// CODE SNIPPET
506.3.3 Amount of Increase
JUMP TO FULL CODE CHAPTER
(Equation 5-5)
The area factor increase based on frontage shall be determined in accordance with Equation 5-5:

where:
If = Area factor increase due to frontage.
F = Building perimeter that fronts on a public way or open space having minimum distance of 20 feet (6096 mm).
P = Perimeter of entire building (feet).
W = Width of public way or open space (feet) in accordance with Section 506.3.2.
Related Code Sections
506.3.3 General Building Heights and Areas, Amount of Increase
The area factor increase based on frontage shall be determined in accordance with Equation 5-5: (Equation 5-5) where: I f = Area factor ...
Building Code 2018 of Illinois > 5 General Building Heights and Areas > 506 Building Area > 506.3 Frontage Increase > 506.3.3 Amount of Increase
506.3.3 General Building Heights and Areas, Amount of Increase
The area factor increase based on frontage shall be determined in accordance with Table 506.3.3.
TABLE 506.3.3
FRONTAGE INCREASE FACTOR ...
Building Code 2021 of Illinois > 5 General Building Heights and Areas > 506 Building Area > 506.3 Frontage Increase > 506.3.3 Amount of Increase
9.6.4 Lighting, Room Geometry Adjustment
be increased by the following amount: LPD Increase = Base Space LPD × 0.20 where Base Space LPD = the applicable LPD allowance from Table ...
Energy Standard for Buildings Except Low-Rise Residential Buildings 2016 of Illinois > 9 Lighting > 9.6 Alternative Compliance Path: Space-By-Space Method > 9.6.4 Room Geometry Adjustment
1017.2.1 Means of Egress, Exterior Egress Balcony Increase
shall be not less than the amount of the increase taken ...
Building Code 2021 of Illinois > 10 Means of Egress > 1017 Exit Access Travel Distance > 1017.2 Limitations > 1017.2.1 Exterior Egress Balcony Increase
1017.2.1 Means of Egress, Exterior Egress Balcony Increase
shall be not less than the amount of the increase taken ...
Building Code 2018 of Illinois > 10 Means of Egress > 1017 Exit Access Travel Distance > 1017.2 Limitations > 1017.2.1 Exterior Egress Balcony Increase