waterproofing. Otherwise the surface on which you want to control cracks the most, so if you have marble tiles on it, then the top, if you have exposed soffits, probably the bottom.
Unless it is greater than about 250-300 thick, then both faces.
tolchijb
Beam PT cannot be assumed to provide s&T reinforcement in the slab. Thise who suggest an elastic distribution of the prestress from a beam into the parallel slab don't know what they are talkking about so do not listen to them.
RE: mildsteel reinforcement for temp and shrinkage in pt slab
RE: mildsteel reinforcement for temp and shrinkage in pt slab
Also, I would recommend placing additonal steel at the bottom of the beams that frame into the exterior columns and lapping it with the column steel. There are restraint effects here caused by the footing that tend to put the bottom of the beam/frame into negative flexure.
Good luck.