Questions tagged [structural]

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

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53 views

Structural integrity of new fence on concrete slab

I recently bought a condo with a 11'x13' patio with a wooden privacy fence. The fence is in pretty bad shape so I want redo it with new wood in a more modern design by doing horizontal planks. I ...
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80 views

When using a VPA (Variable-Pitch Connector) to connect roof rafters to a top plate, how and where do you install hurricane ties?

When a VPA to attach rafters to a top plate, it seems there isn't room left for your normal hurricane tie to be put in place: The part of the VPA that nails on to the top plate obstructs the ability ...
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1answer
80 views

Add storage to hidden attic space above garage?

I recently discovered that I have an unfinished attic in a guest bedroom on the second floor of my house, above the garage. The overall area is behind the closet in the bedroom and is approximately ...
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382 views

Need help reinforcing a pergola

We built a pergola last fall and are noticing some wiggle in the structure. The columns are bolted into deepened edges of a concrete slab, But we did not want traditional brackets at the column to ...
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2answers
72 views

One wall parallel with joists

My house is Colonial rectangle. I have opened up one load-bearing wall that runs about 2/5 of the length between the den and the living room. With help and excellent advise, I put in a 90" header for ...
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507 views

Strengthening existing 2x4 joists to create a mini attic

Between the first and second floor of a friend's house he has about 4' of dead space that he wants me to help convert into storage (this is in San Francisco, so every square foot counts!). He got the ...
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1answer
119 views

Can I Notch a Double 2x12 Floor Joist Down to 2x6 Size (5.5 inches) if I need a 2x8 (7.25) per My Local Span Table

I have a 12' span with a floor joist that is currently 2 2x12's. It was originally a 16'+ span with an attic opening that was 3' wide thus the reason for the double 2x12's. I'm installing an L ...
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1answer
233 views

Adding a 24" closet door to interior shear wall

Does the wall in the image need additional support? I intend to put a 24" wide closet in a hallway. The Wall has a diagonal beam going across it. I believe the beam was put there for shear. Supporting ...
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190 views

Please help - wonky post location on pergola - concerned with shearing and stability

So ever since my wife pushed me to move the post off square I've been searching online (periodically for about a month and I've never found someone dumb enough to have done this and had a tutorial or ...
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3answers
123 views

Supporting Ridge Beam Post with LVL?

I want to open this span (about 12') and planning to purchase 2 x 10" LVL's which will sit beneath the double top plate that is already there (so our beam will be 12.5" tall x 3.5" thick). There is ...
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127 views

Looking for a part: I want to put a vertical hinge onto a standing pipe

I would like to attach some kind of pivoting hinge onto a 1/2" - 3/4" metal pipe (e.g. galvanized or cast-iron): Something almost like this but instead of bolting onto a flat surface, it clamps onto ...
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167 views

Interior wall construction - Is it possible for this to be load bearing?

I have a 2-story brick house built in 1940 with balloon construction. On the first floor, I have an interior wall between my kitchen and living room. I have done (I think) my homework, looked at the ...
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436 views

Don't bore/notch in middle third of a joist… span or member?

Suppose I have a continuous joist supported somewhere in the middle. For ease let's say it's a 24 foot continuous joist, and there's a bearer right in the middle at the 12 foot mark. Here's a picture ...
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2answers
624 views

How can I support drywall with a steel post on an outside corner?

I have a steel support post right on the corner of a wall, which protrudes on one wall about 1/4". I am getting ready to look at drywall and wondering is there any other option than to build around ...
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1answer
297 views

Board on top of joists in attic. Is it structural?

I've attached a picture (not the best), but you can see the board I'm referring to peeking out of the insulation. The joists run left to right in relation to the point of view of this picture and ...
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2answers
4k views

How can I make sure a shed is hurricane rated? [closed]

I need to build a metal shed about 10' high and 6x6 in floor space which must be able to withstand 175 MPH winds. How can I make sure that the shed and its anchors can hold up under those conditions?
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2k views

Should a board connecting a beam in the attic to a rafter be removed?

When I bought this house (foreclosure) the prior owner was in the middle of a project to remove a wall. It is a load bearing wall 12' long that supports the ceiling joists which span 24'. T the other ...
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106 views

Need to attach shelving unit to wall; what kind of wall structure is this?

I live in an Australian inner city apartment built in 2007. I want to attach a shelving unit to a wall but haven’t ever done this before, so I want to make sure to do it properly. I’m not sure exactly ...
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99 views

This wall can be demolished, right?

Seems obvious to me that there is no load bearing on this wall since the wall stops at this point, but would love a second opinion.
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3k views

Deck post cut too short - possible solutions?

I have a new deck going in the back of my house, about 6' off the ground. Made a HUGE mistake and made cuts on the posts 4.5" too short. Short of removing the posts and concrete, digging new holes and ...
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1answer
74 views

Rising damp, ground floor walls

I have an old house (about 150 years old) which has an issue with rising damp. Plastic sheets were placed under the floors, so they aren't affected, but the walls (up to a max of 4 foot) are damp ...
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1answer
259 views

Where is the ledger supposed to attach to the rim joist?

If you look at the pic there's a gap right under the door way, about 5 inches deep and high. The rim joist of the house is halfway behind the brick and the other half is exposed right under the door. ...
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53 views

Can a 290mm x 45mm lvl beam be used as a structural ridge beam?

Also are ridge beams only used for exposed ceilings, or can you install ceiling joists which are connected to the rafters, - i assume this would provide extra support. This is for a single story ...
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517 views

How do you build a portable lightweight frame for trees?

I have fruit trees that vary in size that need frost protection in the winter and bird protection in the summer. I have been hanging frost cloth and bird netting over the trees using the branches as ...
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1answer
490 views

What is the unit dead load of concrete?

I have a question about what the unit dead load is. For structural concrete, the unit weight is 145 pounds per cubic food. Is the Unit Dead load 145 pounds?
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2answers
5k views

How do I prevent interior doors from sticking in the winter?

We have several interior doors that only stick or won't completely close in the winter. We also get cracks in the drywall mud above the doors so I think something else is going on besides just ...
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1answer
3k views

How close is too close, when digging below foundation level?

I'm digging a drainage trench near my foundation, and have hit the bottom edge of that foundation. In this case it's a T style foundation at the edge of a slab, but elsewhere there's no slab. From ...
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1answer
322 views

Is it allowed to have a small hole bored in a joist in the area where it is bearing on a beam or joist hanger

I am trying to determine if my house is up to code with respect to some holes that I found bored in the ceiling joists. The holes are about 1 inch in diameter and at least 2 inches from the top and ...
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1answer
95 views

Back door frame no longer square

I live on the 3rd (top) floor of a condo building. Our back door - which opens to the outside, is not square. The building was built in 2006 and the drywall around the door at the corners is cracked ...
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1answer
5k views

Can I use a threaded rod for a rafter tie?

Long story short: I am working on a 1960's house with no rafter ties. The rafters themselves are now attached with screws and strong-ties (previously just double nailed!) but I don't have faith in the ...
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1answer
489 views

How can I remove an inner wall of a gambrel house?

We own a Gambrel house built in 1978. I want to remove a six foot wall section that includes a doorway. This wall runs parallel to the floor joists in the basement. The main center beam is about three ...
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60 views

Can I drill through the bottom plate of this first floor into the basement?

I have a 1905 balloon-framed house in western Washington. I would like to run wiring down the front exterior wall into the basement. I've tried looking up designs for this architectural style but it's ...
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31 views

concrete blocks

can you use the large interlocking concrete blocks(1600mmx800mmx800mm) to build a house? Would you use extra cement or would you it be safe and strong with the right structure to withstand hurricanes? ...
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3answers
59 views

Is it possible to cut a larger opening in this window / serving hatch of this pool house?

I'm curious if it is possible to cut a taller opening in this pool house or if that would create structural issues supporting the roof From the inside you can see I would remove the 3 stubby studs ...
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3answers
87 views

How to attach single step for deck where deck rim joist is not low enough to overlap step rim board

Similar to this question. I am trying to attach a single step to a deck located adjacent to a patio, a setup which looks like this: I'm trying to figure out how to secure the step effectively. Here ...
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26 views

12 x 16 two story Cottage lifting

How do I lift this with three beams? I would like to put in 8 inch round pilings at the end of the beams and lift it on top of those. What can I use as beams? What size? Steel or wood? What about ...
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67 views

Can a header be continuous across the whole wall if it is above the top plate?

I have seen that continuous headers can be problematic due to lateral forces. However, in my situation the "header" is actually a 4x6 purlin which is above the top plate. The original purpose of the ...
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1answer
110 views

Is a soundproof stud wall made of 38 x 63mm CLS strong enough?

I'm building two stud walls joining at a right angle to create a small room in the corner of a larger room. The timber I'm using is 63x38mm (2 1/2" by 1 1/2" - actual measurement) CLS. One wall is 2.4 ...
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1answer
29 views

Are Steel SIPs Structural?

I am from the Caribbean and we have a lot of termites so OSB SIPs are not an option, my question is this, are steel SIPs Structural like OSB SIPs? SIP = Structural Insulated panels. EPS = Expanded ...
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2answers
482 views

What is the best way to hang a weight lifting pulley system in my detached garage?

I want to hang this pulley system in my garage (partially pictured above) and probably will be loading it up somewhere between 100-200 lbs of plate weights: https://www.spud-inc-straps.com/econo-...
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88 views

What are the requirements for a header for an open passageway through two rooms?

My question is for both load and non-load bearing walls. There used to be a hinged door between the kitchen and dining room, who knows when it was removed (I've been here a couple years). The door ...
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26 views

Should I be concerned with the condition of the bearing end for this lintel?

Having stripped back the wallpaper in our living room in preparation for a re-skim of plaster, we have discovered a door which we didn't know existed, right next to the door into the living room from ...
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1answer
251 views

Load bearing wall or not?

I have a 10ft wall that spans only a third of the width of the house but is perpendicular to the 20' long 2x10s below it. One end of the wall could transfer load to the foundational wall but the rest ...
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194 views

Can I remove perpendicular ceiling joists in porch

I have porch attached to the exterior wall of the house roof is pitched away from the house: I am in the process of gutting it and want a vaulted ceiling. There are ceiling joists running ...
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1answer
416 views

How should I compute the clear span of a purlin in a roofing system?

My house employs purlins to support the roofing rafters. (this video explains almost perfectly what I have in the house). There are two purlins, about 6 feet from each other and the top ridge of the ...
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2answers
350 views

Aluminum vs galvanized vs stainless tubing for fence with railing?

I'm building a simple fence that's composed of 1" or 1.5" OD x 0.065" wall x 4-ft tube soldered to a stainless steel base that's bolted to concrete. This fence will have a wood rail at the top. ...
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123 views

Retrofit Foundation Posts/Beams

Bought a new (old) place and our inspector pointed out beams/posts that need framing/structural straps in the crawlspace. Ballpark estimate I got from a foundation contractor (site unseen) was a $3,...
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1k views

Holes through plumbers box (double header in floor joist)

A joist is right where the drain is for the bathtub and I am looking for a solution to do the plumbing. Currently, the plan is to do a 'Plumbers Box' in the floor joists which solves the initial issue....
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390 views

Sistering 2x8 joists to existing 2x6 under pitched roof

We are going to be remodeling our attic to create 2 extra bedrooms and a living space. Currently there are only 2x6 joist in the attic. We are being told that we should sister 2x8s against the ...
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163 views

Relocating a toilet without weaking floor joists

Can I drill a 4" hole in 2" x 10" floor joists 3' 6" from end of wall? I'm located in Ontario Canada if this is relevant.

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