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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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Uneven floors from settling rim joist

We're trying to fix the uneven floors in our 850 sqft, 80 year-old house in San Jose. Our contractor opened up the floors and the problem appears to be that the floor joists rest on a skid, while the ...
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Shed foundation out of square

I had a builder put up a raised 10x13 post and beam foundation in anticipation of a shed placement later. I measure it and find the diagonals are 4" off. What is the easiest way to adjust the rhombus ...
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46 views

Clay and Gravel Liquefaction for Paver Installation

I have recently started digging and laying the base for a patio with pavers. Its roughly 300 sqft and the soil is made of clay. I dug around 7" deep to have 4" gravel layer, 1" sand an 2" for the ...
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Can this water damage be explained by lack of gutters and grading issues?

We are currently midway through a major renovation to an old house. Part of the renovation was digging out a new basement and adding a new foundation around it. The basement has a ceiling height of ...
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101 views

Is channel in basement standard design?

Determined this is a 4 inch slab on top of original slab. Possibly with internal drainage channels from center of basement to edge, where it runs to pictured channel and sump pump. House has channel ...
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1answer
55 views

How to fix leaks in concrete and steel bulkhead

I have a bit of an urgent situation forming. I recently purchased a house that's 55 years old, with "no history of basement leaks." Long story short - my basement flooded yesterday during a small rain ...
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42 views

Are foundation cracks something to be concerned with?

I bought a house in 2017 that was built in 1998. The previous owner had notified me of two foundation cracks that he had repaired from the interior (epoxy injection). In February 2019 (second winter ...
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1answer
98 views

Foundation concerns with 40 year old home

I just purchased a home built in 1978 (I literally moved in last weekend.) This is my first home purchase, and I tried to do as much research as I could -- I had it inspected, and the inspector found ...
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68 views

Concrete sinking in front corners of attached garages

I was looking at buying a house and the concrete in the garage sunk about 2" on each front corner, leaving gaps under the garage door. I then realized that at least 5 houses on the same street had ...
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1answer
28 views

Wet blocks AFTER French drain and weep holes

I had water leaking in my cellar from bottom of floor. Water was NOT on blocks at all. Now after French drains and weeping holes put in, the cinder blocks along the bottom of floor are wet. Will this ...
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1answer
38 views

We noticed a small puddle in the basement due to melting ice but it has not happened since - should I still replace patch on foundation wall?

We noticed a small puddle during a warmer period last week and traced it back to the foundation wall. I removed the drywall and insulation (it was only on top half of wall) and found that the previous ...
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Digging along side of garage footer

I want to remove a deck from the back of my garage and drop the area to be level with my pool patio. I’m thinking maybe 20-30” would need to be removed and I would be below the exaisting footer... I ...
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What inspector can help us evaluate popping noises in ceiling and walls?

We live in a small (1,500 square foot), one-floor, old (most of it 65 years old, some of it 30) house just south of San Francisco. We've lived here about 25 years and the last few years we have heard ...
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1answer
41 views

Post and Beam sizing for 10x10 shed workshop?

This is probably a common question, but trying to sort it out has my head spinning.... I'm trying to work out the size of a post and beam foundation for a 10x10 shed I plan to use as a workshop. ...
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1answer
161 views

Will the concrete slab in a partially heated shed conduct a lot of heat to the unconditioned area?

I have a barn-garage type outbuilding (I believe it was a small barn originally; it has that kind of tall, roomy upper loft). It's about 40 by 20 feet. It's got a concrete foundation and the lower ...
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1answer
64 views

Does the UFER Ground require to be visible?

Is there something on the NEC code that states the UFER ground needs to be permanently visible? I had my rough in electrical inspection the other day. He stated that per NEC 250.64(E) (1), I have to ...
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1answer
42 views

Cracks up wall in corner of room

We recently did a comprehensive remodel of our very old condominium. Its a four unit row house from the 1890's. I noticed that there is a long crack going up the corner of a back room. Is this a ...
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1answer
51 views

What's an easy way to build a level 6'x4' platform over uneven indoor floors?

I recently moved into a guest room that has uneven floors. There is a one degree slant over the entire room and some of the tiles are higher and lower than others. I'd like to set up a 6x4 platform ...
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31 views

Cutting out beam pockets

Guys that were pouring concrete did not form beam pockets so now i have straight walls with no beam pockets. How can I possibly cut the beam pockets out now? I believe the size is 8 1/2 by 12 1/2.
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3answers
343 views

Large concrete patio poured against the foundation - should it be tied to the foundation or not?

Over a year ago I had a large concrete patio (24' x 26') poured. This concrete patio butts up against the foundation of our home. I'm unsure if it was tied into the foundation of the house or not, ...
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21 views

Tree vs drainage foundation issue

I have been seeing expanding cracks around my home and slowly widening cracks in my foundation. I had three foundation companies look at it and all three said different things. Excavate front of house,...
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26 views

Supporting a leaning foundation

The walls in my foundation were built a tad crooked in the 60s and have gotten worse, likely due to non existent gutters before I bought it. I've been here 2 years and it hasn't gotten worse. The ...
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2answers
85 views

Help needed identifying major structural issues

So here's the low down: Bought a home about four months ago. Inspection made no mention of any cracks anywhere, and honestly didn't even mention a single thing about the foundation (probably a big ...
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21 views

Solutions to porous foundation?

One person was inside the crawl space under the house after dark to observe, one person was outside shining a bright light towards the crawl space, at ground level. The person on the inside saw the ...
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1answer
44 views

My basement wall is adjacent to a filled foundation. Is there any point in insulating?

I was planning on putting foam board insulation on my basement walls before finishing. Then I realized that on the other side of the wall isn’t earth, but a poured foundation for my covered porch. ...
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36 views

Wall sill plate not in contact with slab, is it fixable?

I own a house with foundation issues. The actual movement of the foundation has largely been stopped, because piers were installed underneath the area of the foundation that was sinking. This seems ...
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Do I need to vent a crawlspace?

We just completed a 20x20 great room addition on the side of our house with a 4 foot crawl space and poured concrete floor. There is a 4’ by 4’ cut through to access this crawl space from the existing ...
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2answers
258 views

Sleeve for below grade pipe penetration

I need to run a hot and cold water supply line to an outside structure 13' away through my basement block wall. This is in the Northeast US, where the frost line is 42" and the penetration will ...
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1answer
69 views

Medium-term repair for spalled foundation with exposed mudsill

I have an old house (built in 1946) near the ocean. The foundation in the back has spalled off, exposing the mudsill in some places. The worst spalling is 4" deep - you can see the mudsill and a few ...
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1answer
34 views

Least invasive way to find foundation footings under basement slab?

For a 100-year-old brick house (two-flat) in Chicago, I'd like to find my foundation footings so that I can plan in-floor heating. What's the least invasive way to do so? I'm imagining drilling ...
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2answers
323 views

Pier foundation and water table issue

I am in the process of building a small (14x14) log cabin in the woods on a pier foundation: After marking the perimeter, I began excavating the soil and dug to below the frost line (36"). The plan ...
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2answers
60 views

Why do foundation bolts at corners deteriorate faster?

I replaced the washers on a house's foundation bolts (replacing old round washers with larger square washers). On 6 of the ~30 bolts, the nut was rusted in place and the shaft was eroded where it ...
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1answer
50 views

J bolt protruding through wall

We have a j bolt protruding through the wall of our concrete foundation after only 1 year. What is code for fixing this. According to our builder the steel isn’t needed and they can just patch the ...
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2answers
53 views

When calculating rebuilding costs for insurance purposes, should foundation replacement be considered?

In this question I asked at what temperature a foundation becomes unusable for rebuilding purposes. The answer was a fairly low 570°F (~299°C). A house fire that burns a structure to the ground would ...
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1answer
55 views

How can I repair the foundation and plaster coating in my old home's foundation?

I have a house which was built in 1890 in western michigan. The house is a fieldstone foundation. It appears at some point it was plastered or covered. On the west side of my basement there also ...
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221 views

In a house fire, how hot does the foundation have to get before it too has to be replaced?

Not long after the Oakland Hills fire in the early 90's I was talking with a homeowner. I ignorantly said that at least he can still rebuild on the same foundation. He said that at about 2,000°F the ...
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2answers
373 views

Best way to parge exterior stone foundation wall

I have a 1894 house with a stone/rock wall (limestone I think). The foundation is in decent shape for the most part but I would like to parge the exterior visible portion to give it a more modern look ...
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58 views

draining sauna into crawlspace

I'm thinking of setting up a drain from my sauna through the floor of my house into my crawlspace. Practically speaking, would this damage the house?
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What type of foundation is best in an area with silt loam soil, cold climate, and high water table?

I'm in the initial stages of planing a structure build, I say structure because what I'm really looking to build is an off grid ( no running water or sewer for staters ) vacation cabin on apiece of ...
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2answers
58 views

Determining if a foundation is moving or shifting?

I am finding circumstantial evidence that leads me to believe that my house is settling from the foundation moving or shifting. I've found brand new grout done by a professional cracking after a ...
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Option to strengthen foundation with posts around perimeter?

We are in earthquake country (Oregon), looking at seismic upgrade on our foundation, which is 115 years old and in dubious condition. Are there options for strengthening a dodgy foundation by ...
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1answer
97 views

Help me figure out my wood shed foundation!

I recently bought a house that already had a (~2 year old) 12ft * 10ft shed in the backyard. Currently the shed just sits on some gravel. I plan on turning the shed into a 2 room sauna/changing room ...
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1answer
37 views

seismic upgrade - verifying foundation integrity

We want to do a seismic retrofit on our foundation. House built in 1904. No cripple wall. Mud sill with rim joist. Foundations have a recent skim coat (that we did not do). Concrete slab. So the ...
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2answers
42 views

Span between wood post for stilt cabin

I intend to build on Weiss Lake in AL. If I use 8x8 posts, can I span 10 ft with 2x10 or should it be 2x12 for the floor joists? Also was wondering for the foundation can I just sink the wood post or ...
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drywall gap again after foundation repair

My foundation (crawl space) was repaired recently, huge job, home not level. There had been a gap in a corner where the sheetrock had dropped down but that side (plus adjoining 90 degree) was reframed ...
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3answers
49 views

Gap between foundation and wrap

I recently purchased a new house in Ontario, Canada. The grading will be completed in the following months. During a walk around the house, I noticed gaps between the foundation walls and the ...
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1answer
171 views

Do I need to add supports before replacing a cripple wall stud?

I have a section of mud sill near a crawl space entry door that has suffered severe dry rot due to rain intrusion. I need to cut out and replace about 3 feet of mud sill. This will require removal ...
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1answer
52 views

How to apply rigid foam insulation to foundation with epoxy plugs?

The previous owners of our home did a foundation repair to fix two large cracks about 10 years ago (it is covered by a lifetime warranty). The repair was very successful, but the epoxy plugs remain. ...
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How to brace misaligned support post?

Recently purchased a new home, and after removing the builder insulation blanket we discovered that one of the support posts has become (or always has been) misaligned and isn't resting on the beam. ...
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Preparing for shifting

One concern for any new construction is shifting, which happens most immediately after a building is erected, but all buildings will shift and lean gradually over the years. Even if a building's ...