13-76-100 Construction.

   (a)   Buildings complying with this chapter may deviate from otherwise applicable provisions of this Code as follows:

      (1)   The floor construction fire rating may be reduced for Types I-A and I-B construction from the present requirement of Table 13-60-100 as follows:

         (A)   For buildings not greater than 420 feet, to one hour.

         (B)   For buildings greater than 420 feet, to two hours

      (2)   The public corridor partition fire rating may be reduced to noncombustible from the present requirements of Section 15-8-240(a)(1);

      (3)   The area separations may be eliminated from the present requirements of Section 15-8-240(a)(2);

      (4)   The elevator shaft enclosure may be eliminated when the elevators are incorporated in atriums;

      (5)   The fire rating of exterior nonbearing walls of buildings of Types I-A, I-B and I-C may be reduced to noncombustible from the present requirements of Table 13-60-100; and

      (6)   Smokeproof towers as presently required in Section 13-160-360 may be eliminated.

(Prior code § 62.1-10; Amend Coun. J. 4-25-84, p. 6189; Amend Coun. J. 1-18-89, p. 23794; Amend Coun. J. 6-14-95, p. 2841; Amend Coun. J. 10-30-96, p. 31216; Amend Coun. J. 5-18-16, p. 24131, § 36; Amend Coun. J. 11-9-16, p. 36266, § 16; Amend Coun. J. 9-6-17, p. 55278, Art. VII, § 8)

13-76-101 Sprayed fire-resistant materials.

   The bond strength of sprayed fire-resistant materials (SFRM) installed throughout the building shall be in accordance with Table 13-76-101.

Table 13-76-101
Minimum Bond Strength

 

Height of Building(a)	SFRM Minimum Bond Strength
80 to 420 feet	430 psf
Greater than 420 feet	1,000 psf

 

(a) Determined in accordance with Section 13-48-020.

(Added Coun. J. 9-6-17, p. 55278, Art. VII, § 9)

13-76-105 Atriums.

   (a)   “Atrium” means an opening connecting two or more stories, other than enclosed stairways, elevators, hoistways, escalators, plumbing, electrical, air- conditioning, or other equipment shafts which are closed at the top. Stories do not include balconies within assembly occupancies or mezzanines complying with Section 13-48-020(d)(2).

   (b)   Any new building containing an atrium shall comply with all the requirements of this chapter.

   (c)   Atriums are permitted in buildings of Type I construction.

   (d)   Atriums shall be provided with a smoke control system meeting the following requirements:

      (1)   If the volume of the atrium does not exceed 600,000 cubic feet, the exhaust system shall provide not less than 6 air changes per hour.

      (2)   If the volume of the atrium exceeds 600,000 cubic feet, the exhaust system shall provide not less than 4 air changes per hour.

      (3)   Supply openings shall be sized for at least one-half the exhaust capacity.

      (4)   Exhaust shall be at the top of the atrium and intake at the bottom.

      (5)   Smoke detectors shall be provided at the ceiling of the atrium and at the perimeter of the atrium on each floor within 15 feet.

      (6)   The smoke control system shall have completely automatic control. The automatic-control sequences shall be initiated from the activation of a sprinkler system, smoke detectors in the atrium area, or manual control at the fire command panel.

   (e)   Plans shall indicate the total area and total volume open to the atrium, and shall specify the dimensions, capacity, and direction of flow for all supply and exhaust openings.

(Added Coun. J. 9-6-17, p. 55278, Art. VII, § 10)

13-76-110 Plans submitted for approval to include drawings.

   All plans submitted for approval for a permit as required by Chapter 13-40 of the Municipal Code of Chicago shall include specific drawings showing compliance with this chapter.

(Prior code § 62.1-11)

13-76-120 Fire protection system – Annual test required.

   The entire fire protection system as required by this chapter shall be tested on an annual basis by an individual or organization approved by the fire commissioner. Reports of these tests shall be submitted and approved by the fire commissioner.

(Prior code § 62.1-12; Amend Coun. J. 5-18-16, p. 24131, § 37; Amend Coun. J. 9-6-17, p. 55278, Art. VII, § 11)

13-76-130 Fire department emergency access elevator.

   At least one elevator is to be provided for fire department emergency access to all floors of a building. All elevators shall be equipped with firefighters' emergency operation control in accordance with Section 14C-4-3.11.3.

(Prior code § 62.1-13; Amend Coun. J. 10-17-09, p. 72419, § 13; Amend Coun. J. 3-28-18, p. 74459, Art. II, § 10)

13-76-140 Reserved.

Editor's note – Coun. J. 9-6-17, p. 55278, Art. VII, § 12, repealed § 13-76-140, which pertained to product standards.