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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50 views

why is double plate necessary in this case?

I'm moving kitchen to the extension with 10.8' opening. the architect proposed double plate with king stud, jack stud and (3) 2x12 header but would not explain anything to me. the existing framing ...
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26 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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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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37 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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1answer
60 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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89 views

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
35 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
26 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
33 views

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

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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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
130 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
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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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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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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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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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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
74 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
30 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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0answers
27 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
52 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
27 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
22 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
37 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
39 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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0answers
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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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1answer
52 views

Can I dig a foundation below flood elevation outside the Floodplain?

Looking for answers from people building foundations near (not in) the 100 year floodplain. Does this trigger a floodplain build permitting process? Am I basically pigeonholed into a monolithic pour ...
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2answers
52 views

Foundation dimple mat with fabric or without?

It seems there are two main product types for house foundation dimple boards with fundamentally different approaches. A naked hdpe sheet where the dimple peaks are installed facing wall. Hydrostatic ...
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1answer
30 views

Contact cement for foundation dimple board

I have a cinder block foundation and plan on excavating to apply a 3 layered approach toward waterproofing it. Paint on asphalt sealer (aka tar) - Henry 101 Bituthene adhesive membrane (similar to ...
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1answer
32 views

Prepping sill for new granite steps

I am having granite steps installed. The platform will be 7" from the threshold but currently there is a 10" board sill/kickplate (white) with OSB behind it. I think the proper way is to ...
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Does FlexiSpan for foundation repair require an outside sealant?

I'm looking at foundation repair and Flexispan has been suggested. My driveway runs along the side of one crack and drains away from the house. Not much water gets into that soil. The other crack is ...
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1answer
60 views

Do I have a fieldstone foundation and if so, do I need to use Type O mortar?

I own a house that was built in 1890. The area of my foundation that I need to work on is an exterior section that is above ground. It is the part between my driveway and where the siding starts. I ...
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1answer
52 views

Concrete Footings for 16x24 log cabin

I am buildings a 16x24 log cabin in rural West Virginia. It will not have electric, running water, or any type of HVAC. One of the biggest worries I have, as I feel I should, is the foundation. I am ...
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1answer
73 views

How to excavate 3ft deep around perimeter of building

I have a building that I'm converting into living space for rental units. The building is on a cement slab foundation and to bring it up to code, I need to install foam board insulation around the ...
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1answer
62 views

Adding rat-slab to existing crawl-space

Unfortunately I have a rather persistent rat problem in my crawlspace and I still haven't been able to resolve it. I'm considering if it would be possible to pour a thin layer of concrete to stop ...
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1answer
36 views

Cracked grout and leak in shower side wall - short and long-term fix given foundation work?

There is extensive cracking in the grout along the upper portion of our shower side-wall, both inside and outside of our shower. We've also noticed a leak in the shower wall, likely due to the fact ...
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0answers
57 views

Cracks in bricks, needs foundation work or can it be watched?

This house belongs to my mother who is in her 70's. She already needs a new roof and is saving for that. As of now she can not really afford to fix foundation so I need honest opinions. Is this ...
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0answers
45 views

How can I Repair this Crumbling Concrete Foundation?

My 1919 home has a concrete perimeter foundation. I think it suffered some water damage at some point and the surface of it is badly crumbling. I think the deeper parts are still sound. I plan on ...
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1answer
46 views

Foam covering around foundation--what is it and can it be removed?

I recently moved to a new house. Portions of the foundation have some foam-like panels on top of it, in between the ground and the start of the siding. It's worn down, with holes in some spots, and ...
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2answers
76 views

Fixing gap under one side of a steel garage door

One corner of my new slab-on-grade garage foundation is 1.375" lower than it should be. My garage door is level, but as a result of the low corner, there's a gap on one side: The concrete guy has ...
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3answers
98 views

How can I modify this load bearing wall to allow for a French drain?

I have a basement wall made of block/poured concrete, but it's leaking. My plan is to install a French drain to take care of the leaks and prevent flooding. To complicate matters, this wall isn't ...
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2answers
104 views

Holes forming under/around garage

I've noticed two holes forming in the ground, under and around my garage (so no basement or anything under that location. The house is about 3 years old. The first is under driveway, just in front of ...
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0answers
12 views

What should I use to seal cracks between stone foundation and sill beam?

I'm in the process of replacing subfloor and joist sistering and noticed some pretty serious gaps between the foundation and sill beam after clearing away the loose debris between joists. Would it be ...
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1answer
50 views

What should I do about this bowing foundation wall?

I'm currently in the process of buying my first home, and I found a property on the market that was priced significantly less than most homes in the area. The seller's justification for this was a ...
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1answer
45 views

Seal concrete crack

My home is 60 years old and I am currently re-sealing my expansion joints with self-leveling sealant. This crack between the stairs (pier & beam foundation) and my walkway is a vertical crack as ...
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1answer
30 views

Poured door transition - Safe to dig around?

In the back of my house I have an addition that just sits on a perimeter foundation (no basement). I've got some moisture problems and some grading issues, so I'm putting a french drain around the ...

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