Questions tagged [structural]

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

65 questions with no upvoted or accepted answers
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142 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 ...
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0answers
66 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 ...
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2answers
818 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 ...
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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 ...
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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 ...
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46 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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0answers
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
56 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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2answers
51 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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0answers
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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0answers
38 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
68 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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2answers
250 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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1answer
51 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 ...
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0answers
76 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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0answers
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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0answers
183 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
381 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
324 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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0answers
122 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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0answers
932 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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0answers
373 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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0answers
154 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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181 views

Can a PSL beam support second story joists all hanging from it

My home is a 2 story home, built in 2003. There is one section in the home that was left open to above with approximately a 20' ceiling in this case. This is over the living/dining areas of the home ...
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0answers
72 views

Concrete slab between stories

Here in the U.S., pretty much all the houses, even those that are made of brick, have framed floors, meaning there are 2 x (usually 10) joists from one side of the house to the other and then OSB ...
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0answers
103 views

What aspects of bricklaying are most important structurally vs aesethically

I've seen homes where the mortar is squeezing out between bricks. This appears pretty sloppy must still be structurally sound. It seems that the pointing of the joints is just an aesthetic choice. ...
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0answers
1k views

DIY Camper, framing advice needed

So my little teardrop trailer plans have changed into a 12'x6' camper so that I can stand in it. I'm in the planning phase still. What I'm doing for the walls is 3 layers; an outer 1/2" board, a ...
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0answers
269 views

Can these metal ceiling drywall joists be removed?

I recently removed the drywall ceiling from my basement with the intention to leave it as an exposed ceiling. Would I be correct in understanding that the metal ceiling joists (highlighted in blue in ...
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0answers
53 views

Calculating Tie Plate loading and double shear

I am considering the use of L strap ties from Strong Tie. I will be connecting two 4x4's in an L-configuration. The image at the very bottom-right corner of the below PDF illustrates exactly the ...
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0answers
833 views

Minor Crawlspace Excavation: Need permits/structural engineer?

Background: First house, built in the late 60s, bought in October 2014. Original house has crawlspace with combination cinder/concrete foundation. Master bedroom is an addition to the house with a ...
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0answers
602 views

Information resources for Traditional Japanese Homes

My family and I are preparing to purchase a more or less traditional Japanese home in Hawaii. I am checking up on the claims that it was brought here from Japan and built in 1965. Interior ...
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0answers
451 views

Is this vertical gap in the concrete block foundation something to worry about?

I'm looking at a home that has a vertical gap or crack running the height of the exposed concrete block foundation. The crack is near the center of the home, about a foot to the right of the concrete ...
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0answers
37 views

Steps to repair rotten 2 story wall

So I have a porch that has significant rot due to a leaky skylight. This had been fixed with a new roof. I found significant rot in the wall. This wall is load bearing and is supporting the roof. The ...
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1answer
52 views

How to stabilize a pergola

I am building a pergola but have no way of sinking the posts into the ground. I have drilled a steel bar into the ground about 8" and the same up into the 4 post which are 8"×8" 7 feet ...
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1answer
29 views

Lime mortar mix ratio

I am going to repoint an old interior brick wall (This is my first time) but the problem is that, I do not know what the best lime-to-sand ratio is? 1:2, 1:3, 1:1, 2:2 or something else? I want my mix ...
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0answers
26 views

suspending a 36x26 solar panel on a single 4x4x12 post (9' above ground 3 feet into the ground)?

I'd like to suspend a 36x26x1 aluminum solar panel 9 feet above ground on a SINGLE 12' 4x4 timber with some 2x4s at the top. I'm in central Florida. Will it be too top heavy? wind issues? it's a ...
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0answers
18 views

How to construct posts on 15' tall dock

I am working on designing a 2 story dock that will house my boat and have a deck on top. I was planning on constructing the dock using concrete pillars and 6x6's. My original plan was 12" wide ...
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0answers
31 views

Can I use scaffold boards butted side by side instead of rafters for a flat roof?

The thickness of a scaffold board is 35mm and so laying the boards side by side (just like you would see on scaffolding) instead of using 4 by 2's will create an extra 60mm of much needed headroom ...
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0answers
12 views

Support beam and posts for a new construction deck

I am in the planning phase for a new deck I am building for my house. I have built a few other decks before but they were rectangular in shape and pretty straight forward. The deck I want to build ...
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0answers
315 views

What are some alternatives to making birdsmouth cuts in a rafter?

I'd like to avoid making a birdsmouth cut in my rafters since they are extending beyond the top plate in a cantilever, and I don't want to reduce the strength too much. I've seen that there is VPA (...
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0answers
21 views

Does the 2/3rds rule for cantilevers still apply if the cantilever is at an angle?

There is a rule that a cantilever should be 1/3 the span of the supported beam. My assumption is that this rule is intended for rafters close to horizontal. Theoretically, the steeper the angle, the ...
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0answers
15 views

Which is more preferred, PU SIP core panels or EPS SIP core panels?

I am looking at something that can last a long time, has good structural component and provide good insulation. Which would be the preferred option in this case? I am from the Caribbean. Thanks!
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2answers
234 views

Replacing ceiling joists with rafter ties higher up on the rafters

I'm trying to help my grandfather plan for a remodel of his 1950s home. The original structure is 24x24' with 6" rafters spaced about 20" apart on a 6/12 roof. He'd like to be able to have a "vaulted ...
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0answers
90 views

Frame a jack stud without bottom plate?

I need to frame a small header in my kitchen exterior wall for a range hood exhaust because the 8" hole is dead center on a stud (of course). It's a 2 story 1941 house with 2x4s 16 on center. The ...
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2answers
51 views

Creating deck on top of single story flat roofed home

I have a rectangle home that measures 20' wide by 40' long with a giant chimney in the center that spans down through the kitchen and based in the basement. The chimney has a 3 sided fireplace on one ...
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0answers
29 views

TV stand anchored to wood table

I would like to put a TV stand like this on the wood of a closet. The TV is 20 kg weight. The weight is relatively small, but as the support allows an arm extension up to 50 cm, that means an ...
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0answers
115 views

Flitch plate vs LVL for sistering an engineered beam

here's the quick skinny: I'm looking to reduce the deflection on a 13' beam before doing tile work on the above floor. It's a 5" wide parallam and it's deflecting at least 1/4". it's bearing on triple ...
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0answers
45 views

Is the wall in this blue print able to be removed? (Blueprint in Spanish.)

I am looking at a home to purchase in Queretaro, MX where I have been transferred for five years. There is a two year old home in a great location for the right price but the rooms are really small. ...
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0answers
56 views

Hello All, I’m trying to take down the 3 walls - load bearing or not?

This is the attic - and I will post the 3 walls as well- this is 1 story.
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1answer
506 views

Removing diagonal truss brace?

Looking to put insulation, plasterboards on the garage ceiling and some down lighters, Not a massive amount of heavy stuff is currently stored there (primarily boxes etc). There are 5 joists, joist ...