Questions tagged [retaining-wall]

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Rainwater Pipe Through Gabion Wall

I need to build a relatively short and about 70-100 cm high retaining wall in my garden. I have chosen to make it out of gabion for various reasons, one of them being price. The main reason however, ...
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1 answer
75 views

Can a small wood retaining wall be replaced by trees?

There is a small retaining wall on my property, made of wooden blocks. It is slowly deteriorating, so I had an expert come to check it out: they said it would be good for at least another 10 years, ...
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2 answers
70 views

How to pile drive hooked rebar

I use a combination of a sledgehammer and jackhammer to drive [straight] rebar for use in retaining walls . The former gets the stakes started and the latter really drives them home with authority. ...
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1 answer
106 views

How do I fix this retaining wall?

I have a broken retaining wall that I'd like to fix up. It's cracked, presumably from water pressure building up behind it. It's rectangular, about 13'x33', and one of the four sides is connected to ...
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Railing over tall Retaining wall

I have leveling my slopped backyard. In order to leveled it, the retaining wall will be 5.5' tall and 20 feet long. we are using AB classic (8 in. H x 12 in. D x 18 in. ) weight 75 lbs. Is it ok go ...
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2 answers
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Retaining wall on top of concrete AND next to fence

I have an outdoor area which is currently pebbled and retained next to a fence. I plan on removing the pebbles and turfing, and am also considering planting a green hedge because I don't like the look ...
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2 answers
52 views

Clean + Sand = Modified?

I have about a yard of sand and a yard of clean crushed stone left over from a project. For another project - a 12-18" high stone garden wall - I need about a yard of modified crushed stone. Can ...
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2 answers
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How do a fix this solid, leaning, solid concrete retaining wall

I have a solid concrete retaining wall that’s leaning against my neighbor’s property. In turn, he has let his yard foliage grow to hedge against it collapsing, which is why it’s hard to get clear ...
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3 votes
2 answers
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How to Anchor to Top of CMU Cinder Block Wall?

I want to install a fence along the top of a retaining wall. The wall is made of standard 8x8x16 CMUs and is filled with 3500psi concrete and #4 rebar in every cell. The posts have 4"x4" ...
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2 answers
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How can I protect my foundation when removing old retaining walls and regrading?

I have this old and crumbling tiered stone wall in the back of my property. My deck sits on top the wall. There is a covered porch next to the deck, that’s built on top of block walls (not part of the ...
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0 votes
2 answers
400 views

What are my options for erosion control under this fence?

I am looking at options for mitigating erosion under this fence area. It is also an easement area shared with us and the higher neighboring property. I need: 1. A simple and cost effective solution to ...
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Quarry block sunken firepit

I want to put limestone blocks 2x2x5’ for seats in a 10x12, 4’ deep fireplace area, I rented a digger and dig a good amount and plan to put 6” of bass or minus then the blocks around the pit.. will it ...
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2 answers
189 views

Temporary brace for a wooden retaining wall

I have a 2.5 ft tall retaining wall made with 2x6 planks held up by 4x4 wooden posts. Part of the retaining wall is now blowing out after the Texas winter power outage. I believe that my pool behind ...
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1 vote
1 answer
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Should drainage pipe behind a retaining wall only have holes on the top?

I am mid-project in a DIY yard project. I have subbed out a large retaining wall to a civil / wall contractor. It's 220 feet long, between 2-5' in height, and makes 2 90-degree turns. It's built to ...
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1 vote
0 answers
611 views

Should the high side of a concrete block retaining wall be sealed?

I am mid-project in a DIY yard project. I have subbed out a large retaining wall to a civil / wall contractor. It’s 220 feet long, between 2-5′ in height, and makes 2 90-degree turns. It’s built to ...
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2 votes
2 answers
108 views

Dealing with incline from back door to fence

We have plans for a new house build - see my attached crude mockup where the front of the house is on the left and the backyard is the green shaded area. The land has up to 1.8m incline from front to ...
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3 votes
5 answers
2k views

How to prevent rebar from rusting in the ground?

I am building a wall with rebar, cinder blocks, and rebar, as I've seen in many YouTube videos. ________||_ ___________ ___________ _____ | || | | | | <--cinder ...
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Building a retaining wall with dense concrete blocks, best way to lay each course?

I've seen a few walls that use the top method versus the more common stretcher/running bond, are there any benefits to doing it the first way?
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3 answers
319 views

What material to tie two cinder block walls together?

I am building a 24" high planter made from cinder block walls: Sketch below. Though it looks like a normal planter, water is pumped in from a pond, and instead of dirt, various layers of ...
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2 votes
1 answer
353 views

Are my hardwood sleepers shrinking?

I've built many retaining walls and garden beds with class 2 hardwood sleepers (2.4m x 200mm x 50mm). A few weeks after installing them in a vertical position with no gap between sleepers, a ...
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1 vote
1 answer
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Is this species of stone wall-worthy

There are a lot of stones on my property of the kind shown in the picture. They are hard and heavy, but extremely brittle. The pictures shows half of a stone that I dropped from about 2' high on ...
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Can I run conduit through a retaining wall?

I have a terraced backyard with 3 retaining walls, each about 4' high. One is poured concrete, the other two are wood (PT 3x12). I am looking to add some outlets to the backyard from an existing ...
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1 vote
2 answers
102 views

How to properly allow for drainage for a backyard retaining wall?

I'm building a retaining wall for a circular fire pit area in my backyard, which has some slope to it. I've stacked the stones along the front part of the fire pit to make a kind of retaining wall, ...
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1 answer
2k views

How do I fix a wooden retaining wall?

I need suggestions on how to fix my retaining wall. Is there a quick and cheap way to fix it? Unfortunately, I don't have the money right now to spend on replacing everything. You will notice that ...
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1 vote
1 answer
658 views

How can I raise grade near my fence without making soil contact?

My house is on slightly sloped land, and I am trying to fill soil to level the ground to make it more flat to lay lawn. There will be 30-40cm height of soil that would go against the fence, but I don’...
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1 vote
1 answer
58 views

How can I restore a CBU retaining wall with a vertical crack at the corner?

A 30 year old concrete retaining wall is showing signs of age: What can be done to: halt the deformation of the blocks & wall? restore the wall to a state closer to 'new'?
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0 votes
1 answer
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Should I build a segmental retaining wall on top of a grade beam with piles?

80 foot long retaining wall that ranges from 4 feet tall on one end to 12 feet tall on the other. I am planning on a segmental wall made of Versa-Lok "Bronco 18" blocks - 1200+ pounds each. ...
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0 votes
3 answers
729 views

Best way to fill gaps between lumber and masonry or rocks

We have built 4x4 retaining walls around existing rocks and concrete that we were unable to get rid of. The idea was - and is - use something fill the gaps between the lumber and the rocks / cements. ...
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How to choose fabric and gravel for retaining wall

I want to build a 15ft long retaining wall which is located at the bottom of a slope, surrounded with springs, against the fence. In searching for materials I have no idea which fabric I should choose ...
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1 vote
2 answers
82 views

Small retaining walls [closed]

I recently had contractor build several retaining walls ranging from 12" to 20" high. They dug a shallow one inch trench then filled it with mortar, upon which they laid and leveled first row of ...
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7 votes
2 answers
206 views

How can I level and secure retaining wall steps?

We have some retaining wall steps that are in dire need of repair. We would like to re-level some of them and re-adhere all of the cap stones so they no longer rock. Is it possible to create a ...
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2 votes
2 answers
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Why don't segmental retaining walls need any piers or anchoring below grade?

I have built two soldier pile retaining walls (where you slot the boards between I-Beams you sink into the ground) with good success - but that success was due to: sinking the piles at least their ...
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1 vote
1 answer
104 views

What should I do about this bowing foundation wall?

I'm currently in the process of buying my first home, and I found a property on the market that was priced significantly less than most homes in the area. The seller's justification for this was a ...
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0 answers
57 views

Slope has gobbled up the retaining walls

A few tiered retaining walls were built on a slope on my property about 70 years ago. By now they have been completely consumed by the slope as you can see on the picture below where, in the white ...
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Garden wall pointing / capping advice needed

I’m hoping to get some advice on a project I’m planning. I bought a house last year that has a 2 foot retaining wall between the decking and the lawn. It’s a red brick wall and looks to be in pretty ...
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1 vote
0 answers
34 views

Sealing/resurfacing exterior concrete retaining wall

I have a 3 ft concrete retaining wall that runs across our backyard. It collects a lot of black mildew with white spots. Is there a sealant or other surfacing material that I can use to help keep ...
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1 vote
0 answers
172 views

Soutions for this steep gravel driveway - retaining wall?

We are considering buying this property which will be a "fixer-upper" but is in a valuable seaside location that we could never afford otherwise. Biggest drawback is this driveway, which after ...
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-1 votes
1 answer
979 views

Composite Shims on Short Retaining Wall

Would there be an issue with using composite shims to help level one layer of block on top of another? Other possible relevant info I am using 6in x 12in retaining wall block. Max height is 3 blocks ...
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7 votes
5 answers
6k views

Setting fence post in gravel/backfill?

I am attempting to build a privacy fence that will sit just behind a retaining wall (as in, on the ground behind the wall and not on the wall itself). While digging today I realized that while the ...
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1 answer
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Should this retaining wall have drainage

Should the wall in the picture below have better drainage (e.g. perforated pipes)? And, if yes, is it possible to add them at this point? The walkway above has the same slate top you see at the very ...
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1 vote
2 answers
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Concrete retaining wall with lean and crack, looking for input

We bought our 100 year old house “as-is” a year ago with various small cracks and a firm, but somewhat eroded foundation. This all needs to be addressed eventually, however, a large crack with ...
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1 vote
1 answer
533 views

Foundation for retaining wall on a hardcore base?

I'm looking to build a retaining wall 800mm (2.5ft) high and 225mm wide at the side of my house. During the original construction groundworks, the ground around my house had to be raised up about ...
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0 votes
2 answers
1k views

1m high retaining wall build

I'm hoping to use 215mm concrete breeze blocks to build a 20m long retaining wall at 1m high. Do I need to build the blocks on their flat or can it be a regular single skin wall with piers every so ...
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2 votes
2 answers
100 views

How best to repair a cavity in the base of a retaining wall

I'm looking for some pointers on how best to go about repairing a hole and cavity in slate wall. The wall is the retaining wall at the rear of a house. Above and behind the wall there is a garden. The ...
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2 votes
2 answers
3k views

Can I fill cinder blocks with soil/dirt?

I have two short raised beds made of cinder blocks (8 in. and 16 in. tall) that isn't finished yet. I was wondering if it's okay to fill the voids of the blocks with excess soil from my yard? I live ...
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0 votes
3 answers
1k views

How to seal crevices in dry stack rock wall to prevent gopher activity?

I've recently had a retainer wall built in the landscape using the dry-stack method (see photos). Unfortunately, there has already been two occasions within past month of gopher activity behind the ...
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1 answer
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Leaning timber retaining wall

I have a timber retaining wall about 4 feet tall builting with 6x6 which is leaning probably due to the downspout draining inside. I'm wondering if using an earth auger to relieve some of the ...
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1 vote
2 answers
191 views

How do I build a fence with zero experience?

I've never built a fence or have never done any outdoor construction. I'm pretty handy and do most of my interior maintenance. I have a total of 780 feet where I need to put up a fence. I'm still ...
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0 votes
0 answers
292 views

Fence post behind retaining wall, drainage concern

I need to replace an old 2ft retaining wall(railroad ties) along my property line. There is not currently a fence there so I was going to take this project to add one. I am located in the PNW so there ...
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1 vote
1 answer
1k views

How do I protect the front side of a wood retaining wall?

I have a wood retaining wall made of 3x12 pressure-treated boards similar to the one pictured here. The backside has MiraDrain and 3/4" drainage rock. I have an excess of earth to manage and one ...
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