dirtStruct
Structural
- Apr 14, 2010
- 4
We are using auger cast piles for a project and I have some very high tensile loads I need to resist. We have the loads per the geotechnical engineer that the piles can handle, but we need to design the pile itself to take the load and transfer the force to the soil. We plan on using 120ksi bar for the center bar to resist the tensile forces and will take this down for the full length of the pile. We will then use a rebar cage to resist the lateral forces and bending for the top 30 feet. My question is in the design of the tensile reinforcing, do I design the tension rebar like a column or like an anchor? For instance do I design it for T = As(0.9fy) or do I design it for T = 0.75(As(1.9fy,Fu or 125000 psi whichever is smallest)) and follow Appendix D? This is assuming that I am designing the load for strength design.