Prestressed Sandwich Walls
Prestressed Sandwich Walls
(OP)
Hi!
Can I put 1/2" strands at 1.5" with 30kips pullout for 8" sandwich walls (3"-2"(insulation)-3")?
I am concerned about the cracks along the strands especially at the anchorage zone.
Isn't there any guideline about this problem?
PCI Desing Handbook says 1/2" strands are allowable for the wall (wythe) of thickness 3" or greater.
Doesn't pullout force matter?
Thanks!






RE: Prestressed Sandwich Walls
And 1/2" dia strand at 1.5" c/c spacing is a ridiculous amount of prestress.
What structural loads do these panels support?
RE: Prestressed Sandwich Walls
Let's assume 20 psf of wind load.
1.5" is the strand location in the middle of each wythe, not c-c spacing.
And, about 70% of Pi will be applied.
RE: Prestressed Sandwich Walls
RE: Prestressed Sandwich Walls
Along with Ingenuity's questions.
What are you minimum cover requirements. What type of prestress? Is it only in one direction?
If you actually gave the information an engineer needs to design something like this you might get some answers.