Pile Supported Floodwall - Dowels within Transverse Joints of Pile Cap

[CWEngineer]

I am working on an extension of a pile supported flood wall. We will be adjoining another pile supported flood wall next to the existing pile supported flood wall.

The longitudinal reinforcement in the pile cap must be continuously reinforced (i.e, the reinforcement must go through any transverse joints in the pile cap). To meet the continuous reinforcement requirement in the pile cap, we are going to have to install dowels to connect the new pile cap to the existing pile cap.

The piles of the proposed flood wall will be placed in such a way that the new pile supported flood wall will be a stand alone structure, hence there will be no load transfer in the transverse joint of the existing and new pile cap. Does this seem doable?

Also, if it shown that there is no load transfer between the existing pile cap and new pile cap, are calculations as described in ACI 318 Appendix D still required? Or is just providing standard dowels (hole length, hole diameter and rebar) appropriate, to meet the continuous reinforcement requirement?

Thanks

 

[MotorCity]

If you dowel new to existing, there is a potential for load transfer whether it is intended or not.

 

[GeoPaveTraffic]

What kind of water stop are you installing between the two sections of flood wall? How much movement can that water stop accommodate?

Mike Lambert

 

[CWEngineer]

A Type Y Waterstop is being provided, as shown on EM 1110-2-2104. The expansion joint movement and allowable expansion of the waterstop has been addressed. Just looking for some guidance/feedback on dowel calculations if the connection between two pile caps is designed so that there is no load transfer.