Questions tagged [structural]

Questions about the structure of a building (i.e. moving, adding or repairing walls).

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2answers
2k views

Ceiling cracks appear and worsen over weeks. Self repair or professional?

Background We recently purchased a home built in mid-50s. At the time, no structural movement or displacement was noted by the home inspector. Over the last few weeks, there have been long cracks on ...
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1answer
72 views

Pergola planning

I'm planning to build a relatively large wooden pergola of about 4 meters or 13 feet wide per 7.5 meters or 25 feet long. I'm not planning to add a roof or extra crazy load to it. On one end I'd ...
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1answer
593 views

How to cut floor joist for stairway headroom?

I live in an antique cape and we are having the stairs to the 2nd floor rebuilt so we will need more headroom. There is a floor joist that will need to be cut to make that possible. I'm trying to ...
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2answers
2k views

Converting closed tread stairs to open tread stairs

hopefully I'm using the right term. It might be called closed stringer stairs to open stringer (on one side). Please correct me so that I know the correct term for this. I also refer to it as "cut-...
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1answer
2k views

PO Drilled a large hole in a load bearing beam

I'm in the middle of remodling the 2nd floor of our 1955 cape. We found a place where the PO attempted to drill through one of the doubled up floor joists around the stairs. But its not a hole ...
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1answer
563 views

2nd floor bathroom floor is sagging with some water damage

Replacing tub and surround, I removed vinyl floor to find plywood tongue and groove decking with water damage. Cut out the damage to learn that the construction plumbers had cut the 2x4 top of floor ...
2
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1answer
395 views

Do these cracks indicate the foundation problem of a building?

while searching for a house to purchase, I found that there are some cracks under the window. Even though they have been fixed by the original owner. However, I am not sure how serious they are. Do ...
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3answers
2k views

Acceptable joist depth for a second set of ceiling-only joists

Background I'm installing a new ceiling in the kitchen of the bottom unit of a multi-family home. The house is quite old and uses 2x8 (actually 2"x7.5", not 1.5"x7.5", due to era of lumber) over a ...
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5answers
3k views

Can I build a car-port on the side of my garage?

I have a 2-car attached garage but three cars in the household. While I'm obviously aware I can just leave the third car in the driveway, it inconveniently blocks the cars in the garage and in the ...
2
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1answer
255 views

How can I fix composite deck railing that wasn't installed with brackets?

Had a contractor install a composite railing on my deck and he did not use brackets to secure the railings he just screwed it to the posts. This was 3 years ago, it looked great at first but, over the ...
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1answer
729 views

Floor joist attachment improvements in presence of existing ledger?

TL;DR: AFAIK there are no joist hangers that can be retrofit in a location where there's an existing ledger board without removing said ledger, right? Is there anything I should think about aside ...
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1answer
540 views

Proper backfill for a trench dug below foundation level (within the 45 degree cone of support)

Given a trench dug below foundation level, what's the proper way to backfill? Here I'm talking about a trench below the bottom edge of an unreinforced concrete foundation built in 1950, supporting a ...
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2answers
408 views

Are these foundation issues significant?

My wife and I are in the process of purchasing our first home. It is 8 years old. We have found one that we like, but I am a little hesitant about going through for two reasons. The foundation seems ...
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1answer
2k views

How would I replace 4 posts and beam holding my covered patio with 2 posts?

I have a covered patio that extends 10' from the house towards the yard/pool and has a width of 30-33'. The covered patio seems to be part of the roof, I even have access from the attic as we ran some ...
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2answers
4k views

Does this ceiling joist layout look structurally sound?

I plan on talking with an architect soon, but wanted feedback from this community too. Please see the attached photo. I'm in Raleigh, NC and am using information from this site (http://www....
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1answer
40 views

Hang punching bag in finished basement

I have a 40lb punching bag that I want to hang for kids but I want to do this in a way that I can upsize the bag as needed. My basement is finished, and I'm ok with cutting out some ceiling drywall ...
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0answers
41 views

Temporary supporting rafters in the middle for beam installation

I am intending to remove a load bearing wall that lies between the old perimeter of the house and the new extension. It is holding the extremities of the old roof rafters as well as a wall holding ...
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2answers
469 views

Wood creaking sound (intermittent, but persistent), how to finally put it to rest

So we bought a house built in 1986 last year. Over the past year, I've been able to identify a single (and I do meant SINGLE) knocking sound which generally repeats every 20-60 seconds until I go to ...
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1answer
443 views

Metal columns in basement span two beams

I am doing some renovations in my basement and noticed that the metal columns aren't centered on one main beam but centered on the gap between two beams. You can see it in the picture below (with the ...
2
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1answer
111 views

How to ensure all deck posts are sharing the load

I'm in the process of levelling my deck. Top down diagram below, showing decking perimeter (black), beams (blue) and posts/footings (red). Because of the irregular shape posts 1 and 3 are only 20" ...
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0answers
105 views

Will my garage truss and beam configuration be adequate for a room in the attic?

I am getting ready to finish some of the space above the garage and have some questions. I am located in Pittsburgh, PA. The garage is sloped on both sides down to the floor. I was going to utilize ...
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0answers
4k views

Do I need a header for an egress window?

I am in the process of finishing a bedroom in my basement. I need to add a window to the room and the selected wall is poured concrete. I need to know if I have to add a header above the window in the ...
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6answers
9k views

What's involved in moving a support post?

We found this house that we really like, but it needs substantial renovation for our taste. The thing that killed it for us was the crazy kitchen countertop that has been narrowed to make way for a ...
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2answers
164 views

How to reinforce bowing foundation?

Please note: I am obviously not a tradesman, otherwise I wouldn't be on this site asking this question. However, in five years of home ownership I have: re-roofed my garage, resanded all the hardwood ...
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2answers
77 views

The structural integrity of a backyard structure

I need a shed, but I really don't want to put a standard-looking shed. I would like something that's pleasing to the eye and fits my property. In addition, I thought it would be cool to have a second ...
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2answers
833 views

Fix wobbly storage shelf

I just built this storage rack for my basement out of 2x4s and plywood. It is relatively stable but does have some front to back wobble. More than I would like. Is there a way to increase the ...
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1answer
278 views

Do I need to replace these metal support posts?

I have these 3 permanent lally support posts in the basement: post #1 post #2 post #3 Closeup frame captured from video #1 Recently basement was flooded so I tore down drywall prepping things ...
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3answers
60k views

My 5th (top) floor apartment is shaking; what might cause this?

I live in a developing country (so don't have much faith in building codes), and have been experiencing increasingly noticeable and frequent "shaking" in my top fifth floor apartment. I'm seriously ...
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2answers
67 views

Is adhesive to sister a pressure treated deck joist necessary, and if so what kind?

My deck has a cantilever of about 4 feet from the girder to where the stairs attach, and the stairs tend to have a bit of a spring in them when you walk up. I want to solidify it a bit by sistering ...
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2answers
300 views

Cut Floor joists for HVAC

I own an old home, circa 1919. In the 70's, when the new furnace was installed, they cut through the floor joists to run the air ducts. Awesome. So in direct correlation to those cut joists, are ...
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2answers
3k views

Why are two columns holding up this support beam?

We purchased a new Ryan Homes house ten years ago and are now finishing the basement. Down the center of the basement ceiling is a large steel I-beam between the footers. Given the size of the house ...
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1answer
347 views

What was the purpose of this diagonal 2x2 along wall?

Local inspector passed me through insulation and I'm preparing to do the drywall. When I pulled the insulation wrap on the yellow insulation part, I noticed this 2x2 sticking out diagonally. For ...
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1answer
2k views

Is a sandwiched beam made out of 2x4s laid flat a suitable for a 15' span that doesn't carry a load?

After working to remove a wall that runs parallel to the ceiling joists, I've run into a little problem. The builder used a 2x6 for a nailer (to attach the ceiling drywall) on top of the 2x4 stud ...
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3answers
899 views

Cheap way to reinforce 1/2" Pipes

I used some 1/2" pipe (I got it at Lowe's; I think it's typically used for gas?) to build a simple frame for a heavy bag, essentially an inverted U (about 6.5' high, 5' wide), attached to wooden feet, ...
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2answers
940 views

Unsure about my structural engineer, can you check his drawing?

I recently asked my structural engineer to provide some calculations and drawings to remove the arch and further open up the opening between the double fronted sitting room of my 2.5 storey (2 at the ...
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2answers
187 views

Advice on supporting a sagging bay window

We have bay window that has sagged enough that that windows are out of square and no longer open or align properly to get a good seal. As such, they are drafty in the winter and we can't open them in ...
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2answers
23k views

What size beam should be used for a 15' patio cover span?

I'm looking into building a covered patio and am having a bit of difficulty finding the proper beam size required for the spans between posts. The cover will consist of either a ledger board attached ...
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1answer
948 views

Is this a load bearing wall? Please help

I have a commercial space I am working on and would like to open up the wall between two rooms its a single story building, flat roof, concrete flooring. one room is 400 sq ft and the other is 600sq ...
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1answer
164 views

How should I go about removing these two walls?

We just bought our first house, so go easy on me as I’m not an experienced DIY’er. I have read the documentation available on planningportal.gov.uk, but am still very confused. We’re hoping to remove ...
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1answer
179 views

Leveling the sagging side of the home

I am buying a home and one part of the home is actually visibly sagging. While looking at the crawlspace, I've noticed that some work was done to support the home. It seems like there is no new ...
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2answers
199 views

How to repair a beam of structured 2x10s

My house has a beam of 5 sistered 2x10s that are uneven. The beam has joists resting on top of it to support the floor, and joist hangers on one side to support a lowered room. Many of the members ...
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1answer
450 views

Split/broken rafters a concern?

I'm buying a home and had a building inspection yesterday. The only major defect the inspector found was two split/broken rafters inside the roof. Can anyone tell me if these are a major conern? ...
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2answers
489 views

Can hanging a 70 lbs punching bag from my garage ceiling cause damage?

Took a look in the attic above the garage to find somewhere to hang my 70 lbs punching bag. After seeing what was up there, I wasn't sure it was a good idea anymore so I was hoping to get some ...
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2answers
74 views

Replace steel suppost post with wood

We moved into a new build house with an un-finished basement. I am going to start finishing/framing the basement and 4 steel support posts that run down the center holding the beam. The main beam is 2 ...
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1answer
555 views

Ceiling mounted punching bag without compromising structure or floor above

This question is regarding the safest way of installing a heavy punching bag of 100 lbs from the basement ceiling. Above the basement ceiling is a wood floor. The goal is to sleep soundly at night ...
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2answers
468 views

Leveling a sinking 1st floor addition that is about 4' off the ground [closed]

First time home buyer looking for good advice about possibly raising a sunken 2 room addition ourselves. Wood frame, the sill is in good shape no rotting. No warping or "cupping" of the rooms. The ...
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2answers
129 views

Will supported 2x8s or unsupported 2x12s added to existing joists result in higher rigidity?

Background: I have a kitchen supported with 2x8s 16" o/c over a 13' 3" span. I want to install a 12x24 tile floor, so that much deflection is just not going to work. Question: I have 2 options I am ...
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1answer
4k views

Why are there cracks all over my upper floor ceilings and walls? [closed]

We bought a townhome in 2012 and we moved in. The walls were OK, no cracks except an oblique one near the vent in the bedroom. In the summer of 2014 the association decided to replace the roof. After ...
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1answer
3k views

cracks on both side of the bay window

my house is a typical semi detached 1930 house, there are two cracks on the both side of the bay window , they are roughly about 3-4cm wide, it was easy to filled it up with the mortar. the crack is ...
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1answer
832 views

Can I replace a floor joist cross-brace with two horizontal pieces of blocking in the same spot?

I am doing some remodeling and want to run a 6-inch HVAC (kitchen exhaust hood) duct through the floor joists. There is one section where the path is impeded by a standard floor joist cross-brace. Can ...