Questions tagged [structural]

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

51 questions with no upvoted or accepted answers
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34 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
331 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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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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2answers
88 views

Do these “rafter ties” tie anything together?

I've been wondering if I can open this ceiling up for a tall room. I've been reading that the ceiling joists are often also rafter ties so I went up there today to take a look. I can see a few are ...
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1answer
40 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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36 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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22 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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132 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
245 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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1answer
78 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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110 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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623 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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354 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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131 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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150 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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64 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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91 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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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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249 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
3k 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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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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775 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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546 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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431 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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2answers
33 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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27 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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34 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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13 views

What type of Aluminum Sections could handle load equivalent to a 11-12 gauge Steel Sections of 2x3 or 3x3 on such frame?

What type of Aluminum Sections could handle load equivalent to a 11-12 gauge Steel Sections of 2x3 or 3x3 on such frame? If one had to Re-engineer the Vertical Tubes/ Frame using Aluminum. What ...
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35 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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55 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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19 views

Adding Collar Ties as Chase in 1930 Tudor

I'm planning out how to insulate and finish my attic without compromising ventilation. I'm zone 7, with a large, entirely floored attic. Roof is hard slate, original to 1930-built home. No current ...
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23 views

Can you post a 2nd floor joist beam directly to basement?

I have a house with a middle beam in the basement; all of the first floor joists lap on top of the beam. There's a bearing wall on top of the beam that goes 2/3 the length of the house. Most of the ...
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0answers
25 views

Lintel plate support for thick brick wall for window

I need to poke a window in a thick brick wall in a basement carrying the rest of the also brick house above it (2 floors above + roof). The basement wall is 3 bricks thick, each brick 4" wide plus ...
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1answer
285 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 ...
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2answers
51 views

Span between wood post for stilt cabin

I intend to build on Weiss Lake in AL. If I use 8x8 posts, can I span 10 ft with 2x10 or should it be 2x12 for the floor joists? Also was wondering for the foundation can I just sink the wood post or ...
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198 views

6x6 “Landscaping” post for patio cover support?

I am building a patio cover and I need some 6x6 posts to support it. I went to a local lumber yard and asked for some 6x6 treated posts. He had some "landscaping" 6x6 posts and said those should work ...
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57 views

Vibration when lightly hitting one of the walls in an apartment?

I bought an apartment and I'm in the process of renovating it. One weird thing I noticed in one of the rooms is that when I hit the wall with my fist lightly, the entire wall and maybe even the room ...
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1answer
255 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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179 views

Ok to add basement egress window underneath giant grade-level window?

Our one-story house has a very large window on the first floor -- appx. 72" high by 130" wide. I'd like to add a basement egress window to the room below. I'm worried that having more glass than wall ...
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0answers
68 views

Are these cracks in a basement support wall normal?

I'm looking at a 1930's-era house that has stone foundation walls. The basement seems to have been dug out and it looks a wall was built to abut the exterior wall. The wall has a plaster or stucco ...
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2answers
738 views

Structural (cored) bricks for a patio?

I have the opportunity to purchase some pallets of structural bricks, the cored ones with three holes in them. I want to use them to build a patio but I live in Ohio where the winters can get harsh. ...
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35 views

How to Determine the Correct Size of Beam to Support Suspended Planter

I am trying to plan a project that will look like this. The bottom piece will be secured down and won't be able to move. I'm trying to figure out what size of beam I will need to connect the bottom ...
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70 views

How do I make my floating shelf stronger/less susceptible to vibrations?

I'm building an entertainment center. I plan to put a turntable on the middle shelf in the picture below. There will be a floor standing speaker directly below the shelf. I expect the bass from the ...
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63 views

General procedure for replacing load-bearing wall with truss on top

What is a general procedure for replacement of an external load bearing wall wherin the wall is bearing the load of the upstairs floor joists, but also has roof trusts which land directly onto the ...
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0answers
156 views

Building an inverted climbing wall onto a tree?

We have a cottonwood tree in our back yard with a treehouse in it, I have one vertical climbing wall on one side, but we're thinking of putting an inverted wall on the other. The tree is one large ...
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2answers
102 views

Looking for a practical way to find the metal posts locations in finished walls

I am looking for a practical way to find metal posts location in a finished basement walls or finished ground floor walls. I am trying to understand how my house was built. I would like to remove a ...
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0answers
638 views

In kitchen reno, can I make the kitchen ceiling same height as rest of dining room?

Check out the picture below -- that bar / pony wall area and the rest of the wall where the thermostat is are being knocked down to open up the kitchen. Question is, can I make the kitchen ceiling ...
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801 views

Can my garage ceiling handle this much weight?

I am looking to mount a shop light reel and an air hose reel on the ceiling in my garage and am worried that it might be too much weight. Here are the approximate weights: Light reel: 10 lbs Air hose ...
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1answer
521 views

My apartment has a bouncy floor, but it's the only one

While we're waiting for an official inspection, I wanted to get some Internet experts' opinions. I live in the 3rd-floor apartment of a building with two other units below me, all with virtually the ...
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2answers
53 views

Room on top of garage vibrates

My 31 year old house is close to a railroad, lived here for 19 years, I felt mild vibration each time train comes by especially at night. A few days ago I had opening of my 2 car garage door fixed, ...