How to lay landscape blocks on a slope,r \u0026 s hardscaping,design backyard patio - New On 2016

Along your marked line, carefully dig a trench slightly wider than the blocks (ideally, the width of your soil tamper), and deep enough so the first course of blocks is below ground level.
If your wall goes across a slope, you can dig a series of stepped trenches so that only one course of blocks is below ground.
Add several inches of sharp gravel or rock dust to the bottom of the trench, and use this layer to do your final leveling and tamping.
To cut a block in two, score a line around the middle with a brick chisel, then position the chisel on your scored line, and strike it with the small sledgehammer. Backfill the area behind the wall in layers, with gravel against the wall and fill dirt behind it, firmly tamping down each layer.
Hi steve, i am in the process of building a retaining wall, and am prepared to guess that your wall is made of concrete blocks. I am putting a 10′ ring, three rows high, around a tree with blocks that have a tab in the back. My guess is that the blocks you’re using are aligned when they lock together so each row is slightly stepped back from the one below, as are the rounded stones in the photo in the article above. I notice in the morning several rows (randomly) will have an inch or two of wet area across several blocks.
I would like to build a retaining wall maybe 2 -3 rows and need to know how many blocks I will need.
We live in WA state though, and that slope is quite steep so his situation may be extreme, but 6′ is still quite high for just stackers. Knowing how much rebar is in the pad, and how high (total vertical weight per square foot) the wall will be is necessary to know for sure.
All the guidelines I have found state to break off the retaining tab of my wall stone for the first layer, then backfill on both sides to keep the first stone layer from shifting. I am building 4 foot high retaining wall using interlocking blocks and struggling with the base. I have a 7′ tall unmortared block retaining wall and recently added gutters to the front of my house that now empty behind this retaining wall.
I’m having a difficult time finding the blocks in the 1st and 3rd pictures from the top in this article. You can buy retaining wall blocks at Home Depot for as little at 60 cents each, and spend up to $3 each for larger and nicer blocks.

The keystone shape of the blocks leaves triangular gaps between the stones, which are covered up with special blocks called capstones.
The lip fits snugly against the block below it, creating an interlocking joint that holds up to pressure, while the decorative front gives an attractive finish. Count on at least one block per linear foot, and count on it taking more blocks than your estimate suggests!
Level the string with a line level, and use the string as a guide for laying the rest of the first course. If your wall has straight edges on the ends, start your next course with a block that has been cut in half.
Continue laying courses of stones, making sure the lip of the stone is tight against the stone below it, and also making sure the seams are offset. As you can see in the photos, the blocks are usually tapered to make moderate curves without needing to be cut. Right now the left side is about 4′ high and sloped without any wall is and quite stable.
After i leveled 1st row, I started the second row with block centered over the seam of the lower.
That would result in each row having a bit smaller diameter circle than the one above it, and since the blocks are the same length, the cumulative effect would be that it would take fewer blocks to make a circle, throwing the joints off. At the front corner there is asphalt from the driveway extending about six inches where the row of blocks should be at the corner of the garage, and the asphalt is sloped down away from the garage approx. I was thinking road base the builders glue as we do not want to bury 1 block for cost reasons. Build a block retaining wall to add level tiers to your yard, which prevent erosion and provide a perfect place for a flower garden. This Old House has a great video at the link below with in-depth instructions on constructing a block retaining wall. If you started the first course with a partial block, trim a full block so it overlaps the seam below by at least 3 inches. Lay the third course the same way you laid the second course, leaving an exit point for the drainpipe at one end of the wall.
I am going to put in about 6 terraces to allow for the slope and am making each section about 12 inches high to allow for clearance with the siding on the house.

By replacing the slope and leveling the yard to either side of the wall, you can create two distinct tiers for split level form and function.
The blocks are durable and can easily be cut into smaller pieces to offset courses as you build your wall.
Put topsoil in the space between the landscape fabric and the top of the wall and fill what remains of the trench in front of the wall. I am having a hard time estimating the number of blocks that will be buried for each terrace going into the hillside.
I would like to build a 2 block high retaining wall to keep the mulch from washing away as well as for aesthetics. I put a few blocks down to see how they would look and they are higher than some of the shrubs. As you work, verify that the blocks are level; if not, shim the low end with asphalt shingle or some landscape fabric. Then dig the trench depth to meet the blocks on the asphalt since that would have to be the starting point. If you have to piece together lengths of landscape fabric, overlap any adjoining edges by 3 to 4 inches. When you begin building the rest of the wall, alternate so one row begins with a full block and the next with a half block.
When you’re a course or two below the top of the wall, fold the landscape fabric over the gravel and trim off any excess.
The block retaining wall would have open spaces so I can plant flowers and to allow for any drainage. If I remove a large boxwood plant I can leave the asphalt alone and set the blocks back 8 inches or so from the corner of the garage in a trench. Put the level across the new block and at least one of its neighbors to make sure the tops of the blocks are level with each other.

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Comments to «How to lay landscape blocks on a slope»

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