Roof Access Stairs Ibc

In buildings four or more stories or more than 40 feet 12 192 mm in height above grade one stairway shall extend to the roof surface through a stairway bulkhead complying with section 1509 2 unless the roof has a slope steeper than 20 degrees 0 35 rad.

Roof access stairs ibc.

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. 2006 ibc 1009 11 stairway to roof. 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. Access to setback roof areas may be through a door or window opening to the roof.

Landings ibc 1011 6 1009 6 3 there must be a floor or landing at the top and bottom of each stairway. The original plan was for a ladder. In buildings without an occupied roof access may be by an alternating tread device. How does superior comply.

Solid risers are required for ibc stairs except for means of egress stairways as long as the opening between treads does not allow a 1 2 inch diameter sphere to pass through. The triangular openings at the open sides of a stair formed by the riser tread and bottom rail shall not allow passage of a sphere 6 in diameter a. The stairway was installed instead of a ladder. Ibc 1015 5 key exception 1.

Cables in cable railing systems are tensioned to the point where they can actively resist a 4 sphere 4. Assuming the minimum width of 36 inches the floor space used by these stairs is 57 75 square feet. That is because each of our stair systems is uniquely designed to meet the customer s requirements as far as layout and aesthetic. The building is less than 4 stories and the ladder access would be allowed with a pop up hatch.

The roof is not occupied only access is for equipment. In buildings located four or more stories in height one stairway shall extend to the roof. What they have installed is a stairway to the pop up.