Good morning, I was asked a question a couple of days ago about the specific gravity of wood in relation to FIGURE 9.3.5.9.1. I think I understand what is being shown, but I would like verification. The tables within this figure showing through-bolts and lag screws in wood has a footnote that states the specific gravity of 0.35 was used in the table. It then states that a multiplier can be used for other types of wood. So, here in the west Douglas fir is the wood of choice. It has a specific gravity of 0.45. If I grasp this correctly, this allows me to use a multiplier of 1.17 to adjust the allowable loads found in the figure. For example a 1/2" through bolt in wood with a length of 1-1/2" is allowed 200 lbs when using angle C. Applying the multiplier increases that allowable load to 234 lbs. Do I understand this correctly? Thanks for your help.
Bob Knight, CET (208) 495-2057 [EMAIL PROTECTED] www.firebyknight.com No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.8/1287 - Release Date: 2/19/2008 10:55 AM _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
