Doctormo
Thanks for the response and commentary. The 1:1 slope from the back of the footing appears to be the more accurate model for wall backfill regarding lateral pressures.
f-d
The influence zone was probably a bad choice of words. I am interested in the failure plane or failure envelope wrt lateral earth pressures on the wall. I believe the area behind the wall defined by this plane should be backfilled with cohesionless material. Text book references this...
Hello: I am looking for opinons for the location of the structural backfill influence zone for foundation wall or retaining wall design. I typically recommend eqivelent fluid pressures for open graded material within the influence zone of the wall, ie. 45+Phi/2. For cohesionless material this...
The road rutted excessively at the edges and showed no signs of instability near the centerline (as stated). The rutted areas will be repaired. The reasoning for all the measurements and calculations was for back-up documentation to show how we estimated our loading conditions. Just saying a...
Thanks for the input everyone. Heres what we ended up doing.
1. Determined the tire pressure with the truck empty. (110 psi)
2. Loaded the truck with the maximum load it could carry.(68,880#)
3. Measured the tire pressure. (remained at 110 psi)
4. Measured the contact area of the squatted tire...
We need to proofroll a heavy haul road using a minimum simulated wheel loading of 90 psi. The tandem axle dump truck we are planning on using will have a tire pressure of 110 psi. The issue is, what do you base the loading on; the 110 psi tire pressure or the weight of the load divided over...
Hello: I need to determine the minimum water level in various empoundments based on a 50 year drought return period. The minimum water level is for certifying potential firefighting water sources in rural areas in accordance with NFPA Standard 1142. I've contacted NRCS, however, they can only...
