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Questions tagged [structural]

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

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82 votes
12 answers
70k views

Is there a case where nails are better than screws, from an engineering/structural standpoint?

Is there a case where nails are better than screws, from a structural standpoint? For instance: Say you used screws instead of nails on a backyard deck, when the design specifically called for nails. ...
Chris W. Rea's user avatar
  • 1,495
50 votes
4 answers
51k views

Are there ways to determine if a wall is load bearing?

Other than looking up blue prints, which many homeowners may not have, are there ways to determine if a wall is load bearing? Methods I can think of might include: Going up in the attic to check if ...
Doresoom's user avatar
  • 15.8k
43 votes
10 answers
26k views

Are gaps above and below framing members a concern?

I recently hired a framing crew to frame a new house. After it was done, I commissioned an independent review. The reviewer described some of the work as "shoddy," and pointed out a lot of gaps, ...
Alaska house's user avatar
32 votes
10 answers
30k views

How do I stop a creek from eroding my steep embankment?

Behind my house there is a very steep bank/slope that leads down to a decent-sized, slow moving creek about 10 - 12 ft wide. Unfortunately it meanders right behind my property at the base of this ...
hotmeatballsoup's user avatar
30 votes
3 answers
5k views

Is this a load bearing column?

I’m trying to determine if a column in my house is load bearing. It’s at the corner of 2 pony walls and if it isn’t we might take out the column and the pony wall. There’s an extension of the 2nd ...
StockTsi's user avatar
  • 303
29 votes
5 answers
47k views

Is it unsafe to remove one stud from a load bearing wall?

I need to cut a hole for a recessed medicine cabinet. This wall is at the end of the house. I only need to cut one stud to make a frame for the cabinet. Will this damage the integrity of the bearing ...
Sonia Leon's user avatar
28 votes
1 answer
5k views

Seemingly overbuilt basement wall - load bearing?

I'm doing some prep/exploratory work before I begin finishing my basement. Home was built in 1980 and has a cement block foundation. There is a seemingly random wall framed in the otherwise unfinished ...
cxd213's user avatar
  • 423
26 votes
3 answers
8k views

Diagonal brace left in the basement by builder. Can I remove it? Replace it?

I have a diagonal brace running across an interior wall in the basement, and it even goes partially into the floor concrete. Is this meant to be permanent, or was it supposed to be removed during ...
Egor's user avatar
  • 521
25 votes
1 answer
24k views

Is my rapidly failing foundation dangerous?

I'll be succinct. I'm afraid we're having a full structural failure. Over the past week, crack after crack has been appearing in our plaster and walls. I'm honestly concerned for our safety. Our ...
Slytherincess's user avatar
21 votes
3 answers
29k views

Is notching a flange on an I-Joist ever acceptable?

My home builder said that the following notch in a flange on an I-Joist was acceptable, but I've read that you're never supposed to do so. Is that true?
gibbo's user avatar
  • 313
17 votes
5 answers
15k views

Is it safe to screw into a single support beam holding up an entire house?

I have a (roughly 40 year old) house with a crawlspace, and then an upstairs above it - I believe this considered a 1.5 storey house. The upstairs is being held up by a long wooden support beam, and ...
Smith99's user avatar
  • 171
17 votes
1 answer
3k views

Is a main beam being held on by an angle iron a safe construction?

Some background: previous owners poured a new foundation and moved the house over to the new basement about 14 year ago. I've been in the house about 8 years and just noticed today while starting to ...
Christopher C's user avatar
16 votes
4 answers
5k views

Can I cut the small tab off of these rafters to make drywalling easier

I am finishing my garage and I have come to the point I need to start drywalling. I ran into a roadblock and would like to get opinions on how to proceed. The roof is a pyramid shaped hip roof and ...
Yamaha32088's user avatar
15 votes
5 answers
105k views

How do I improve Pergola Stability?

The deck is nearly finished but I have a small structural problem with the pergola. A left or right force near the top of the pergola (such a a tall person leaning on the post) leads to a bit of ...
Chris Cudmore's user avatar
14 votes
2 answers
4k views

Should I be concerned about the structural integrity of this 100-year-old garage?

I had an aunt who lived in a house that was built in 1923 and its detached garage was also built in 1923. I am in the process of fixing up both this house and the garage before the house is put for ...
user57467's user avatar
  • 243
13 votes
3 answers
4k views

Is this deck post getting cracks due to it being overloaded?

I never seen such types of cracks online. Is this particular post overloaded. There is nothing on the deck. Also another closest post set 10 feet away. Any idea
PowerTech's user avatar
  • 786
12 votes
3 answers
3k views

Can I hang a swing from manufactured "I" joists made of wood?

This is a picture of my ceiling. I would like to hang a swing that will hold an adult. I'm not constricted for space, so I could attach directly to one of the 2x2's
Caitlin's user avatar
  • 121
12 votes
1 answer
9k views

Can I raise a sagging shed roof by winching the walls back into place?

TL;DR Can I fix the sag by slowly jacking up the ridge, simultaneously tightening some steel cables attached to the top of each wall? Measuring between the top of the wall and the top of the ridge, ...
3Dave's user avatar
  • 237
12 votes
1 answer
5k views

How do I know if it is safe to remove a wall?

When looking at a wall, how can I tell if I can safely remove it?
Walker's user avatar
  • 6,239
11 votes
2 answers
11k views

Is joist sag at connection with header a problem?

I am having the ceiling in the finished part of my basement redone, and have it fully open now. I can see the connection of the joists to the headers have given somewhat, as the house is 85 years old ...
Paul D's user avatar
  • 497
10 votes
6 answers
11k views

Are these integrated diagonal wall braces structurally important?

I was helping a friend expand the width of a closet door, and when we pulled the drywall off the interior wall frame, we noticed some diagonal wall braces in the interior wall. I am pretty sure they ...
TylerH's user avatar
  • 1,076
10 votes
3 answers
52k views

How can I choose the best lag screw / lag bolt?

I will be fastening Unistrut vertically along studs to facilitate garage storage, and want some guidance on choosing the "best" lag bolts to use. I want them large enough to handle hundreds of pounds ...
Billy left SE for Codidact's user avatar
9 votes
4 answers
2k views

How can I locate a shower valve in a load bearing wall?

I have gutted my bathroom down to the studs, and I want to put a shower mixing valve directly where the red X is. The problem is that board outlined in red is load bearing for the staircase landing ...
ACD's user avatar
  • 310
9 votes
1 answer
4k views

How can I safely remove and replace a wall?

The Wall: This is about 25' long, and it separates my kitchen from my living room/Dining room. Underneath it, we have a double 2x8 floor joist, which is supported midway on an 8 inch steel I-beam. (...
Chris Cudmore's user avatar
8 votes
5 answers
7k views

Can I put a 6" hole in this ceiling joist?

I'm working on my kitchen to add a range hood that goes outside the house. I'm putting the 6" exhaust pipe in my ceiling, between my 1st and 2nd floor, going in the direction of the ceiling ...
Guj Mil's user avatar
  • 194
8 votes
4 answers
2k views

Repairing a partially cut roof strut

It looks like some previous owner of my house (built in the 40s) cut almost the whole way through a roof strut (I think it's called a strut) when installing an attic ladder in the garage. I am ...
Pete Baughman's user avatar
8 votes
1 answer
2k views

Long crack in I joist flange

Found a nasty crack in one of our I joists and need advice. Should I get a structural engineer over here asap or try to repair it? It’s over a foot long. Our shop was built in 2020, so I’m surprised ...
Bdport's user avatar
  • 81
8 votes
2 answers
4k views

Structurally required? I-beam support under stair opening header

The stair opening into my basement is framed like this: A partition wall (non-load bearing) sits on top of the header. A square duct runs parallel to the header, and on the other side of this duct ...
jmvincent's user avatar
  • 113
8 votes
1 answer
35k views

Is my attic floor over my garage strong enough to use it for storage and maybe as a small work area?

I would like to use the attic space above my 2-car garage for storage of items around the house and garage, and if possible, utilize some of the space as a small work area. The previous owners left ...
Al Schuppe's user avatar
8 votes
1 answer
35k views

Can I safely make a door frame taller?

UPDATE: April 22 What I ended up doing was removing the trim non-destructively. Above the door frame, it was clearly not load bearing, so I continued and was not so non-destructive. The end-result ...
Scribblemacher's user avatar
7 votes
5 answers
13k views

Repairing a notched floor joist

Situation I was running some new gas pipe and I notched one floor joist and drilled a hole in another. I have now learned that this is not appropriate. This was in the forbidden zone of the middle 1/...
Peter's user avatar
  • 191
7 votes
1 answer
2k views

What are these horizontal boards screwed to my garage wall studs?

I've decided to do insulation in my garage and am confused by these random seeming 2x4s that are screwed to one wall. Any structural reason they are just in that spot? Two car garage, and on the wall ...
Dan's user avatar
  • 73
7 votes
2 answers
9k views

Closet Wall, is it Load Bearing?

Trying to figure out if the front wall of this pantry cabinet is load bearing. We'd like to remove the front of the pantry and install cabinets here instead of the closet, but unsure if we can pull ...
Sam K's user avatar
  • 71
7 votes
1 answer
2k views

Who would I call to inspect the integrity of a truss after an electrician cut into it?

I hired an electrician to install recessed lighting. They chopped away wood at the chord tie beam just above 4 of the lights. They also cut into the chord tie beam with the hole saw on a few other ...
Robert's user avatar
  • 71
7 votes
2 answers
6k views

What are these beams for in my loft?

I have very good building experience but in a house we bought recently I have been wondering what the heck to do with my loft. Initially its converted to a mini workshop / storage The max height is 1....
Piotr Kula's user avatar
  • 5,889
7 votes
2 answers
19k views

Is my closet load bearing?

I want to remove the closets that are in the hallway off of my garage so I can install new cabinets for a mud-room. I want to make sure the closets are not load bearing before I remove. Here are some ...
Brett's user avatar
  • 71
7 votes
2 answers
2k views

Holes drilled in parallam beam: is this a structural problem?

The electrician drilled 3/4” holes on PSL parallam beams. Both beams are is 4”x12”. The first beam measures 13’ft long and the holes are about 3’ft away from the end. The second beam measures 23’ft ...
Luis Contreras's user avatar
7 votes
3 answers
41k views

What size ceiling joists and rafters should I use for a 14' span?

I'm going to build a single story addition to my home with a width of 14ft. I plan on using ceiling joists every 16" but I'm not sure which size to get. The roof will be asphalt shingles and the attic ...
Rich's user avatar
  • 71
6 votes
3 answers
3k views

Is it safe to remove screws from a 4x4 support beam without compromising it?

We have a home with a basement which has one room containing a 4x4 beam in the ceiling. Yesterday I screwed more than ten 2" #6 and 3-1/2" #10 screws into the beam for a project I was ...
Helixdnb's user avatar
6 votes
1 answer
3k views

Is it okay to notch 1.5" on the bottom of beams in basement ceiling [duplicate]

I have a 100 year old city rowhouse and thinking to finish the basement. I have cleared all the dangling electric cables and rerouted the water lines the attached to the ceiling beams. All I have ...
ecco88's user avatar
  • 564
6 votes
1 answer
1k views

How should I deal with this protrusion in future drywall ceiling?

I am strapping a room up for a drywall ceiling for an upcoming room in my basement. The joists are level for the most part, but on the main joist there is an protrusion. Here is a picture: The ...
PaulG's user avatar
  • 333
6 votes
3 answers
2k views

How much space do you need between windows for a king, jack and hardwired light?

We are remodeling our kitchen and putting new windows in. It will be a bank of 3 windows. We plan on doing a king & jack in between each window (to not have to do one very long header). I would ...
Dinisha's user avatar
  • 61
6 votes
1 answer
3k views

Should I replace a carport post as it was originally built or with an upgraded column?

I’ve got a 60s era carport with a rotted post. It’s a low slope cantilevered roof about 20 feet long. It has two posts on each corner at the front, and the back is supported by the house. The rotted ...
monknomo's user avatar
  • 161
6 votes
1 answer
569 views

Rafters pulling apart from center support

Some of the rafters are coming apart in my attic. What is the best way for me to resolve this issue? Please note that a new roof was just put on over the problem. The roofer assured me that he would ...
RogueJax's user avatar
6 votes
2 answers
28k views

When sistering a joist or rafter, must the ends of the sister be supported?

When sistering a floor joist, must the sister be full length to the original joist and must the ends of the sister be supported on a sill or beam for the sister to be truly effective? Assume the ...
user avatar
6 votes
3 answers
2k views

Can I partially suspend an angled climbing wall from my garage trusses?

I'm planning on building a home climbing wall in my garage. I'm wondering about the structural integrity of attaching it to the trusses. They are 2x4s, 24" apart, and span about 30 feet. This image ...
Philll's user avatar
  • 61
6 votes
1 answer
450 views

Designed a floating corner table, unsure of its potential strength. Any ideas?

I pretty much want to attach some angle iron to the studs and some threaded rods to the angle iron. I'll rout out the profile of the angle iron into the butcher block so it sits flush and so that when ...
kavisiegel's user avatar
  • 2,276
6 votes
4 answers
2k views

What should I do about these broken beams and broken floor joists?

My house was built in 65 and we bought it a few years ago. I've been slowly fixing things as I can, like the giant rats nest of electrical wiring strewn about the attic :). Now I want to get to these ...
Some Hardware Guy's user avatar
5 votes
4 answers
7k views

Extending Framing Studs From 8' to 9'

Well, I feel about as dumb as I possibly can right now, but I measured the ceiling height from the wrong point and purchased studs thinking the basement had an 8 foot ceiling, only to realize ...
senfo's user avatar
  • 429
5 votes
4 answers
2k views

Are these roof members structural support?

I’m fairly new to DIY home improvement. Are these arrowed parts structural support? I’m looking to vault the ceiling below but I’m not sure if I need to involve an engineer.
Eli Parker's user avatar

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