The problem with "working with them" is that is is expensive and often makes the walls thicker (12" +) which gave the architect fits (so what else is new).
I discussed this with Bijan Aalami of ADAPT (they design big towers all over the world) and he felt like it was completely unnecessary.
I...
We have many projects where we have 2-3 PT floors of subteranean parking with 1-2 floors of PT above grade and then 5 floors of wood.
Most of these building have more than adequate shear provided in the perimeter basement walls and other exterior concrete walls.
The buildings also happen to...
jen4950:
Thanks for the feedback. We are looking at making most of the transitions at closer to 12:1. The one big drop (step) is closer to 6:1. We are using ADAPT for FEM modelling of the slab and are assuming the transitions to be more like ramps than steps and then applying additional...
We have a 2-way pt slab that has several drops from one end of the structure to the next. Some drops are a few inches - others are up to 4 feet. Most of the slabs we have done in the past have been relatively flat.
How do you handle drops in the PT Slab? What do you consider the maximum drop...
