13-48-030 Maximum allowable building heights.

   Except as provided in Section 13-48-040, no building shall be hereafter erected to exceed the maximum allowable heights established in Table 13-48-030 of this Code. School height limitations are not applicable to Type III schools in buildings of mixed occupancies in construction Type III or better. Type III schools shall not be permitted in buildings of Type IV- A or Type IV-B construction. Intermediate care facilities for the developmentally disabled – 15 or less shall not be permitted in any building of Type IV-A or Type IV-B construction. (See Table 13-48-030.)

   Notwithstanding the provisions of this section, the height limitation for a building in the Wrigley Field Adjacent Area in which a special club license is located shall be as provided in Chapter 4-388.

Table 13-48-030 Maximum Allowable Heights of Buildings
Occupancy Classification		Construction Type
			I-A	I-B	I-C	II	III-A	III-B	III-C	IV-A	IV-B
A.	Residential	Stories	NL	12	6	1	4(d)	4	2(a)(h)	2(a)(g)(h)	2(a)
		Feet	NL	150	80	20	55(d)	55	40f	40f	30
B.	Institutional	Stories	NL	10	4	1	1	1	NP	NP	NP
		Feet	NL	130	55	20	20	20	–	–	–
C-1.	Large	Stories	NL	8	2	NP	2(b)	2	NP	NP	NP
	Assembly	Feet	NL	105	50	–	50(b)	50	–	–	–
C-2.	Small	Stories	NL	10	4	1	2(b)	2	1	1	1
	Assembly	Feet	NL	130	55	30	50(b)	50	30	30	30
C-3.	Schools	Stories	NL	10	4	1	2	2	1	1	1
		Feet	NL	130	55	20	30	30	20	20	20
D.	Open Air Assembly		Maximum height established in Chapter 55
E.	Business	Stories	NL	12	6(b)	1	5(b)	4	3	1	1
		Feet	NL	150	80(b)	20	65(b)	55	45	20	20
F.	Mercantile	Stories	NL	8	4	1	5(b)	3	2	1	1
		Feet	NL	105	80	20	65(b)	45	30	20	20
G-1.	Industrial	Stories	NL	12	6(b)	2	5(b)	4	3	1	1
	Low	Feet	NL	150	80(b)	40	65(b)	55	45	30	30
G-2.	Industrial	Stories	8(c)	5(b)	4(b)	1	5(b)	4	2(b)	1	1
	Moderate	Feet	105(c)	65(b)	55(b)	40	65(b)	55	30(b)	30	30
	Hazard
H-1.	Storage	Stories	NL	12	6(b)	2	5(b)	4	3	1	1
	Low Hazard	Feet	NL	150	80(b)	40	65(b)	55	45	30	30
H-2.	Storage	Stories	8(c)	5(b)	4(b)	1	5(b)	3(b)	2(b)	1	1
	Moderate	Feet	105(c)	65(b)	55(b)	40	65(b)	45(b)	30(b)	30	30
	Hazard
H-3.	Garages	Stories	4(c)	3	3	1	2	2	1	NP	NP
		Feet	55(c)	40	40	20	30	30	20	–	–
I.	Hazardous Use		Maximum allowable heights established in Chapter 60
J.	Miscellaneous Buildings and Structures		Maximum allowable heights established in Chapter 61
K.	Intermediate care facilities for develop- mentally disabled – 15 or less(e)	Stories	2	2	2	2	2	2	2	NP	NP
		Feet	30	30	30	30	30	30	30	NP	NP
NOTES:
(a)   Attic floor exceeding 30 feet above grade allowed in addition when used for mechanical equipment only, but shall not exceed 20 percent of floor area below.
(b)   One additional story and 15 feet additional height allowed when the building is equipped throughout with approved automatic sprinkler system.
(c)   Height shall not be limited when building is equipped throughout with approved automatic sprinkler system.
(d)   In an existing heavy timber building the height may be increased to 120 feet, 80 feet for new buildings, regardless of the number of stories when the building is brought into full compliance with the following:
(1)   Chapter 13-76;
(2)   Smoke alarms, Sections 13-64-120 through 13-64-180;
(3)   “Controlled Materials”, Section 13-120-040;
(4)   In existing buildings over 80 feet in height, an automatic general alarm shall be installed and be audible throughout the corridors of the building and shall be activated by the sprinkler flow alarm and smoke detectors.
(e)   For purposes of defining a story in this occupancy, any level above or below the first floor used by the residents, for any purpose other than personal laundry, shall be deemed a story.
(f)   The finished floor level of the third floor shall not exceed 25 feet above grade.
(g)   Mechanical equipment areas shall be equipped with smoke detector connected to electrical system, when building exceeds 30 feet in height and mechanical equipment is located in area above 30 feet.
(h)   Other requirements notwithstanding, three floors shall be permitted in one-, two-, and three-family structures when exterior wood frame walls provide one hour protection from fire exposure inside and out, when the third floor area of any separate unit does not exceed 800 square feet and when the ground floor area does not exceed 1,600 square feet.
NP – Not permitted.
NL – Not limited.

 

(Prior code § 51-1.2; Amend Coun. J. 12-21-84, p. 12140; Corrected. 4-20-88, p. 12481; Amend Coun. J. 3-30-88, p. 11381; Amend Coun. J. 11-29-89, p. 8272; Amend Coun. J. 10-2-95, p. 8040; Amend Coun. J. 1-11-06, p. 68371, § 3; Amend Coun. J. 9-6-17, p. 55278, Art. VI, § 7)