In Figure 1, for the anchor slab in sand, H = 1.52 m, h = 0.91 m, B = 1.22 m, S′ = 2.13 m, ϕ′ = 30°, and γ = 17.3 kN/m3. The anchor plates are made of concrete and have a thickness of 76 mm. Using Ovesen and Stromann’s method, calculate the ultimate holding capacity of each anchor. Take γconcrete = 23.58 kN/m3.

Figure 1 (a) Actual case for row of anchors; (b) variation of (Be − B)/(H + h) with (S′ − B)/(H + h) (Based on Ovesen and Stromann, 1972)

 

 

(Be-B)/(H+h) H 0.5 0.4 0.3 0.2 0.1 0 h 0 K -S B * (a) -S'. Dense sand Loose sand 0.5 (S' - B)/(H-h) (b) Sand Y 1.0 1.25