Concrete bags for a retaining wall saw an article in this old house magazine.
Concrete bag retaining wall with rebar.
Mix the fill mortar slightly wetter than what you d use for joints.
Spread additional mortar and lay cap block to finish the wall.
When steel makes contact with concrete a non reactive film develops on the surface of the rebar that helps protect it from corroding.
Step 3 stack the second level of concrete bags on the first level.
For best results drive steel reinforcing rods through each bag to anchor them.
Calculate the amount of rebar needed for reinforcing a wall.
Once the concrete sets up you can either wait for the paper to biodegrade peel it off or burn it off.
If your wall is over 40 feet long it will add 2x the amount of overlap required.
Concrete and rebar reinforced steel is manufactured as bars rebar or welded wire mesh.
Stagger the second level bags over the bags on the first level.
Anchor the bags to the slope with 3 8 rebar.
When you reach the finished height of the concrete block retaining wall fill those cores containing rebar to the top with mortar.
Stack the bags alternate rows by half a bag just like laying brick or block and drive some 3 rebar down through every 3rd or 4th bag.
Smooth the top with a trowel.
Once the bags are laid you wet everything down thoroughly with a hose saturating all of the bags.
Lay the first level of concrete bags out where the wall will be built up.
The concept is fairly straightforward.
As each tier is laid backfill with tamped in dirt to assure a solid bank.
Dec 6 2016 explore greg carpenter s board cement bag retaining wall on pinterest.
Place bags wet for 5 days straight and when cured peal off the paper solid wall will be doing around the huge oak tree at edge of back yard then plant lots of giant elephant ears.
Retaining wall of unopened sacks of concrete i built a seawall using 80 sakrete bags many years ago.
Prior to wetting the concrete you can easily drive rebar into the bags as reinforcement.
Set bags in a running bond pattern with the ends butted together and corners interlocked.
This calculator assumes that you are using 20 foot long lengths of rebar.
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