Roof Access Stairs Ibc

In buildings without an occupied roof access may be by an alternating tread device.

Roof access stairs ibc.

That s a lot of space used for a staircase. 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 original plan was for a ladder. The roof is not occupied only access is for equipment.

The stairway was installed instead of a ladder. In buildings located four or more stories in height one stairway shall extend to the roof. Assuming the minimum width of 36 inches the floor space used by these stairs is 57 75 square feet. Cables in cable railing systems are tensioned to the point where they can actively resist a 4 sphere 4.

That is because each of our stair systems is uniquely designed to meet the customer s requirements as far as layout and aesthetic. 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. In order to access a 12 foot high platform an ibc stair would need 21 steps 7 inch rise 11 inch tread making the entire horizontal run of the stairs 19 25 feet. How does superior comply.

The building is less than 4 stories and the ladder access would be allowed with a pop up hatch. 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. Landings ibc 1011 6 1009 6 3 there must be a floor or landing at the top and bottom of each stairway. Access to setback roof areas may be through a door or window opening to the roof.

What they have installed is a stairway to the pop up. Ibc 1015 5 key exception 1. 2006 ibc 1009 11 stairway to roof.