emart0429
Structural
- Mar 22, 2007
- 10
Sorry if this has been asked and answered before, but I'm not finding it in any searches. I'm looking at fall protection requirements in OSHA Part 1926 and run into an appendix B which lists wood, pipe, and steel rail sections OSHA says meets their requirements for guardrail. Here's a link to the sections: 1926 Subpart M App B
The question I have is on the requirements for the wood members. It lists a 1500 lb-ft/in2 construction grade lumber. Here's a quote from App B, "Wood components shall be minimum 1500 lb-ft/in2 fiber (stress grade) construction grade lumber; the posts shall be at least 2-inch by 4-inch (5 cm × 10 cm) lumber spaced not more than 8 feet (2.4 m) apart on centers; the top rail shall be at least 2-inch by 4-inch (5 cm × 10 cm) lumber."
What is "1500 lb-ft/in2 construction grade lumber?" Construction Grade DF-L or HF (most popular materials around here) only have a Fb value of around 1000 lb/in2 which makes me wonder why OSHA has the units listed as lb-ft/in2?
Anybody have any experience with this?
Thanks,
Erik
The question I have is on the requirements for the wood members. It lists a 1500 lb-ft/in2 construction grade lumber. Here's a quote from App B, "Wood components shall be minimum 1500 lb-ft/in2 fiber (stress grade) construction grade lumber; the posts shall be at least 2-inch by 4-inch (5 cm × 10 cm) lumber spaced not more than 8 feet (2.4 m) apart on centers; the top rail shall be at least 2-inch by 4-inch (5 cm × 10 cm) lumber."
What is "1500 lb-ft/in2 construction grade lumber?" Construction Grade DF-L or HF (most popular materials around here) only have a Fb value of around 1000 lb/in2 which makes me wonder why OSHA has the units listed as lb-ft/in2?
Anybody have any experience with this?
Thanks,
Erik