Hi, sbw,
thx for the discussion. I ran you example and got your F.S (nail angle 10 degree).
The Snail says under ultimate "inputed values (and bond stress under soil parameters) automatically divided by indicated factor of safety". I used pre-factored and input bond stress of 14/1.51=9.27 psi...
Thank you Panars, this is the clearest answer I ever had.
What about the ultimate bond strength vs. allowable? For an instance, for stiff clay, if I decided that the ultimate bond strength is 60 kPa. The required Factor of Safety for pullout failure mode is 2, and the required factor of safety...
Thank you.
I don't know how to apply LRFD in Soil Nail Wall Design. I'm using ASD. In Caltrans SNail program, both bond strength (under Soil Parameters) and Bond Stress Factor (under Varying Reinforcement) need to be specified. My question was, for pull out factor of safety of 2.0 (As specified...
I have two questions regarding the use of SNails:
1) Should the Ultimate Bond Strength or allowable (Qu/2) be used?
2) What determines the Bond Stress Factor?
thx