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Re: misc. thoughts Basement Walls

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Andrew,
 
Basement walls can be designed to span horizontally.  I've use the charts in the PCA publication,  "Rectangular Concrete Tanks" for factors for the analysis.  Since there will be little deformation of the walls under load, it may be necessary to use at-rest lateral soil pressure instead of the lower active pressure usually used in retaining wall design.
 
Nels Roselund
Structural Engineer
South San Gabriel, CA
njineer(--nospam--at)att.net