Calculate the amount of rebar needed for reinforcing a wall.
Pour concrete retaining wall rebar.
Once the forms are full of cement you can smooth out the top of the wall.
Rather than messing around with mortar they lay the walls down like lego pieces using concrete while it s still in the bag.
Building a retaining wall in the conventional ways is not a trivial matter.
Mix the fill mortar slightly wetter than what you d use for joints.
That s right the idea is that.
Allow concrete to cure.
Place it so that the 3 8 inch gap is filled.
Refer to the directions on the cement mix bag and allow the cement to fully cure or dry before removing the forms.
Smooth the top with a trowel.
Create contraction joints every 4 6 feet.
For each additional 20 foot increase of the wall length it will add an additional amount of overlap.
Finish the surface of the wall as desired.
Rebar placement in walls rebar is placed horizontally and vertically in the wall in a grid pattern.
One line lies along the centerline of the footing and the others are spaced 8 inches on center from the adjacent bars.
As a minimum 4 rebar 1 2 inch is spaced vertically at 36 inches on center continued to within 8 inches of the top of the wall placed on the tension side the inside face of the wall.
Mix your mortar and place a 1 inch bed of mortar around the damp footing surface.
With the tip of your trowel push the mortar into the footing so that it creates a v shape.
Once the truck has reached the end of a section spread the concrete out evenly and a touch higher than the form with a concrete placer rake.
If your wall is over 40 feet long it will add 2x the amount of overlap required.
Pour the concrete in small sections spreading the concrete by moving the chute back and forth and by having the driver pull forward as you go.
So diyers have come up with an interesting trick.
The bottom layer of rebar usually is 3 inches above the ground supported by rebar chairs or concrete bricks.
In slabs and walls then of an inch is required.
When you reach the finished height of the concrete block retaining wall fill those cores containing rebar to the top with mortar.
If your wall is over 20 feet long it will add the amount of overlap required.
Spread additional mortar and lay cap block to finish the wall.
If formed concrete not exposed to earth or weather.
If the wall exceeds four feet in height footings should be poured separately.
Pour the retaining wall.
This calculator assumes that you are using 20 foot long lengths of rebar.
It includes five lines of bars running parallel to the length of the wall.
Roll the wheelbarrow of cement over to your wooden forms and pour the cement into the footing and form area.