This is almost an embarrasing question as it is pretty basic but there are 2 questions here:
1.) See attached, have I derived the equations for shear and moment correctly based on the soil pressure distribution given by the ASAE design guide for shallow foundations (Va and Ma would be positive)?
2.) Normally I would think that these wouldn't even need to be checked because the length of the pier foundation is so short. However I have a situation where the diameter of the drilled pier needs to be about 36" and 15 feet deep (Va=12k and Ma=170k-ft), which is on the border of the max depth based on dmax equation. According to the guide the equations are still useful however am I incorrectly applying this design methodology in this situation?
Thanks!
EIT
1.) See attached, have I derived the equations for shear and moment correctly based on the soil pressure distribution given by the ASAE design guide for shallow foundations (Va and Ma would be positive)?
2.) Normally I would think that these wouldn't even need to be checked because the length of the pier foundation is so short. However I have a situation where the diameter of the drilled pier needs to be about 36" and 15 feet deep (Va=12k and Ma=170k-ft), which is on the border of the max depth based on dmax equation. According to the guide the equations are still useful however am I incorrectly applying this design methodology in this situation?
Thanks!
EIT
