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#66460 - 06/05/06 01:23 AM Drilling Glulams  
Trick440  Offline
Member
Joined: Aug 2005
Posts: 248
Waterford, MI, USA
I know I asked before here about drilling lams and was refrenced to the drilling of engineered joists thread. So here is the proper information. Page 19.
http://www.rosboro.com/techref-glulam/techguide060326.pdf


Shake n Bake

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#66461 - 06/05/06 07:03 AM Re: Drilling Glulams  
e57  Offline
Member
Joined: May 2003
Posts: 2,876
S.F.,CA USA
They are all brand specific, another manufacturer may require/allow something else.


Mark Heller
"Well - I oughta....." -Jackie Gleason

#66462 - 06/05/06 08:58 PM Re: Drilling Glulams  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
I'm going to have to disagree about that "manufacturer specific" caution.

The sheet referred to in this thread, as wellas other artwork referred to in discussions about I-joists, are nothing more than gussied-up versions of what is available from www.apawood.org

This is the website of the "Engineered Wood Association," a trade association that operates in a manner similar to NEMA. It is safe to consider their info to be "industry recognised consensus standards."

Of course, you still have to know the material you are dealing with!


#66463 - 06/05/06 11:20 PM Re: Drilling Glulams  
e57  Offline
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Joined: May 2003
Posts: 2,876
S.F.,CA USA
"know the material" And its loading, and, and, and.....

The safest bet is always the engineer responcable, and if not the data for THAT manufacturer, as 'gussied up' wont cut the mustard when the big $$$ back charge is in contest. CYA!

[This message has been edited by e57 (edited 06-05-2006).]


Mark Heller
"Well - I oughta....." -Jackie Gleason

#66464 - 06/06/06 04:22 PM Re: Drilling Glulams  
Trick440  Offline
Member
Joined: Aug 2005
Posts: 248
Waterford, MI, USA
If your pushing the limit with 1 1/2" bits, multiple holes, etc. you should use the data from that manufacturer.

If you stay safely in the guidelines. Your good.

Know the material.. its wood. With a round hole. The info from the Glulam and I joists is relative in 1 main way. Stay in the middle.

Other manufacturer specs should be close to, if not the same.

IMO.


Shake n Bake

#66465 - 06/06/06 11:21 PM Re: Drilling Glulams  
BigB  Offline
Member
Joined: Mar 2004
Posts: 719
Tucson, AZ USA
What about the glulams with the pre stamped holes every 18 inches or so? They are not really punched thru very far, but are they intended to be knocked out (more like beat out) with a hammer? Is it okay to knock them out from any section, since they run the full length of the beam?


#66466 - 06/07/06 03:53 PM Re: Drilling Glulams  
Trick440  Offline
Member
Joined: Aug 2005
Posts: 248
Waterford, MI, USA
BigB thats the I joist we are talking about. I call em engineered floor joists.. but don't really know what they are called.

Heres the link for that tread. https://www.electrical-contractor.net/ubb/Forum1/HTML/006716.html

After re reading that thread I see e57's has a bunch of bad stories about drilling lams.


Shake n Bake

#66467 - 06/07/06 07:41 PM Re: Drilling Glulams  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Whatever the rules may be, one thing drilling structural members and roofs have in common is:

If you screw up, it's going to cost you plenty to get it fixed if you're wrong.Be double sure you're right!

[This message has been edited by renosteinke (edited 06-07-2006).]


#66468 - 06/08/06 07:45 PM Re: Drilling Glulams  
George  Offline
Member
Joined: Feb 2002
Posts: 375
If the structure is engineered, you need permission from the engineer before you can put any holes in any member.


#66469 - 06/09/06 12:17 AM Re: Drilling Glulams  
e57  Offline
Member
Joined: May 2003
Posts: 2,876
S.F.,CA USA
"I see e57's has a bunch of bad stories about drilling lams"

Darn straight I do!

I even know a good post tension story, I was in the building at the time, and knock on wood it wasn't me. [Linked Image]


Mark Heller
"Well - I oughta....." -Jackie Gleason

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