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Old 02-17-2008, 09:17 AM   #1
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Need to make an ACTUAL 2"x6" joist


I have an old house(from the 1920's) and one of my floor joists is pretty rotted.

The actual joists are 2"x6" and they sit in stone/concrete seatings that are part of the structure of the first floor of the house.

I can't seem to find actual 2"x6" joists anywhere so i have decided to do the following:

buy a 2x8 and a small sheet of 1/2" thick plywood or something.

then glue/screw the 1/2" piece of wood to the end of the 2x8, then cut 1.5"s off of the height so that it is down to 6"

now the end of my joist should actually be 2"x6"

I am only doing this for one joist, not all of them. the unsupported span is only about 61"

Is this a terrible idea? Do I have any other options?

Attached is a picture of what I want to do
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Need to make an ACTUAL 2"x6" joist-joist.jpg  

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Old 02-17-2008, 10:04 AM   #2
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Need to make an ACTUAL 2"x6" joist


I would use pressure-treated 2X8" and 1/2" p-t plywood.
Pre-cut the plywood full size 6" X 61" less the notch(es) and glue (construction adhesive like Liquid Nails) it and (galvanized) screw it to the already ripped down and notched-to-fit 2X8 for permanent strength.
Then you'll never have to deal with again.
Good Luck!
Mike

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Old 02-17-2008, 10:06 AM   #3
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Need to make an ACTUAL 2"x6" joist


What Mike said.

(except use exterior screws rated for PT wood. I don't think Galvanized works. Have to get the coated kind or stainless.)
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Old 02-17-2008, 10:46 AM   #4
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Need to make an ACTUAL 2"x6" joist


Quote:
Originally Posted by Mike Swearingen View Post
I would use pressure-treated 2X8" and 1/2" p-t plywood.
Pre-cut the plywood full size 6" X 61" less the notch(es) and glue (construction adhesive like Liquid Nails) it and (galvanized) screw it to the already ripped down and notched-to-fit 2X8 for permanent strength.
Then you'll never have to deal with again.
Good Luck!
Mike

Mike,
Are you saying the plywood should be 6" the whole way(no notches)
or 7.5" the whole way, with 1.5 notches cut out on each end?
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Old 02-17-2008, 11:46 AM   #5
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Need to make an ACTUAL 2"x6" joist


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Originally Posted by DanBress View Post
Mike,
Are you saying the plywood should be 6" the whole way(no notches)
or 7.5" the whole way, with 1.5 notches cut out on each end?
Simpliest thing is to do 7.5 " the whole length and just notch the plywood at the same time you cut the joist notch.
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Old 02-17-2008, 03:54 PM   #6
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Need to make an ACTUAL 2"x6" joist


Buy a 3x8 and cut it down, a good lumber yard will have them. Why does it have to be 2" think? why does it have to be 6" tall? are you goin to see it from somewhere, if so why tack plywood to the side of it. Just sister a modern 2x6 to the side of it and wedge the ends up
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Old 02-17-2008, 04:37 PM   #7
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Need to make an ACTUAL 2"x6" joist


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Buy a 3x8 and cut it down, a good lumber yard will have them. Why does it have to be 2" think? why does it have to be 6" tall? are you goin to see it from somewhere, if so why tack plywood to the side of it. Just sister a modern 2x6 to the side of it and wedge the ends up
The joist sits in a stone/concrete foundation that is slotted for an actual 2x6". If i use a different size of wood, I am not sure how I would seat it in the foundation.
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Old 02-17-2008, 10:19 PM   #8
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Need to make an ACTUAL 2"x6" joist


use a 2x6 and place wdges under it to raise it into place, quick and easy. You could still place a 1/2" shim on the side if you want. evrything that touches concrete needs to be PT
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Old 02-17-2008, 10:27 PM   #9
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Need to make an ACTUAL 2"x6" joist


Call a structural engineering & architectual firm. Get at least 3 designs - stamped and approved.


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Old 02-18-2008, 08:02 PM   #10
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Call a structural engineering & architectual firm. Get at least 3 designs - stamped and approved.

Don't forget getting at least five bids from licensed, bonded, and insured contarctors.

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