Code Analysis

A.	Occupancy Classification
	(CBC Ch. 3 and CBC Table 1004.1.1, Table 1015.1 & Table 1019.1)
	1	Occupancy Type:	R2, M, U
		(CBC Ch. 3; for mixed occupancy, see CBC Sec 302)
	separate or	Accessory Occupancy:	x-x
	accessory?	(CBC Sec 504.3.2)
	2	Building Floor Area:	14,000
		Group R-2:	7000
		Group M:	1000
		Group U:	6000
		(CBC Sec. 506.3)
	3	Occupant Load:	71
		(CBC Table 1004.1.1)
	4	Occupancy Separation:
		(CBC Table 508.3.3)	for buildings equiped throughout w/an automatic sprinkler system
			installed in accordance with section 903.3.1.1
	5	Spaces with One Means of Egress:
		Group R-2:	10 max occupant load	1
		Group M:	49 max occupant load	1
		Group U:	49 max occupant load	1
		(CBC Table 1015.1)
	6	Exit Access Travel Distance:
		Group R-2:	250 FT w/sprinkler system	200
		Group M:	250 FT w/sprinkler system	200
		Group U:	400 FT w/sprinkler system	300
		(CBC Table 1016.1)
	7	Minimum No. of Exits per Occupant Load:
		1-500	2 per story
		501-1,000	3 per story
		(CBC Table 1019.1)
D.	Allowable Floor Area
	(CBC Ch. 5 and Table 5-B)
	Based on Construction Type IIA
	Group R-2:
	1	Basic Allowable Height:	65' / 4 Stories
		(Bldg height / # of stories)
	2	Basic Allowable Flr Area:	24000 SF
		(CBC Table 503)
	3	Yard Separation Increase:	6400 SF
		(CBC Sec 505.1)
	4	Multi-story Increase:	24000 SF
		(CBC Sec 504.2)
	Group M:
	1	Basic Allowable Height:	65' / 4 Stories
		(Bldg height / # of stories)
	2	Basic Allowable Flr Area:	21,500 SF
		(CBC Table 503)
	3	Yard Separation Increase:	3,733 SF
		(CBC Sec 505.1)
	4	Multi-story Increase:	21500 SF
		(CBC Sec 504.2)
	Group U:
	1	Basic Allowable Height:	65' / 5 Stories
		(Bldg height / # of stories)
	2	Basic Allowable Flr Area:	35500 SF
		(CBC Table 503)
	3	Yard Separation Increase:	0
		(CBC Sec 505.1)	0
	4	Multi-story Increase:	0
		(CBC Sec 504.2)
E.	Actual Floor Area:
	Occupancy Type:		R-2
		Floor Level:	ASF
		Basement	0	< 54,400 SF
		First Floor	0	< 54,400 SF
		Second Floor	3,350	< 54,400 SF
		Third Floor	4460	< 54,400 SF
		Fourth Floor	1815	< 54,400 SF
		Total Actual Floor Area	9,625
	Occupancy Type:		M
		Floor Level:	ASF
		Basement	0	< 46,733 SF
		First Floor	0	< 46,733 SF
		Second Floor	1000	< 46,733 SF
		Third Floor	0	< 46,733 SF
		Fourth Floor	0	< 46,733 SF
		Total Actual Floor Area	1000
	Occupancy Type:		U
		Floor Level:	ASF
		Basement	0	< 35,500 SF
		First Floor	6000	< 35,500 SF
		Second Floor	0	< 35,500 SF
		Third Floor	0	< 35,500 SF
		Fourth Floor	0	< 35,500 SF
		Total Actual Floor Area	6000

02.21.11

Chicago site

Chicago, IL
41*53'23.11" N  87*37'43.80" W

Material Study 0216 - 0218

brick model photos

Precedent Study