I-Joists: Difference between revisions
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*Menards - 16" at $134 65 series [https://www.menards.com/main/building-materials/trusses-i-joists-engineered-lumber/i-joists-rim-boards/3-1-2-x-16-i-joist-65-series/pji651632/p-1642874354850390-c-5662.htm]. 28' span for 40 psf live 10 dead, with 16 OC. 130 lb for 32', 100 lb for 24' | *Menards - 16" at $134 65 series [https://www.menards.com/main/building-materials/trusses-i-joists-engineered-lumber/i-joists-rim-boards/3-1-2-x-16-i-joist-65-series/pji651632/p-1642874354850390-c-5662.htm]. 28' span for 40 psf live 10 dead, with 16 OC. 130 lb for 32', 100 lb for 24' | ||
*Design guide - [https://cdn.menardc.com/main/items/media/INTER078/Install_Instruct/04-P3-Joist-Installation-Guide-US.pdf] | *Design guide - [https://cdn.menardc.com/main/items/media/INTER078/Install_Instruct/04-P3-Joist-Installation-Guide-US.pdf]. Chat tells me 90 series is also 7/16" web. [https://chatgpt.com/share/68474287-428c-8010-bff0-231b62b62be2] | ||
=Weight= | =Weight= | ||
Revision as of 20:23, 9 June 2025
- Menards - 16" at $134 65 series [1]. 28' span for 40 psf live 10 dead, with 16 OC. 130 lb for 32', 100 lb for 24'
- Design guide - [2]. Chat tells me 90 series is also 7/16" web. [3]
Weight
- 16" deep truss - For 7/16" OSB at 45 lb/sheet - we need 1.66 times sheet including bonding plates. Takes us to 151.5 lb per truss.
- 12" deep truss - For 7/16" OSB at 45 lb/sheet - we need 1 = 45 lb in OSB, and 8*9.6=76.8+45+4.5 total of 128 lb for 32' including bonding plates.
Design
- 34 span for 16" deep I joist (80 series) at 12" OC spacing. [4]
This is needed for 32' space.
- P3 Series 80 joist - all it says for P3 is that they are '3/8" web or greater'
- P3 80 series is 7/16" web [5]
