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Author Topic: ok.. heres a quandary on a shop build  (Read 676 times)

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Offline tareece

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ok.. heres a quandary on a shop build
« on: February 06, 2017, 03:22:53 pm »
Hey all.
   I am coming back from a series of back injuries where i blew out 5 vertebre and had a severe injuries to both hips..

   Now getting past all the ouchs that u nice people will say.. i have a problem.
   I was getting close to finishing the floor on my shop build when this happened... but the floor and most framing wood have been un protected since May 2014.
   So, do i scrap the floor and repurchase all my lumber.. or can i use it?
   The floor( made of 3/4 untreated plywood) seems to be firm... but a couple of pieces have some upper "buckling"  or Seperation...
   Trust me... if it werent for the injuries.. this post and thread would be about a showplace success story...
    Any help is appreciated
   
   
Todd Reece
Lover of many things. Experienced in most... expert in few

Offline Den-Den

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Re: ok.. heres a quandary on a shop build
« Reply #1 on: February 06, 2017, 09:35:00 pm »

Based on the information in your post, I suggest these priorities:
1.  Take care of your back
2.  Get the shop dried in
3.  Decide how many sheets of flooring need replacing
You may think that you can or may think you can't; either way, you are right.

Offline Brian_Weekley

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Re: ok.. heres a quandary on a shop build
« Reply #2 on: February 06, 2017, 09:35:57 pm »
Might help if you post some photos--not sure exactly what you mean.  Was the floor installed and exposed to traffic or weather or was the wood left outside and exposed and is waiting for installation?
e aho laula

Offline tareece

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Re: ok.. heres a quandary on a shop build
« Reply #3 on: March 23, 2017, 11:52:51 pm »
Here are a couple of pics
These are some of the 2x4's I have... Look bad but were kept off of ground on lvl blocks... One was strong enough to use as lever to raise aone end of floor assembly up so I could put a block under it.


Here is the current floor... I've purchased another 3/4 in weathered treated 4x8 plywood..

   At most I will lose 9 pieces of plywood... Plus 50 2x4s... Not a huge loss, but still $$$ I can use elsewhere.
Todd Reece
Lover of many things. Experienced in most... expert in few

Offline Don P

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Re: ok.. heres a quandary on a shop build
« Reply #4 on: March 24, 2017, 08:08:55 am »
Really, 2x4's aren't floor or even roof material when new unless the spans are tiny. a 2x6 blows out at 8' a 2x8 at 12' in southern pine. Call that a wall and tip it up on the new floor would be my guess.

Don't know if that is temporary but blocks have just about no strength on their sides, notice the 2x4 sag between support with no real load on the floor. Shops get very heavy very quick.

Offline flyingparks

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Re: ok.. heres a quandary on a shop build
« Reply #5 on: March 24, 2017, 10:26:14 am »
Agree with Don P. 2x4s are for interior walls. A good rule of thumb for spans is take have of the width of the nominal lumber and and at it to the total width and that gives you your max span in feet. Example: 2x4 - 6 feet, 2x6 - 9 feet, 2x8 - 12 feet, etc. Not an exact span but good for a quick ballpark estimate. If you are building a shop there will be quite a bit of weight on it. I would want to start with a good foundation. Chalk-up what you have as expensive fire wood or salvage the 2x4s for a wall, assuming you didn't glue the subfloor. My 2 cents.
Ain't gotta read between the lines, just gotta turn the page.

Offline tareece

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Re: ok.. heres a quandary on a shop build
« Reply #6 on: Yesterday at 02:42:34 pm »
Whoa.. sorry... The 2x4's were for interior walls.. my floor have treated 4x4's throughout...
   I took the picture after I started to lift the foundation another 6".
  I found these 4x4's at Lowe's and a couple were bowed
Todd Reece
Lover of many things. Experienced in most... expert in few

Offline Don P

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Re: ok.. heres a quandary on a shop build
« Reply #7 on: Yesterday at 10:11:35 pm »
Old carpenter know how stuff, I'll make up an example to help think about it.
If you assume the same load per square foot, I used a residential floor load of 50 pounds per square foot, and assuming the same strength and stiffness for the wood itself. A 4x4 joist set 16" on center can span around 8'. A 2x8 can span about 12'. There is less wood in the 2x8 and yet it can span half again further. There's an old saying in construction "Deeper is cheaper". You pick up bending strength and stiffness faster going deeper rather than wider. As the loads and spans increase it can catch up to you pretty fast.

Offline flyingparks

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Re: ok.. heres a quandary on a shop build
« Reply #8 on: Yesterday at 11:45:19 pm »
Framing a floor with 4x4s. Pretty much like framing it with 2x4s.
Ain't gotta read between the lines, just gotta turn the page.