Questions tagged [foundation]

The base on which a house or other structure is built or installed, connecting the structure and transferring its load to the ground. Questions using this tag should include additional tags to identify the type or material of the foundation.

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12 views

Damp musty smell in house

We have lived in this house for over 20 years but for about the last 12 months we have had a musty smell in the hall and kitchen which are at the front of the house. We have checked the roof, mains ...
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56 views

How level is 'good enough' for a 8x14' shed's gravel foundation?

I built a gravel foundation for an 8x14' prebuilt wooden shed. I spent a lot of time addressing drainage and most aspects of the foundation. Now it is finished, I think, but I want more experienced ...
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42" Elevated Foundation Build in Coastal NC

What are the best practices for residential elevated foundation 42" construction in Coastal NC? I have read alot about: soil tests, compacted fill, 4" of gravel on top of compacted fill, ...
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38 views

permanently closing off a crawl space under a house

I have a old small house that that was built in the 60s above ground with a dirt  crawl space underneath. There are two  access openings on each side of the house 28 x 18. There is no need to crawl ...
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47 views

Foundation Crack and Severity

My wife and I recently completed a house inspection. A little on the house: it was built in the late ‘40s, the grade is excellent and has been built up around the entire house, the drain spouts do not ...
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53 views

New house concrete slab foundation cracks - TX

I'm asking about advise\idea\help. I'm new home buyer in Austin area TX. I bought a new home in the foundation stage. Now it's in the framing stage. Yesterday I found that I have 3-4 cracks on the ...
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60 views

Should cracks and water in the crawl space concern me when buying a house? [duplicate]

I am looking at a house that with a crawl space (see image). The crawl space has the full height of a basement, windows and a door leading outside in the back. It has French Drains along the downhill ...
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2answers
54 views

Are water and vertical cracks normal for full height crawl space? [closed]

I am thinking about purchasing a home that is set on top of a crawl space (see image). The crawl space has the full height of a basement, windows and a door leading outside in the back. It has French ...
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58 views

Replacing a full height crawl space with basement

I am thinking about purchasing a home that is set on top of a crawl space (see image). The crawl space has the full height of a basement, windows and a door leading outside in the back. It has French ...
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1answer
33 views

Best and easiest way to seal insulation above concrete pour in unfinished areas of basements? [closed]

One of the things my crew is doing is trying to quickly make unfinished areas in basements look nicer and easier to clean. We usually stuff all outer joist walls with roxul to insulate and while this ...
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Can I run an underground wire to a shed on blocks?

I have a 12'x16' shed which has been leveled using concrete blocks but otherwise sits on the grass/dirt. It's about 100' from the house. I live in Georgia. I'd love to add some lights and outlets ...
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112 views

Did I severely compromise my foundation by drilling diagonally through a floor joist?

I’m boring some holes to run new wiring and there happened to be two adjacent floor joists under where I was drilling, so I drilled diagonally-vertically through one of the joists. The hole is 3/4” ...
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29 views

Shed on concrete pier blocks - how to brace laterally?

I'm building a shed on concrete pier blocks (12x12, 50lb), on 4x4's on adjustable support brackets. How do I laterally brace the structure using this? Is there a size threshold where I don't need to? ...
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How to fix crack in slab foundation wall has 90 degree turn to horizontal below the surface?

First, is this 90 degree switch from the vertical wall to horizontal bottom a normal feature of slab foundations? This is a 1953 ranch in northern Ohio. Red arrow in photo indicates the turn to ...
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Why is there a hole in my slab?

We had a leaky pipe burst over the weekend. It seems that it had been leaking (slowly) for some time, so there's some water damage to the wall where it was located. In order to clean it up, I removed ...
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68 views

Can I put crushed stone on top of sand base for brick patio?

I have a brick patio that is not level and filled with weeds. There are areas where it slopes down and the back up. I live in Maryland so it can get really hot and cold but I have not seen other areas ...
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Leaving basement forms on permanently

I am having an addition built on my home with ~600 square foot basement underneath. Because one of the basement foundation walls is very near (~1 foot) from the original home foundation, the concrete ...
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1answer
48 views

Paver Patio with Backfill Settlement Around Block Foundation

Main Question: I've been told that a concrete skirt (8" sloped pad) below the frost line and attached to the foundation via rebar is a good solution for putting pavers next to a block wall ...
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45 views

Filling gaps in a concrete floor

Our 1950's brick two story, three bedroom with a basement is a pretty common type around Toronto. We're doing some demolition and cleaning up in the basement. We are fairly sure we want to sell; our ...
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2answers
59 views

Unfinished basement - options for exposed concrete wall in finished room

We're purchasing a home with a large, unfinished basement having a poured concrete foundation and walls. This home is in Minnesota, so there's a seasonal consideration with temperature and moisture. ...
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Fireplace mortar cracks

I have a large crack where the fireplace hearth meets the chimney. I’m curious if this is a foundational problem, and if it needs to be repaired by a pro, or if I should just use a sealant repair ...
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1answer
28 views

calculating screwpiles requirement in clay ground

Does anyone know a good way of calculating screw-pile requirements in clay ground? I'm in the Netherlands and this old seafloor so carrying soil type is going to be at least 10m deep before it there ...
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2answers
65 views

Correct way to fix a broken block in a cinder block foundation

I have a 1954 built house with a cinder block crawlspace foundation with about a 1 1/2 foot clearance. I can squeeze in, but not easily. I'm in Cleveland, OH, so there is definitely a freeze-thaw ...
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45 views

Repair Hole in Cinder Block Foundation

I had a geothermal furnace put in recently, and with that, the old heat pump was removed. The electric from the heat pump was run through a hole through the foundation to the panel. The hole is about ...
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276 views

How to seal around metal gas pipe penetration through poured concrete above ground?

I have a gas pipe that comes through my poured concrete foundation about 12 inches off the ground: It is not sealed around the pipe on the outside. The gap is definitely large enough for insects to ...
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Strange concrete pad ringed with bricks in basement

I'm developing a Victorian flat (UK) the moment and there's a room that I wanted to clear out but there appears to be a load-bearing support beam with a concrete support pad at the base...I'm ...
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1answer
54 views

Necessity/value of using cardboard or weed barrier under gravel shed foundation?

How important is it to use a weed barrier or some kind of geotextile between gravel and ground? In cases when crushed gravel is poured and tamped 6" deep as a shed foundation, on relatively flat ...
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1answer
41 views

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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1answer
53 views

How many concrete piers do I need to support a tiny house (12x28 and 20feet high) [closed]

I need help, I am building a tiny house, I am not sure how many concrete piers do I need for a 12x28 tiny house and that will be max of 20 ft high thank you!
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1answer
17 views

Best way to fix gate post over foundation that extends

1930s brick house. Foundation at ground level extends 8 inches out. Want to put a 3.5 x 3.5 post right next to the wall and have these ideas(post will have gate latch): Build a form next to wall that ...
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1answer
53 views

Best way to support walls of existing wooden outbuilding

I have been digging out the floor of a wooden outbuilding on my property, to prepare for laying a new concrete floor. The walls of the building have been built on top of old railway sleepers that were ...
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1answer
356 views

How to seal a pipe pass-through in a basement wall

My house is 15 years old, and ground water has suddenly started to leak into the basement around a pipe that passes through the poured concrete foundation. The method of installation complicates the ...
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1answer
49 views

Crack in concrete floor slab

I recently pulled up carpet/padding and discovered a foundation crack. It looks to be larger on one end. It appears to be slightly horizontal, about less than 1/2 inch at it's largest end. The ...
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Yellow mesh material in slab foundation cracks

We recently purchased a home in central Florida, built in the late 80s, a stick-built home on a concrete slab. Today I noticed a small uplift and depression through the carpet. Touching the carpet, ...
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1answer
42 views

Wood siding rests on concrete pad. What are the alternatives?

In several areas around this house (a ranch on slab), the clapboard siding comes right to concrete walkways, resulting in peeling and rot. Short of ripping out the concrete, is there a less ...
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35 views

How do I design a foundation that will be frozen and thawed yearly?

I currently have a 12x12 insulated shed on slab on grade. I use it to store seedlings during the planting season. I pre-chill the room by opening it in winter and using a box fan to circulate air ...
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63 views

How can I fix my leaning garage wall

The gable wall in my garage is leaning. The sill plate seems to have slipped off the foundation. The sill plate is broken and the lower end of a stud is missing around where it's broken. The ...
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49 views

Is my foundation design for this garbage can hutch overcomplicated?

I am looking for feedback on the plan for a hutch I want to build for my garbage cans and table saw. I plan to have it sit on a slope next to my driveway. I’ve used a deck planning tool to guess at ...
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49 views

How to level a sloping concrete slab with a 2” difference?

I know this sounds bad and I need to give some backstory to not sound off the alarms... I’m going to give the main question first and then backstory below so you know I’m not crazy. Question: We have ...
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2answers
76 views

Cracks in new house concrete foundation

I am buying a new home. The foundation was poured in Sept 2019. The home is nearing completion but the floors have not yet been installed. I see cracks in the foundation. Most concerning are two ...
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1answer
54 views

How to determine if damp smell, marks, cracks, mould, on internal walls is from; rising damp : condensation or other

I live on the ground floor of an art deco complex, with 2 apartments above me. We have lived here for almost 13 years and have never had a problem with damp / mould issues....other than our bathroom ...
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29 views

What is an appropriate log cabin base depth?

I'm currently in the process of building the foundations for a 5m x 3m log cabin, using sand/cement with a 32mm layer of paving slabs. In accordance with the Tiger Sheds website I am laying down 40mm ...
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1answer
54 views

Why is my cement cracking near the wall?

I have an old barn/garage that has mason block walls. The entire foundation is a concrete slab with footings for the exterior walls. For some reason, about 6 inches from the exterior walls, the ...
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1answer
51 views

Have water seepage in basement bedroom of 5 year old home, still under home warranty

I have a rental property, about 5 years new. The basement is half underground, ground is level, not sloped. Tenant has been noting that there is slow water seepage into their bedroom floor from the ...
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2answers
33 views

Exterior foundation drain pipe location relative to the footer

Our house—built in 1989 in the Kansas City, MO area—has a walk-out basement with exterior foundation drain pipes daylighted. The drain pipe on the east wall had a complete blockage, so I dug it up in ...
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1answer
23 views

Which foundation type for conservatory?

I live in a new property where due to the underlying characteristics of the land, piling was required for the foundations. Due to the additional cost, I'd like to explore what options for extension or ...
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1answer
40 views

Hydro isolation for foundation cut out (edge, not face)?

I live in Europe with a house constructed out of perforated bricks. I have sub grade basement windows. Our home inspector pointed out that the foundation edges exposed by the window channel need hydro ...
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1answer
41 views

Drilling into foundation form ties

I am in the midst of waterproofing the interior side of my basement. I have many leftover form ties that I've cut off flush with the concrete. The ties originally looked like this: My waterproofing ...
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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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4answers
79 views

Ideas for making a backyard fort moveable

I'm in the planning stage of a backyard fort similar to this, standing on six 4x4 posts with the floor roughly three feet above grade with far more structure than the linked example. Since this thing ...

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