Over time the bags will degrade and you will have an elegant and permanent retaining wall.
Cement bag concrete bag retaining wall.
See how well it works in part 2.
Rather than messing around with mortar they lay the walls down like lego pieces using concrete while it s still in the bag.
Offset the next row by about half or a third of the length of the concrete bag while stacking it on top of the first row.
That s right the idea is that you don t open the packaging.
Concrete runs about 4 bucks a bag and at height of 3 or so would require a good number to provide 3 feet of wall.
Rip rap is also available in a biodegradable polyester scrim reinforced kraft bag for improved durability.
Step 7 fill the trench between the dirt and the concrete wall with some gravel.
Video of the day.
There is no mixing or forming required simply stack the bags as described in the usage instructions.
From a cost perspective basic wall blocks would look much better and be cheaper you could set them up as a pair if you need to extend beyond the 2 foot height limit.
The 2020 update is now up today june 15 2020 a 5 5 minute video update about my concrete bag retaining wall it s a real nail biter.
There are block retaining walls stone retaining walls and poured concrete retaining walls but these can be quite complicated and expensive.
Friends old and new show up and help us put up the first section of our retaining wall.
Building a cement bag retaining wall around a culvert by pouring dry concrete mix in small lunch bags and stacking them like bricks.
We re using a dry bag method stacking in courses and stabilizing wit.
So diyers have come up with an interesting trick.
Set it back about a half to a quarter inch so the wall will lean gently into the hill.
This will keep our culverts and driveway all intact while giving it a cool look.
They look like sandbags but are actually hessian bags filled with wet concrete and pinned together with steel rods making a good solid retaining wall.
Rip rap is a sand and cement mixture packaged in a biodegradable kraft bag designed for erosion control applications.
Building a retaining wall in the conventional ways above is not a trivial matter.