Horizontal Exit

Section 1025

Horizontal Exits are designed to move building occupants on a floor from any point in the exit access system to a fire and smoke protected area.

Side Acting Accordion with Complying Swing Egress Door

In this particular case study the intent is to add a 9,700 square foot critical care suite on an existing I-2 (hospital). However other code requirements come into play affecting the design dramatically:

• First, suites of sleeping rooms cannot exceed 5000 square feet and in this case a 9,700 square foot suite is being added. (407.4.3.5.1)

• Second, there must be two exits from each suite. (407.4.3.5.2)

• Third, the travel distance between any point in a suite of sleeping rooms and an exit access exit door shall not exceed 100 feet. (407.4.3.5.3)

By utilizing the horizontal exit concept, the following will preserve the original design intent and provide code compliance:

• Separate the intended 9,700 square foot space into two suites, each less than 5,000 square feet.

• Provide a 2-hour fire barrier wall as the separation. (Section 1025.2)

• Provide a horizontal exit in the separation as one of two required exits from each space.  (Section 407.4.3.5.2)

• Provide a 90-minute opening protective. (Table 716.5)