Cages must extend 42 inches above the top of the landing.
Roof access ladder regulations.
Individual rung ladders installed in the walls of conical top sections of manholes and underground vaults shall be allowed to exceed a pitch of 90 degrees for a distance of not more than 2 rungs or steps in the conical top sections.
Here are the basics of the requirements.
24 inches this extension above the access level must be at least 24 inches wide to accommodate the width of climber s body and not more than 30 inches of clearance allowing the climber to easily reach both hand rails.
All landing platforms shall be equipped with standard railings and toeboards so arranged as to give safe access to the ladder.
The side rails of through or sidestep ladders extend at least 42 inches 1 1 m above the top of the access level or landing platform served by the ladder.
The regulations say that if a fixed ladder is taller than 20 feet you are required to have a cage which meets all the requirements of 29 cfr 1910 27 d.
Previously a fixed ladder with a cage required a landing platform at a maximum interval of 30 feet.
These hatches are generally larger in order to accommodate the installation or removal of equipment or machinery into a building.
This is the same height that osha requires for guardrails.
The deviation from 90 degrees shall not exceed 6 inches.
For parapet ladders the access level is.
The new regulations change this requirement dramatically.
1910 23 d 4 i the roof if the parapet is cut to permit passage through the parapet.
Fixed ladders without cages must now have a landing platform at maximum intervals of 150 feet.
Platforms shall be not less than 24 inches in width and 30 inches in length.
These hatches are typically located over a ladder or staircase that provides access to the roof.
1910 27 d 2 iii one rung of any section of ladder shall be located at the level of the landing laterally served by the ladder.
Per osha 1910 23 d 4 the side rails of through or sidestep ladders must extend 42 inches above the top of the access level or landing platform served by the ladder.