Sorry, this is the problemWhy "B" is not the correct answear?.....I'm getting 1,767 lb/ft
I am getting:prob_1.pdfSorry, this is the problemWhy "B" is not the correct answear?.....I'm getting 1,767 lb/ft
You are right. correct answear is A).I am getting:prob_1.pdfSorry, this is the problemWhy "B" is not the correct answear?.....I'm getting 1,767 lb/ft
K_a = 0.28 (for phi = 32, delta = 16, beta = 0, theta = 90)
R_a = 1610 lb/ft
R_ah = 1550 lb/ft
Answer (A)
No, the sliding force is R_ah. What do you mean by TOTAL weight of the wall = 100 kips? That's not per foot (width) right? The frictional resistance will be total weight (wall + soil) times the friction coefficient. Assuming the fricton angle UNDER the wall footing to be also 16 degrees, the friction coefficient = tan 16 = 0.287. I assume you mean 100 x 0.287 = 28.7 kips. But that's the RESISTANCE to sliding, not the force CAUSING sliding.now if the total weight of the wall is equal to 100 kips and the the problem ask to calculate sliding force the result will be S=28.7 kips...am I right?
yes, that's what I referred to"Resisting to Sliding"No, the sliding force is R_ah. What do you mean by TOTAL weight of the wall = 100 kips? That's not per foot (width) right? The frictional resistance will be total weight (wall + soil) times the friction coefficient. Assuming the fricton angle UNDER the wall footing to be also 16 degrees, the friction coefficient = tan 16 = 0.287. I assume you mean 100 x 0.287 = 28.7 kips. But that's the RESISTANCE to sliding, not the force CAUSING sliding.now if the total weight of the wall is equal to 100 kips and the the problem ask to calculate sliding force the result will be S=28.7 kips...am I right?
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