Girder Or No Girder?
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Old 04-20-2009, 06:53 PM   #1
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Girder Or No Girder?

Im building a deck that is 28.5' long 17' of it will be 16' out and then 11.5' of it will be 20' out. Question is do i need a girder under 2x8 joist spanning 16 to 20' And if so what is the best cheapest way of doing it. Also what is the best way to scab 4' onto a 16' board to span 20'? Thanks in advance!

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Old 04-20-2009, 07:10 PM   #2
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Re: Girder Or No Girder?

what is the best way to scab 4' onto a 16' board to span 20'?
Nail a 20 footer to the side of it.
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Old 04-20-2009, 07:11 PM   #3
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Re: Girder Or No Girder?

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Originally Posted by kmyers View Post
Im building a deck that is 28.5' long 17' of it will be 16' out and then 11.5' of it will be 20' out. Question is do i need a girder under 2x8 joist spanning 16 to 20' And if so what is the best cheapest way of doing it. Also what is the best way to scab 4' onto a 16' board to span 20'? Thanks in advance!
Just use some silicone caulk on both ends of the board and hold it for like 10 seconds, should be strong and you don't even need to use nails.


Oh yeah, sounds like you're in over your head.
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Old 04-20-2009, 07:12 PM   #4
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Re: Girder Or No Girder?

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Originally Posted by loneframer View Post
what is the best way to scab 4' onto a 16' board to span 20'?
Nail a 20 footer to the side of it.


Look below you, just use silicone or any type of caulk on the endgrain of both boards.


Oh, I just read that's painters caulk is stronger, use that!
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Old 04-20-2009, 07:15 PM   #5
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Re: Girder Or No Girder?

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Look below you, just use silicone or any type of caulk on the endgrain of both boards.


Oh, I just read that's painters caulk is stronger, use that!
What about the girder? Silly string?
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Old 04-20-2009, 07:49 PM   #6
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Re: Girder Or No Girder?

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What about the girder? Silly string?

Actually, yes.
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Old 04-20-2009, 07:52 PM   #7
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Re: Girder Or No Girder?

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Actually, yes.
Great for locating trip wires also.
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Old 04-20-2009, 08:07 PM   #8
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Re: Girder Or No Girder?

I found my crystal ball.
I rubbed it real good and this is the image that came up.
Anybody have any idea what it means?

Girder or no girder?-deck-collapse.jpg
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Old 04-20-2009, 08:09 PM   #9
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Re: Girder Or No Girder?

Gorilla Girder Glue
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Old 04-20-2009, 08:12 PM   #10
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Re: Girder Or No Girder?

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I found my crystal ball.
I rubbed it real good and this is the image that came up.
Anybody have any idea what it means?

Attachment 17936
Catastrophic failure?
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Old 04-20-2009, 08:15 PM   #11
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Re: Girder Or No Girder?

Quote:
Originally Posted by Gus Dering View Post
I found my crystal ball.
I rubbed it real good and this is the image that came up.
Anybody have any idea what it means?

Attachment 17936
I'm surprised those balcony decks with the knee braces are still there, WOWIE, what the FFG
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Old 04-20-2009, 10:30 PM   #12
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Re: Girder Or No Girder?

Quote:
Also what is the best way to scab 4' onto a 16' board to span 20'? Thanks in advance!
come on guys!Give the poor guy a break. He is obviously a professional who just needs a little info.

I would the Tico brand scab nails, about 8d should do it. then just toe nail the two ends together and voila! Instant 20' beam. I hope this helps.

Andy.
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Old 04-20-2009, 10:35 PM   #13
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Re: Girder Or No Girder?

Quote:
Originally Posted by Gus Dering View Post
I found my crystal ball.
I rubbed it real good and this is the image that came up.
Anybody have any idea what it means?

Attachment 17936
That was the place in Boston ? if I remember correctly.
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Old 04-20-2009, 10:35 PM   #14
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Re: Girder Or No Girder?

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Originally Posted by ScipioAfricanus View Post
come on guys!Give the poor guy a break. He is obviously a professional who just needs a little info.

I would the Tico brand scab nails, about 8d should do it. then just toe nail the two ends together and voila! Instant 20' beam. I hope this helps.

Andy.
Wouldn't you recomment Gorilla Butt Glue to compliment the Teco scab nails.
I would also mount to the rim with 44-D Hooter Clips
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Old 04-20-2009, 11:52 PM   #15
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Re: Girder Or No Girder?

Loneframer I think you way over build this stuff but better safe than sorry.

Andy.
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Old 04-20-2009, 11:59 PM   #16
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Re: Girder Or No Girder?

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Originally Posted by kmyers View Post
17' of it will be 16' out and then 11.5' of it will be 20' out. Question is do i need a girder under 2x8 joist spanning 16 to 20'
You've got a bigger problem than cantilevering 2x8 joists 4' over your beam (which is doable - not recommended, but doable)...
you're thinking of spanning 16' w/ 2x8s.
Even if you spaced them 12" oc, your max span is 14'-2 w/ SYP.


Mac
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Old 04-21-2009, 12:14 AM   #17
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Re: Girder Or No Girder?

Mac, where'd you get the calculator?
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Old 04-21-2009, 12:23 AM   #18
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Re: Girder Or No Girder?

Quote:
Originally Posted by loneframer View Post
Wouldn't you recomment Gorilla Butt Glue to compliment the Teco scab nails.
I would also mount to the rim with 44-D Hooter Clips

I am gonna buy some gorilla butt glue first thing tommorrow.


What kind of tacos were you talking about?
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Old 04-21-2009, 12:27 AM   #19
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Re: Girder Or No Girder?

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Mac, where'd you get the calculator?
x2.
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Old 04-21-2009, 01:03 AM   #20
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Re: Girder Or No Girder?

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Mac, where'd you get the calculator?
http://www.awc.org/calculators/span/...rcalcstyle.asp

Mac
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