Support of Wall Pier w/Tremie Seal
Support of Wall Pier w/Tremie Seal
(OP)
I am designing a wall pier for a river crossing. The pier will be on a footing that will be founded on a tremie seal supported by piles. I have sample calcs of a pile design for a bridge pier with a tremie seal from US Steel-Highway Structures Design Handbook from the early 1970s. To design the piles, USS shows moments being summed from design forces (stream flow, wind, etc) at the top of footing. It then states, "Transfer the (governing) forces and moments acting at the top of the footing ... down to the top of the piles. To these forces add the weight of the footing the weight of the tremie seal, and the saturated weight of the soil and water acting on the footing and the tremie seal." Would it be more correct to design the piles for moments based on a moment arm that extends all the way to the bottom of the seal, or is that too conservative?





RE: Support of Wall Pier w/Tremie Seal
When you transfer the forces "down to the top of piles" your moments will increase due to additional arm
RE: Support of Wall Pier w/Tremie Seal
RE: Support of Wall Pier w/Tremie Seal