elevator wall footings

[calculor]

does anybody know of a good reference book for designing elevator wall footings?

 

[DaveAtkins]

An elevator is supported on a mat footing quite often, because the buffer under the center of the elevator induces a large concentrated load on the footing.

DaveAtkins

 

[SperlingPE]

Agree with DA.
Talk to elevator supplier get loads induced on foundation from them. Typically a mat foundation.

 

[calculor]

how do you analyze the mat foundation with the line load from the shaft walls?

 

[dik]

Like a slab supported on all four sides... if the shaft is 7'X9' out to out, then the pad will be about 8'X10'. If the shaft is 60K + 30K for elev + 50K for DL and LL... say 150k, then the soil pressure is about 2K/sq.ft. plus any lateral load the elevator shaft is carrying. The pad of the elevator shaft would likely be 12" min thick and be reinforced as a slab carrying a load of about 2ksf...

Dik