Temp and shrinkage reinforcing.
Temp and shrinkage reinforcing.
(OP)
I have a 10" thick precast concrete plank. I like the reinforcing for temp and shrinkage to be .002*Ag. How many layers of reinforcing should I provide? Both top and bottom surfaces will be exposed.






RE: Temp and shrinkage reinforcing.
Never, but never question engineer's judgement
RE: Temp and shrinkage reinforcing.
Are they hollow-core? What kind of conditions will they be in (inside or outside)?
Have you discussed this with the pre-caster?
Are they pre-stressed?
RE: Temp and shrinkage reinforcing.
RE: Temp and shrinkage reinforcing.
It may not even be possible to provide a continuous mild steel bar transverse without going into the cavities (or having very minimal cover at the bottom.
RE: Temp and shrinkage reinforcing.
These are solid slabs, about 18' long and 8' wide.
RE: Temp and shrinkage reinforcing.
RE: Temp and shrinkage reinforcing.
1. Help to transfer the load transversely.
2. after erected the slabs will be restrained transversely. Depending on how soon after casting they are erected, the concrete will continue to shrink. So these reinforcing will act as T&S reinforcing.
RE: Temp and shrinkage reinforcing.
RE: Temp and shrinkage reinforcing.
I really don't think you need T&S steel for these. They may shrink, but they will shrink into themselves. I would talk to the pre-caster, they will tell you this is not necessary.
The only place you might see shrinkage cracks is at the slab joints, but steel in the slab will not do anything for that.