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The Building Code Blog
IBC Allowable Area  Separated Mixed Occupancy
Description
Reference
Value
Unit
Code Edition
IBC
2015
2018
2021

Building Information
Construction Type
(IBC 601)
[Dynamic Dropdown]

Sprinklers
(IBC 903.3)
NFPA 13
NFPA 13R
None

Proposed Number of Stories
(IBC 202)
Stories
Frontage Increase Factor (I
_{f}
)
(IBC 506.3.3)

Height and Area Limits
Occupancy 1
Occupancy 2
Occupancy 3
Occupancy 4
Occupancy 5
Occupancy 6
Occupancy
(IBC Chapter 3)
A1
A2
A3
A4
A5
B
E
F1
F2
H1
H2
H3
H4
H5
I1 Condition 1
I1 Condition 2
I2 Condition 1
I2 Condition 2
I3
I4
M
R1
R2
R3
R4
S1
S2
U

A1
A2
A3
A4
A5
B
E
F1
F2
H1
H2
H3
H4
H5
I1 Condition 1
I1 Condition 2
I2 Condition 1
I2 Condition 2
I3
I4
M
R1
R2
R3
R4
S1
S2
U

A1
A2
A3
A4
A5
B
E
F1
F2
H1
H2
H3
H4
H5
I1 Condition 1
I1 Condition 2
I2 Condition 1
I2 Condition 2
I3
I4
M
R1
R2
R3
R4
S1
S2
U

A1
A2
A3
A4
A5
B
E
F1
F2
H1
H2
H3
H4
H5
I1 Condition 1
I1 Condition 2
I2 Condition 1
I2 Condition 2
I3
I4
M
R1
R2
R3
R4
S1
S2
U

A1
A2
A3
A4
A5
B
E
F1
F2
H1
H2
H3
H4
H5
I1 Condition 1
I1 Condition 2
I2 Condition 1
I2 Condition 2
I3
I4
M
R1
R2
R3
R4
S1
S2
U

A1
A2
A3
A4
A5
B
E
F1
F2
H1
H2
H3
H4
H5
I1 Condition 1
I1 Condition 2
I2 Condition 1
I2 Condition 2
I3
I4
M
R1
R2
R3
R4
S1
S2
U

Max Height
(IBC Table 504.3)
Feet
Max Number of Stories
(IBC Table 504.4)
Stories
Max Area Per Floor
(IBC Equation 52 and 53)
SF
Proposed Areas
Total Floor Area
Ratio
Level 1
SF
Level 2
SF
Level 3
SF
Level 4
SF
Level 5
SF
Level 6
SF
Level 7
SF
Level 8
SF
Level 9
SF
Level 10
SF
Level 11
SF
Level 12
SF
Total
SF
Required Separations
Occupancy
N = No Separation Required
NP = Not Permitted
Notes
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