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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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121 views

Any chance a studded wall is a supporting wall?

I'm taking out a wall between two bedrooms to make it into one. This is a studded wall that was the back of the closet in one of the bedrooms and the wall in the other. This is underneath a flat roof ...
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2answers
4k views

Maximum span/strength of Howe Truss

I'm considering removing some walls in the center of a home with Howe Trusses (see pic). I know trusses are normally designed to transfer all the load to the exterior walls, but what concerns me is ...
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3answers
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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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1answer
60 views

Saggy around sistered floor joist, how to fix?

Our house has a single floor joist that has been sistered running down the center of the kitchen. Sounds great except for the part where all the other floor joists have sagged a little bit and now ...
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2answers
61 views

How to learn house construction? [closed]

I want to learn house construction engineering in very cold climate (Sweden), wooden and brick. It should cover the following questions (you don't need to answer it): How the roof, walls and ground ...
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2answers
756 views

Best way to support carport posts

I'm wondering to reinforce the posts in my carport as it seems one good earthquake could throw these off. Any thoughts on building a form out of wood and pouring concrete around and half-way up the ...
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3answers
2k views

replace load bearing post with steel column

So I have a joist that stops short of a stairwell and doesn’t connect to the foundation and I’m going to move the supporting beam back 2 feet (it’s about an 8 ft run between the header and other ...
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2answers
1k views

Replacing a spanned “beam” with a cantilevered beam

I have a support post in my attic that is holding up one side of a minor ridge beam. The post is sitting on two 2x6s on their backs, and which span 20 inches. Yes, these 2x6s are not on edge -- they ...
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2answers
95 views

Is this wall in my kitchen load bearing?

Sorry for another one of these questions but here goes: My house is a single story bungalow, built in 1976. I can't get hold of the blueprints because the city in which I live does not keep ...
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1answer
202 views

Determine load bearing wall

I recently purchased a small home in a very rural area (in other words, no original blue prints at the recorder of deeds). The home is sitting on a concrete slab and is a single level. I have ...
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2answers
2k views

Will a 4x6 substitute for a doubled 2x6 header?

I am replacing a 3 ft single pane window with a 4 ft double pane window. The old header was just a single 2x4 laid flat with 2x4 cripple studs spaced 16 inches. My question is: can I install a ...
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3answers
602 views

How to spread load of fish tank

I am adding a large fish tank (65 gallons) to my second floor and would like to make sure to distribute the load across as many joists as possible. Is my best way of doing that to build a long, short ...
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1answer
40 views

Structural impact of removing windows from formally exterior wall

Our 1950s ranch on slab was added on to some time in the 1990s. A wall of rectangular windows that used to be a perimeter/outer wall, is now an interior wall. Surely it's structural, but are the ...
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1answer
103 views

Determine which way to place beam for maximum strength

I have a 4" x 6"-16' treated wooden beam. I am trying to determine which way the beam should be placed to provide the most strength for the decking.
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2answers
2k views

can I remove 1 collar tie

I'd like to create a small storage space in my attic. The beam in Red is low and just gets in the way. Can I remove one of the Red beams without causing structural problems? I am willing to put in ...
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1answer
321 views

What's the best place to get a single steel I-beam?

I am knocking down a structural wall in my house and replacing it with a steel I-beam. Where would I get that kind of thing? I am not even sure what to google. The beam is going to be about 20' long ...
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2answers
4k views

Rebar cattle guard

Rebar cattle guard plans http://spofu.com/yay/cattle-guard-plans-rebar.jpg Looking for a cattle guard that can be made from available supplies at local home depot. Needs to be able to support 32,000 ...
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1answer
222 views

How much does weight affect a house?

I just demo'ed a bathroom. At 50 trashbags at 50 pounds a piece I am guesstimating that I took out 2500 pounds. The materials I am using to replace everything in the bathroom are about 800 pounds ...
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2answers
61 views

Reason for no header spanning this load bearing wall?

I'm fairly certain this is a load bearing wall as the beam in the basement is directly below this wall. My question is, shouldn't the area pointed at with the white arrows have a header if this is a ...
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1answer
56 views

Open load bearing wall

There's a wall in my house that I'd like to open to widen a room. The beam (a single 6x10 of hard wood) above is sitting on the concrete foundation at each extremity of the house (10in wide concrete) ...
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1answer
280 views

Load-Bearing Wall? Parallel to Joists, single story, but has attic supports [closed]

I've had multiple professionals look at this wall, and no one has been able to give me a clear answer (2 home inspectors, and 1 structural engineer). So I've come to the source of all truth, the ...
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2answers
480 views

2x4 trusses and 5/8 drywall ceiling

Here's what I have; 50 year old construction. 2x4 trusses, spaced 22" centers (2nd floor). Running 28ft in length with a beam in the middle (14ft). For my ceiling I have nailed up 1" blueboard (Hard ...
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1answer
154 views

Can I make an interior partition wall thinner to accommodate appliances?

We live in a condo are looking to expand our laundry W/D space by a few inches so we can upgrade to a standard machine (27" wide). We only need about 2-3 inches to accommodate a larger machine. The W/...
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2answers
116 views
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1answer
383 views

Is this column load bearing?

I want to remove the pony wall, the floor to ceiling column that separates the kitchen from the family room. I have oodles of original plans, and I don't see any obvious-to-me indicators that this ...
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2answers
346 views

Is a 15 foot tall pergola not feasible?

Looking for some structural wisdom :) I have a deck that sits 6 feet off the ground, and I want to build a pergola whose "roof" (beams/slats) are 9 feet above the deck. So, from ground (grass) to ...
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2answers
701 views

Roof eave missing knee brace - how to mitigate problems as snow season approaches?

Photos at the end of the post. On an old house (new to me and my partner) there are ~2' eaves extending all around the house, supported by knee braces made of 6"x6" beams and a few 2"x4"s. Inspecting ...
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2answers
2k views

Span of roof rafters, how to fix improper structure

I'm building a carport that is 30x24 ft including a 20x24 gable and 10x24 lean to. It currently has 2x4 roof rafters spaced 24" with collar ties about a foot below the gable peak, so 5-6 ft long ties. ...
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1answer
2k views

Knee wall separating from rafters in garage attic

I have a 24'x24' garage built with standard frame construction. The garage is about 15 years old. There is attic space above the garage bays for storage. The attic space has a knee wall of 2"x4" ...
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1answer
146 views

Excavating Under a Concrete Foundation Slab?

I have a small ?30' x 12'? addition. on a cement slab. I think the slab is 4 inches and was reinforced with some steel. Could this cement foundation be the roof for a root cellar? Other than the ...
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1answer
269 views

Lot of cracking noises in the attic

I bought a house about a year ago and ever since there has been a ton of cracking noises coming from the attic. They sound like thermal expansion noises, but they happen all day and night, in any ...
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1answer
278 views

what size of beam should I use to replace 3 2x8 that is 16 feet?

What is the equivalent of a 3 2x8, 16 feet? I would like to use one beam (for decorative effect) instead of the 2x8s since the beam will be exposed. This will go up in my dining room ceiling. If the ...
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1answer
66 views

interior clear span 16' header size

Hi I am looking to clear span 16' interior load on single floor home with light storage in attic. The opening now is 12' supported by 2 2 x 10 hemlock with 3/4"cdx glued in as core. Dose this need ...
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1answer
372 views

Can concrete demo material be used as fill behind same project?

I am demolishing the old outdoor steps at the rear of my house, built circa 1955. I have discovered that they are not constructed on the ground surface, but sit upon a concrete block structure about 4 ...
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1answer
457 views

Rainwater Collection / Pond Water Storage (Tower) Support Question

I am planning to build a *water tower for garden irrigation. I live in NC and have a 45'x70' garden so this time of year I need a considerable amount of water. Given how little rain we've been ...
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1answer
278 views

Ceiling joists job in a cinder block house

So I have a 25 x 30 square house made of cinder block. Roof is just a gable roof with gables on the ends of the 30ft length. My question is, I know in stick framed houses the ceiling joists act to ...
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2answers
143 views

Is a 12-in diameter tree stable enough to support a tree house?

I plan to build a tree house by bolting two (2) 2x6 on the side of this 12-in diameter tree: I don't know what tree it is and in the process of asking here: https://gardening.stackexchange.com/...
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1answer
160 views

Removing inside walls

This is a personal DIY project where I would like to take down completely some interior walls. I've done measurements all around, attic, crawlspace inside/outside, and openings as well. The house is ...
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1answer
22 views

Full Structural Survey for Listed, Managed Building

I'm in the process of buying a flat which is set in the grounds of an 18th century hospital which, as such, is a listed development (under British legislation). The flats are managed by a Management ...
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1answer
52 views

Righting a stone column that is tilting [closed]

I have concrete driveway piers with a stone facade and one of them is tilting like the leaning tower of Pisa. How can I right it and keep it stable?
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2answers
83 views

Building an elevated deck over 6x6x6 posts, a beam made of 3 pressure treated 2x8x16' is too narrow

In building an elevated deck over 6x6x6 posts, a beam made of 3 pressure treated 2x8x16' (where the beams are attached to each other with FastenMaster ThruLoks) is too narrow (~5" versus 6" expected) ...
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1answer
141 views

Why would my garage have separate ceiling joists suspended below larger floor joists?

I am in the middle of building a complex storage rack system in my garage. I ran 2x4 "sleepers" across the ceiling and tied into every floor joist. My shelving system is anchored to this. Here is ...
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1answer
46 views

Can I carve a portion out of the side of a floor joist to accommodate a Fernco Clamp

I am tying a pvc sanitary tee into a 3" copper DWV line which runs along a floor joist (2x12) in the ceiling of my basement. I plan on using a fernco shielded coupler 3007-33 (https://www.fernco.com/...
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2answers
402 views

Will a 6x6x16 pressure treated lumber be okay for a play structure with a single super swing

I want to create a play structure for a super swing. A super swing is like a tire swing in that it can travel in all directions and spin like crazy. I used to have it on a tree branch but we moved ...
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2answers
259 views

Removal of a 2x4 with roof truss built on top

I am remodeling my bathroom and I have run into a problem removing some of the framing where a shower used to be. There is a 2x4 spanning the 5 1/2 foot width of the bathroom and it has been built ...
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1answer
75 views

Design choice and max weight+bending for cantilever

I am playing around with designing a truck camper with overhanging/cabover sleeping area/bed (picture). The sleeping area/bed will be supported by 3 2x4s. Now I need to figure out the best design and ...
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1answer
225 views

Why can I feel my seven pound cat walking across floor of my home?

The house is only 9 years old. (I am the second owner) I know they settle but in the last year I can feel all movement across the floor- year ago I could barely feel anything but did notice that ...
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2answers
156 views

Does my house need structural enhancement?

I live in an area with clay soils, so the homes here move quite a bit leading to typical cracking in drywall around door and window frames. My home seems particularly bad, ex this large crack in my ...
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1answer
76 views

How should I add a second level to a closet?

I would like to separate a closet into two levels for storage. The closet is 55" by 55" with 8' ceilings. I would like the second level to cut this in half at a height of 4'. I was originally ...