So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
How to build a poured concrete wall.
Try to make the frame pieces as long as you need them to be.
Allow concrete to cure.
If you re building a long wall build the frame in sections.
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 you re building your own forms you will probably.
Level to level blocks lengthwise and a torpedo level to level the front to back.
Measure and mark footing locations.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.
Pour footings and wall.
Create contraction joints every 4 6 feet.
If your frame is tall you may need to begin.
Then use the marking paint and measuring tape to lay.
Drive a nail into the concrete here.
So if your wall is 8 inches wide your two nails should be 8 inches apart.
Measure from the edge of your concrete footing to the point where the outside face of your wall will be.
Install the first course of blocks using a taut string line to establish a straight row.
There are materials as well but they don t last long.
See below for more information on contraction joints remove forms and install waterproofing and drainage system.
Refer to the plan or schematic for the retaining wall.
Measure out from that nail to where the other face of your wall will be and place another nail.
Finish the surface of the wall as desired.