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Questions tagged [joists]

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

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2answers
392 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
235 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
124 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
75 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
483 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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0answers
190 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
138 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
183 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
123 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, ...
1
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1answer
355 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
33 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
87 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
93 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
133 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
163 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
702 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
41 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
65 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
242 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
561 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
765 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
167 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
595 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
410 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
48 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
358 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
187 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
380 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
76 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
7k 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
108 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
498 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
673 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
630 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
158 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 ...
2
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1answer
436 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
580 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 ...
1
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1answer
684 views

screws, bolts or nails for ground level deck framing

Following up framing for ground level deck I'm putting 2x8 for framing of the ground-level deck, it is a floating deck, i.e. not attached to the house. So, 2x8 joists will be sitting around perimeter ...
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1answer
1k views

Wall Removal - Not Load Bearing - Keep Ceiling Joists

DIYer here and recently bought a fixer upper. I'd like to remove the wall between the kitchen and the livingroom. I'd like to complete this project soon so I can insulate the attic. My home inspector ...
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0answers
140 views

Sealing fully cast-in floor joists

My house built in 1928 has concrete filled spaces between the floor joists and rim joist. There are gaps in some of them, some 1" wide with most being very small. I suspect these gaps could be the ...
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2answers
136 views

How Do Houses Prevent a Water Buildup in the Flooring?

I have been reading Canadian Wood-Frame House Construction to get an idea how houses are built and function, and am really confused about one aspect. External floors are built just like external ...
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1answer
403 views

How do I mount a TV bracket to a plasterboard/drywall ceiling?

I'm really just looking to confirm what I assume is the best way to do this. I don't know what the total weight will be but the bracket is rated for 30kg (66lbs), so let's assume the TV is the ...
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2answers
291 views

Trying to Determine if Attic Braces and Collar Ties are Structural

I have a 1924 house. The attic has 2x4 ceiling joists with 1x4 collar ties about 80" above the joists. The slope of the roof is 20/12. Below the collar ties there are two crossing 1x4 braces that ...
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2answers
421 views

Recessed beam where joists meet in center of room

First. I am getting a contractor. I like to have a good idea what I am dealing with so I can understand what 1,2,3 contractors with estimates propose to me. Ranch house with Cape Cod roof sitting on ...