Questions tagged [structural]

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

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42 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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27 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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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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50 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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14 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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1k 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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26 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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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
666 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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136 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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83 views

What is involved in creating deck on top of single story, flat roofed home?

I have a rectanglular home that measures 20' wide by 40' long with a giant chimney in the center that spans down through the kitchen and into the basement. The chimney has a 3 sided fireplace on one ...
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1k views

Can I Move Interior Load-Bearing Walls Without Changes/Additions to Beams/Piers/Foundation?

I'm trying to determine if I can make some changes to my house's interior walls without making changes or additions to the underlying beam/pier/foundation structure. I have attached a drawing of the ...
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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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169 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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1k views

How much weight/many people can my rooftop deck hold? 2“x12”x20' joists, 16“ on center, 2”x4" framing under [closed]

How much weight/ How many people can my rooftop deck hold? The joists are 2"x12" over 20ft, 16" on center The framing under the deck is typical 2"x4" framing (living space), on a concrete ...
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48 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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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
597 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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257 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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94 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
2k views

Trying to determine if a wall in my basement is load-bearing [closed]

I want to expand my basement. I removed the drywall from the this wall. Someone told me it is not load bearing but I want to be 110% sure. The floor joists above the basement are running parallel to ...
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281 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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1answer
601 views

Should my fan have been installed off center?

We recently had a Duralum freestanding patio cover installed. There's electrical running through the structure, and a light/52 inch fan coming down from the ceiling. The fan was installed 11 inches ...
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78 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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2k 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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36 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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117 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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77 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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2answers
881 views

Do vertical cracks in old plaster wall along studs indicate a structural problem

My house was built in 1908 and still has its original plaster walls. One of the upstairs bedroom's wall has vertical cracks from floor to ceiling along the studs-3 studs in a row in the center of the ...
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2answers
2k views

What size header do I need for a new garage service door?

I am going to cut out the wall in my garage under my stairs to build a small room. When I put up the door I have to use a header because it's a load bearing wall. Do I need to make the header out of ...
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201 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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3answers
158 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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2answers
3k views

Can you attach a post base to a brick patio?

Can you attach a lumber post base to a brick patio, just as like as to a concrete one? http://img.ehowcdn.com/default/ehow/images/a06/rt/qv/build-above-grade-patio-800x800.jpg Is an additional ...
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884 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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831 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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2answers
5k views

load limit for a 6“x8”, 8' span?

I am putting up a second story in a small building I want to create a framework to carry the load of the addition. I'm putting in piers and posts, which I have found correct info for. I have a stock ...
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1answer
708 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
38 views

Support Beam for 14 ppt span

I have a 14 foot span that is load bearing on 1st floor, 2x8 joists. What is needed to support the weight on this cape in connecticut.
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1answer
74 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
40 views

adding a room on an existing bottom floor

Can the top-plates be the regular double 2 by 4s when a room-addition is going up or does it have to be a heavy beam in all cases? I have not tried anything yet want to know first before attempting ...

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