Fixed Ladder - Stringer Extension Design (Walk-through)
Fixed Ladder - Stringer Extension Design (Walk-through)
(OP)
I am looking for design requirements for fixed, wall-mounted ladders, specifically the stringer extension that forms the walk-through at the top of the ladder.
OSHA and ANSI provide design requirements but do not specifically call out lateral loading at the top of the stringer end/walk-through. One could apply the IBC point loading for guard railing of 250 pounds. However, this loading would render any flat bar stringer extension unsuitable.
Any comments?
OSHA and ANSI provide design requirements but do not specifically call out lateral loading at the top of the stringer end/walk-through. One could apply the IBC point loading for guard railing of 250 pounds. However, this loading would render any flat bar stringer extension unsuitable.
Any comments?






RE: Fixed Ladder - Stringer Extension Design (Walk-through)
More often, it is possible to either support those bars by tying them into the platform guardrail or by a ladder cage.
RE: Fixed Ladder - Stringer Extension Design (Walk-through)
You're looking for a blame-free design-by-rulebook or design-by-code answer: The right answer is the "how much weight (waht force) is going to be passed through that memeber when a design-sized person gets in that position. So provide a sketch of the problem. Even a 240 lb load can be resisted in tension by a 1/2 x 1/4 bar adequately welded on both ends, even when that 230 lbs is multiplied by a reasonable safety factor, so I do not understand your concern.
RE: Fixed Ladder - Stringer Extension Design (Walk-through)