Question

EMERGENCY - Geotech plz help

A 2 m wide surface supported strip footing will be used to support a masonry bearing wall for a commercial building. The wall loading imposed onto the foundation will be 300 kN per meter of wall length. The soil under the foundation has a saturated unit weight of 20 kN/m”. If the water table is at the surface. what is the effective vertical stress at 2 m below the centre of the foundation when the foundation is loaded? (use the attached information) -B- -- - - - -- -- -- -- - VIO - - -- - Ao = 1 {a +sin a cos(a +2B)} a. 102.9 kN/m2 b. 82.5 kN/m2 OC 205.8 kN/m2 d. 20.4 kN/m2

Answer 1

Giver, Loaded diagram with eff- stress calculation at centre is: K 2m- S Sin a 2 = 11/15 im im 7 cost about a = sin" (is) = 26.565 givenq = 300 N/m Now, A-s op { « + Sin ce coo (d+ 2P)} here, p=0, Sin Q = since - tai cos a = 185 - DE Q = 2(26-565) = 53-1307 7 Aa = (300) {53-1301+ letal) let)? As, it is acting at centre with equally dispersed pressure on either side. sans { 5393 * $}]*2 - [5149937x2 = 102.998 kN/m²