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DukeLewis87 07-06-2013 11:07 AM

Length for? Quick question
 
16" center floor joists


Anyone know right off hand what would be the ? for Herringbone Strut?

Length = ?
Angle Deg = ?

How often should I have a Herringbone Strut over a 16' Span?

DukeLewis87 07-06-2013 11:08 AM

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Picture:

DukeLewis87 07-06-2013 11:29 AM

Or someone mind telling me how to figure it out with a 6" square maybe?

kwikfishron 07-06-2013 11:45 AM

Just lay a couple of short cutoffs of the joist stock on a table at 16"oc then lay a piece of the strut stock on that and scribe the angle. You could do the same thing just by drawing it out too.

ddawg16 07-06-2013 01:35 PM

On the distance....I think it's every 8'. In your case....with a 16' span....blocking in the middle.....I think....

MTN REMODEL LLC 07-06-2013 02:27 PM

Just curious....

Anyone know if there is any structural advantage to using Xbracing verse solid blocking..... (I've seen solid called out in Cali.... don't think I've ever seen X called out (just blocking) (except on TJ's maybe)

:huh::huh:

Duckweather 07-14-2013 10:44 PM

Around New England it is called cross bridging. It does not have to be exact length to work, it only looks neater. Some joist spaces may vary a little so we used to make it flush at the top with all landing about 1/4" above the bottom of the joists. Cross bridging works under compression from top of one joist to the bottom of the two adjacent joists. Nailing the ends tight is more important than being the exact length. Solid bridging or blocking prevent the rectangle space between joists from becoming a parallelogram thus spreading the load over several adjacent joists. They should all be cut individually so they are tight but not tight enough to push the joists apart. They should be center of any span over 10' and divided in thirds over 16'. But check your codes because some spans under 16' may call for two rows.

Duckweather 07-16-2013 04:02 PM

In case anyone else reads this, cross bridging should be installed in pairs on alternate sides of a line with tops and bottoms directly opposite each other. Solid bridging is easier to nail if alternately staggered to either side of a line

ddawg16 07-16-2013 09:53 PM

Quote:

Originally Posted by Duckweather (Post 1216716)
In case anyone else reads this, cross bridging should be installed in pairs on alternate sides of a line with tops and bottoms directly opposite each other. Solid bridging is easier to nail if alternately staggered to either side of a line

I did all my blocking in a straight line.....it was easy to nail...just line up the nailer at a slight angle from the other side and hit it. The staggered blocking bugs me. I like things lined up.

MTN REMODEL LLC 07-16-2013 10:26 PM

Quote:

Originally Posted by ddawg16 (Post 1216868)
I did all my blocking in a straight line.....it was easy to nail...just line up the nailer at a slight angle from the other side and hit it. The staggered blocking bugs me. I like things lined up.


"I like things lined up".... me too...like beers on the bar.:yes:

Duckweather 07-17-2013 10:38 AM

But if some are new enough to ask some of these questions they probably don't have the experience or tools capable of doing what a pro easily can.

ddawg16 07-17-2013 10:56 AM

Quote:

Originally Posted by Duckweather (Post 1217031)
But if some are new enough to ask some of these questions they probably don't have the experience or tools capable of doing what a pro easily can.

Ever hear the expression "You learn by your mistakes"?

Why do you think I'm so bloody smart now?

Have to start some where.....I'm an engineer...(among other things). I'm doing this for fun....I'm not fast...and I doubt I could make a living at it....but I'm having fun...and getting a lot of free advice here....:drink:

btw mods....we need the :beer: icon.....

Duckweather 07-18-2013 08:46 AM

I'm not fast but I'm not slow. Sometimes I am half fast though.

Gary in WA 07-26-2013 11:27 PM

Quote:

Originally Posted by MTN REMODEL LLC (Post 1212307)
Just curious....

Anyone know if there is any structural advantage to using Xbracing verse solid blocking..... (I've seen solid called out in Cali.... don't think I've ever seen X called out (just blocking) (except on TJ's maybe)

:huh::huh:


http://www.ewpa.com/Archive/2004/jun/Paper_278.pdf

Gary


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