See below for more information on contraction joints remove forms and install waterproofing and drainage system.
How to build a poured concrete wall.
So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
Measure out from that nail to where the other face of your wall will be and place another nail.
Try to make the frame pieces as long as you need them to be.
How to pour a concrete retaining wall.
Drive a nail into the concrete here.
Measure and mark footing locations.
So if your wall is 8 inches wide your two nails should be 8 inches apart.
Once the first row is installed pack native soil to grade level on both sides of this course to anchor the wall in place.
If your frame is tall you may need to begin.
Measure from the edge of your concrete footing to the point where the outside face of your wall will be.
Pour footings and wall.
Rest the frame pieces against a solid surface to prevent them from falling.
Then use the marking paint and measuring tape to lay.
Finish the surface of the wall as desired.
Refer to the plan or schematic for the retaining wall.
Level to level blocks lengthwise and a torpedo level to level the front to back.
If the wall exceeds four feet in height footings should be poured separately.
If you re building a long wall build the frame in sections.
Install the first course of blocks using a taut string line to establish a straight row.
Allow concrete to cure.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.