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Bearing Capacity for Retaining Walls

Ultimate bearing capacity of retaining walls may be estimated from the base bearing capacity equation with dimensionless factors provided by the Meyerhof, Hansen, or Vesic methods. The dimensionless correction factors need consider only depth and load inclination for retaining walls. The basic bearing capacity equation is rewritten

q_u = cN_cZ_cdZ_ci + 1/2 B'Y'_HN_YZ_YdZ_Yi + σ'_DN_qZ_qdZ_qi

where N_c ,N_Z ,N_q and Z_cZ_YZ_q are given in the discription of different models. If Hansen’s model is used, then the exponent for Z_i and Z_qishould be changed from 5 to 2.

The allowable bearing capacity may be estimated using FS = 2 for cohesionless soils and FS =3 for cohesive soils.



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