Hi everyone. I have a potential retaining wall project in the works. I live in the northeast, where freeze and thaw plays a role in every exterior concrete project. I'm going back and forth between foam and cement block construction. Either way, I plan on having a footing, with rebar for reinforcement. Does anyone have any input on incorporating expansion joints into the wall. Without them, I'm pretty certain there will be heaving and separation. The wall will be 4' tall. Thank for any advice you guys have.
If you build the wall with CMU (block) , use a couple courses of open bottom lintel blocks with #4 rebar. This allows you to have horizontal steel as well as vertical. Grouting the blocks in is a must. Backfill as Jeff Kirt recommended with stone. Backfilling with expansive soil leads to the heaving and separation you are looking to avoid. Don't skimp on the footer either, a rule of thumb on retaining walls is footer width to be 50% of wall height.
Thanks guys. Very helpful info.