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Re: Lag screws in Microlam and Paralam

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Actually, I think the values are independent of grade, and depend only on G (normally taken as 0.5 for engineered lumber). You can find the values in the NDS. Remember that you need 8d to get the values in the table, and 4d to get any capacity at all, which means no using 1/2" diameter lags in single LVLs, and the 3/8" dia lag values will be somewhere around 70lbs each. I'm not aware of as-tested values for LVL or PSL, but TrusJoist has published "maximum span" numbers for deck ledgers attached to LSL rimboards at 40psf and 60psf.

Jordan

Daryl Richardson wrote:

James,

MicroLam's are Douglas Fir. The lamination process reduces defects, sometimes substantially. Barring other information I think you could use the values for select structural grade Douglas Fir. Alternatively, you could contact the manufacturer; they will have all the information you could desire.

Regards,

H. Daryl Richardson

----- Original Message ----- From: "jascopac" <jascopac(--nospam--at)pacbell.net>
To: "Seaint@Seaint. Org" <seaint(--nospam--at)seaint.org>
Sent: Tuesday, May 30, 2006 11:55 AM
Subject: Lag screws in Microlam and Paralam


Where can I find values for the capacity of lag screws in Microlam and
Paralam products?
The project is in California.

God bless all of the service men and women who gave their lives for our
country!


James A. Sadler, SE
Jasco Pacific, Inc.
550-D Industrial Way
Fallbrook, CA 92028
1-760-723-8135
1-760-723-8136 Fax
jascopac(--nospam--at)pacbell.net



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