Minimum Roof Hatch Dimensions

A common size of roof hatch is 36 x 30 for ladder access to the roof however that size.

Minimum roof hatch dimensions.

In buildings without an occupied roof access to the roof shall be permitted to be a roof hatch or trap door not less than 16 square feet 1 5m2 in area and having a minimum dimension of 2 feet 610 mm. As seen in the picture below featuring new ladder system we recommend a wider climbing surface to accommodate a ladder lifeline system and to make the ladder easier to climb. This size allows for safe access. To provide adequate clearance for emergency personnel and protect workers from injury while using the hatch osha specifies a minimum clearance of 30 between the centerline of the ladder rungs to the back edge hinged side of the hatch opening.

A variety of special sizes are also available to provide an accessible way to install or remove large pieces of equipment from a building. Grab bars not required at hatch exits. Recommended minimum sizes for various types of roof access are shown above. 1910 23 osha requires fall protection for elevator work when a fall hazard is present.

1910 23 open roof hatches should be protected. Per osha 1910 23 b 4 ladder rungs steps and cleats have a minimum clear width of 16 inches measured before installation of ladder safety systems for fixed ladders. All open roof hatches regardless of size or number of covers can present fall hazards. 1910 23 osha s requirements for locking type snaphooks on pole strap systems 03 13 1996.

Osha standard for. Or larger are available. 1009 16 2 protection at roof hatch openings. As the angle of ascent decreases the hatch must be larger to prevent head bumping accidents.

Minimum clear width inside dimension of all types of roof access hatch is 700 mm x 600 mm. If movement of bulky materials through the hatch is anticipated double leaf hatches with openings up to 66 sq. Bilco roof hatches provide safe and convenient access to roof areas by means of an interior ladder ship stair or service stair.