Ibc Stairway Roof Hatch

In buildings in occupancy groups r 1 and r 2 two stories in height and in occupancy group r 2 three stories in height with not more than one dwelling unit per story access to the roof shall be permitted to be a noncombustible roof hatch or trap door not less than 21 inches 533 mm in width and 28 inches 711 mm in length.

Ibc stairway roof hatch.

The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. 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. Ibc specifically exempts skylights and roof hatches as long as they are not part of the structure of the roof.

Chapter 8 fire protection. The only apparent purpose of the stair is not to provide a means of egress to the roof level but to provide access to the roof for the maintenance of equipment. If the stairs are outside the design of the ibc stairs cannot allow water to accumulate on the walking surface. He will not allow reference to ibc codes as he only enforces nfpa and is holding fast on his interpretation that this is a door even though is swings vertically and in not in a path of egress.

A variety of special sizes are also available to provide an accessible way to install or remove large pieces of equipment from a building. Fasteners for asphalt shingles shall be galvanized stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 2 67 mm shank with a minimum 3 8 inch diameter 9 5 mm head of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 1 mm into the roof sheathing. I argued as well. Often the same roof access is accomplished from the highest stairway landing by means of a ladder and scuttle hatch.

Where the roof sheathing is less than 3 4 inch 19 1 mm thick the nails. Guards ibc 1011 13 1015 guards are required along all open sided walking surfaces of the stairway including landings and stairs.