FIRE RESITANCE REQUIREMENTS

Identification of any horizontal exits that are used in the building

Horizontal exits are an egress design option recognized in accordance with 2015 International Building Code (IBC), Section 1026 and/or 2015 NFPA 101, Life Safety Code, Section 7.2.4.

The concept of a horizontal exit is to create a safe refuge area separated from the fire area by a two-hour fire-resistance-rated separation. Horizontal exits are used to provide an exit from one area of the building to another area without the use of exit enclosures.

This building design currently does not utilize horizontal exits.

Identification required fire resistance ratings for corridors and stairways in the building

The Fire Resistance Ratings for the corridors and stairways are defined in both the 2015 Life Safety Code and the 2015 International Building Code.

According to the 2015 LSC Table 8.3.4.2 and 2015 IBC Section 1023, interior exit stairway enclosures shall have a Fire Resistance Rating of no less than 2 hours when connecting four stories or more.

According to the 2015 LSC Table 8.3.4.2 and 2015 IBC Section 1024, exit passages or corridors shall have walls, floors, and ceilings with a Fire Resistance Rating of no less than 1 hour.

Exit enclosures must terminate at an exit discharge, exit passageway or a public way. Where an exit passageway is used to extend the exit enclosure, the enclosure shall be separated from the passageway by a fire barrier or horizontal assembly with a Fire Resistance Rating equal to that required for the exit enclosure. A fire door assembly shall be installed in the fire barrier to provide a means of egress from the exit enclosure to the exit passageway. The “Exit Discharge” section of this report provides more detail about exit enclosure termination.

Identification where you would recommend placing exit signs on each floor Marking of means of egress requirements are defined in 2015 LSC Section 7.10 and IBC section 1011. Means of egress shall be marked in accordance with Section 7.10 and IBC section 1011.

Exits, other than main exterior exit doors that obviously and clearly are

identifiable as exits, shall be marked by an approved sign that is readily visible from any direction of exit access. Horizontal components of the egress path within an exit

enclosure shall be marked by approved exit or directional exit signs where the continuation of the egress path is not obvious.

Access to exits shall be marked by approved, readily visible signs in all cases where the exit or way to reach the exit is not readily apparent to the occupants.

The path of egress travel to exits and within exits shall be marked by readily visible exit signs to clearly indicate the direction of egress travel in cases where the path of travel is not immediately visible to the occupants. Intervening means of egress doors within exits shall also be marked with exit signs. New sign placement shall be such that no point in an exit access corridor is in excess of the rated viewing distance or 100 ft (30 m), whichever is less, from the nearest sign.

According to LSC, Section 7.10.1.8, every sign required in Section 7.10 shall be located and of such size, distinctive color, and design that it is readily visible and shall provide contrast with decorations, interior finish, or other signs. No decorations,

furnishings, or equipment that impairs visibility of a sign shall be permitted. No brightly illuminated sign (for other than exit purposes), display, or object in or near the line of vision of the required exit sign that could detract attention from the exit sign shall be permitted.

According to LSC, Section 7.10.1.9, the bottom of new egress markings shall be located at a vertical distance of not more than 6 ft 8 in. (2030 mm) above the top edge of the egress opening intended for designation by that marking. Egress markings shall be located at a horizontal distance of not more than the required width of the egress opening, as measured from the edge of the egress opening intended for designation by that

marking to the nearest edge of the marking. Illuminated exit signs must illuminated at all times and provided with an emergency power source with a duration of at least 90

minutes from storage batteries or a generator.

According to LSC, Section 7.10.1.3, tactile signage shall be provided to meet all of the following criteria, unless otherwise provided in 7.10.1.4:

(1) Tactile signage shall be located at each exit door requiring an exit sign. (2) Tactile signage shall read as follows: EXIT.

(3) Tactile signage shall comply with ICC/ANSI A117.1, American National Standard for Accessible and Usable Buildings and Facilities.

37 Exit signs applicable to the Project building are outlined on the attached floor plans sheets. These exit signs are only shown on the exterior egress doors, and are not shown on any interior circulation portions of the building.

Identification the interior finish requirements for (1) exits; (2) corridors; and (3) other spaces

Interior finishes need to comply with Chapter 8 of the IBC. IBC Table 803.5 gives interior wall and ceiling flame spread finish requirements by occupancy type for the room or area. As a general rule, the installation of a fire sprinkler system usually allows for a one “class” reduction for the IBC Table 803.5 requirements. According to the 2015 IBC Section 3, the first floor will be characterized as Assembly Group 3 as per Section 303.4. Also, as per the 2015 IBC Section 3, the second through fourth floors will be

characterized as Business Group B as per Section 304.1.

Interior finishes are classified according to the ASTM E 84 standard according to three classes for ASTM E 84 flame spread and smoke developed indices:

• Class A: flame spread 0-25, smoke developed 0-450. • Class B: flame spread 26-75, smoke developed 0-450. • Class C: flame spread 76-200, smoke developed 0-450.

Table 7: Interior Finish by Occupancy according to 2015 IBC Table 803.11

According to Table 803.11, interior wall and ceiling finish by occupancy, the following interior finishes shall apply:

This project facility is fully sprinklered. There are two different occupancies in this facility. The Group A-3 occupancy space shall have a Class B interior finish for the interior exit stairways and passageways and corridors and encloses for exit access stairways and ramps. The Group A-3 occupancy space shall have a Class C interior finish for the rooms and enclosed spaces. The Group B occupancy space shall have a Class B interior finish for the interior exit stairways and passageways. The Group B occupancy space shall have a Class C interior finish for the rooms and enclosed spaces and corridors and encloses for exit access stairways and ramps.

OCCUPANT TYPE AND PRE-MOVEMENT ACTIVITIES