Questions tagged [structural]

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

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55 views

Identify if this is a load bearing wall from the blue print

We are exploring the remodeling of our kitchen, and wondering if this wall between living room and kitchen is load bearing ? I have attached the blue print and photo. Are there any indications in the ...
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1answer
53 views

How to get electrical from the side of a beam into a wall under it without crown moulding?

I'm partially finishing an unfinished basement, and part of that involves installing a wall. I put the wall in the 'natural' place right under the central beam supporting the middle of the house, ...
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What size LVL beam to replace 17 foot load bearing wall (marriage wall) on first floor of two story colonial modular home

We are currently in the process of opening up the space between the living room and family room on the first floor. The house is a 2 story, 2600 square foot colonial modular house. The wall we would ...
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24 views

Installing new basement post to support first floor post

I am opening a first floor load bearing wall 15 feet wide . This wall sits one foot off from the basement center steel beam, with 2x10 joists 16" on center. The engineer has specified the first ...
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3answers
183 views

House shakes violently at least once a day

Summary: Our house shakes and sways for an instant almost every day (it feels like a car just ran into it) and we're worried it may one day collapse. Any suggestions as to what it could be? How to ...
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32 views

Filling first concrete floor with Autoclaved aerated concrete (AAC) brick to 3 feet height is good?

First concrete floor is with 500 sq.ft. area. Out of this, 200 sq.ft. is in projected form for about 3 feet height. So, we are planning to fill in with AAC blocks up to 3 feet height for the rest of ...
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41 views

Can I replace two 2x4 jack studs with a steel bracket attached to side of adjacent 6x6 king stud?

As part of my kitchen remodel, I want to move my refrigerator into a closet. In order for the refrigerator to fit width-wise, I need to remove two jack studs on one side of the closet that are ...
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30 views

What’s the ideal overhang for a 26’ LVL beam?

We just installed 3 LVLs (3) x 1 3/4x 24” x 25’ . Can someone recommend the ideal overhang on the posts for a beam this long? The engineer recommended 8’’ hang on the post on each side, but my ...
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25 views

Can I make hole above a lintel for a flue

I'm doing some work on a flat and want to move the boiler higher up than it is. That means putting a flue above the window. The problem is I'm the second to top floor flat. As you can see from the ...
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1answer
95 views

How serious are these cracks in drywall and foundation?

I just bought this 20yr old house a year ago and now I am noticing crack indoor as well as on the foundation. Indoor crack goes all the way across the ridge of the angled wall and down to the corner ...
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1answer
120 views

Why is my cottage wall bulging outwards? [closed]

Purchasing a cottage and trying to figure out how much work/money it'll be to repair an odd bulge in the wall. The south side wood wall is bulging out near the center. Although not clearly visible in ...
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3answers
654 views

MC Cable through double 2x4 top plate

I'll be newly wiring a room on the second floor, in this case putting in outlets. The house is old, balloon frame 2x4s, with a double 2x4 top plate that the rafters rest on. I have 250 feet of 12/2 mc ...
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2answers
54 views

How to detect a load bearing wall?

Hello - I attached a quick picture to help determining whether the kitchen wall is load bearing. when I checked my basement, it has set of four concrete square pillars (not in the center but towards ...
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1answer
52 views

Rotating a staircase and making a new landing. How do I support it

I am looking to rotate this staircase. Instead of descending in a southerly direction, I would like them to descend to the east. To do that my plan is to make the top step (step 5) into a landing and ...
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0answers
75 views

What is the right way to plumb bathroom drainage across small joists?

Finished the demo part of the bathroom remodel to find pretty significant damage to the floor joists caused by the original builder's "design" (see photos/video). Setting aside how I'm going ...
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1answer
113 views

Unsupported joists in attic?

In my attic there is a beam that ends 80% of the way through. A few of the joists are connected with nails but are unsupported laterally. Should these joists have better support?
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3answers
130 views

Can I put holes in every floor joist?

I have a detached workshop (30'L x 25'W) with two levels. The second level is mainly (only?) for storage (floor is 3/4" plywood and can be seen in the picture). The floor joists of the second ...
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1answer
53 views

Garage ceiling joist support for studio apartment?

I bought a house with a 24x24' attached garage. The rafters above the garage has a cape cod style. There's already a door in the attic space leading to the outside (2 stories up with no staircase....) ...
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27 views

Is lag bolting ledger board into foundation safe for overhead storage?

I'm planning a project for an unfinished room in the basement and I have an important structural question. There's about 15' of vertical space but I want to build 10' ceilings with access to overhead ...
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1answer
136 views

Rough opening is too small for sliding patio doors

Just before installing a sliding glass patio door today in our self-built home, we measured the rough opening and it is 1-3/4 inch too short for the height of the slider. (The slider is 6 feet wide by ...
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1answer
49 views

Can I put a “U” turn in my range hood exhaust duct?

In the photo below The red arrow represents the direction of the exhaust, as you can see there is a load bearing joist in the middle which I can't cut. I'm planning to build a recessed ceiling on that ...
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5answers
5k views

Can I put a 6" hole in this ceiling joist?

I'm working on my kitchen to add a range hood that goes outside the house. I'm putting the 6" exhaust pipe in my ceiling, between my 1st and 2nd floor, going in the direction of the ceiling ...
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2answers
40 views

Mounting bat house on cedar siding - too heavy?

I have built a pair of bat houses using these plans at Bat Conservation International. A finished house weighs about 25 lbs (11 kg) and I would like to attach it to the outside of my house, over ...
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0answers
72 views

Best way to fill large (3") vertical crack in solid brick party wall?

I live in an East Coast row-house built in the early 1920s. There is a 3" crack in the solid brick party wall that I need to address (see photos). My neighbor's baby's room is on the other side ...
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1answer
57 views

Floor frame for 8' wide shed is 3" too wide on either side

I'm currently building an 8' x 13.5' shed with a loft. Here is what it is supposed to look like (according to the plan): For a few reasons, the floor frame is too wide. I poured the piers slightly ...
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24 views

Reflooring a horse trailer

What kind of treated wood thats is 1 1/2" thick x 6" or 12" wide will support roughly 300lbs per hoof.
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1answer
38 views

Shed Roof is Black and Has Water Damage

my Dad's shed had a roof that he didn't take care of for a while and now appears to have rotted in several regions. I'll provide several pictures, but the video is best: Link What is the best way to ...
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1answer
39 views

Steel stair stringer size

trying to design a straight stair run using steel tubes as stringers. total run = 10'-0". total rise is 8'-8", width 3'-0". Support is only at each end. yes these are steeper than ...
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1answer
34 views

Concrete block water wall footing requirements

My wife and I would like to build a 6 foot high, 8 foot long fountain wall, using concrete cinder block that will then be covered with stone veneer. My question is regarding the footing. We obviously ...
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1answer
104 views

Safe to remove this wall and header?

I am hoping to remove a portion of wall along with a door header. I don't think it is load bearing but I just wanted to get some opinions. I have had one contractor say it is, and another say it is &...
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1answer
101 views

What should be done to check the capacity of a 100+ year old wooden floor joist?

Short version A 7.5cm x 20cm wooden floor joist from an apartment constructed in 1906 in Rotterdam, the Netherlands will be subjected to an increased load. The type of loading the floor joist will ...
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0answers
16 views

Sizing wide flange I-Beam for 20" span

I am doing a barn renovation project (pacific NW, 98922), and need to take out a large load bearing wall and replace it with a beam. Was going to use an LVL (which I sized at about 5.5 x 18") ...
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1answer
68 views

Which is the load bearing wall?

We are looking to add a door to a wall in our basement and wanted to see what was possible by figuring out what wall is the load bearing wall. Both walls are perpendicular to the joists. The wall on ...
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3answers
139 views

Why is double plate necessary in this case?

I'm creating a 10'8" opening to my kitchen. The architect proposed a double top plate with king stud, jack stud and (3) 2x12 header but would not explain why. The existing framing does not have ...
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1answer
131 views

Adding blocking between joist to support column?

I have this drawing for open up the living room wall. The architect is proposing a 5-1/4x16"x16' lvl beam with 5-1/4"x7-1/4" column on each side and adding 2x8" blocking btw. ...
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1answer
4k views

Seemingly overbuilt basement wall - load bearing?

I'm doing some prep/exploratory work before I begin finishing my basement. Home was built in 1980 and has a cement block foundation. There is a seemingly random wall framed in the otherwise unfinished ...
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0answers
38 views

Is this brick knee wall tied in to the main wall?

We would like to remove the L-shaped brick "knee wall" in the picture on the left. The picture on the right shows the seam between the knee wall and the main wall of the house. Is the knee ...
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1answer
42 views

Where can I get engineering info drafted for a custom header?

We’re building a shop ourselves and keep failing the shear inspection because we don’t have the engineering results to send to the city engineer. He said our wood supplier should be able to draft that ...
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1answer
43 views

Turn triple window into one bow window, structural concern?

I have a very old window probably from the beginning of this house in 1970's. Now I want to replace this old aluminum window with a bow window. my question is there are two posts of the triple window. ...
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1answer
456 views

Do I need a lintel on a non-load bearing wall?

I'd like to knock through an internal, 8cm-thick wall in order to install a door. The door will be sliding, and the sliding rail will be drilled into the wall above the opening. I know lintels are ...
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5answers
2k views

Will these DIY steel plates for post to beam connections work as well as the commercially available ones?

My soon to be constructed deck will have beams made from three 2x12s sandwiching ½" plywood, sitting on 6x6 posts. This gives both the beams and the posts a width of 5½ inches. To ensure the ...
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1answer
408 views

Is it safe to drill a 6" hole into a beam or i-joist for range hood duct?

I'm installing a range hood over my island after a kitchen remodel and I ran into an issue. If I try to run the ducting alongside the joists in the ceiling I run into a beam which looks to be ...
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2answers
80 views

Cracks in new house concrete foundation

I am buying a new home. The foundation was poured in Sept 2019. The home is nearing completion but the floors have not yet been installed. I see cracks in the foundation. Most concerning are two ...
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2answers
2k views

When sistering a joist or rafter, must the ends of the sister be supported?

When sistering a floor joist, must the sister be full length to the original joist and must the ends of the sister be supported on a sill or beam for the sister to be truly effective? Assume the ...
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1answer
71 views

How to connect cross bracing on rotated posts?

I'm adding X style cross bracing to an elevated playhouse to increase stability. The deck sits 8' up on joists, which are on two beams, which are on posts. Problem is, the posts are sorta in a V shape ...
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3answers
113 views

Can I remove this post on the lower floor of a two-storey home?

In the living area of my house is this decorative rail and post. I want to remove them. While I suspect such a narrow, solitary post would not be made to bear a load, I am not a builder so I still ...
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1answer
32 views

How do I figure out if these walls are load-bearing?

My house is a bungalow built in 1917. There are pillars under a central beam in the basement supporting the first floor (marked in red in my little drawing.) There is nothing obvious supporting the ...
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1answer
125 views

Drywall is off, can this wall come out?

I know the most sure way to figure this out is to have an engineer look at this but am hoping to get some insight here from someone knowledgeable in this area. We live in a condo and have a truss roof ...
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1answer
23 views

Which foundation type for conservatory?

I live in a new property where due to the underlying characteristics of the land, piling was required for the foundations. Due to the additional cost, I'd like to explore what options for extension or ...
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130 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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