PEMB on Retaining Walls
PEMB on Retaining Walls
(OP)
I really haven't seen any PEBM (moment frame type) utilizing below grade floors / basements. Almost all are on SOG. Is this due to the lateral load at the pin ended column on a retaining wall? (Guess that depends on magnitude, but just wanted to ask in general practice).
Also, is there any benefit of using PEMB's typical moment frame over steel roof joist (with plywood shearwall) in terms of constructability, cost, performance? Any feedback is greatly appreciated!
Also, is there any benefit of using PEMB's typical moment frame over steel roof joist (with plywood shearwall) in terms of constructability, cost, performance? Any feedback is greatly appreciated!






RE: PEMB on Retaining Walls
Hope this helps a bit,
Dave
Thaidavid
RE: PEMB on Retaining Walls
And I think it's Alexander Newman who has a great book on PEMB foundations. Goes through different types of foundations used, loads, etc. Great reference.
Lastly, I'm not all negative on PEMBs, they work and they're inexpensive, but the client needs to know that they will likely leak, won't be able to be modified much, and will be flexible when loaded. If it's a warehouse where no one cares, it might be the right solution.
RE: PEMB on Retaining Walls
I'm with you on the PEMB's. Re-sale is also going to be lower which may make up some of the cost differential.
I had a client make a giant house and garage out of a new PEMB. It turned out pretty cool.
RE: PEMB on Retaining Walls
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: PEMB on Retaining Walls
RE: PEMB on Retaining Walls
You can easily set up a model of the PEMB with a horizontal spring support and COMPARE IT with a model of the PEMB with unyielding pinned supports. This will give you an idea of how the cantilever wall will weaken the frame. I suppose you can specify an increased load to make up for the weakening affect. I doubt that you could get the PEMB manufacturer to design their frame to accommodate to support movement.