Questions tagged [retaining-wall]

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How do I prevent pest access to a French drain pipe going through a retaining wall?

We just had our retaining wall rebuilt by a contractor but for some reason they left the French drain pipe just hanging out unfinished over the sidewalk. What is the best way to deal with it? ...
jmjfisher's user avatar
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is the grade behind new retaining wall ok?

Had a 60 year old stone and mortar wall replaced with a new modern stone wall. Hired a local company to do it and it looks good but it's considerably shorter than I thought it was going to be. Is the ...
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2 votes
1 answer
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Shoring up side of old raised concrete

I live in an old (1920) Baltimore rowhouse. The concrete basement floor was—as far as I can tell from having drilled in a few spots—poured over a pretty variable, haphazard substrate, probably just ...
CrazyChucky's user avatar
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Digging near a retaining wall

I'm thinking of ideas for building a shed on the side of my house, and a good spot in my opinion would be to have it on the side of my house. My property is a thin long lot so my front yard is all ...
Sean's user avatar
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1 vote
2 answers
90 views

Number of posts needed? [closed]

I have no idea what math needs to be done to figure this out, but let me set the stage for you. I'm building a BIG planter box in my yard. 27ft X 54ft X 5ft high. We want to utilize our whole yard to ...
bob152637485's user avatar
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2 answers
103 views

How can I build a retaining wall and secure these fence posts while conserving space?

I have leveled the area between our building and the fenced property boundary, removing soil next to the brickwork, which required me to work around four fence posts. Now, I plan to build a modular ...
Reza's user avatar
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How do I properly rebuild this retaining wall?

Retaining Wall breakdown progress I wanted to replace the posts on my porch but the retaining wall was getting dangerously close to them so I had to address it first. I started taking it down and I ...
Elias's user avatar
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1 answer
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What's the safest way to pour a slab without undermining existing posts [closed]

Im working on a 2 story addition that is resting on 6x6 posts. Unfortunately due to timing I was unable to work out pouring a slab prior to our contractor begining our addition project and pouring the ...
Squirrel's user avatar
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What concrete mix product to use to fill retaining wall’s sleeve

I have a 6' retaining wall and as per code, it requires railing for safety. While building the retaining wall I ask the contractor to install a sleeve every 4 to 6 feets. Now we have sleeves installed,...
PowerTech's user avatar
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1 answer
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Leaning sloped retaining wall

I’m trying to fix a 10 years old sloped leaning retaining wall on the side of the house. I have done a lot of research and the causes can be summarized as follow: Improper drainage that cause ...
Henry's user avatar
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2 votes
1 answer
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Type of drill to use for installing reinforcing rebar 18" into wood retaining wall?

I just finished assembling the frame for a gravel pad where I plan to put a shed. Because I put it into the side of a slope, I needed to use 5 layers of 4x4's to get the proper depth. Currently ...
Greg Stecker's user avatar
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Exterior Retaining Wall Leaning Options

MY house was built in the mid 70's and has foundation issues everywhere. I recently spotted one of my retaining walls leaning. I have explored the cost to have my foundation company place more deadman ...
sillykumquat's user avatar
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Replacing broken concrete yard barrier and steps

New homeowner here! My neighbor's lawn is shown here on the right. Their lawn stops at the triangular concrete slab at the bottom-right of the first image. The semi-broken concrete barrier (retaining ...
gleepglop's user avatar
2 votes
1 answer
66 views

How to repair small concrete retaining wall

I have a small retaining wall between the walk at the back of the house, and a flower bed. The wall also support small pillars for a roof overhang. There is a break in the wall, that over the years ...
RoJo's user avatar
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1 vote
2 answers
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How should I attach sacrificial anodes to steel columns in concrete?

Soldier pile retaining wall. We're putting 25 foot long w8x48 beams into 16 foot deep holes and filling with concrete. So the steel beam is encased in concrete. I would like to increase their ...
user227963's user avatar
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How can I build a retaining wall which looks like a fence? [closed]

The back fence of the garden is on top of a very weird, small slope. I want to level out the garden by going down. I need ideas on how to build a retaining wall, to look like part of the fence. I’m ...
KEJohns's user avatar
1 vote
0 answers
84 views

Reinforcing a Vertically Plumb Concrete Block Retaining Wall

I'm in the process of replacing a retaining wall that was supporting a small "flower bed" in the front of this house because it had started to lean to the point it was unsafe. Unfortunately, ...
Cody Smith's user avatar
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Do I need to worry about a leaning, 60 year old retaining wall?

I have a 5 foot high retaining wall, made with CMU blocks, built in 1962. I don't have much information about (e.g. the shape of the footing, depth, etc) other than that it seems to be just a gravity ...
Dong Shi's user avatar
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1 answer
280 views

Weep Vents for double skin retaining wall

I'm going to building a retaining wall to level my garden. The wall is not touching the house, I'm trying to work out the drainage solutions for this wall. Its not going to be too dissimilar from the ...
JackU's user avatar
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3 votes
1 answer
329 views

Compacting gravel on wet ground

I'm building a retaining wall from concrete blocks. The foundation will be 8 inches of 3/4 inch gravel compacted with a plate compactor. The trench is dug, but it has rained a good bit the last two ...
Chip Burwell's user avatar
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Compacted 8910 after heavy rains

I am working on a retaining wall. My footer is 18” deep x 24” wide. I have a compacted layer of 8910 that is 6” deep placed in 2 lifts and compacted well after each lift. It felt pretty solid. Started ...
Thomas Nails's user avatar
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3 answers
180 views

Would burying a wooden retaining wall cause problems?

CLARIFICATION: Any issue regarding the function (pinning dirt in place) of the retaining wall is not at issue for this question. A wooden retaining wall has been illegally built in an HOA to support ...
gatorback's user avatar
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1 answer
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Drainage for playground with 12 inches retaining wall?

I am building a playground area, and as part of having the ground level, I ended up building a retaining wall, and I have a question about drainage. Some data on the project: The wall will be ...
Nobita's user avatar
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2 answers
635 views

Can I install aluminum railing on the top of the 6 feet retaining wall?

I have contractor company building a retaining wall for me which is 6 feet tall wall. They don't install fence. So I have the cap glued down properly and secured. Can I get the railing install on top ...
PowerTech's user avatar
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1 answer
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Can I have 100% flat space behind Retaining wall?

I have steep slope in my backyard and I hired a contractor company to build a 4 feet average retaining wall for me so that slope can be leveled. They are almost done and now are saying there will be 1-...
PowerTech's user avatar
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What specific tradesman should I call to rebuild a failing below grade retaining wall and the porch above it?

The stairs to the exterior entrance to my basement run parallel to my house and under my kitchen porch, which has a trap door to access it. The retaining wall, which runs parallel to the foundation, ...
domicile's user avatar
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0 votes
1 answer
297 views

Retrofitting Drain Where Patio Meets Retaining Wall

I just installed a patio 24' x 22' with a retaining wall that is around the perimeter of it, and it looks like water pools too much at the end of the slope (where patio meets retaining wall). There ...
Skylimit57's user avatar
-1 votes
2 answers
113 views

How close to align pavers up to a timber retaining wall

I'm wanting to lay concrete pavers on a walkway sloped towards a timber retaining wall. The question I have is how close to the timber retaining wall should I lay the pavers. Laid immediately up to ...
Andrew's user avatar
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2 votes
1 answer
248 views

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, ...
Topper Harley's user avatar
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1 answer
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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, ...
user4867444's user avatar
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2 answers
250 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. ...
WestCoastProjects's user avatar
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1 answer
262 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 ...
Taylor's user avatar
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0 votes
1 answer
147 views

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 ...
PowerTech's user avatar
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0 votes
2 answers
379 views

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 ...
Dan the not so handyman's user avatar
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2 answers
88 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 ...
Wynne's user avatar
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0 votes
2 answers
667 views

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 ...
LRitter's user avatar
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3 votes
2 answers
1k views

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" ...
pennstump's user avatar
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1 vote
2 answers
435 views

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 ...
Labarc35's user avatar
0 votes
2 answers
3k 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 ...
Erin's user avatar
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0 answers
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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 ...
NathanPolomona's user avatar
0 votes
2 answers
818 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 ...
Spectrem's user avatar
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1 vote
1 answer
2k views

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 ...
pennstump's user avatar
  • 223
3 votes
2 answers
2k 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 ...
pennstump's user avatar
  • 223
2 votes
2 answers
148 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 ...
LeopardSkinPillBoxHat's user avatar
3 votes
5 answers
5k 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 ...
Village's user avatar
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0 votes
1 answer
249 views

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?
Fony Tinlay's user avatar
0 votes
3 answers
983 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 ...
Village's user avatar
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2 votes
1 answer
870 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 ...
lithic's user avatar
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1 vote
1 answer
68 views

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 ...
Wynne's user avatar
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0 votes
1 answer
1k views

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 ...
dabi's user avatar
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