• Manufactured in a factory approved by WH
• The quality control and inspection are ongoing processes in the fabrication of the Superior I Beam.
• The web and flanges of the SIB are mechanically bind together by a patent pressured joint that is glued.

Other caracteristics:

• Light therefore easily be carried by one worker 
• Easy to install 
• Regular and stable dimensions.
• Allows wire and plumbing holes
• Can easily be cut on site to adjust to desired lenght.
• Increased nailing surfaces (2 1/3" and 3 1/2")

• SIB 30: 2x3 SPF no 2 or better flanges. High performance ( 3/8") Oriented Strenght Board web (OSB) and beams are available in 4 heights: 9 1/2",11 7/8", 14", 16".

• SIB 41: 2x4 MSR  2100 flanges (machine stress rated lumber) mechanically classified. High performance ( 3/8") Oriented Strenght Board web (OSB) and beams are available in 4 heights: 9 1/2",11 7/8", 14", 16".

allowance table span

Canadian

American

CCMC 12751-R

SBCCI Research Report 2012