Questions tagged [joists]

Horizontal support structures beneath the floor running between load bearing walls.

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1answer
77 views

Joists to binder - best way to attach

I am planning to fit some binders to support sagging ceiling joists and want to know the best way to join the joists to binders. The joists are C16 4x2 and span over 4 meters! The house was built in ...
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3answers
139 views

maximum ceiling joist to beam span without joist hangers

I'm building a tray ceiling and the assembly is easy to visualize. In a 14' x 14' dining room, I'm coming in 18.5" to the inside of the beam on 2 sides with a 2x10, and then similarly cross-wise ...
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18 views

Creak in the floor along a joist

In just one spot in one of my bedrooms I have a creak when I step on the floor. The creak is in sort of a line for 4 or 5 feet, so I suspect it is caused by a particular joist that lies below that ...
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3answers
200 views

Repairing Hole Drilled Vertically in Joist

I'm remodeling my kitchen and pulled up the old flooring down to the joists. I discovered that a hole was drilled down into one of the joists, nearly 3/4 of the entire height of the joist. The joist ...
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2answers
167 views

Drywall installation when ceiling joists lower at the edge

I am trying to install ceiling drywall and everything is fine until I reach the edge. You can see there are 3 2x8 joists at the edge and it's somehow positioned 1/2" to 1" lower than the rest. So my ...
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1answer
189 views

How do i waterproof the joists under my bathroom floor?

How do I waterproof the joists under my bathroom floor? I recently decided to replace the floor tiles in my bathroom and found that there had been a leak under the shower. This has meant that the ...
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1answer
56 views

Mounting a Projector on a joist - Is Joint Integrity still ok?

I am mounting a projector on the ceiling in my single story extension with a sloped roof. My luck had it that there was a joist within range and I proceeded to drill into it from below through the ...
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2answers
441 views

Should I upgrade 2x6 attic floor joists by sistering some or all with 2x8s?

Our 1938 cape cod has an attic that was converted to master suite (who knows how long ago), but we've been living there for over a year. We have since decided to gut the entire upstairs and put in a ...
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1answer
260 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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1answer
135 views

Why would my garage have separate ceiling joists suspended below larger floor joists?

I am in the middle of building a complex storage rack system in my garage. I ran 2x4 "sleepers" across the ceiling and tied into every floor joist. My shelving system is anchored to this. Here is ...
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1answer
87 views

Replacing deck joist - board width mismatch

I am working on replacing decking and found a couple of rotted joist I decided to replace as well. The joist size is 2x8-12. I purchased the replacement joists however when I took one rotten out and ...
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1answer
553 views

How to connecting addition frame to existing rim joist

We have an addition that we are adding to our house. We built a new foundation (J-shaped, see image below). Building the floor frame over the new foundation will be done with the standard sill plate ...
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216 views

Gap between Joist and sill plate

I purchase a new home and in the basement I'm finding a section of cracked/split joists where the nail was nailed into the wood sill plate. After investigating, this one wall was not leveled with the ...
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1answer
154 views

Removing 2x4 strapping and still meeting Ontario building code

I am finishing a basement ceiling in a new house. Currently there is a 2x4 used as strapping in the center of the area for the above floor joists. I want to remove it but dont want to create issues. I ...
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2answers
251 views

Nailing a joist hanger to ledger with concrete behind

So I've got a 2x10 Ledger attached to a concrete wall. I have a double 2x10 joist that needs to connect to the ledger. I have a joist hanger for this but the installation requirements say to use 16d ...
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1answer
141 views

Can I remove blocking to level floor and sister this joist?

I'm replacing hardwood flooring but the subfloor isn't flat. In the area above this picture, I can slide two fingers under a 6 foot framing level that's laying perpendicular to the joists. That spot, ...
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1answer
386 views

Ceiling mounted punching bag without compromising structure or floor above

This question is regarding the safest way of installing a heavy punching bag of 100 lbs from the basement ceiling. Above the basement ceiling is a wood floor. The goal is to sleep soundly at night ...
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1answer
34 views

Allowable load tables based on usage

When looking at allowable load tables from Simpson for their joist hangers, why are there different numbers for different cases, even though the force is in the same direction? For example, the LUS24 ...
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2answers
131 views

Deck Joist Hanging Options

I am trying to design a replacement deck for my home. Local regulations require IRC 2015 and the area is designated SDC D2. The surface height of my deck will be ~8' 8" above grade and there is a ...
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1answer
82 views

Are these joists to code?

I am resurfacing my deck and have applied for a county permit to do the work (therefore it will be inspected). I have a protrusion at my house to support a chimney. The size of the protrusion is ...
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0answers
74 views

What is the role of this telescopic pole-looking item in the ceiling?

I've recently viewed a property and done a first pass at the work that will need doing. But, I noticed this in the ceiling of the stairwell and I'm not entirely sure of a few things: What exactly is ...
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1answer
1k views

How to Pocket joist into double Wythe solid Brick wall?

I have a project in which I am relocating a staircase in a home I recently purchased. The engineer's drawings show the joists being pocketed into the walls. My original understanding was that you ...
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1answer
94 views

After 1 year, how much gap between members is acceptable in light framing?

Many of the connections between various members (rafters, collar ties, joists, studs) in the attic of a newly constructed small barn (~1 car garage) have grown over the past year. In short, the ...
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1answer
143 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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1answer
194 views

How can I even out my subfloor?

I bought a fixer-upper knowing little about how much of a headache I was creating for myself. I've recently removed the hardwood flooring that was lain directly on the joists (no subfloor) of my ...
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3answers
872 views

Correct way to use jack post

These photos show the way the previous owners of my house used a jack post to brace sagging floor joists. I'm not sure of their method, so I wanted to check what the correct method is. Angle 1 ...
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1answer
43 views

Can I carve a portion out of the side of a floor joist to accommodate a Fernco Clamp

I am tying a pvc sanitary tee into a 3" copper DWV line which runs along a floor joist (2x12) in the ceiling of my basement. I plan on using a fernco shielded coupler 3007-33 (https://www.fernco.com/...
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1answer
73 views

how to identify lumber grade of unmarked ceiling joists

I have a detached garage that I'd like to finish the attic space to make into a office like workspace. The garage ceiling joists are 2x8x14' (unnotched) with a 13'6" span on 16". The joist appear to ...
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2answers
284 views

How to replace porch joists?

My covered porch has seen some better days. The 2x10 joists are rotted on top causing the wood on top to sag. The 2x10 is notched and inserted into the brick on both sides. I have a feeling that this ...
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2answers
678 views

Romex cable tidying in basement

Old house, crazy town in the basement in regards to wiring. I'd like to clean it up a little, at least visually - happy to get contractor out if needed - but not sure what to ask for. So what would be ...
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1answer
818 views

Attic Floor Joist - Structurally Secure

I am helping my son remodel the 70 year old house that he just purchased. He is planning on expanding on the attic on his second floor. The current ceiling joist are 12'- 2"x6" with the old plaster ...
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2answers
177 views

What to be done about cut I-joists? Cut is in lower flange above load bearing point

I am a first time homebuyer in the due diligence phase with this house. We identified in the crawlspace that a few of the I-joists had been cut, looks like with a reciprocating saw, for unknown ...
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1answer
640 views

how to run ceiling joists across a 15' room with no ceiling [closed]

removed some metal T system drop ceilings now I want sheetrock but not sure best way to run ceiling joists across 15' room if I go with 8' 2x4 how do I tie them together towards center of room to ...
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2answers
517 views

What is involved with replacing floor joists [closed]

I need to replace 3 joists on the second story of our 2 story + basement 1920s townhouse. The joists are rotted on one side all the way into the cement block wall. There is not enough good wood to ...
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1answer
52 views

Extending joists to reach a new beam. What code to review?

I have spoken with a contractor about removing two load bearing walls (amongst other work). The two load bearing walls are parallel but offset by two feet to provide space for a range/oven in the ...
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1answer
389 views

Are floor joists allowed by code to be notched at the ends?

I'm repairing termite damaged floor joists in the crawl space a 1940s house. At the chimney, there are double 2x10 trimmers and headers as you would expect but on each side of the chimney one of the ...
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4answers
197 views

Would two 1x10 placed together be as strong/load bearing as one 2x10

I have a rotted joist in my floor that I can access through my basement, but is above several pipes. I could squeeze a 1x10 through the gaps but can't get a 2x10 to fit. So wondering if I got two 1x10 ...
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2answers
439 views

Does cutting into a joist too close to the top ruin it?

A "carpenter" did this to a big double joist in my house (top floor), I was under the impression that one does not cut a hole this close to the edge of a joist, especially not one this big! Should I ...
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1answer
83 views

Joists extended by tecos

I recently purchased a house and have noticed the floors seem to sag in certain spots. I notice in the basement that there are several sections where the joists were cut and then extended via tecos to ...
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5answers
2k views

Resting joist hanger on top plate?

I'm building a lumber-framed office inside a commercial warehouse. It's essentially an 8' x 30' x 9' box with a ceiling and "second floor" made of 2x6" joists, with 2x6" rim joists resting on top of ...
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2answers
8k views

How much can I safely suspend from ceiling joist? Which screws?

I want to hang a motorized projector screen on my basement ceiling. I'd like to know how much weight I can safely hang from the ceiling (joists? See picture below. Arrow marks the spot I'd like to ...
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1answer
111 views

Sagging Floors and loose floorboards

My house is about 118 years old and I can tell from all around the house that there seems to be a sagging on my floors in one specific area. This sagging is obvious in the first and second floor. Now ...
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2answers
527 views

Drill or notch joist?

Followup to another question where I asked about drilling diagonally up into the sole plate and joist (I think I got good answers but realized but didn't get a clear "it's ok to drill through the ...
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3answers
759 views

Would drilling a small hole through joist / sole plate cause structural problems?

New home owner. I need to wire some ethernet and coax across the basement up into to the first floor wall. The perimeter wall is cinderblock, it is a twin and this is the shared wall. It looks framed. ...
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2answers
2k views

Correct way to support a pipe run parallel to floor joists

I would like to install pipe parallel to the floor joists in my basement, and then conceal it behind drywall. I need to do this with both gas (black iron) and domestic water (copper) pipe. I'm ...
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3answers
2k views

Reinforce joist near rafter for porch swing

Recently purchased home and saw existing eye lag screw or bolt coming from front porch ceiling. Rolled the dice (hoping for bolt + reinforcement), did not remove vinyl ceiling to inspect carpentry. ...
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3answers
670 views

How to approach insulating my rim joist

I'm working on finishing my 1924 home's basement in Minnesota and am currently working on insulation. My rim-joists look like this: 2x8 Joists with a board between each joist. Behind that board is a ...
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2answers
196 views

Irregular/Atypical Deck Joist Spacing

I'm planning a replacement for my deck and ran into a question that I cannot find an answer to anywhere. Why does everyone place deck joists at either 16" or 24" OC (or sometimes 12"), but not 18" or ...
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1answer
495 views

How should I replace a cantilevered rim joist?

The rim joist on the front of my house has water damage and needs to be replaced. When I pulled off most of the rot, less than half the board's thickness remained. The floor is cantilevered about 3 ...
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2answers
669 views

Why are my joists smaller than standard size?

I was preparing to replace a cantilevered rim joist on my house today. I bought a 2x10 treated board to replace it. I cut a piece to use as blocking and found that the board was much wider than the ...