1. Bearing capacity of strip footings on sand slopes reinforced with geogrid and grid anchors;Alamshahi;Geotext. Geomembr.,2009
2. American Railway Engineering and Maintenance of Way Association Manual for Railway Engineering, 2006. Economics of Railway Engineering and Operations-construction and Maintenance Operations, vol. 4, chapter 16, part 10.
3. ASTM, 2003. Standard Test Method for Bearing Capacity of Soil for Static Load and Spread Footings. D1194. West Conshohocken, PA.
4. ASTM, 2006. Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions. D3080. West Conshohocken, PA.
5. ASTM, 2007a. Standard Test Method for Particle-size Analysis of Soils. D422. West Conshohocken, PA.