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CODE SNIPPET

504.4 Number of Stories

Building Code 2015 of Utah > 5 General Building Heights and Areas > 504 Building Height and Number of Stories > 504.4 Number of Stories
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The maximum number of stories of a building shall not exceed the limits specified in Table 504.4.

TABLE 504.4a, b ALLOWABLE NUMBER OF STORIES ABOVE GRADE PLANE

OCCUPANCY CLASSIFICATION TYPE OF CONSTRUCTION
SEE FOOTNOTES TYPE I TYPE II TYPE III TYPE IV TYPE V
A B A B A B HT A B
A-1 NS UL 5 3 2 3 2 3 2 1
S UL 6 4 3 4 3 4 3 2
A-2 NS UL 11 3 2 3 2 3 2 1
S UL 12 4 3 4 3 4 3 2
A-3 NS UL 11 3 2 3 2 3 2 1
S UL 12 4 3 4 3 4 3 2
A-4 NS UL 11 3 2 3 2 3 2 1
S UL 12 4 3 4 3 4 3 2
A-5 NS UL UL UL UL UL UL UL UL UL
S UL UL UL UL UL UL UL UL UL
B NS UL 11 5 3 5 3 5 3 2
S UL 12 6 4 6 4 6 4 3
E NS UL 5 3 2 3 2 3 1 1
S UL 6 4 3 4 3 4 2 2
F-1 NS UL 11 4 2 3 2 4 2 1
S UL 12 5 3 4 3 5 3 2
F-2 NS UL 11 5 3 4 3 5 3 2
S UL 12 6 4 5 4 6 4 3
H-1 NSc, d 1 1 1 1 1 1 1 1 NP
S
H-2 NSc, d UL 3 2 1 2 1 2 1 1
S
H-3 NSc, d UL 6 4 2 4 2 4 2 1
S
H-4 NSc, d UL 7 5 3 5 3 5 3 2
S UL 8 6 4 6 4 6 4 3
H-5 NSc, d 4 4 3 3 3 3 3 3 2
S
I-1 Condition 1 NSd, e UL 9 4 3 4 3 4 3 2
S UL 10 5 4 5 4 5 4 3
I-1 Condition 2 NSd, e UL 9 4 3 4 3 4 3 2
S UL 10 5
I-2 NSd, f UL 4 2 1 1 NP 1 1 NP
S UL 5 3
I-3 NSd, e UL 4 2 1 2 1 2 2 1
S UL 5 3 2 3 2 3 3 2
I-4 NSd, g UL 5 3 2 3 2 3 1 1
S UL 6 4 3 4 3 4 2 2
M NS UL 11 4 2 4 2 4 3 1
S UL 12 5 3 5 3 5 4 2

(continued)

TABLE 504.4a, b‒continued ALLOWABLE NUMBER OF STORIES ABOVE GRADE PLANE

OCCUPANCY CLASSIFICATION TYPE OF CONSTRUCTION
SEE FOOTNOTES TYPE I TYPE II TYPE III TYPE IV TYPE V
A B A B A B HT A B
R-1 NSd, h UL 11 4 4 4 4 4 3 2
S13R 4 4 4 3
S UL 12 5 5 5 5 5 4 3
R-2 NSd, h UL 11 4 4 4 4 4 3 2
S13R 4 4 4 4 3
S UL 12 5 5 5 5 5 4 3
R-3 NSd, h UL 11 4 4 4 4 4 3 3
S13R 4 4 4 4
S UL 12 5 5 5 5 5 4 4
R-4 NSd, h UL 11 4 4 4 4 4 3 2
S13R 4 4 4 3
S UL 12 5 5 5 5 5 4 3
S-1 NS UL 11 4 2 3 2 4 3 1
S UL 12 5 3 4 3 5 4 2
S-2 NS UL 11 5 3 4 3 4 4 2
S UL 12 6 4 5 4 5 5 3
U NS UL 5 4 2 3 2 4 2 1
S UL 6 5 3 4 3 5 3 2

Note: UL = Unlimited; NP = Not Permitted; NS = Buildings not equipped throughout with an automatic sprinkler system; S = Buildings equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1; S13R = Buildings equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.2.
a. See Chapters 4 and 5 for specific exceptions to the allowable height in this chapter.
b. See Section 903.2 for the minimum thresholds for protection by an automatic sprinkler system for specific occupancies.
c. New Group H occupancies are required to be protected by an automatic sprinkler system in accordance with Section 903.2.5.
d. The NS value is only for use in evaluation of existing building height in accordance with the International Existing Building Code.
e. New Group I-1 and I-3 occupancies are required to be protected by an automatic sprinkler system in accordance with Section 903.2.6. For new Group I-1 occupancies, Condition 1, see Exception 1 of Section 903.2.6.
f. New and existing Group I-2 occupancies are required to be protected by an automatic sprinkler system in accordance with Section 903.2.6 and Section 1103.5 of the International Fire Code.
g. For new Group I-4 occupancies, see Exceptions 2 and 3 of Section 903.2.6.
h. New Group R occupancies are required to be protected by an automatic sprinkler system in accordance with Section 903.2.8.

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