Techno Press
Techno Press

Geomechanics and Engineering
  Volume 5, Number 4, August 2013 , pages 343-362
DOI: https://doi.org/10.12989/gae.2013.5.4.343
 


Generalized Schmertmann Equation for settlement estimation of shallow footings in saturated and unsaturated sands
Fathi M.O. Mohamed, Sai K. Vanapalli and Murat Saatcioglu

 
Abstract
    Simple relationships are proposed in this paper by modifying the Schmertmann\'s equation for settlement estimations of footings (i.e., B/L ≈ 1) carrying vertical loads in saturated and unsaturated sandy soils. The modified method is developed using model plate load tests (PLTs) and cone penetration tests (CPTs) results conducted in saturated and unsaturated sand in a controlled laboratory environment. Seven in-situ large-scale footings tested under both saturated and unsaturated conditions in sands were used to validate the proposed technique. The results of the study are encouraging as they provide reliable estimates of the settlement of shallow footings in both saturated and unsaturated sands using the conventional CPT results.
 
Key Words
    shallow footings; unsaturated sand; matric suction; settlement; PLT; CPT
 
Address
Fathi M.O. Mohamed, Sai K. Vanapalli and Murat Saatcioglu: Department of Civil Engineering, University of Ottawa, Ottawa, Ontario, K1N 6N5, CANADA
 

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