Code requirements

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Code requirements
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Department of Architecure, University of Florida
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Department of Architecure, University of Florida
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Gainesville, Fla.

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CODF REQUIREMENTS
Table of Contents


Summary Chart of Standard Building
Code (SBC) and Life Safety Code
(LSC)

Recommended Procedures to Follow in
the use of the SBC

SBC 101.4 Existing Buildings
101.5 Special Historical Build-
ings and Districts
101.6 Maintenance


SBC 402.2


SBC 605
606
607
608.5
609

SBC Table


SBC Table
LSC Table


Height Modifications


SBC 402.3 Area Modifications

SBC 403 Mixed Occupancy Sepa-
ration Requirements
402.4 General Protective Ref's.
404.4 Special Prot. Ref's: A


SBC 405.3
406.3
407.3
411.3

SBC Table


SBC 602
603
604


II II
I "
"f "


Type IV Construction
II V I
It VI I 11
SUnusable Space
Mixed Types of Construction

S600: Fire Protective
Requirements

S600 Notes
S5-3 Occupant Load for
Determining Exit Req's.


SBC Table 700: Minimum Fire Resistance 12
of Walls, Partitions, and
Opening Protectives
702.3 Wall and Partition Requirements
by Occupancy


SBC Table


II B
I" E


1203.1: Floor Loads--
Minimum Uniformly Distributed
Live Loads


S ," H
II II II II R
It if #I R

400: Allowable Heights
and Floor Areas


Type
I!
11
"


I Construction
II "
III "






CODE REQUi-JEMELTS SBC=Standard Building Code LSC=Life Safety Code

ASSEMBLY 'A-;2)(.SIBC) HAZARDS g) ((BC)
ASSEMBLY (A-2)(SBC) BUSINESS (B) EDUCATIONAL (E) HAZARDOUS (H) (SBC) RESIDENTIAL (R)
Class (C)(LSC) INDUSTRIAL (1)(LSC)


Building Classifi-
cation by Occupancy
(Possible other
classifications in
parentheses)


SBC '82 Section/
Special Protective
References

LSC '82 Chapter
"Existing _



LSC Hazard of Con-
tents Classificatio

Minimum Require-
ments SBC/LSC
(SBC Table 403)

Minimum # of exits
per story SBC/LSC
(SBC 1103.2)

Capacity of .means
of egress (1 person
per 22" exit width)
SBC 1105.4/LSC:
Level Travel
Stairs

Max. Travel Dis-
tance to an Exit
in Feet (SBC Table
1103/LSC)
Sprinklered; Unspr.

Dead-End Limit
(sbc 1104.2/ Isc 5-4


Auditoria
Faculty Club (R)
Classrooms (with
occupancies more
than 100) (E)
Museums

404/404.4



9




Ordinary


2-hour/see Sect.9-3



2 (3 if over 500/
*story)/2 (see 9-2.4)







100/100
75/75





100/100; 75/75

20/20


Faculty Offices/
Administration





405/405.3



27




Ordinary


1-hour/see 27-3



2/2 (see 27-2.4)








100/100
60/60





100/100; 60/60

50/50


Classrooms (A)
Library Annex/
Archives




406/406.3



11




Ordinary


2-hour/see 11-3



2/2 (see 11-2.4)








100/100
75/60





100/100; 75/60

20/20


Chemistry Laos


407/407.3



28




High


4-nour/see 28-3



2/2 (see 28-2.4)








50/50
30/30





50/50; 30/30

20/20,High Haz. 0


Faculty Cluo (A)






411/411.3



20--Lodging House
(less than 15)
17--Hotel
(15 and over)

Ordinary


1-nour/see 20-3,17-.



2/2 (see. 20-21.2,
17-2.4)







100/100
75/75





100/100; 75/75

20/35 A








RECOMMENDED PROCEDURES TO FOLLOW
IN THE USE OF THE STANDARD BUILDING
CODE

I. Determine Occupancy Classification of the structure
(a) Select occupancy classification which most accurately fits the
use of the building. (Chapter IV)
2. Review the Fire District provisions, if any. (Chapter III)
3. Determine minimum Type of Construction necessary to accom-
modate proposed structure. (Chapter VI)
(a) Determine maximum allowable heights and floor areas for
Types of Construction and Occupancy classification. (Table 400-Ch-
apter IV)
(b) Check allowable area increases permitted. (Chapter IV)
4. Check detailed Occupancy requirements. (Note that each code sec-
tion dealing with Occupancy Classification Chapter IV pro-
vides a complete check list that may be utilized for the particular
occupancy.)
5. Check detailed Construction requirements.
(a) Fire Protection of Structural Members (Chapter VI and Table
600)
(b) Fire Protection Requirements (Chapter VII and Table 700)
(c) Means of Egress Requirements (Chapter XI)
6. Review design as related to standards. (Chapters Xll-XX)
7. Check other requirements as necessary.
(a) Use of public property Chapter XXII
(b) Elevators -- Chapter XXIV
(c) Sprinklers and Standpipes -- Chapter IX
(d) Use of Combustible Materials Interior -- 704
(e) Roof coverings 301, 706
(f) .ight, ventilation and sanitation 2001, 2002
(g) Other
These steps are naturally varied in sequence by individual prefer-
ences, however, the first three are Standard Steps which should be
determined in proper order to assist in design or review of buildings.


101.4 -- EXISTING BUILDINGS
(a) Alterations, repairs or rehabilitation work may be made to any exist-
ing building without requiring the building to comply with all the require-
ments of this code provided that the alteration, repair or rehabilitation
work conforms to the requirements of this code for new construction. The
building official shall determine, subject to appeal to the Board of Adjust-
ments and Appeals the extent, if any, to which the existing building shall
be made to conform to the requirements of this code for new construction.
(b) Alterations, repairs or rehabilitation work shall not cause an existing
building to become unsafe as defined in Section 103.4.
(c) If the occupancy classification of an existing building is changed, the
building shall be made to conform to the intent of this code for the new
occupancy classification as established by the building official.
(d) Repairs and alterations, not covered by the preceding paragraphs of
this section, restoring a building to its condition previous to damage or
deterioration, or altering it in conformity with the provisions of this code
or in such manner as will not extend or increase an existing non-
conformity or hazard, may be made with the same kind of materials as
those of which the building is constructed; but not more than twenty-five
(25) percent of the roof covering of a building shall be replaced in any
period of twelve (12) months unless the entire roof covering is made to
conform with ihe requirements of this code for new Lu.ldings.

101.5-SPECIAL HISTORIC BUILDINGS AND DISTRICTS
The provisions of this code relating to the construction alteration,
repair, enlargement, restoration, relocation or moving buildings or struc-
tures shall not be mandatory for existing buildings or structures identified
and classified by the state or local jurisdiction as Historic Buildings when
such buildings or structures are judged by the building official to be safe
and in the public interest of health, safety and welfare regarding any pro-
posed construction, alteration, repair, enlargement, restoration, relocation
or moving of buildings within fire districts. The applicant must submit
complete architectural and engineering plans and specifications bearing the
seal of a registered professional engineer or architect.

101.6-MAINTENANCE
All buildings or structures, both existing and new, and all parts thereof,
shall be maintained in a safe and sanitary condition. All devices or safe-
guards which are required by this code in a building when erected, altered,
or repaired, shall be maintained in good working order. The owner, or his
designated agent, shall be responsible for the maintenance of buildings and
structures.









402.2-HEIGHT MODIFICATIONS
(a) Roof Structures-Church spires, chimneys, tanks and supports,
aerial supports, parapet walls not over four (4) feet high, bulkheads and
penthouses used solely to enclose stairways, tanks, elevator machinery or
shafts, or ventilation or air-conditioning apparatus, need not be considered
in determining the highest point of the building; provided that the highest
point shall be taken to be the highest point of the roof of the highest
penthouse when the aggregate area of all penthouses and other roof struc-
tures exceeds one-third (1/3) of the area of the roof upon which they
stand. (See Section 712, 713, 714, 715 and 716).
(b) Grade Entrance Parking-Where a one-story automobile parking
structure, enclosed or open, of Type I or II Construction, with grade
entrance, is provided under a building of Group R-Residential Occu-
pancy, the number of stories to be used in determining the minimum type
of construction may be measured from the floor above such parking area.
The floor assembly shall provide the occupancy separation required in Sec-
tion 403. l(d).
(c) Mezzanines-A mezzanine need not be counted as a story when it
meets the following requirements.
1. The construction of a mezzanine shall be consistent with the type
of materials and fire resistance ratings required fol the building in which
they are constructed.
2. The total area of mezzanines within a room shall not exceed one
third (1/3) that of the room or space in which they are located, and any
enclosed space under a mezzanine shall not be included in a determination
of the size of the room or space in which the mezzanine(s) are located.
3. All portions of a mezzanine shall be open to the room in which it is
located, except that areas not exceeding ten (10) percent of the mezzanine
and accommodating not more than ten (10) persons, and located away
from the side which opens to the room, may be enclosed by partitioning.
Except in certain Factory-Industrial and Mercantile Occupancies the side
of the mezzanine which is open to the room shall be unobstructed except
for columns, posts and protective walls or guardrails not over forty-two
(42) inches in height. Mezzanines may be glazed on all sides in Factory-
Industrial Occupancies where such mezzanines are used for control equip-
ment, and in Mercantile Occupancies where such mezzanines are used as
observation platforms. One-way vision type glazing is permissable.
4. Two means of egress shall be provided from any mezzanine having
an occupant load or floor area in excess of the following:


Occupancy No. of Persons Area of Mezz. in Sq. Ft.


Assembly 50 750
Business 40 3500
Educational 0 2500
Factoiy-Industrial 25 2500
Hazardous 0 Not Permitted
Institutional-Restrained 0 2500
Institutional-Unrestrained 0 Not Permitted
Mercantile 37 2250
Residential 17 3500
Storage 25 2500


5. Egress stairways from mezzanines shall conform with the require-
ments of Section 1113. They may be open and may descend to the floor of
the room in which they are located when all the following conditions are
met:
a. The space beneath the mezzanines is totally open and unemcumbered
by partioned rooms or spaces.
b. The travel distance from the most remote point on the floor of the
mezzanine to the building exit or to a protected egress corridor, exit court,
horizontal passageway, enclosed stairway, or exterior exitway balcony,
inclusive of travel on the stairway, does not exceed seventy-five (75) feet
where a single means of egress is permitted, or the limits of Table 1103
where multiple means of egress are required.
c. The occupant load of the mezzanine is added to the occupant load of
the story or room in which it is located for purposes of determining the
egress requirements of such story or room.
d. The mezzanine is not occupied for sleeping purposes, unless there are
exterior windows accessible to the mezzanine and located not more than
two stories above grade.
(d) Basements -The basement of a building shall not count as a story if
the upper surface of the first floor above such basement is less than seven
(7) feet above average grade.

(e) Group E Educational and Group A Assembly Basement Rooms-
Basements used as classrooms or assembly rooms shall be counted as a story.

(f) The height of Group B Business, Group M Mercantile and Group
R Residential occupancies of Type II Construction shall not be limited
provided the fire-resistance of all columns shall be not less than three (3)
hours and the other structural members including floors shall be not less
than that shown in Chapter VI, but in no case less than two (2) hours
except that roofs and their supporting beams, girders, trusses and arches
shall be not less than one and one-half (11/b) hours fire-resistive con-
struction.








402.3-AREA MODIFICATIONS

(a) Application-The exceptions and requirements of this Section shall
modify unsprinklered areas permitted by Table 400 and the specific use
provisions of this Chapter.
(b) Area Increase for Separation-Where streets or public places, or
horizontal separation from property lines of total width of not less than
thirty (30) feet (or 30 feet between buildings on commonly owned prop-
erty) extend along the building perimeter, except for hazardous occupan-
cies, the areas permitted by Table 400 may be increased as follows:
For an unsprinklered building the percent increase is applied to the
unsprinklered area permitted in Table 400 for the type of construction. For
a sprinklered building, the percent increase is applied to the unsprinklered
area permitted in Table 400 for the Type of Construction of the building.
When there are no unsprinklered areas permitted for the building in Table
400 an unsprinklered area can be computed for use in this section. The
corresponding unsprinklered areas are computed as one-third (1/3) of the
sprinklered area for one (1) story only and as one-half (1/2) of the sprink-
Icred area for multi-stories.
Where I= 4/3[100%(F/P-0.25)]
I = Percent increase of unsprinklered areas
F = Building perimeter in feet which fronts on streets, public places
or horizontal separation not less than thirty (30) feet wide
P = Total perimeter of building in feet

(c) Unlimited Areas
1. The area of a one-story building of Group B Business, Group F-
Factory-Industrial, Group M Mercantile, or Group S Storage occu-
pancy, shall not be limited provided the building is equipped with an
approved automatic sprinkler system throughout, in accordance with Sec-
tion 901 or other automatic extinguishing systems as approved by the
Building Official, and is surrounded on all sides by a permanent open
space of not less than sixty (60) feet.
EXCEPTIONS:
1. Where water may cause or increase a fire, other fire extin-
guishing systems shall be required in rooms or buildings used for
the manufacture or storage of hazardous materials including but
not limited to, aluminum powder, calcium carbide, calcium phos-
phate, metallic sodium and potassium, quicklime, magnesium
powder and sodium peroxide.
2. In Group S Storage and Group F Factory-Industrial
occupancies where non-combustible products are manufactured or
stored, such as metal processing and manufacturing plants, and
metal products are not stored in combustible wrappings, contain-
ers or palletized, the sprinkler system may be omitted upon appro-
val of the Building Official.
Note: See Section 407.1(c) for Storage and Handling of Hazardous Materials
and Processes.


2. The area of a one-story building of lype IV construction used for
Group E Educational Occupancy shall not be limited provided the build-
ing is equipped throughout with an approved automatic sprinkler system
in accordance with Section 901, is surrounded on all sides by a permanent
open space of not less than sixty (60) feet, and is provided with one-hour
fire-rated smokestop partitions dividing the building into areas not to
exceed thirty thousand (30,000) square feet in floor area.
(d) Assembly Occupancy Area Modification
1. One Story Group A Assembly Buildings non-working stage of
Type III, IV, or V one (1) hour construction which are surrounded on all
sides by a permanent open space of not less than sixty (60) feet, are provided
with an automatic approved sprinkler system, and the assembly floor is
located at, or within twenty-one (21) inches of street or grade level and all
exits meet the street or grade level by ramps having a slope not exceeding one
(I) foot in ten (10) shall not be limited in area.
2. Where there are no balconies or galleries in Large Assembly Places
without a working stage or in Small Assembly Places, with or without a
working stage, and the assembly floor is located at, or within twenty-one
(21) inches of street or grade level and all exits meet the street or grade
level by ramps having a slope not exceeding orie (1) foot in ten (10) feet,
the maximum allowable areas of Type !II, IV, and V construction may be
increased fifty (50) percent over those specified for Assembly occupancies
in Table 400. This increase may be added to the area increase permitted by
section 402.3(b).
3. One (1) story buildings used for participation sport activities such
as tennis, skating and similar acitvitis, limited in occupant content to those
participating in the sports activity, and with no spectator seating permitted,
may be unlimited in area when of Types 11, IV, and V construction and are
surrounded on all sides by not. less than thirty (30) feet of permanent open
space.
4. When used as a place of worship, the allowable areas may be
increased thirty-three and one-third (33-1/3) percent over those specified
for small assembly non-working stage occupancies in Table 400.
5. For sprinkler requirements see Section 901.8(c).
(e) Group E Educational Occupancy Area Modifications-The area of
a one-story Type III, IV or V building may be increased one hundred (100)
percent if the building is surrounded on all sides by a permanent open
space of not less than sixty (60) feet, and there are not less than two exits
provided from each classroom, one of which opens directly to the exterior
of the building. This increase may be added to the area increase permitted
by section 402.3(b).
(f) Group II Hazardous Occupancy Area Modifications -Section 407




4









402.4 -GENERAL PROTECTIVE REFERENCES
The following references to other protective requirements as set forth in
this Code apply to all occupancies or use groups as set forth in this chap-
ter. See Individual Occupancies for Special Protective References.

Subject Section
I. Allowable Height and Area.................................... ........ Table 400
Heights and Areas are based upon type of
construction used. ,
2. Types of Construction...................... ................ Chapter VI
3. Exit Requirements ....................... ....... ............ Chapter XI
4. Protection of Vertical Openings............................. ................ 701
5. Protection of W all Openings............................. .................... 703
6. Sprinklers and Standpipes ......................... 901 to 902, inclusive
7. Mixed Occupancy and Separation Requirements...................... 403
8. Light, Ventilation and Sanitation.................2001 to 2002, inclusive
9. Heating Requirements ............................................ Chapter VIII
and the Standard Mechanical Code
10. Rat-proof Construction........................................... Chapter XIX
I Interior Partitions .............. ....... .......... ... 403
Table 700
702
Chapter XI
12. Exterior W all Requirements.................... ................... Chapter VI
13. I ire W all Requirem ents ............................................ D definitions
402. l(b)
Chapter VI
14. Storage and Handling of Flammable Liquids and Gases shall be in
accordance with the Standard Fire Prevention Code.
15. Furnace and Boiler R oom .................................................... 806

SECTION 403 MIXED OCCUPANCY SEPARATION
REQUIREMENTS
403.1- GENERAL
(a) A building that is used for two or more occupancies, classified within
different occupancy groups, shall be considered a mixed occupancy build-
ing.
I (b) A mixed occupancy building shall be governed by the Height and
Area limitations applying to the principal intended use. Accessory occu-
pancies shall not exceed the area limitations nor be located at a story
height greater than that permitted for such occupancy group and type of
construction being used.
Where minor accessory uses do not occupy more than ten (10) percent of
the area of a building, nor more than the basic area permitted the occu-
pancy by Table 400 for such minor use for the purpose of determining
allowable areas, the major use of the building shqll determine the occu-
pancy classification provided the uses are separated as specific in this
section.


(c) Unless otherwise specifically prescribed in this Section, the separation
of mixed occupancies shall provide not less than one (1) hour fire resist-
ance, except that portions of buildings used as accessory offices or for
customary non-hazardous uses necessary for transacting the principal bus-
iness in Group S Storage and Group F Factory-Industrial occupancies
may be separated by partitions of non-combustible construction without
fire resistance or by partitions constructed of materials as permitted in the
type of construction used.
The following occupancies need not be separated from the uses to which
they are accessory:
1. Assembly rooms having a floor area of not over seven hundred fifty
(750) sq. ft.
2. Administrative and clerical offices and similar rooms which, in the
aggregate, do not exceed twenty-five (25) percent of the floor area of the
major use when not related to Group H Hazardous Occupancies.
(d) The minimum fire resistance of construction separating any two occu-
pancies in a building of mixed occupancy, shall be the higher rating required
for the occupancies being separated, as specified in Table 403.

404.4-SPECIAL PROTECTIVE REFERENCES
(a) The following reference to other protective requirements, as set forth
in this Code, shall apply to all areas classified as assembly occupancies.
Refer to Section 402.4 for General Protective References applicable to all
occupancies.


Subject Section
I. Special Exit Doorway Requirements ...........................Chapter XI
2. Non-Combustible Stairway Requirements ...................Chapter XI
3. Storage and handling of flammable liquids and gases shall be
prohibited.
4. Special Construction Requirements ........................................ 404.5
5. Interior Finish.......... ................... .. .................. 404.6 & 704
6. Sprinklers and Standpipes................................404.7 & Chapter IX
7. Supplementary Lighting Systems......................................... 404.8
8. N on-W working Stage ....................................... ...................... 404.9
9. W working Stage........ ............ ................ ........ ....................404.10
10. Proscenium Curtain ............................... ...............404.11
II. M otion Picture Projection Rooms .....................................404.12
12. Foyers and Lobbies............................... .......... .. .......... 404.13
13. A isles and Seating.................................................................404.14
14. Continental Seating Systems............................ ....:404.15
15. Boxes, Balconies and Galleries.......................... ................404.16
16. Tents for Public Assem bly ...................................................404.17
17. A m usem ent Park Buildings ........................................ ........404.18
18. Churches ..................................................................................................404.19

5








405.3 SPECIAL PROTECTIVE REFERENCES
(a) The following references to other protective requirements, as set
forth in this Code, shall apply to all areas classified as business oc-
cupancies.
Refer to Section 402.4 for General Protective References applicable to
all occupancies.
I. Special Exit Doorway Requirements ..............................Chapter XI
2. Storage and handling of flammable liquids and gases shall be in
accordance with the Standard Fire Prevention Code.
3. Posting of floor loads in business storage areas.................... 110.2
4. H igh Rise Provisions ........ ........... ............... .. ................... 506
5. Automotive Service Stations................................................. 405.4
6. Bow ling A lleys.................................................................. 405.5
7. Furnace and Boiler Room........................... .................... 806

406.3-SPECIAL PROTECTIVE REFERENCES
(a)The following references to other protective requirements, as set forth
in this Code, shall apply to all areas classified as educational occupancies.
Refer to Section 402.4 for General Protective References Applicable to
all Occupancies.
1. Non-combustible Stairways Required............................. Chapter XI
2. Corridors ............................................................... ..... Chapter X I
3. Unilateral Light ................................................ ............ 2001.4
4. Every heating appliance which produces an unprotected open flame
shall be prohibited.
5. Where permanent motion picture projectors using cellulose nitrate
film are installed, booths shall be provided, as set forth in Section 404.12.
6. Rooms used for day care nurseries, kindergarten or first grade pupils
shall not be located above or below the floor of exit discharge. Rooms
used for second grade pupils shall not be located more than one (1) story
above the floor of exit discharge.
7. Furnace and Boiler Room.................................... 806


407.3-SPECIAL PROTECTIVE REFERENCES
(a) The following references to other protective requirements, as set
forth in this Code, shall apply to all areas classified as hazardous oc-
cupancies.
Refer to Section 402.4 for General Protective References applicable to
all occupancies.
1. Special Requirements..................... .... ........... Section 407.4
2. Special Hazardous M materials ...................................... Section 407.5
3. Dry Cleaning, Dyeing 'r Similar High Fire Hazard
Occupancy Utilizing Flammable Solvents............................... Section 407.6
4. Grain Elevators.......................................Section 407.7
5. T ire R ecapping ............................................................Section 407.8
6. Handling or Storage of Cellulose Nitrate Film........... Section 407.9
7. Combustible Fibers........................................ Section 407.10
8. Hay Storage...................... ................... Section 407.11

411.3-SPECIAL PROTECTIVE REFERENCES
(a) The following references to other protective requirements, as set
forth in this Code, shall apply to all areas classified as residential oc-
cupancies.
Refer to Section 402.4 for General Protective References applicable to
all occupancies.
I. Storage and handling of flammable liquids shall be in accordance
with the Standard Fire Prevention Code.
2. Fire Detection Systems on multiple family dwellings and town-
houses, Section 1125, also includes one and two family dwellings.
3. All dwelling units or apartments within Multiple Dwellings shall be
separated with one (1) hour fire-resistive construction (See Section 403.2).
4. See Section 403.3 for separation required between townhouses.
5. See Section 506 for High Rise provisions.













TABLE 400 NOTES


a For peiht modifications and limrita'ions by Occupancy, see*
1, Mezzanines
2 Basements
3. Assembly -Baserments
4 Buseess
5 Educa:ional -Basements
6 Mercantile
7 q sidentral


402 2 (c)
402 2 (d
402 2 (e)
402 2 (f)
402 2 (e)
402 2 (f)
402.2 (b)


b For area modifications and limitations by Occupancy see:
1 Area increase for separation (All occupancies except H)
2 Assembly
3 Business
4 Educational
5 Hazardous
6 Factory-Industrial
7 Mercantile
8 Storage


402.3 (b)
402 3 (d)
402.3 (c)
402 3 (c) & (e)
402 3 (f)
402 3 (c)
402 3 (c) & (g)
402.3 (c) & (h)


c See 901 8 for sprinkler requirements
r In Type 1 Construction, partitions, columns, trusses, girders, beams and floors may be reduced by one (1) hour if the building is equipped with an approved automatic sprinkler system
throughout, but no component or assembly may be less than one (1) hour.
e One (1) hour fire resistive floors shall be provided.
t See Section 506 for high rise requirements
g See Section 402.3 (c) herein for unlimited area provisions
h When five (5) or more stories in height, two (2) hour fire-resistive floors shall be required over the basement or cellar.
i Floors located immediateiLabove useable space in basement or cellars shall have a fire-resistive rating of not less than one (1) hour except where an approved automatic sprinkler system is
provided.
I Modifications in height and area shall not be permitted in Hazardous Occupancies. For detail requirements see Section 407.
k See 412 7 for allowable height and floor areas of Automatic Parking Structures
I See 901 6 for sprinkler requirements in basements and for buildings without access openings
m See 901 7 for sprinkler requirements for Public Garages.
n. Total area after increase permitted by 402 3 (b) shall not exceed 15.000 sq ft
o Height in feet not applicable to storage (S) and factory-industrial (F) occupancies
p When buildings listed under this Column are sprinklered, the height may be increased one (1) story.
'Maximum height 80 feet.


TABLE 400 ALLOWABLE HEIGHTS AND FLOOR AREAS


Letters in Table refer to "Notes".
Height for types of construction is limited to the number of stories shown, or height in feet. NL = No limit.
Allowable areas are shown in thousands of square feet per floor. UA = No limit for floor area.
For modifications to allowable heights and areas, see: 402.2 Height Modifications; 402.3 Area Modifications

TYPE OF CONSTRUCTION

TYPE I TYPE II TYPE III TYPE IV TYPE V TYPE VI
1-Hour Unprot. 1-Hour Unprot. 1-Hour Unprot.

MAXIMUM HEIGHT IN FEET: No Limit 80' 65' 65' 55' 65' 55' 50' 40'

OCCUPANCY uns spr uns spr uns spr uns spr uns spr uns spr uns spr uns spr uns spr
p p p p Pp p p p

A-2 ASSEMBLY SMALL
(working stage)
a,b,I d a ae
Mat. No. of Stories: NL NL NL NL 1 1 1 1 1 1 1 1 1 1
Area: Multi-story: UA UA UA UA
One Story only UA UA UA UA 10.0 30.0 10.0 300 6.0 18.0 90 27.0 6.0 18.0 4.5 13.5 3.0 9.0
A-2 ASSEMBLY SMALL
(without working stage)
a,b. I d a e ae
Max No. of S-'oier NL NL NL NL 2 2 2 2 2 2 2 2 2 2 1 1 1
Area Multt-s:-y. UA UA JA UA 120 240 12.0 240 80 160 120 240 80 160
One Story only UA UA UA UA 120 360 12.0 360 8.0 240 12.0 360 80 240 75 225 50 15.0

a BUSINESS
a. b, g I f f.d I f h h h h h h
Max No of Stories NL NL NL NL 5 5 5 5 2 5 5 5 2 5 2 2 2 2
Area Multi story: UA UA UA UA 25.5 51.0 25.5 51.0 170 340 210 420 14.0 280 13.5 273 90 180
One Story only UA UA UA UA 25.5 76.5 25.5 76.5 170 51.0 210 630 14.0 42.0 135 40.5 90 j-r

E EDUCATIONAL
a.b,l d I I
Max. No of Stories: NL NL NL NL 2 2 2 2 1 1 2 2 1 1 2 2 1 1
Area. Multi-story: UA UA UA UA 18.0 36.0 18.0 36.0 180 36.0 120 240
One Story only UA UA UA UA 18.0 540 18.0 540 120 360 180 540 12.0 36.0 12.0 360 80 240

H HAZARDOUS
b.1
Max. No. of Stories: 0 4 0 3 0 2 0 1 0 1 0 1 0 1 0 0 0 0
Area. Multi-story: 11 5 8.3 7.5
One Story only 115 8.3 7.5 50 5.0 5.0 5.0

R RESIDENTIALh h h h h h
a.b.1 f f,d t h h h 2 h h
Max NO of Stories: NL NL NL NL 3 3 5 5 2 5 5 5 2 5 3 3 2 2
Ara Mul-storyx: UA UA UA UA 180 360 180 360 12.0 24.0 180 360 120 24 10.5 0 70 140
Area:Mu oryony U UA UA UA 180 540 180 54.0 120 360 180 540 12.0 360 10.5 315 7.0 210
One Story only UA UA








SECTION 602-TYPE I CONSTRUCTION
Type I Construction is that type of construction in which the structural
members including exterior walls, interior bearing walls, columns, floors
and roofs are of noncombustible materials and are protected so as to have
resistance not less than that specified for the structural elements as speci-
fied in Table 600. Reference Note: Materials may be used as specified in
Table 600, or as permitted in this chapter.

SECTION 603-TYPE II CONSTRUCTION
Type II Construction is that type of construction in which the structural
members including exterior walls, interior bearing walls, columns, floors
and roofs are of noncombustible materials and are protected so as to have
fire resistance not less than that specified for the structural elements as
specified in Table 600. Reference Note: Materials may be used as specified
in Table 600, or as permitted in this chapter.

SECTION 604-TYPE III CONSTRUCTION
604.1-GENERAL
Type III Construction, is that type in which fire resistance is attained by
the sizes of heavy timber members sawnn or glued-laminated) being not less
than indicated in this Section, or by providing fire resistance not less than
one (I) hour where materials other than wood of heavy timber sizes are
used; by the avoidance of concealed spaces under floors and roofs; by the
use of approved fastenings, construction details and adhesives for structu-
ral members; and by providing the required degree of fire resistance in
exterior and interior walls. Reference Note: Materials may be used as spec-
ified in Table 600, or as permitted in this chapter.

604.2-COLUMNS
(a) Wood columns may be sawn or glued-laminated and shall be not less
than eight (8) inches, nominal, in any dimension when supporting floor
loads, and not less than six (6) inches, nominal, in width and eight (8)
inches, nominal, in depth when supporting roof and ceiling loads only.
(b) Columns shall be continuous or superimposed throughout all stories
by means of reinforced concrete or metal caps with brackets, or shall be
connected by properly designed steel or iron caps, with pintles and base
plates, or by timber splice plates affixed to the columns by means of metal
connectors housed within the contact faces, or by other approved methods.

604.3-FLOOR FRAMING
(a) Beams and girders of wood may be sawn or glued-laminated and
shall be not less than six (6) inches, nominal, in width and not less than ten
(10) inches, nominal, in depth.
(b) Framed or glued-laminated arches which spring from the floor line
and support floor loads shall be not less than eight (8) inches, nominal, in
any dimension.


(c) Framed timber trusses supporting floor loads shall have members of
not less than eight (8) inches, nominal, in any dimension.

604.4-ROOF FRAMING
(a) Framed or glued-laminated arches for roof construction which spring
from the floor line and do not support floor loads shall have members not
less than six (6) inches, nominal, in width and eight (8) inches, nominal, in
depth for the lower of the height and not less than six (6) inches, nominal,
in any dimension for the upper half of the height.
(b) Framed or glued-laminated arches for roof construction which spring
from the top of walls or wall abutments, framed timber trusses and other
roof framing which do not support floor loads, shall have members not
less than four (4) inches, nominal, in width and not less than six (6) inches,
nominal, in depth. Spaced members may be composed of two or more
pieces not less than three (3) inches, nominal, in thickness when blocked
solidly throughout their intervening spaces or when such spaces are tightly
closed by a continuous wood cover plate of not less than two (2) inches,
nominal, in thickness, secured to the underside of the members. Splice
plates shall be no less than three (3) inches, nominal, in thickness. When
protected by approved automatic sprinklers under the roof deck, such
framing members shall be not less than three (3) inches, nominal, in width.

604.5-CONSTRUCTION DETAILS
(a) Wall plate boxes of self-releasing type, or approved hangers, shall be
provided where beams and girders enter masonry. An air space of one-half
(/2) inch shall be provided at the top, ends and sides of the member unless
approved durable or treated wood is used.
(b) Girders and beams shall be closely fitted around columns and adjoin-
ing ends shall be cross-tied to each other, or inter-tied by caps or ties, to
transfer horizontal loads across the joint. Wood bolsters may be placed on
tops of columns which support roof loads only.
(c) Where intermediate beams are used to support floors, they shall rest
on top of the girders, or shall be supported by ledgers or blocks securely
fastened to the sides of the girders, or they may be supported by approved
metal hangers into which the ends of the beams shall be fitted closely.
(d) Columns, beams, girders, arches and trusses of material other than
wood shall have a fire resistance rating of not less than one (I) hour.
(e) Wood beams and girders supported by walls required to have a fire
resistance rating of two hours or more shall have not less than four (4)
inches of solid masonry between their ends and the outside face of the wall,
and between adjacent beams.
(f) Adequate roof anchorage shall be provided.

604.6-FLOOR DECKS
Floors shall be without concealed spaces. They shall be of sawn or
glued-laminated plank, splined, or tongue and grooved, of not less than A
three (3) inches, nominal, in thickness, or of planks not less than four (4) o








inches, nominal, in width set on edge and well spiked together. The planks
shall be laid so that no continuous line of joints will occur except at points
of support and they shall not be spiked to supporting girders. Planks shall
be covered with one (I) inch, nominal, tongue and groove flooring laid
crosswise or diagonally or with one-half () inch plywood. Planks and
flooring shall not extend closer than one-half () inch to walls to provide
an expansion joint, and the joint shall be covered at top or bottom.

604.7-ROOF DECKS
Roofs shall be without concealed spaces and roof decks shall be sawn or
glued-laminated, splined or tongue and grooved plank, not less than two
(2) inches, nominal, in thickness, or of planks not less than three (3) inches,
nominal, in width, set on edge and spiked together as required for floors,
or of one and one-eighth (I ') inch tongue and grooved plywood bonded
with exterior glue. Other types of decking may be used when approved by
the Building Official.

604.8-WALLS
Bearing portions of exterior and interior walls shall be of approved non-
combustible materials and shall provide fire resistance ratings in accor-
dance with Table 600.
Non-bearing portions of exterior walls shall be of approved non-com-
bustible materials and shall provide fire resistance ratings in accordance
with Table 600.
Exception: Where a horizontal separation of at least twenty (20) feet is
provided, wood columns, arches, beams and roof decks conforming to
heavy timber sizes may be used externally.

SECTION 605-TYPE IV CONSTRUCTION
Type IV Construction is construction in which the structural members
including exterior walls, interior bearing walls, columns, floors and roofs
are of noncombustible materials. Type IV Construction may be protected
or unprotected. Fire resistance requirements for structural elements of
Type IV Construction shall be as specified in Table 600. Reference Note:
Materials may be used as specified in Table 600, or as permitted in this
Chapter.

SECTION 606-TYPE V CONSTRUCTION
Type V Construction is construction in which the exterior bearing and
nonbearing walls are of noncombustible material and have fire resistance
not less than that specified in Table 600; bearing portions of interior walls
are of material permitted in Table 600, and have fire resistance not less
than that specified in Table 600; and floors, roofs and interior framing are
wholly or partly of wood or other approved materials. Type V Construc-
tion may be either protected or unprotected. Fire resistance requirements
for structural elements of Type V Construction shall be as specified in
Table 600. Reference Note: Materials may be used as specified in Table
600, or as permitted in this Chapter.


SECTION 607-TYPE VI CONSTRUCTION
Type VI Construction is construction in which the exterior bearing and
nonbearing walls and partitions, floors and roofs and their supports are or
partly of wood or other approved materials. Type VI Construction may be
either protected or unprotected. Fire resistance requirements for structural
elements of Type VI Construction shall be as specified in Table 600. Refer-
ence Note: Materials may be used as specified in Table 600, or as permitted
in this Chapter.

608.5-UNUSABLE SPACE
In one (I) hour fire-resistive construction the ceiling may be omitted
over unusable crawl space and flooring may be omitted when unusable
attic space occurs above.


SECTION 609-MIXED TYPES OF CONSTRUCTION
609.1 AREA LIMITATIONS
When two (2) or more types of construction not separated by fire walls
occur in the same building, the area of the entire building shall not exceed
the least area permitted based on occupancy for the types of construction
used in the building.

609.2 HEIGHT LIMITATIONS
When two (2) or more types of construction occur in the same building,
the height of the entire building shall not exceed the least height permitted
based on occupancy for the types of construction used in the building.









TABLE 600-FIRE PROTECTIVE REQUIREMENTS-Continued


STRUCTURAL ELEMENT



FLOOR/CEILING
CONSTRUCTION

IROOF/CEILING
( CONSTRUCTION (h)


EXTERIOR BEARING
WALLS (h) (I)
Horizontal separation-
(distance from common
property line or assumed
property line)
0 t to 3 ft (c)
over 3 t to 10 ft (c)
over 10ft. to 20 ft. (c)
over 20 ft. to 30 ft.
over 30 ft.


p ro V t

Unprotected


(% indicates percent of protected and unprotected wall openings permitted. See Section 703.1 for protection requirements.)


4(0%)
4(10%)
4(20%)
4(40%)
4(NL)


3(0%)
3(10%)
3(20%)
3(40%)
3(NL)


3(0%)(b)
2(10%)(b)
2(20%)(b)
1(40%)
1(NL)


2(0%)
1(10%)
1(20%)
1(40%)
1(NL)


1(0%)
1(10%)
NC(20%)
NC(40%)
NC(NL)


3(0%)(b)
2(10%)(b)
2(20%)(b)
1(40%)
1)NL)


3(0%)(b)
2(10%)(b)
2(20%)(b)
1(40%)
1(NL)


1(0%)
1(20%)
1(40%)
1(60%)
1(NL)


1(0%)
0(20%)
0(40%)
0(60%)
0(NL)


EXTERIOR NONBEARING I I
WALLS (h), (I), (k) (% indicates percent of protected and unprotected wall openings permitted. See Section 703.1 for protection requirements.)
Horizontal separation-
(distance from common
property line or assumed
property line).
O ft to 3 ft (c) 3-(0%) 3-(0%) 3-(0%)(b) 2-(0%) 1-(0%) 3-(0%)(b) 3-(0%)(b) 1(0%) 1-(0%)
over 311 to 10 ft (c) 2-(10%) 2-(10%) 2-(10%)(b) 1-(10%) 1-(10%) 2-(10%)(b) 2-(10%)(b) 1-(20%) 0-(20%)
over 10 It to 20 It (c) 2-(20%) 2-(20%) 2-(20%)(b) 1-(20%) NC-(20%) 2-(20%)(b) 2-(20%)(b) 1-(40%) 0-(40%)
over 20 ft. to 30 ft 1-(40%) 1-(40%) 1-(40%) NC-(40%) NC-(40%) 1-(40%) 1-(40%) 0-(60%) 0-(60%)
over 30 It NC (NL)I NC(NL) NC(NL)I NC(NL)I NC(NL)I NC(NL)I NC(NL)I 0-(NL) 0-(NL)

PARTY AND FIRE
WALLS (a) 4 4 4 4 4 4 4 4 4

INTERIOR BEARING
WALLS (1) (1)
Supporting more than
one floor, columns or
other bearing walls 4 3 2 1 NC 1 0 1 0
Supporting one floor only 3 2 1 1 NC 1 0 1 0
Supporting a roof only 3 2 1 1 NC 1 0 1 0

INTERIOR NONBEARING
PARTITIONS See Sections 403, 701 and 702

COLUMNS (e) See Sec 604
Supporting more than one NC 0
floor or other columns 4 3 H(d) NC 0 1 0
Supporting one floor only 3 2 H(d) 1 NC 1 0 1 0
Supporting a roof only 3 2 Hd) 1 NC 1 0 1 0

BEAMS, GIRDERS,
TRUSSES & See Sec. 604
ARCHES (e)
Supporting more than
one floor or columns 4 3 H(d) 1 NC 1 0 1 0
Supporting one floor only 3 2 H(d) 1 NC 1 0 1 0
Supporting a root only 1',(1) 1(f,g) H(d) 1 NC 1 0 1 0

NC Non Combustible
(NL) No Limits
H Hedvy Timber Sizes
See Section 604









TABLE 600 FIRE PROTECTIVE REQUIREMENTS

a. Party walls and fire walls shall extend not less than three (3) feet
above the roof, except that fire walls need not extend above the roof where
the roof is of noncombustible construction in Types I, II and IV Construc-
tion or fire retardant treated wood in Types II, V and VI Construction for
area within forty (40) feet of each side of the wall.
b. Exterior walls shall extend not less Itaa nghteen (1l8 inches above
the roof, except that parapet walls need r,nc e constructed on buildings
where the roof slopes more than four (4i .naces vertical to twelve (12)
inches horizontal from the back of the extwor wall of such buildings or
where the exterior wall of such building is hcated fifteen (15) feet or more
distant from the common property line or the center line of a public way.
c. See Section 703 for protection of wall ceenings.
d. Where horizontal separation of twenty. i20) feet or more is provided,
wood columns, arches, beams, and roof de:c conforming to heavy timber
sizes may be used externally.
e. Columns, beams, trusses and girders supporting masonry or concrete
walls eight (8) feet or more in height shall h-e the fire resistance required
for the wall they support, but in no case less tnarn one (1) hour.
f. In two (2) story buildings approved Fire Retardant Treated Wood
may be used. In buildings of Group A Assembly and Group E Educa-
tional occupancies, fireproofing may be omitted where structural members
support a roof only and are twenty (20) feet or more clear above any floor
or balcony.
g. In one (1) story buildings, structural members of heavy timber sizes
may be used as an alternate to unprotected structural roof members. Sta-
diums, field houses and arenas with heavy timber wood dome roofs are
permitted. An approved automatic sprinkler system shall be installed in
those areas where twenty (20) feet clearance to the floor or balcony below
is not provided.
h. See Section 716 for Penthouses and Roof Structures.
i. The use of combustible construction for interior bearing partitions
shall be limited to the support of not more than two (2) floors and a root.
j. Exterior walls shall be fire tested in accordance with Section 601.2.
The fire resistance requirements for exterior walls with five (5) feet or less
horizontal separation shall be based upon both interior and exterior fire
exposure. The fire resistance requirements for exterior walls with more
than five (5) feet horizontal separation shall be based upon interior fire
exposure only.
k. See Section 301.3(f) for fire resistance requirements for exterior walls
of type IV buildings in Fire District.
I. Walls or panels shall be of non-combustible material or exterior grade
fire retardant treated wood.


Table 5-3. Occupant Load for Determining Exit Requirements.

Occupancy Types ft per person

Assembly
Concentrated use (auditorium, dance floor) .................. 7(net area)
Less concentrated (conference, dining, etc.) .................. 15(net area)
Standing or waiting space ............................... 3(net area)
Bench-type seating .................................... 18 in./person
Fixed seating ................... ..................... see Code text
Educational
Classroom s ......................................... 20(net area)
Shops .... .... .... ...... .... ... .. .. ......... .. 50(net area)
Day nurseries with sleeping facilities and child day care centers .. 35(net area)
Health Care/Penal
Sleeping departments ................................. 120 (gross)
Inpatient treatment departments .......................... 240 (gross)
Residential
One- and two-family dwellings ........................... no requirement
Apartments ................. ........................ 200 (gross)
Hotels ................. ................... ....... 200 (gross)
Dormitories ................. ........................ 200 (gross)
Lodging/rooming houses ............................ 200 (gross)
Mercantile
Street floor ................ ................... ..... 30 (gross)
Upper floors ...................................... .. 60 (gross)
Office areas ................. ........................ 100 (gross)
Storage/shipping areas .: .............................. 300 (gross)
Covered malls
First floor ........ ........ ......... ............ 30 (gross)
Second floor ....................................... 60 (gross)
Business ................. ......... ...... .......... 100 (gross)
Industrial ................. ................... ...... 100 (gross)

S." In calculating exit requirements, open mezzanine or balcony occupant loads shall be added to the occupant
load of the floor below.
For occupancy types not listed (group and family day care centers and storage) there are no special
requirements.












II








TABLE 700

MINIMUM FIRE RESISTANCE OF WALLS, PARTITIONS
AND OPENING PROTECTIVE1


Walls and Opening
Component Partitions Protectives
(Hours) (Hours)

VERTICAL SHAFTS

General:
4 or more stories 2 11 B
less than 4 stories 1 1 B
Stairways and Exits:
4 or more stories 2 1 % B
less than 4 stories 12 1 B2
Elevators:
4 or more stories 2 1 6 B
less than 4 stories 1 1 B
Refuse chutes 2 1 Y B

WALLS AND PARTITIONS

fire walls' 4 3 A
occupancy separation SEE SECTION 403.2
within tenant space SEE NOTE 4 OF THIS TABLE
tenant space (see also 403.2) 1 3/ C
horizontal exit 2 1 Y B
corridors, exit access (note 5 & 6) 1 20 min.
smoke partitions SEE SECTION 1104
refuse chute access room 1 3% C
refuse vault 2 1 V B
hazardous use separations SEE SECTION 407
high rise buildings SEE SECTION 506
mall buildings SEE SECTION 507
assembly buildings SEE SECTION 404


'Table 600 may require greater fire resistance of walls to insure structural stability.
'All exits and stairways in Group H hazardous occupancies shall be two (2) hours with 1 V hour B door
assemblies.
'See also Section 402.1 (b).
'Partitions dividing portions of stores, offices or similar places occupied by one tenant only and which do
not establish a corridor serving an occupant load of thirty (30) or more persons may be movable, partial
or full height, temporary or permanent and may be constructed of any material approved by this code
provided that:
a. They do not block required exits' (without providing alternative conforming exits) and they do
not establish an exit corridor.
b. Their location is restricted by means of permanent tracks, guides or other approved methods.
c. Flammability shall be limited to materials having a flame spread classification as set forth in
Table No. 704.4 for rooms or areas.
'See 702.3 Exit access corridors that serve an occupant load greater than thirty (30) persons shall have
a minimum fire resistance rating of one (1) hour.
'See section 509.0 for sprinklered Group I Institutional buildings.


7Fire rated bathroom/restroom doors are not required when opening onto
fire rated halls, corridors, exit access provided:
(a) No other rooms open off of the bathroom/restroom and
(b) No gas or electrical appliances are located in the bathroom/res-
troom and
(c) The walls, partitions, floor and ceiling of the bathroom/restroom
have a fire rating at least equal to the rating of the hall, corridor or exit
access and
(d) The bathroom/restroom is not used for any other purpose than it is
designed for.


702.3 WALL AND PARTITION REQUIREMENTS BY
OCCUPANCY
All walls and partitions shall provide not less than the degree of fire
resistance required in Table 700, except as may be specified elsewhere in
this code.
GROUP B BUSINESS BUILDINGS-Partitions along exit access
corridors shall be of one (1) hour fire resistant construction. Regardless of
Type of Construction, non-fire rated partitions may be constructed within
rooms or spaces not exceeding three thousand (3,000) square feet in area.
Such rooms or space shall be enclosed with permanent partitions having
not less than one (1) hour fire-resistive construction. Exit access corridors,
within the 3,000 square foot space, that serve an occupant load greater
than thirty (30) persons shall have a minimum fire resistance rating of one
(1) hour. (See Section 403 for Mixed Occupancy and Separation Require-
ments, Section 403.2 for Tenant Separation, and Section 704.3 for Ceiling
and Interior Wall Finish Requirements).
GROUP R RESIDENTIAL-Except in one and two family dwellings,
all partitions along exit access corridors or partitions that separate apart-
ments, dormitory rooms or hotel rooms, or that separate apartments,
dormitory rooms, or hotel rooms from other occupancies, shall be of not
less than one (1) hour fire resistive construction. Non-fire rated partitions
may be permitted within individual dwelling units. The tenant separation
partition in a two family dwelling shall comply with Section 403.2.
GROUP E EDUCATIONAL-Partitions along exit access corridors,
in buildings housing Group E, Educational Occupancies, shall be of not
less than one (1) hour fire resistant construction.
Note: See Section 1104.3-Exit Access Corridors for the use of exit
access corridors for return and/or exhaust air from adjoiniuig spaces.






I Z







1203.1-FLOOR LOADS
MINIMUM UNIFORMLY DISTRIBUTED LIVE LOADS

Live Load
Occupancy or Use (psf)'
Apartments (see Residential)
Arm ories and drill room s ................................... ................. .... .... .. 150
Assembly halls and other places of assembly:
F ixed seats .......................... ......... ................... .......... ........... ......... ........ 50
M o va b le seats ............................................................................... ................ 100
P platform s (assem bly)........... .................................. ...................................... 100
Balcony (exterior) ........................................... ...... ......... ......... 60
On one and two family residences................................................. 40
Bowling alleys, poolrooms and similar recreational areas.............................75
Corridors:
First Floor ...................... 100
Other floors, same as occupancy served except as indicated.................... 100
D ance halls and ballroom s.............................................. ........................ .. 100
Dining rooms and restaurants ............................. .............. 100
Dwellings (sec Residential)
F ire escapes .................................. ............. ......................... ..... ................ 100
On multi- or single-family residential buildings only..................................40
G arages (passenger cars only) ...................................................... ............... 50
For trucks and buses use AASHO* lane loads (see Table 2
for concentrated load requirements)
Grandstands (see Reviewing Stands)
Gymnasiums, main floors and balconies................................................... 100
Hospitals:
Operating rooms, laboratories ....................... ....... 60
Private rooms......... ........... .. ............ .................................... 40
W yards ........................................ ......................... ................................. 40
Corridors, above first floor....................................... ...................... 80
Hotels (see Residential)
Libraries:
Reading rooms ............................ .. ........ ............ 60
Stack rooms (books and shelving at 65 pcf) ......................................... 125
Corridors, above first floor.............................................................. 80
Manufacturing:
Light.................. ....... ........ ........... 100
Heavy ... ....................... ....... ........ .. .... 150
M arquees ................. .......... ..................... ................... 75
Office Buildings:
O ffices........................... ....... .. .... .. .............. 50
L ob bies................................................... .......... ............... 100
Corridors, above first floor .................................... ............ .... 80
File and computer rooms require heavier loads based
upon anticipated occupancy


Penal institutions:
Cell blocks .......................... 40
C orridors... ................... ............................................................................ 100
Residential:
Multifamily houses:
Private apartm ents ......... ........................................... ............................ 40
P public room s........... ................ ......... .... ....................... ............ 100
C o rrid o rs............................................. .... ........ ............ ........................ 80
Dwellings:
Sleeping room s .. ................... ............................. ....... ... 30
A ttics w ith storage................................... ....... ...... ............................ 30
A ttics w without storage ....................... ....... .. ....... ..... ....... 10
A ll other room s.............................................. ............................................. 40
Hotels:
G uest room s............. .. ................ .. ... .... ........................... 40
P public room s........................................................................... ... .... 100
Corridors serving public rooms....................................... 100
C orrid ors .................... .................. ............... ........ .. ....... .. .... 80
Reviewing stands and bleachers**......................... 100
Schools:
C classroom s................. ....... ....... ... ................................... 40
C orrid ors.......................... ....................... .................................... 80
Sidewalks, vehicular drivew;,\s ,tnd yards,
subject to trucking......................................................................... ....... ...... 200
Skating rinks......................................................................................................................... 100
Stairs and exitw ays............................................................................................... 100
Storage warehouse:
Light.................................................................................................................... ...... 125
H eavy ................................................................................................................... 250
Stores:
Retail:
First floor, rooms........................... 75
U paper floors ....... ... ... ......................................... ....................... ..... 75
W wholesale .................................................. ............................................................. 100
Theaters:
A isles, corridors and lobbies........................................................... 100
O orchestra floors................................................................ ........................... 50
B alco n ies.......................... .... ........................... ......... ........................ ...... 50
Stage floors................................. ......... ......................... .... 150
Yards and terraces, pedestrians ............................ ............... ........... .. 100
*American Association of State Highway Officials.
**For detailed recommendations, see American National Standard for
Tents, Grandstands and Air-Supported Structures Used for Places of
Assembly ANSI Z20.3 (NFiPA No. 102).