Separating CMU stair and elevator from lateral load resisting system
Separating CMU stair and elevator from lateral load resisting system
(OP)
I'm designing a 3 story storage center with light framed cold formed shear walls, elevated composite deck concrete slabs and metal roof. The foundations and cmu stair/elevator walls are designed by others. I haven't had any correspondence with the other engineer and we got comments back from the municipality. The engineer stated that his walls are not to brace the structure. I have not had to deal with this situation before,but I'm trying to determine how I'm going to separate the walls from the floor laterally. Just provide bearing angles attached to the walls with slotted connections to the floor system and compressible joint fillers between the edge of floor and wall? This changed my whole design of the building pretty much (I know I know why wasn't there a conversation between the other engineer and myself?). I didn't talk to the engineer because when I sent the drawings to the client for review I never got anything to coordinate with and they just sent them in so now here we are. Any ideas on separating the walls from the lateral system? I have the ideas but feasibility/construct-ability are HUGE components that I'm not sure I'm hitting.






RE: Separating CMU stair and elevator from lateral load resisting system
Alternatively, there is the concept of deformation compatibility - you provide the stair engineer with assumed story drift values and their stair needs to be checked for that imposed drift.
Under that drift, the stair does end up taking load, perhaps more load than your drift would suggest because the stair is probably more stiff than your system.
The two really should be designed as one system by one engineer unless there is a pure separation joint.
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RE: Separating CMU stair and elevator from lateral load resisting system
RE: Separating CMU stair and elevator from lateral load resisting system
RE: Separating CMU stair and elevator from lateral load resisting system
RE: Separating CMU stair and elevator from lateral load resisting system
RE: Separating CMU stair and elevator from lateral load resisting system
As an aside, who is the Engineer of Record?
RE: Separating CMU stair and elevator from lateral load resisting system
RE: Separating CMU stair and elevator from lateral load resisting system
RE: Separating CMU stair and elevator from lateral load resisting system
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