1997
UNIFORM
BUILDING
CODE"
VOLUME 1
ADMINISTRATIVE, FIRE- AND LIFE-SAFETY,
AND FIELD INSPECTION PROVISIONS=
Publication Dare: April 1997
SSN 1806-065
ISBN 1-884590.87-X (sot cover edition)
ISBN 1-885590-88-3 (loose leaf edition)
ISBN 1.884590.93-4 evo] set—soft cover)
ISBN 1-884590-94-2 (3-0 ser—laose leaf)
COPYRIGHT © 1994, 1995, 1996, 1997
by
International Conference of Building Officials
5360 WORKMAN vt ROAD
whittien CaUrOaNia S060!
(300) 264 4aDm > 60 ease
98
PRINTED IN THE USA.Preface
“The Uniform Building Code™ is dedicated 10 the development of better building construction and yreatr safety tothe public by
«anifemity in building laws. The eode is founded on broad-based principles that make possible the use of new materials ond new
toasticton systems,
“The Uniform Building Cone was fist enacted by the International Conference of Buiing Officials at he Sith Annual Business
Mecting held in Phoenix, Arizona, Otober 18-21, 1927, Revised editions ofthis code havs heen published since tha time a approx
imate three-year intervals, New editions incacporate changes approved since the last edition,
“The Uniform Building Code is designed to be compatible wit related publication to provide a compete set of documents for
tegulatory use, See the publications list following this preface for a isting ofthe complete family of Uniform Codes and related
publications
Code Changes. The ICBO code development process has been suspended by the Board of Directors and, because of this action,
changes tothe Uniform Building Code will not be processed. For nore information, write to th (nieraational Conference of Buld-
ing Officials, $360 Workman Mill Road, Whiter, California 90601-2098, An analysis of changes between ections i published in
the Analysis of Revisions to the Uniform Codes
Marginal Markings, Soli vertical lines inthe margins within the body ofthe code indicate a change from the requitements of the
1994 edition except where an entire chapter was cevised,& new chapter Was added or @ change was minor. Where an entre chapter
swag revised ofa new chapter was aed,» notation appears nt he beginning of that chaptee The lttex Fcepeating in line vertically in
‘he margin indicates the the provision i maintained Under the code change procedures of the International Fite Cade Tstitut. Dee
tion indicators (9 ae provided in the margin where paragraph ov tem listing hasbeen deleted if Te deletion resulted ina change of
requirements
“Three-Volume Set. Provisions ofthe Uniform Building Code have boon divided into athtee-volume set Volume 1 accommodates
administrative, fie- and life-safety, and field inspection provisions. Chapters L through 15 and Chapters 24 though 35 at printed in
Volume I ia their entirety: Any appendix chapters associated with these chapters are preted in their entirety atthe end of Volume 1
LExcetpis of certain chapters fom Volume 2 are reprinted in Volume 1 to provide gieatr usabili
‘Volume 2 accommodates structural engineering design provisions, and specifically contains Chapters 16 though 23 printed io
«hele entirety Included inthis Volume ate design stadards that have been add to their respective chapters a divisions of the chap
ters. Any appendix chaptrs associated with these chapters ae printed in their entcty atthe end of Volume 2. Excerps of cettan
chapters {rom Volume 1 ave reprinted in Volume 2 1o provide greater usability.
‘Volume 3 contains material, testing and installation standards.
Metrication. The Uniform Building Code wes metricated in the 1994 edition. The metric conversions are provided in parenthesis
following the English units. Wheee industry has made metsc conversions available, the conversions conform to current industry
standards
Focmulas ae also provided with metric equivalents. Metric equivalent formulas immediately follow the English formula and are
denoted by "For SI:” preceding the metric equivalent. Some formas do sot use dimensions and, tus, ae not provided witha metic
‘equivalent, Muliplying conversion factors have been provided for formulas where mettic forms were unavailable, Table ae pro-
vided with multiplying conversion factors in subheadings for each tabulated unit of measurementCODES AND RELATED PUBLICATIONS
“The Intemational Conterenee of Bui
Offcials (1CBO) publishes a Fan of eaes, cach correlated withthe Uni uid
Cade” to provide jurstictions witha complete set of builine-relsted tegulaions For aopnn. Some af These cides ae published in
liliaion sth ther axganiae.oas sch s the Internat
1a Fire Coe Institute HFC) 3nd the Internationa Coe Canc (ICC) Ret
{ons materials and relaed cones also ro avilable to improve knaw.edge of cote eaforcenent and adminstexion of hailing mspc=
tion programs, Publicstions and prouucts ar continually being added, 0 inquiies should he directed to Conference headquarters for 3
Fisting of available products. Many codes ant referenceh ae als available on CD. ROM ar Happy dink. These ae dered by (*) The
following publeaions and products ure availa from ICBO:
coves
"*Caiform Building Code, Volumes 1. 2 and 3. The most widely
top made busing code in the United States, tho performance
based Uniform Building Code isa proven document, meeting the reeis
‘of government units charged withthe enforcement of building rayulse
tions. Volume I contains administative ie» and ite-safety ana field
inspection provisions: Volume 2 containg structural enginecring design
provisions; and Volume 3 contains material, testing and installation
Sndards
"Uniform Mechanical Code™. Provides 2 complet et of require.
mens forthe design. constriction, iastalladon aod asintenanee of
eating, venlaing cooling ard eigration systems; incinerate apd
‘her heat-praducing applanoes,
International Plumbing Code™. Provides consisent and tech
cally advanced requirements that canbe used across the country © pro
‘ide comprehensive regulations of modern plumbing systems. Setting
‘minimum regulations for plumbing facilites in trms oF performance
‘bjestives, the IDC provides forthe acceptance of new and innovative
products, materials and systems
International Private Sewage Dispessl Code. Proves Nexiil
in the cevelopencet af safety and sae inva sewage disposal
systems and incliges detailed provisions foe all aspects oF desig,
‘ntalltion and inspection of pavate sewage disposal systems
nternational Mechanical Code™. Establishes minimurn repule-
tions for mechanical seems using presriptive and performance
relate provisions, I is Founded on broad-bssed principles that make
possible the use of new materials and new mecaanical designs
Uniform Zoning Code ". This code is decicated to intelligent com
‘munity development and tothe benefit ofthe public welre dy provid:
ing a means of promoting uniformity in roning laws snd enforcement.
"Uniform Fire Code™, Volumes 1 and 2 The premier most fe
code in the United Stars, the Uniform Fire Code es foeth provisions
nocessary fot fie prevention aad fie protection. Published by the
Iteznatignal Fite Code last, the Uniform Fie Cade is enirsed by
the Waste Fie Chiets Association the Imemational Association ¢
Fire Chiefs nd [CHO lume { contains cide provisions compatible
with ke Uniform Building Code, ad Nolume 2 Gotains standards rt
‘xenced from the cade provisions,
*Urban-Wildland Interface Code™. Fiomugatod by IFCI, this
‘ods regulates both tnd use and he bulk: Govironment in desigaated ur
han-wiand terface areas. This newly developed code isthe only
model code that bases constuction requirements on the fite-hazard
Severity exposed to the structure, Developed under grant fiom che
Federal Emergency Manageroent Agency, this code is the iret result,
‘of hazard mitigation mestoys bel ater devastating wildfires.
Uniform Housing Code™. Provides complcte requirements affect:
ing conservation and rehabilitation of housing. Ts regan ae om
pratile with the Uniform Building Cod
Uniform Code for the Abatement of Dangerous Buildings”. A.
ede compatible with the Criform Building Code and the Uniform
Housing Code which poviees equitable remosios consistent with wher
Jas fo the repair, vacation or demolition of dangerous buildings.
Uniforin Sig Code”. Desicated tothe development of beter sign
egulation, its requitemenrs pean tall siges and sign construction
sntached 19 buildings.
Uniform Administrative Code™, This code covers administrative
rene in connection with adoption of the Uniform Building Code
Uniform Mechanical Code and rated codes. contains provisions
‘which rele mo site preparation, construction, altri, moving, repait
‘nd use and occupancies of buitcings or structures and building servic:
‘quipmen, including plombing,cletricel and mechanical regulations,
‘The coe is compute with the alminsiraive prisons of al codes
published bythe Conference
Uniform Building Security Code™. Tus code establishes mini
‘um standards co make dwelling units rsisant to unlawl este It
‘regulates swinging doors, sliding doors, windows and hardware ia con-
‘ction wth divelling units of sporiment houses or one- and wo-faily
er.
303.4 Access and Exit Facilities. Exits shall be provided as
Specified in Chapter 10. (For special exiting eequirements, see
303.22
308.1
Section 1017.2.) Acces 10, and egress From, buildings eeguired 0
be accessible sill he provided a6 specified in Chapter 11
For amusement buildings, see Section 408,
[303.5 Light, Ventilation and Sanitation. Light and ventilation
Shall be in accordance with Chapter 12. The number of plumbing
fixtures shall nat be less than specified in Seetion 2902.2,
303.6 Shaft and Exit Enclosures. Exits shall he enclosed as
‘Specified in Chapter 30
Elevator shafts, veot shafts and other vertical openings shall be
‘enclosed and the enclosure shal be as specified in Section 711
303.7 Sprinkler and Standpipe Systems. When required by
Section 9042.1 or other provisions ofthis code, automatic sprit:
ler sysems and stancpipes shall be designed and installed as
specified in Chapter 9
303.8 Special Hazards. Siages shal be equipped with automat-
je ventilators us required in Section 405.3.3
Chimneys and heating apparatus shall conform to the requite-
ments of Chapter 31 of this code and the Mechanical Code.
Motion picture machine booths shall conform to the require:
mens of Section £06, ‘
Prosceaiuim curtains shall confoum io the requirements set forth
in UBC Standard 41, which isa part ofthis code, (See Chapter
35, Patt IL)
‘Class {, [Lor I-A liquids shall not be placed or stored in any
Group A Occupancy.
When heating equipment sooms are cequieed t9 be separated in
accordance sith Section 302.5, exterior openings in boiler room
‘oF oom containing centeal heating equipment if located below
‘openings in another story oF i less than £0 feet (3048 mm) from
fther doors or windows of the sume building shall be protected by
a fire assembly having a three-fourths-hour lire protection rating,
Such fire assemblies shall be fixed, automatic or sel-closing. For
heating equipment occupancy separation, see Section 302.5.
303.9 Fire Alarm Systems, An approved fire alarm system
Salle installed asset forth in the Fize Code in Group A, Di
sions 1, 2 and 2.1 Occupancies.
For amusement building alarm systems, see Section 408 5.1.
‘SECTION 304 — REQUIREMENTS FOR GROUP B
OCCUPANCIES
304.1 Group B Occupaneies Defined.
Group B Occupancies shall include buildings, structures, oF
portions thereof, fo professional or servicetype transac
tions, which are aot stereied 28 Group H Oceupancies. Such oc
Ccupancies include oecupancies for the storage of eecords and
accounts, and eating and drinking establishments with an occu
pant load of less than 50. Business occupancies shall include, but
not be limited to, the following,
1. Animal hospitals, Kennels, pounds.
2 Automobile and other motor vebicle showrooms,
3. Banks,
4, Barber shops.
5. Beauty shops
6, Car washes,
7. Civic administration,
8, Outpatient clinic and medical offices (where five or less
patients in 1 tenant space ate incapable of unassisted self-
preservation),
15308.1
bos2as
9. Dry cleaning pick-up and delivery stations and sell-seriee
10, Educational occupancies abave the 12th grade
1. Bleetronie data processing
12, Fine stations,
13, Florists and aurseries,
‘+ drimanacemmiasianemiaitiiay
15. Laundry pick-up and delivery stations und self-service.
16. Potce stations.
17 Post offices
18. Print shops.
19, Professional services such as attomey, dentist, physician,
20, Radio and television stations,
21, Telephone exchanges.
B.
304.2 Construction, Height and Allowable Area.
Fr occupancy separations see Table 3.
3042.1 General, Buildings o: parts of buildings classed as
Group 8 Oscupancies because ofthe use or character of the vce
pany shall be limited to the types of constuction set forth in
‘Table S-B, Such occupancies shall not exceed, in stea or height,
the limits specified in Sections 508, 505 and $06 aad shall comply
With the provisions of this seetioa
3042.2 Special provisions
304.2.2.1 Laboratories and vocational shops. Laburstoties
‘and vocational shops in buildings used for educational purposes,
fand similar areas containing hazardous materials, shall be sepa:
rate from each other and other partions of the building by not less
than a one-hour Lte-resistive occupancy separation. When the
{quantities of hazardous matecals in such uses do wot exceed those
listed in Table 3-D of 3B, the requirements of Sections 307.5 end
307.8 shal apply. When the quantities ot hazacdous materials in
‘such uses exceed those listed in Table 3-D or 3, the use shall be
classified as the appropriate Group H Occupancy.
Occupants in Iuboratories having an area in excess of 200
ssquate feet (18.6 m2) shall have access a least tw0 exits or ex
‘access doors from the room and all portions ofthe room sill be
within 75 feet (22 860 mm) of an exit or exitaceess door
304.2.2.2 Amusement buildings. Amusement buildings with
fan occupant load of less than $0 shall comply with Section 408,
304.3 Location on Property. For fre-resisive protection of ex:
walls and openiags, as determined by localion on peaperty,
see Section 503 and Chapter 6
304.4 Access and Means of Egress Facilities. Means of egress
‘hall be provided as specified in Chapler 10. See