Questions tagged [structural]

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

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2
votes
1answer
4k 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
votes
1answer
2k 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
2k 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
378 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
34k 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
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1answer
120 views

Drywall is off, can this wall come out?

I know the most sure way to figure this out is to have an engineer look at this but am hoping to get some insight here from someone knowledgeable in this area. We live in a condo and have a truss roof ...
2
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2answers
55 views

10d nail gun or # 8 screws

I have to do a one side 8ftx6” slab repair on 6 lower chords on my trusses. I can use 10dx3 nails or #8x3 screws. Do you think it would be better to use nail gun or screws?. I understand nails have ...
2
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2answers
96 views

How can I prevent post support brackets from creaking under foot traffic?

I (well, a contractor) added a new addition to my house, and the floor creaks when I walk on it. I crawled under the addition and identified the problem. On each footing, there is a steel bracket ...
2
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1answer
255 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
85 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
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2answers
90 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
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1answer
192 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
14k 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
793 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
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2answers
439 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
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1answer
291 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
692 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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4answers
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 ...
2
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2answers
136 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
3k 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
3k 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
59 views

Adding blocking between joist to support column?

I have this drawing for open up the living room wall. The architect is proposing a 5-1/4x16"x16' lvl beam with 5-1/4"x7-1/4" column on each side and adding 2x8" blocking btw. ...
2
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1answer
70 views

What structure is inside these stair walls between floors (for running wire)?

I am planning to run CAT6 from the basement to the attic through the first and second floor of my 1905 wood house (renovated some time in the last 20-30 years). Location is Seattle. There's an ...
2
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2answers
92 views

What's the proper way to add spacers between deck beam and joists

I have a 20 year old deck. One of the foundation posts (4x4) has sunken about an inch. The 4x4 post goes into the ground where it is affixed in concrete. The 4x4 post is notched at the top and two ...
2
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2answers
63 views

How do I deal with 3" subfloor overhang and extreme joist notch

I have two distinct problems I found after removing a replacement piece of subfloor that a previous owner had cut and put in to place. First is there is a very large notch (12") created in a joist so ...
2
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1answer
288 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 ...
2
votes
1answer
61 views

How to demo a partially structural chimney?

Just bought a new home and would like to remove its chimney. It was originally built on the outside of the home and they built a carport up around it. It looks like it may have sprung a leak, so the ...
2
votes
1answer
106 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
2k 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
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1answer
3k 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-...
2
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1answer
3k 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
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1answer
786 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
501 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 ...
2
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5answers
5k 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
votes
1answer
285 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 ...
2
votes
1answer
795 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 ...
2
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1answer
603 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 ...
2
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2answers
429 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 ...
2
votes
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 ...
2
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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....
2
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2answers
153 views

Are these walls load bearing

Looking to remove the closet and wall in this restroom. Already had a structural engineer look at it before I removed the drywall. He only checked the studs with a Franklin stud sensor and didn't go ...
2
votes
0answers
90 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 ...
2
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2answers
1k 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 ...
2
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1answer
498 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
186 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" ...
2
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1answer
688 views

Should I use non-shrink grout to help with support posts?

I am installing a new, approx 16' support beam in my house, to be held up initially by adjustable jacks, and permanently by 4 4" wooden posts. Some time ago I saw on one of the construction shows an ...
2
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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 ...
2
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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 ...
1
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6answers
11k 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 ...
1
vote
2answers
80 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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