some scaffs still span the planks ( laminated ply ) 2.4m in new zealand
The laminated hy-planks (2 inch) are rated to span 2-4m. Have seen some very old ones in use though which may be dodgy.
Dont quote me HSWT but I believe OSHA testing allows a 10ft span on inch and a half boards. I would need to look that up to be honest?
He wants steel boards but has he worked on them in winter?
Just bought a load of them but only the 4 footers as we are trying to get a way from timber in system. Can't understand the difference in width.![]()
The old SGB Steel Battens were 238mm wide, I would take a stab and say the timber must allow for water intake and thus swells more than a steel board expands in the heat.
Only a guess though