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RE: shear bolts- glulam

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Title: Message

You need to have vertically slotted holes in one glulam for shrinkgage.

 

-gm

 

-----Original Message-----
From: Andrew Kester [mailto:akester(--nospam--at)bbma.com]
Sent: Sunday, November 16, 2003 7:33 AM
To: seaint(--nospam--at)seaint.org
Subject: shear bolts- glulam

 

My situation is this:

 

I have a large horizontal (parallel to grain) shear in a glulam (caused by gravity loads, and uplift loads). I plan on using two rows of 3/4" bolts to resist this shear, with two steel side plates.

 

Using NDS, p. 73, Table 8.3D, normally the tables would have Z values parallel and perp. to grain, ie, with the || symbol for parallel to grain. But in this table, at least in my copy, instead of these symbols as subscripts I have " 1/2 1/2" and "^" ?? Am I to assume this is just a typo?

 

Is their anything I should know about shear connections parallel to grain in glulam? Is their any problems if the bolts end up at the lamination layer, or do I need a note not to install the bolts at the layer interface?

 

Andrew Kester, EI
Longwood, FL