Podium Construction - Transferring forces to Precast Slab
Podium Construction - Transferring forces to Precast Slab
(OP)
I am curious to know what options other engineers have had success with as far as anchoring hold downs to precast concrete planks or any other floor system when designing podium type buildings. I was thinking I'd like to avoid drilling/epoxy in anchor bolts due to the fear of hitting/dealing with slab reinforcement. So are weld plates an option? Problem there is I don't think Simpson makes a weldable hold down, or maybe they do...
Thanks!
Thanks!






RE: Podium Construction - Transferring forces to Precast Slab
How would you connect the weld plate to the precast concrete?
Professional and Structural Engineer (ME, NH)
American Concrete Industries
www.americanconcrete.com
RE: Podium Construction - Transferring forces to Precast Slab
1) Cast in plates can be installed. Precsters certainly don't love this, but they can do it. With the voids in the plank it's tough to get great capacities.
2) Thru-bolting. This leads to aesthetic and fire protection issues that need to be resolved.
3) Force the use of solid planks where high demand hold downs land. Then use drill and epoxy.
4) None of the details shown below are precast friendly but, in a perfect world, I'd want to do something similar.
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: Podium Construction - Transferring forces to Precast Slab
RE: Podium Construction - Transferring forces to Precast Slab
EIT
www.HowToEngineer.com
RE: Podium Construction - Transferring forces to Precast Slab
Professional and Structural Engineer (ME, NH)
American Concrete Industries
www.americanconcrete.com
RE: Podium Construction - Transferring forces to Precast Slab
RE: Podium Construction - Transferring forces to Precast Slab
EIT
www.HowToEngineer.com
RE: Podium Construction - Transferring forces to Precast Slab
1) location within the plank. Maybe 1/2".
2) Final location of the plank. Say 1".
So allow for 40 mm +/-? Maybe TME can better define the appropriate tolerances.
I like the weld plate idea if it can be made to work,
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: Podium Construction - Transferring forces to Precast Slab
The weld plate may be a better way to go if the tolerances can't be accommodated otherwise. We've used embedded weld plates for precast utility buildings with the slab an walls shipped separate. Worked well.
Professional and Structural Engineer (ME, NH)
American Concrete Industries
www.americanconcrete.com