Questions tagged [drainage]

Use this tag when the topic is about controlling water runoff, particularly near structures but also in yards or elsewhere.

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What is going on with my foundation footer?

I have a wet subfloor and been advised to lay a french drain around the house. I have been watching a lot of youtube videos on how to lay ag pipes immediately next to the foundation footer (the red ...
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2 answers
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How do I get my deck to drain into the gutter instead of dripping?

I have a metal pergola with slated roof. When it rains moderately the water from the slats falls directly down instead of draining into the gutter. looking for some solution to fix this so all water ...
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What should I fill my yard with after draining stagnant water?

First time homeowner. I don't know how to develop this area, which use to be unused overgrown space on the property until my dad cut down all the small trees so the area can be used for a garden. He ...
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How soon should I see moisture levels improve after grading?

An inspector showed me several spots in my basement where I have excessive moisture levels in the drywall along the exterior walls in the basement, and along parts of the exposed concrete block ...
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Can I increase the efficiency of an exterior sump system by installing a check valve?

My house only has an exterior sump system for a walkout basement in the central midwest. The sump seems to run through a cycle, pumping the water through the drain pipe (about 6" below the ...
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Dry Well Against Foundation

I live in a house with a slab foundation. The soil is red clay. One of the downspouts outputs 8 inches above the ground into a small flower bed and walkway. When it rains, a divot is formed into the ...
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How can I drain rainwater from a pit under house?

Our house is build on 1m brick piles. In one corner is a 50cm deep brick-lined pit which used to contain a load of swimming pool gear that I recently had removed (the pool was filled in long ago, and ...
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Is it ok to feed these waste water pipes into a gutter channel

I'm in the process of replacing a load of rotten decking. While I have the decking up I decided to fit a gutter channel under the outside tap. The channel is quite deep (shown) and will go against the ...
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Old home clay foundation pipe?

My home was built in 1948. It's having a lot of bowing and shearing issues and I need to put steel beams up in the basement. An interior drain system has also been recommended but I'm reluctant - and ...
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1 answer
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Drainage issue in the yard

Below is drawing of our yard sloping (depicted by arrows along the lines) and what I'd like to do to fix the drainage issue. During the rain, water comes from our neighbors as well as from street ...
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Safely detaching 4" HDPE triplewall drainage pipe from a PVC elbow that's attached together with something

I have a French drain behind a retaining wall, which is connected to a 45 degree joint and then a drain pipe (blue arrow). Due to soil erosion, the wall has shifted and that bent the drain pipe. I ...
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Sewer smell from floor drain

i have a small drain built into the ground, and once in a while at random times, it smells like sewers. The smell also stops after a random amount of time. It can go some days without smell, and the ...
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What is this small (~1" x 2") rectangular hole in my basement?

We have some vinyl tile flooring in our basement and the section that contains the washer/dryer had one of the tiles develop a hole due to some kind of depression underneath. I took the time to cut ...
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How to properly install a washer drain with a floor drain?

I need to install a washing machine drain using a cast iron floor drain. The area is very small, and this is the only drain I can use (I do not own the home so cannot do much about the plumbing). The ...
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What are purposes of these things that I found buried?

Ive been trying to install some rainwater drainage pipes, so I’ve been digging a lot lately. I’ve uncovered a few things--I hope that they’re either not critical or that I’m not disturbing them. First,...
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What yard drainage solution to choose and what do i do with existing perforated pipe?

I have a buddy who's home is on a slab, when it rains water floods an area by his drive way. He installed 3 short 20-50 foot runs of perforated pvc. One in front that drains at bottom of slope. One is ...
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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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Water entry into basement in tricky area

I have a tricky water problem. Whenever there is heavy rain, water seeps through cracks in the basement wall underneath the basement window in the picture. The plastic cover seems to help a little but ...
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Washing machine drainage leaking - new appliance

I have a new washing machine (there wasn't one there before as I've recently moved in). When the machine is running the water spouts out particularly through a vertical 'vent' hose leaving a small ...
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3 votes
1 answer
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Basement flooding from backwater valve pit groundwater... but why now?

We recently purchased a ~20 year old house with no disclosed history of flooding. Over the winter season, we've seen significant rainfall three times. Each storm, we've seen a substantial flood in our ...
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19 votes
7 answers
5k views

How can I remove a dead animal stuck inside an underground stormwater drain pipe?

An animal, probably a fat rat, has got stuck in an underground 100mm (4 inch) stormwater drain pipe and blocked it somewhere in our front yard, possibly under the driveway. The drain has started to ...
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Rain diverter on metal roof

I have a standing-seam metal roof (without gutters), which pitches down over the front door. This causes a couple of issues: It is awkward to go out the door when it is raining, as you need to walk ...
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Connecting RO to Disposal drainline along with Dishwasher Drainline

First timer DIYer here. I have a very compact piping system underneath kitchen sink. Currently I have Insinkerator Badger 5 system installed which is taking dishwasher drainage in its inlet. I want to ...
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2 answers
101 views

Weird drain design?

I recently moved into a new house and we quickly noticed weird smells coming from the shower drain. After taking the plug out we noticed the drain has space for water to pool at the bottom without ...
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Horizontal turns in drain line

There is a problematic horizontal change of direction in this drainage pipe. It is connected to a sanitary tee, but the flow of water is directed right into the cleanout cap instead of the 45 degree ...
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15 votes
4 answers
4k views

French Drain: Why do I need 3" of rock bedding beneath the pipe?

I'm having issues with a leaky basement in the Portland area. There's dirt, mud, and vegetation outside of my foundation wall, and it's absorbing lots of rainwater. 4 feet of it is inside my property ...
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2 answers
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Plumbing toilet fill tube runs into copper pipe picture attached

Any idea about whats going on here with the copper pipe?
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2 answers
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Should PVC DVW landscape pipe be glued?

I'm re-routing a section of 4" landscape drain. "Triple-wall" pipe was initially installed and has been pinched almost completely closed by a nearby tree, so I'm installing Sch 40 DWV ...
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1 answer
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Bathtub draining slow

My bathtub drains very slowly. Even when it's finished draining it still has water sitting at the top of the drain. Even trying to use Drano causes the Drano to back up into the bottom of the tub ...
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3 votes
2 answers
280 views

Is there any filter or material that let only water through not dirt

I need a filter or some kind of cloth material which only lets water through and not the dirt this way I can get filtered water and I can soak it through french drain or dry well. I just couldn't find ...
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56 views

Bathroom sink drainage mystery

Top floor bathroom sink in a 3 story townhouse. When running the hot or cold water at a low flow rate, the sink drains normally. Running at high flow rate causes backup in the sink, i.e., the drain is ...
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2 votes
0 answers
73 views

Swimming pool as water barrel for irrigation

I have a 60 year old concrete swimming pool still in good condition but not used as a pool for 20 years. It is now a nature pool good for fireflies, bats, toads, ducks, etc. The original chain link ...
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New french drain not flowing

2 years ago I installed a perimeter drain on the wet side of my house. It daylights at the road and works great. Last week, I installed an additional 30' leg. The new leg is inboard of the existing ...
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2 votes
1 answer
139 views

Sanity check on DIY drainage repair

Background: I have zero plumbing experience, hence the sanity check. Everything I describe here is brand new to me. My house is in a hilly area in Silicon Valley. All of the houses in this ...
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2 answers
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How to stop gurgling/gushing sound from a drain hose?

I'm in the process of building an NFT hydroponics system that includes drain hoses connecting the growing channels vertically. They are the black corrugated hoses in the picture below and the noise ...
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2 answers
257 views

How far out to install French drain so water can't pass underneath it and still get into house?

We have Bilco doors in our backyard that go down into our basement. Our basement is cinder block foundation. Unfortunately our entire back yard slopes downward toward the house, and so during heavy ...
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3 votes
2 answers
382 views

How to drain grey water in clay ground in safe and secured manner

I have a building which sits on top of clay ground so I couldn't soak away the grey water. I explored solutions like leechfield,soakaway,cement ring well but all fails in clay ground. I'd like some ...
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1 vote
2 answers
108 views

How far should cement ring well be from building wall

I have a Residential building(India) which has no space in both front and back yard. It's a newly built two storey building( 3 houses ). There is 5 feet space available parallel to building wall. As ...
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1 vote
1 answer
91 views

How to install k-style gutter guards

I have 5" k-style gutters and am attempting to install guards on them myself. I picked up samples of 2 different styles at my local big box store; both of these are advertised as fitting 4", ...
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2 answers
63 views

Condensate drain line corroding foundation. Looking for solution

Our furnace is in an attic, above a two story home. The installed condensate drain runs to an outside wall and drips. The slightly corrosive condensate drips onto a piling with a steel connection ...
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How can I prevent water pooling in my backyard

There is one area in my backyard where the water stands for a little while when it rains. This area is where my deck ends. Any ideas how to avoid this water pooling?
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1 vote
1 answer
236 views

Creating an air gap in sump pump discharge to prevent freezing

My sump pump discharge is located ~6" above grade and the drain line is on the surface (i.e. not buried). I'd like to create an air gap so that the water has somewhere to go if the drain line ...
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2 votes
2 answers
237 views

Finding guards for your gutters when you don't know the make or model

Several years ago I let the guy who pressure washed our house convince me to take out the gutter guards. I have come to deeply regret this decision. My gutters are constantly clogging, and I'm ...
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1 vote
0 answers
136 views

How to determine if tethered sump pump float switch is triggering at the right height?

Yikes! It rained a ton yesterday and my basement flooded. Water soaking the floor. When I looked into the sump pump, it had lots of water in it. I pulled up on the float and it all emptied. As we ...
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0 votes
1 answer
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How to reattach a cast iron drainpipe

The cast iron drain pipe fell off my wall this morning. It’s the entire length from guttering to drain. It looks like it was attached with very old nails which have worked their way out, taking some ...
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2 answers
140 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 ...
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1 vote
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Sump Drainage Options

I seem to have an overactive sump. Last year there was an empty lot next to my house. My builder raised my sump because it was running almost constantly. This year I installed sod and a small sump ...
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2 votes
1 answer
238 views

Finished grade in my yard is pure clay. How much topsoil should I add?

Ever since we moved into our home, the backyard grading has needed work. It basically slopes right into the back of the house. I put in a small trench a few feet away from the foundation to divert ...
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2 answers
59 views

Correcting concrete grading towards drain

I have a small (cca 5 sq ft) basin in front of my basement door. It is between a staircase (bottom of the picture is the first step riser) and the door threshold (top of the picture near where it's ...
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2 votes
2 answers
100 views

Heat pump condensation drainage re-use potability or toxicity

I recently had my older style air conditioner replaced with a newer style high-efficiency electric heat pump. Working great so far. One thing that is different is that it apparently extracts quite a ...
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