Questions tagged [structural]

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

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798 views

Front House Posts Not Resting on Anything

I have 5 roof support posts that are supposed to be resting on concrete blocks but one of them is not even touching the concrete block and the other 4 have some separation from the concrete block. ...
3
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2answers
2k views

Are there span tables published for repairing a cut roof joist?

A roofing company mistakenly cut a 2 foot section out of a roof joist, on my home. I'm seeking a reference to what would constitute a proper repair, preferably a prescriptive code or a load table. ...
3
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0answers
65 views

How can I reduce the bounciness of a floor? [duplicate]

My apartment is on the second floor of a low-rise building. There are no units directly under it; the apartment sits above the open-air garage. I feel basically everything that my next door ...
2
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1answer
313 views

Pouring slab but second story sags in old home

I bought a two story home built in early 1900s. It was completely gutted. It had a crawl space so my husband decided we are going to put a slab pouring the concrete 4" higher than the original floor. ...
2
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3answers
2k views

What size beam do I need, and can I build one from lumber and steel?

I want to support a 20 ft. span of my roof where two roofs come together. My house is was originally 46'by 20'. A 40'by 12' addition was added, making an L shape, and when they put the beam in they ...
2
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2answers
196 views

When buying a rental home after many years of our occupancy, is a home inspection still necessary? [closed]

I lived in a rental home for around 8 years and am currently negotiating the cash purchase of it. Because I've lived here for so long and (this is my first home purchase),I'm very familiar with the ...
2
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2answers
591 views

Overkill from my Structural Engineer, can you check his drawings?

I have a cape I am moving the stairs and dormering the back. My engineer sent me these drawings. I think its overkill that he put HSS steel posts with w6x25(steel beam) across for the support. He has ...
2
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2answers
191 views

Can you place a support header in the ceiling?

I am opening up a pass-through in my home and, ideally, the pass-through would open up all the way to the ceiling. It is a load bearing wall, so it will need a header. A contractor told me it is ...
2
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2answers
71 views

How much should I worry about this large crack in the foundation slab?

I recently bought a 3-story townhouse in northern Virginia. I pulled up the carpet on the bottom level (foundation is a slab on grade) and discovered a large crack running along the whole room and ...
2
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2answers
251 views

Does this truss have two or three bearing points?

Part of my roof is made from studio trusses as shown in the picture. I'm trying to determine if any of the load from these trusses is borne by the highlighted wall. The wall is built with 2x6s, but ...
2
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1answer
126 views

beam to replace 5 studs of wall

I recently removed 2 studs from a wall and now I feel like it is not enough, so I intend to remove 3 more. The house is 26' wide and 30' long, built in 1918. It has a basement, main floor, and attic....
2
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2answers
408 views

ELECTRICIAN BORED 4" HOLE through top & bottom chords in attic — how to fix?

I'm extremely concerned; hopefully unnecessarily so. We recently upgraded our electrical panel and I just noticed (about a month and a half later) that the electrician bored a 3.5" hole through what I ...
2
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2answers
433 views

Structural cross joists and load-bearing walls (century home)

I have a friend that recently took possession of a century home. Its a 4 plex and He was told it was an old school house (at least at some point in time). We’re experienced weekend warriors but ...
2
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1answer
5k views

Replacing rot in wooden porch column

I have a porch column which has some rot at the bottom. These are smaller porch columns similar to http://www.homedepot.com/p/Unbranded-6-in-x-6-in-x-8-ft-Pine-Porch-Column-709721/202087424. I've ...
2
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2answers
3k views

Fixing a sagging foundation

We are currently renting our house and considering purchasing it from the owner, but it is sagging, and in some rooms it is rather significant and noticeable, with the worst parts being approximately ...
2
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1answer
1k views

Reinforcement for Ledger Board on Bearing Wall

I'm helping a friend remodel an old addition on his house. We've uncovered a construction technique that may have been normal 60 years ago, but isn't up to the standards of today. I'd like to know if ...
2
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4answers
1k views

Fix Leaning Playhouse

We just moved into a new house and acquired this playset/swing in the process. When we walked through before buying it I never realized how badly it was leaning. I am now trying to figure out the best ...
2
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1answer
686 views

Repair or Replace Cut Floor Joist

After removing an old bathroom floor in a historic structure, in order to sister joists for a level surface to install new subfloor, we found that one of the original floor joists was notched, and ...
2
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1answer
18k views

How can I calculate the yield strength of steel tube?

There's a lot of information -- and even some debates -- on which has a stronger yield strength between square and round steel tube. The majority points to square when the dimensions are equal at the ...
2
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1answer
45 views

Running wire through sole plate and joist at an angle

I am cutting a new outlet in the wall between my living room and dining room. Below is an unfinished garage with completely accessible joists where I can run wire. There are double joists directly ...
2
votes
1answer
28 views

Can these be support columns with these brackets

Is there any way these columns with the top and bottom brackets can be supporting columns. If I can't tell by the brackets, I will need to break into their drywall at places to see if it or another ...
2
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3answers
132 views

Will installing a beam under my shed's floor framing eliminate the bounce?

The previous owner of my property built a roughly 16x12 outbuilding on posts. Besides doing many things in slightly stupid ways, the building overall isn't awful. I've converted it into a manhut where ...
2
votes
1answer
88 views

Hardwood Flooring Direction on Older Subfloor

I have some old hardwood flooring in my house and I'm considering installing new hardwood floors as it's not in the best shape. The house was built in the 1940's and has an older type of subfloor that ...
2
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1answer
70 views

What are the possible consequences of excavating an exterior basement wall?

I just bought my first home and right now we have a storm door entrance into our basement. This kind of baffles me why they put in a below-grade storm door because half of the exterior wall is exposed....
2
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2answers
1k views

Are window air conditioner support brackets designed to support a window air conditioner by itself?

I have this air conditioner that is designed to be used with vertical sliding windows. The problem is that I have a horizontal sliding window. I understand that the air conditioner I have is designed ...
2
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1answer
4k views

What kind of board can span 16 ft for a wall pergola

We are building a wall pergola that we want wisteria to grow on top of. The pergola will only come about 3.5-4 ft out from the wall (Edit: the columns themselves are less than 2ft from the wall). I ...
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2answers
1k views

Is a double 2x4 beam adequate for a 64" opening?

I am opening my dining room and I don't want to compromise the structural integrity. The previous entryway was supported by two 2"x8". The new entryway is supported by two 2"x4". The new support is ...
2
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1answer
3k views

Remove closet center support beam?

I have a bump-out closet in an addition. It had two sets of bi-fold doors, separated by a beam in the middle. The beam seems to bare very little load, and I'd like to remove it for one continuous ...
2
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1answer
1k views

What is the difference between LVL 1.9 and 2.0?

A structural engineer gave me a header design using beams made from LVL 1.9. Looking around, I'm seeing more LVL 2.0 available locally. What is the difference?
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3answers
1k views

Is it safe to shave off 1/8" from a load-bearing stud?

I am trying to install a small metal media cabinet in a load-bearing wall in my basement, but unfortunately the cabinet is about 1/8" too wide to fit between the studs. Is it safe to shave off a ...
2
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2answers
355 views

What's the point of a thin (1/4" width) piece of wood set diagonally between two studs?

What's the point of a thin (1/4" width, ~2-3" wide) piece of wood set diagonally between two studs? I just took out a piece of drywall for some other work I'm doing, and between two studs, there's ...
2
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7answers
29k views

Can I get away with 5/4“ cedar decking across a 24” span in a children's play structure?

I am currently in the process of designing/building a play structure for my son. The structure will include a 5' high elevated deck, that is 6'x4'. The supports for the decking will be 24" center-to-...
2
votes
1answer
82 views

Are these drywall blisters normal settling, or is there something wrong?

My house is two-story wood frame construction, built in 1979, with an addition that was put on some time in the (I think late) 1980s. Recently I have noticed several blisters in the drywall, as shown ...
2
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1answer
49 views

Exterior wall framing - Safe to remove 2x4 that was part of soffit/bulkhead?

I've removed all the soffits in my kitchen, however, there is one 2x4 that I have left until I could consult someone more knowledgeable. I'm thinking the 2x4 was there just to hang the drywall ...
2
votes
2answers
79 views

2 x 6's stacked VS 6 x 8s?

The design for a retaining wall calls for pressure treated 8 x 8 posts, 6 feet on center and 6 feet below grade, with 6 x 8 pressure treated walls 4 feet in height. The retaining walls are a 26 foot x ...
2
votes
1answer
54 views

Sistering a damaged joist with 2 smaller pieces of wood

I am trying to repair some water damage below an ensuite shower on the upper floor of a house. The room is only 120cm wide and the wet rot damage is isolated to the joist directly below. The damage to ...
2
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1answer
8k views

Load Bearing wall running parallel to floor joists above? [closed]

So I have a wall I would like to remove in my house (see picture 1-3). I did some exploratory surgery (aka cut holes) in the drywall to see what I was dealing with. This wall is running parallel to ...
2
votes
1answer
520 views

How should I replace a cantilevered rim joist?

The rim joist on the front of my house has water damage and needs to be replaced. When I pulled off most of the rot, less than half the board's thickness remained. The floor is cantilevered about 3 ...
2
votes
2answers
326 views

Trying to Determine if Attic Braces and Collar Ties are Structural

I have a 1924 house. The attic has 2x4 ceiling joists with 1x4 collar ties about 80" above the joists. The slope of the roof is 20/12. Below the collar ties there are two crossing 1x4 braces that ...
2
votes
1answer
183 views

How can I support both floor joists and roof trusses while I replace wall framing below?

I have a wall with some termite damage near the tops of the studs and into the top plates. The wall is external front of the house. Wall is in blue in the diagram below. It supports the floor above, ...
2
votes
1answer
428 views

Can we safely hang a ceiling fan from our vaulted livingroom ceiling?

We have a tiny 1920's bungalow that's changed shape over the years, and we'd like to add a high efficiency ceiling fan to our living room in to replace an existing (lightweight) chandelier. The ...
2
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2answers
122 views

ceiling joist storage expression

I have pre made truss ceiling joist in the garage. The joists are 2x4x21'. I want to use space above the joists for storage. I want to sister a 2x6x21' or 2x8x21' next to 2x4x21' is this ok? If ...
2
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1answer
2k views

Can it be appropriate to orient a 2x4 “wide side out”?

When we frame walls, we normally orient the 2x4 with the thin surface facing outward. What are the consequences of orienting the 2x4 so that the wide surface faces outward instead? Does the wood ...
2
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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 ...
2
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1answer
65 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 ...
2
votes
1answer
296 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 ...
2
votes
1answer
1k 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 ...
2
votes
1answer
490 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
votes
1answer
371 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 ...