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  #46  
Old 9/7/18, 9:15 AM
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Default Re: Questions of the week of 8/26/18

Quote:
Originally Posted by rlewis5 View Post
look at post #6.
He got the drywall joint question wrong. Not saying its irrefutable but my source for the gap is the Internachi education area. Internachi says 1/20" gap only, that's if you don't tape. Where 1/20" comes from and how you would measure that is beyond my comprehension. Things are strange in the Twilight zone.

1/20", I suppose you would need a metric rule.
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  #47  
Old 9/7/18, 9:49 AM
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Default Re: Questions of the week of 8/26/18

Isn't the correct answers D,D,E and AB?




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  #48  
Old 9/7/18, 9:52 AM
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Default Re: Questions of the week of 8/26/18

Never mind I see my mistake.




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  #49  
Old 9/7/18, 10:26 AM
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Default Re: Questions of the week of 8/26/18

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Originally Posted by plesieur View Post
He got the drywall joint question wrong. Not saying its irrefutable but my source for the gap is the Internachi education area. Internachi says 1/20" gap only, that's if you don't tape. Where 1/20" comes from and how you would measure that is beyond my comprehension. Things are strange in the Twilight zone.

1/20", I suppose you would need a metric rule.
I agree, I have never seen any drywall jobs done to those parameters.



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  #50  
Old 9/7/18, 10:46 AM
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Default Re: Questions of the week of 8/26/18

Ben Gromicko is the guy to ask where 1/20" comes from. Must be a typo as I thought tight is as good as it gets, who the hell would measure and prove between 1/16 and 1/20"?
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  #51  
Old 9/7/18, 11:11 AM
Daniel W. Levia, CMI, CCHI Daniel W. Levia, CMI, CCHI is online now
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Default Re: Questions of the week of 8/26/18

Isn't 1/20" about the width of my trowel?



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  #52  
Old 9/7/18, 11:30 AM
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Default Re: Questions of the week of 8/26/18

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Originally Posted by dlevia View Post
Isn't 1/20" about the width of my trowel?
Which trowel? Actually that makes sense. The drywall guys could use their knife blades to check tightness. Still is kind of odd though.
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  #53  
Old 9/7/18, 11:32 AM
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Default Re: Questions of the week of 8/26/18

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Originally Posted by plesieur View Post
Which trowel?
The one thats 1/20" thick/thin.



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  #54  
Old 9/7/18, 3:15 PM
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Default Re: Questions of the week of 8/26/18

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Originally Posted by jjonas View Post
The one thats 1/20" thick/thin.
Of course.
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  #55  
Old 9/7/18, 3:42 PM
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Default Re: Questions of the week of 8/26/18

The factory edge or the butt joints?
I have hung a lot of rock..Yep!




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  #56  
Old 9/8/18, 7:52 AM
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Default Re: Questions of the week of 8/26/18

I have been taught that a drywall assembly is not rated at all if the drywall is not at least taped. It does not matter how tight the joints are.




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  #57  
Old 9/8/18, 9:01 AM
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Default Re: Questions of the week of 8/26/18

Quote:
Originally Posted by mmaizel View Post
I have been taught that a drywall assembly is not rated at all if the drywall is not at least taped. It does not matter how tight the joints are.
You are right Marvin and it does not have a rating unless it is part of a tested assembly and in which case would be taped.
Drywall in itself is a fire resistant material only, but as soon as it becomes part of a tested assembly, it is given an hourly rating or minute rating.



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  #58  
Old 9/8/18, 9:39 AM
John Olson John Olson is online now
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Default Re: Questions of the week of 8/26/18

. Joints shall be taped or sealed. SPS 321.08(1)(a)2.b.b. Joints shall be fitted so that the gap is no more than 1 /20-inch with joints backed by either solid wood or another layer of drywall such that the joints are staggered.
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  #59  
Old 9/8/18, 10:11 AM
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Default Re: Questions of the week of 8/26/18

Wonder if that is where Ben got the info for that 1/20.?



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  #60  
Old 9/9/18, 9:06 AM
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Default Re: Questions of the week of 8/26/18

Quote:
Originally Posted by mcyr View Post
Wonder if that is where Ben got the info for that 1/20.?
What, you guys don't measure the joint, I always do with my Polish ruler which grades the inch into 20 units. That's the kind of inspector I am.
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