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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Foundation water seepage?

Recently purchased a new home and am noticing that there appears to be what seems to be an issue with water seeping through the foundation in the basement. Shortly after a decent rain the wall will ...
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34 views

Mountain top drainage issue

We live atop a large hill and due to how the driveway is I constantly have water and mud on top of a small area of my driveway. This area is supposed to be a low area to care water down the driveway ...
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28 views

Extend underground rainwater drain pipe down hill

I need to extend an underground drain pipe. The current pipe is underground a few inches and ends at the top of a hill that's a few feet tall. The hill is angled at (perhaps) 35 degrees. The current ...
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2k views

Replace pop-up with flip sink drain covers?

I had my house replumbed to code and put new sink basins in with pop up wastes. But I find that the water drains slowly, and the brand I'm using breaks easily so that they don't click in and out. I've ...
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218 views

drainage problem from kitchen sink

My kitchen sink(double sink) backs up, there is no clog I have removed the trap, I have also removed the basement trap and snaked both ways. Now the bathroom sink will also backup at same time, so I ...
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86 views

Lowering the basement, water table 2 metre deep

My house is constructed on the side of a slope where the top of the slope is built the road. I'd like to dig out the basement which is not high enough to stand in mostly, and is just clay. As part ...
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64 views

Found this hole is basement floor, what should I do?

Found this hole in the basement floor after moving the dryer. The dryer was standing on a piece of plywood covering the hole. It has a pipe connected to the cavity at about half of the depth, but the ...
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1answer
87 views

If my home has no footing, how dangerous is it for a contractor to install an indoor drainage system in my basement?

I have gotten estimates from some contractors for installing indoor drainage in my basement. They'd be breaking into the concrete floor around the edges of the basement, right next to the basement ...
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108 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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64 views

Is this a drain-pipe?

I am about to install a water heater in our condo. This is inside the house so I want to be careful about possible leaks. I am putting a drain pan underneath it and need to connect it to a drain ...
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1answer
55 views

Bathroom sink drainage

Yesterday I tried to get my bathroom sink to drain better and I used a plunger. Unfortunately water got into the overflow and now water is coming out through the hole. What can I do? ...
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1answer
143 views

My pool drainage seems to break the law of physics

I apologise if this is answered somewhere else, but I can't find the answer. I have an above-ground pool, with an overflow pipe coming out of it about 4" from the top. This overflow pipe then ...
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35 views

Is this wet venting solution ok?

I am completely redoing my basement bathroom and am wondering if this way of venting the plumbing is ok. From what I've seen, wet venting is the most money and time efficient way to do it, so I would ...
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50 views

Would filling this part of my patio with drain rock improve drainage, at least in the short-term?

I moved into my house this time last year, so I don't really know much in the way of its history, and how things have been done etc. In the back garden there is a patio, and this patio is split into ...
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43 views

Tanked balcony drain has cover stuck down with sealant - how to remove?

We live in a leasehold (nearest US equivalent: condo) flat (apartment) at the top of a seven-storey building. Only our floor has real balconies, and the floor of each balcony is effectively the roof ...
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47 views

Can a bathtub work without a drain waste or removal shoe?

I guess the drain waste or removal shoe was missing which I saw after trying to change out bathtub drain. Is this a really important part and is it difficult to install?
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262 views

I live in NJ. Do I need a p-trap and vent on a washer drain line not going directly to the stack?

Here is my situation. As it sits now, my washer drains directly into the slop sink right next to it. I live in a split level and I am moving the washer & Dryer up one half level about 6 feet in ...
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43 views

No Drainage Around Concrete Basement Floor

This question/comment is in regards to the sump pump question I had yesterday. While digging the hole to set my new sump pump basin I realized that there was very little if any gravel under the actual ...
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241 views

How to redirect water pooling behind skylights

I have a pair of skylights in my roof that leak every time it rains. I've tried silicone and a roofing sealant along the edges.. still leaks. During the last storm heavy rain I went up to check it out ...
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146 views

Sealing Off Gravity Pipe from Crawl Space

I currently have a 6" clay pipe for eliminating water from my crawlspace. The pipe exits my crawlspace about a foot from a corner wall, travels 15', and opens to air in a ditch (for now). It is ...
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1k views

extra pit next to sump pump

I have a basement with a properly installed sump pump. I have another hole approximately 1 foot away from the sump hole cut to the same dimensions. There are at least 2 pipes that run into the unused ...
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198 views

Mystery: Water vanished from flooded basement with no floor drain

I live on a century old home whose unfinished basement got flooded this week. We had heavy rainfall which overwhelmed the city's storm sewer. At a certain point there were about two inches of water ...
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735 views

Pouring drainage channel right next to foundation, how to protect the foundation?

Ugh. How can I arrange details on this concrete pour, to not damage the foundation later? This is San Francisco Bay area (no freezing). The visible clay pipe is a high volume gravity drain from the ...
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170 views

Can I build a concave mortared-stone sidewalk that will also act as a drainage flume?

I recently had a landscaping company install a mortared-stone drainage flume on the interior of a retaining wall at my house: It looks great and works just as well. It naturally has me wondering ... ...
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37 views

outbuilding drain into dry well

Aside from code differences between jurisdictions, is it acceptable to tie an outbuilding floor drain into a dry well drainage system? The outbuilding does not have a water supply, the slope of the ...
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113 views

Is soil in an open rock spoon drain a blocker? Think we've got a cowboy job done

Being on a slope, our place has a lot of problems with surface water flooding. We've had a spoon drain installed along our upper boundary to redirect surface water away from the house. Here's a pic ...
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45 views

Changing drainage from washing machine

I have a new build house that has a drainage on the side of the house as shown in this video: https://www.youtube.com/watch?v=BU_-fnvqCOI I want to change this so that it does not drain on the side ...
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69 views

Drainage problem

I built a room to my existing house which created a pitch on the roofline. When it pours rain, the water pools under my window and seeps into my house. I have put up gutters and also a rain ...
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121 views

Hooking up drain in dishwasher

I have a 2 yr old Bosch dishwasher that does not drain into the sink drain but straight down into a pipe in the ceiling below. That pipe has the proper P trap etc and worked well for my previous ...
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2k views

What is a 'normal' time for water to completely drain out of a shower pan?

I installed a new shower with slimline tray. Now when I am showering there is a fair build up of water in the tray. Nothing major or overflowing, but not quite perfect. As a gauge, when I stop the ...
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33 views

(CA) Code for outdoor sink drainage?

I'm planning an outdoor BBQ island with a simple sink with cold water for handwashing. My city defers most code to California's code but in both cases I'm having trouble finding the relevant section. ...
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1answer
46 views

How deep should PVC drain pipe be buried to ensure grass will grow above ground?

I’m burying 4” solid PVC drain pipe (not a French drain) in my yard for downspout & surface drainage. How deep should the pipes be buried in order to ensure that grass will grow above it? Due to a ...
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23 views

Pipe cleaning machine without guide hose - how to prevent tile and furniture damage?

Looking for a pipe cleaning machine, I see only the very expensive ones with a guide hose ("Spiralschutzschlauch") that will protect the bathroom from fast-rotating spiral ends (2.5 - 5 m!). ...
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34 views

What should be considered when updating wall assembly in only one section of a wall?

Background: We live in a 1920s two-story foursquare home in New England. The house has painted wood shakes/shingles siding on the second story, and wood clapboard siding on the first story. We will ...
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24 views

Concern with whirlpool tub pump drainage

I am having a whirlpool tub installed by a plumber. This is the tub. We purchased it with an upgraded pump, specifically this one. It came from the factory looking like this: The pump is mounted at ...
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25 views

Small atrium in 3rd floor of building has a storm drain that's leaking down to the crawlspace. How do i fix this?

My building (old 4 unit Victorian) has a small atrium on the 3rd floor with a storm drain that's leaking all the way down to the crawlspace underneath the building. When it rains, i can hear light ...
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1answer
311 views

Sump pump horizontal distance - Why do 90 deg angles put more load on the pump after a vertical drop?

I'm installing a new sump pump basin in a new location in my crawl space. I currently have a Zoeller M53 1/3 HP. The discharge pipe will come out the back of my house, but I want to bring the ...
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28 views

Finishing basement with unusual drainage

I live in a historic home, and the previous owners made some interesting choices, to say the least. As a result, there are lots of things here that I’ve not encountered elsewhere. I’m currently ...
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38 views

What would “level with the driveway” mean exactly

Working on a big gravel patio project and already asked three questions here about it (1, 2, 3). Now, a third one, which may seem not so important, but if I make the wrong decision, it will be ...
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20 views

How to run new exterior A/C drain line

I'm trying to replace my A/C drain pipe. It was draining into an old PVC pipe contraption that did nothing - water was leaking all over the brick and foundation. I pushed the PVC to the side and ...
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0answers
120 views

How to improve basement stairwell drainage?

So we have a basement walkout door. There is a stairwell that leads down to it. There’s a big landing but this is the drain in the middle of it. It has a tendency to get clogged with debris from trees ...
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22 views

BMP Drain Inspection

We have a new house, and we were going through our "stuff to do each year" list in the house manual. We have what we colloquially refer to as a "box of rocks" that's part of the ...
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20 views

Interior french drain with 3" footing

My basement (built 1945) has been taking on water seepage via the cold joint between the wall and floor slabs. This has been fairly steady for the last month due to a very high water table . I've ...
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29 views

Extending pvc drainage pipe that's “type c” (tele-duct)

I need to extend some 4" PVC drainage pipe. The problem I'm having is that the existing pipe is "Type C" ("tele-duct"). It has a slightly different outer diameter (4.350") than a typical PVC pipe (e....
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40 views

How fix a smoothie drain pipe in kitchen double sink

To solve the problem is de 2 draining pipe are draining too slowly ;DOUBLE SINK WITH DRAIN HOLE 40mm ;can I joint the two sink drain together with T-fitting at the center of the 2 sink and then out ...
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1answer
68 views

Connect a channel drain to existing drainpipe

I want to add a channel drain at the front of my lean-to in order to direct rainwater from the lean-to's drainpipe into the existing house drainpipe. I understand that this is not a typical usage ...
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1answer
198 views

Overflow Pipe Popped off Drywell

After a severe rainstorm I noticed the back overflow pipe of our drywell popped out of the ground. I went back and set it back into place but after inspecting the area, I noticed a lot of erosion ...
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41 views

Time it takes soupy soil to firm up

Just had a curtain drain to address yet another spring in our back yard that was causing dampness in the crawlspace. If I could bottle this stuff I might become rich! After the curtain drain was ...
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145 views

Cockroaches coming from floor drain in bathroom, way to prevent it?

Basically I have Oriental cockroaches coming from the bathroom floor drain. Now the floor drain is not really in use, as in there hasn't been water going in there as there is only a sink that works in ...
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55 views

Blocked sink, waste forced back when rodded

I drew a quick diagram here (you will have to forgive the crudeness): What started as a small blockage with slow draining has grown to be a near complete blockage. We put some water down and over ...