Wells must completely encircle the ladder.
Roof access ladder requirements.
Smooth walled wells shall be a minimum of 27 inches and a maximum of 30 inches from the center line of rungs to the well wall on the climbing side of the ladder.
Roof access systems may involve walkthrough rails over parapet platforms and safety gates.
For parapet ladders the access level is.
Inside widths of wells must be at least 30 inches 76 cm.
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.
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.
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.
Cages must extend 42 inches above the top of the landing.
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.
When a roof access hatch or scuttle is located within 10 feet 3 0 m of a roof edge a guard shall be installed in accordance with imc section 304 11.
All landing platforms shall be equipped with standard railings and toeboards so arranged as to give safe access to the ladder.
The requirement for a cage comes when you have a fixed ladder longer than 20 feet.
Fixed ladders without cages must now have a landing platform at maximum intervals of 150 feet.
1910 23 d 4 i the roof if the parapet is cut to permit passage through the parapet.
When regular maintenance is needed for accessing roofs walkways mezzanines and equipment osha compliant systems are required.
Where other obstructions on the climbing side of the ladder exist there shall be a minimum of 30 inches from the center line of the rungs.
Inside faces of wells on the climbing side of the ladder must extend between 27 inches 68 cm and 30 inches 76 cm.
Wells must be free of projections.
Here are the basics of the requirements.
Exterior stairs shall terminate at the roof access point or at a level landing of at least 8 square feet 0 74 m 2 with a minimum dimension of 20 inches 508 mm.
Previously a fixed ladder with a cage required a landing platform at a maximum interval of 30 feet.
Platforms shall be not less than 24 inches in width and 30 inches in length.
Bottoms of wells above the point of access.
Engineered fall protection can design and install customized ladders to suit most any application.
