4 ms·
Wow. I wish I had time in the day to look at NFPA (Nat'l FIre Protection Assn) standards. 1931, 1914, and 1911 seem pertinent - this is clearly something that m
by throwaway5752 8y ago
Wow. I wish I had time in the day to look at NFPA (Nat'l FIre Protection Assn) standards. 1931, 1914, and 1911 seem pertinent - this is clearly something that many people have devoted a lot of time and energy to.
edit: http://tkolb.net/safety/LadderSafety/LadderSafety.html http://tkolb.net/safety/LadderSafety/LadderSafety.html ... can't vouch for site but interesting.