National Building Code of Canada: 1960

(1)

PART 1 ADMINISTRATION

The National Building Code is published by the National Research

Council as an advisory document for use throughout Canada. It is

advisory only and has no legal standing until and unless adopted

or enaded for specific use by a provincial government or

muni-cipal administration. The Code is essentially a set

of

minimum

regulations respecting the safety of buildings with reference to

public health, fire protection and structural sufficien,cy. It is not

and is not intended to be a text-book of building design, advice

upon which should be sought from professional sources. The Code

relates to buildings and simple structures but it is not intended for

use with specialized civil engineering structures. Its essential

purpose is the promotion of public safety through the use of

desirable building standards throughout Canada.

Third Printing

including all Corrections and Revisions

to

July

1963

Issued by the ASSOCIATE COMMITTEE ON THE NATIONAL BUILDING CODE

NATIONAL RESEARCH COUNCIL

OTTAWA, CANADA

NRC No.

~800-A

Printed in Canada

Price: 30 cents

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(2)

Association of Canadian Fire Marshals

Association of Consulting Engineers of Canada

Canadian Association of Fire Chiefs

Canadian Labour Congress

Canadian Construction Association

Canadian Federation of Mayors and Municipalities

Canadian Manufacturers Association

Canadian Underwriters' Association

Central Mortgage and Housing Corporation

Engineering Institute of Canada

National House Builders Association

Royal Architectural Institute of Canada

LIST OF PARTS AND SECTIONS OF THE NATIONAL BUILDING CODE 1960

Part 1 Administration

Part 2 Definitions

Part 3 Use and Occupancy

Part 4 Design

Section 4.1

Structural Loads and Procedures

Section 4.2

Foundations

Section 4.3 Wood

Section 4.4

Unit Masonry

Section 4.5 Plain, Reinforced and Prestressed

Concrete

Section 4.6 Steel Construction

Section 4.7 Cladding

Part 5 Materials

Part 6 Building Services

Part 7 Plumbing Services

Part 8 Construction Safety Measures

Part 9 Housing

)

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(3)

• NATIONAL BUILDING CODE OF CANADA 1960

PART 1 ADMINISTRATION

ODE 1960

• Section

1.1 Short Title

...

3

~d

Section

1.2 Application

...

• • • • • • • • • • • • • • • • • • ~ • • • • • • • • • ~ • • • • • • • • • • • • • • « • • •

3 Section

1.3 Responsibility of the Owner

...

3 Section

1.4 Prohibition

...

3 Section

1.5 Permits

...

4 Section

1.6 Duties of the Owner

... , .... ...

4 Section

1.7 Documents on the Site

...

5

• Section

1.8 Penalties

...

5 Section

1.9 Duties of the Authority Having Jurisdiction

....

5 Section

1.10 Powers of the Authority Having Jurisdiction

....

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(4)

.'

• BYLAW NUMBER ... .

tWHEREAS The ... Ad provides

that a Municipal Council may by Bylaw regulate the erection and

pro-vide for the safety of buildings.

THEREFORE the Municipal Council of the Corporation of the

. ... . ... of ... enacts as follows:

PART 1 ADMINISTRATION

SECTION 1.1 SHORT TITLE

1.1.1.

This Bylaw may be cited as the Building Bylaw.

SECTION 1.2 APPLICATION

1.2.1.

Parts 2 to 8 inclusive of this Bylaw apply to all buildingsO _{other than}

those provided for in Part 9.

1.2.2.

Part 9 applies to houses.

1.2.3.

Where

(a) a building is built, this Bylaw applies to the design and construction of

the building;

(b) the whole or any part of a building is moved, this Bylaw applies to all

parts of the building whether moved or not;

(c) the whole or any part of a building is wrecked, this Bylaw applies to

any remaining part and to the work involv~d in the wrecking;

(d) a building is altered, this Bylaw applies to the whole buildmg except that

the Bylaw applies only to part if that part is completely self-contained with respect to the facilities and safety measures required by this Bylaw; (e) the occupancy of a buildmg is changed, this Bylaw applies to all parts

of the building affected by the change.

SECTION 1.3 RESPONSmlLITY OF THE OWNER

1.3.1.

Subject to the provisions of subsections 1.5.3. and 1.5.4., neither the

granting of a permit nor the approval of the drawings and specifications, nor

inspections made by the authority having jurtsdiction during erection of the building shall in any way relieve the owner of such building from full

respon-sibility for carrying out the work in accordance with the requirements of this Bylaw.

SECTION 1.4 PROHmlTlON

1.4.1.

No person shall commence or continue any of the work referred to in

Section 1.2 unless the owner of the building to be constructed, or in respect of

which the work is to be carried out, has obtained a building permit.

1.4.2.

No person shall commence or continue any part of the work referred to in

Section 1.2., for which part a permit is required by this Bylaw, unless he has

obtained a permit to carry out that part of the work.

1.4.3.

No person shall commence or continue any part of the work referred to in

Section 1.2 in respect of which a permit is required under any other Bylaw

un-less he has obtained a permit under that Bylaw.

t

This preamble relates the Bylaw to enabling legislation and should be ad-justed to conform to the powers delegated to the Municipality .

°

Italicized words are defined in Part 2.

PART 1 ADMINISTRATION

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SECTION 1.5 PERMITS

1.5.1. Subject to subsections 1.5.2. and 1.5.4. and clause 1.l0.1.(d), where

(a) an application has been made, and

(b) the proposed work set out in the application conforms with this Bylaw and all other applicable Bylaws,

the authority having jurisdiction shall issue the permit for which the application

is made.

1.5.2. Every permit is issued upon

(a) the condition that construction is to be started within 6 months from the date of issuing of the permit;

(b) the condition that construction is not to be discontinued or suspended for a period of more than one year; and

(c) such other condition as the authority having jurisdiction may deem

ad-visable.

1.5.3. The authority having jurisdiction shall refer to the Council plans and

specifications for any building or structure that is not provided for in this

Bylaw and for which an application for a building permit has been received.

1.5.4. No permit shall be issued for a building or structure referred to in

sub-section 1.5.3. without the prior approval of the Council.

1.5.5. The application referred to in subsection 1.5.1. shall

(a) be made in the form prescribed by the authority having jurisdiction;

(b) be signed by the applicant;

(c) state the intended use of the building;

(d) include copies in duplicate of the specifications and scale drawings of

the building with respect to which the work is to be carried out showing

(i) the dimensions of the building,

(ii) the proposed use of each room or floor area,

(iii) the dimensions of the land on which the building is, or is to be

situated,

(iv) the grades of the streets and sewers abutting the land referred to in subclause (iii), and

(v) the position, height and horizontal dimensions of all buildings on the

land referred to in subclause (iii); and

(e) contain any other information required by this Bylaw or by the authority having jurisdiction.

1.5.6. The authority having jurisdiction may revoke or recommend to Council

the revocation of a permit where there is a violation of

(a) any condition under which the permit was issued, or

(b) any provision of this Bylaw.

SECTION 1.6 DUTIES OF THE OWNER

1.6.1. Every owner of property shall

(a) permit the authority having jurisdiction to enter any building or premises

at any reasonable time for the purpose of administering or enforcing this Bylaw;

(b) obtain, where applicable, from the appropriate authority, permits

relat-ing to building, zoning, grades, sewers, water mains, plumbing, signs,

blasting, street occupancy, electricity, highways, and all other permits

required in connection with the proposed work;

(c) give at least 48 hours' notice to the authority having jurisdiction of the

intention to start work on the building site;

NATIONAL BUILDING CODE OF CANADA. 1960

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(6)

,

where s Bylaw plication trom the Ispended eem ad-ans and in this 'eceived. in sub-,tion; .vings of showing is to be ed to in r on the JUthority Council premises 'llforcing its relat-!t, signs, permits rJ, of the

.1

.

)

(d) give notice to the authority having jurisdiction

(i) where a foundation wall below land surface has been placed and before any backfilling of the excavation has been carried out,

(ii) U

(iii) as may otherwise be required by this Bylaw,

(e) give written notice to the authority having jurisdiction within 30 days

of completion of the work described in the permit, and

(f) obtain an occupancy permit°u _{from the}_{authority having iurisdiction}

prior to any

(i) occupancy of a bUilding or part thereof after construction, wrecking

or alteration of that building or part, or

(ii) change in the class of occupancy of any building or part thereof.

1.6.2. Where tests of any materials are made to ensure conformity with the

re-quirements of this Bylaw, records of the test data shall be kept available for inspection during the construction of the building and for such a period

there-after as required by the authority having jurisdiction.

SECTION 1.7 DOCUMENTS ON mE SITE

1.7.1. The person to whom a permit is issued shall, during construction, keep

(a) posted in a conspicuous place on the property in respect of which the

permit was issued a copy of the building permit or a poster or placard

in lieu thereof; and

(b) a copy of the approved drawings and specifications referred to in clause

1.5.5.( d) on the property in respect of which the permit was issued.

SECTION 1.8 PENALTIES

1.8.1. Any person who contravenes any prOVlSlon of this Bylaw is guilty of an

offence and is liable, on summary conviction to . . . . 0000 •

SECTION 1.9 DUTIES OF mE AUmORITY HAVING JURISDICTION

1.9.1. The authority having iurisdiction shall

(a) administer this Bylaw; and

(b) keep proper records of all applications received, permits and orders

issued, inspections and tests made, and shall retain copies of all papers and documents connected with the administration of his duties.

SECTION 1.10 POWERS OF THE AUmORITY HAVING JURISDICTION

1.10.1. The authority having jurisdiction may

(a) enter any building or premises at any reasonable time for the purpose of

administering or enforcing this Bylaw; ,

(b) cause a written notice to be delivered to the owner of any property

direct-ing him to correct any condition where, in the opinion of the authority having iurisdiction, that condition constitutes a violation of this Bylaw;

(c) direct that tests of materials, deviQes, construction methods, structural assemblies or foundation conditions be made, or sufficient evidence or proof be submitted, at "the expense of the owner, where such evidence

or proof is necessary to determine whether the material, device, con-struction or foundation eondition meets the requirements of this Bylaw; (d) revoke (or recommend to Council the revocation of) or refuse to issue

a permit where in his opinion the results of the tests referred to in

clause (c) are not satisfactory.

00 Here each municipality or authOrity will insert the requirements for any

additional notification as necessary.

000 To apply only to those municipalities which require this permit.

ooooThe Municipality can insert a penalty clause.

PART 1 ADMINISTRATION'

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(7)

•

• TABLE OF CLIMATIC DATA FOR THE

MUNICIPALITY OF _ _ _ _ _ _

_

1. Winter Design Temperature

2% Per Cent Basis (Deg F)

2. Winter Design Temperature

1 Per Cent Basis (Deg F)

3. Annual Total Degree-days

Below 65°F ... .

4. Maximum Fifteen-minute

Rainfall (in.) ... .

5. Maximum Twenty-four-hour

Rainfall (in.) ... .

6. Annual Total Precipitation

(in.) ... .

7. Maximum Snow Load,

Hori-zontal Roof Surface (lb per

sq ft) ... .

8. Maximum Wind Load

(lb per sq ft) ... .

9. Earthquake Zone Factor

..

Apply to Code

Requirement

6.3.1.8

6.3.1.8. 7.5.11.5 and .6

4.1.2.14(1)

4.1.2.8(1)

4.1.2.12(1)

4.1.2.15 (2)

The above table has been provided for recording the values of major climate factors that affect building for each municipality using the Code. These factors may be obtained for any municipality by writing to the Secretary, Associate Committee on the National Building Code, c/o the National Research Council, Ottawa, Canada.

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(8)

• NATIONAL RESEARCH COUNCn.

ASSOCIATE COMMITTEE ON mE NATIONAL BUILDING CODE

1960-1961

R. F. Legget (Chairman) E. A. Allcut L. R. Andrews D. C. Beam C. N. Blankstein A. E. Bridges A. J. Cameron J. P. Carriere S. D. C. Chutter J. Connolly R. Duschenes R. S. Ferguson J. H. Jenkins * Died April 1961 S. D. Lash

*

F. Lasserre W. M. McCance G. S. Mooney J. H. Palmason R. B. Rolland P. S. Secord A. Tubby

A. E. Berry (ex officio) R. E. Bolton (ex officio) C. D. Carruthers (ex officio) C. A. Thomson (ex officio) J. M. Robertson (Secretary)

Revision Committee on Administration

T. J. Plunkett (Chairman)

G. Adams S. G. Frost

G. A. Holland

P. L. Soper (ex officio)

J. M. Robertson (Secretary)

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This advisory document has developed from the original National Building Code issued in 1941 jointly by the National Research Council and the Department of Finance. A completely revised edition was published in 1953. This is therefore the Third Edition.

The Associate Committee on the National Building Code consists of a group of about twenty-four Canadian citizens appointed for three-year terms by the Council. They sit as individuals and not as representatives of any organization. The major task of the Committee is to promote the uniformity of building regulations throughout Canada. Continued study and improvement to maintain the National Building Code as a satisfactory document containing regulations which can be conveniently adopted or enacted for local use will always be an im-portant part of the Committee's work.

The Associate Committee is generally representative of all major phases of building in Canada. Its direct responsibility for the preparation and publication of the Code ensures the independence of this document. The staff of the Council are responsible only for the necessary technical and sec:etarial work, all of which is done to the direction of the Associate Committee. This work is dane within the Division of Building Research, to which are referred the many research problems that the use and revision of the Code are continually revealing. In this way, the most up-to-date information is made available for the use of the Committee.

The actual work of preparing new parts of the Code and of revising existing parts is delegated by the Associate Committee to special revision committees. Engineers, architects, building officials, and other technical experts sit upon these committees in order that the resulting documents may represent contemporary practice in Canada, interpreted as necessary to frame the minimum regulations of which the Code consists. These committees always issue drafts of the new documents which they prepare. These are sent for comment to those who express interest in them. Three Advisory Groups, on Fire, Health and Structure, each with representative memberships, keep the technical content of the Code under review, between revisions, and advise the Associate Committee on technical problems.

Comments on the use of the Code and suggestions for its improvement will be welcome and may be sent to the Secretary, Associate Committee on the National Building Code, in care of the National Research Council, Ottawa. If those who use this document will thus co-operate with those who have worked toward its preparation and revision, the true national character of the Code will be maintained and strengthened and its development as a satisfactory set of desirable building regulations for use by municipalities and other agencies throughout Canada should steadily progress.

Ce document, ainsi que toutes les autres sections du Code National du Botiment, sera

disponible en fran~ais d'ici quelque temps. Toutes demandes doivent etre adressees au

Secretaire, Comite Associe sur Ie Code National du Botiment, Conseil National de Recherches, Ottawa, Canada.

First Edition - 1941; Second Edition - 1953; Third Edition - 1960.

The National Building Code and its various parts or sections may be obtained by writing to: The Secretary,

Associate Committee on the National Building Code, National Research Council,

Ottawa 2, Canada.

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PART 2 DEFINITIONS

The National Building Code is published by the National Research

Council as an advisory document for use throughout Canada. It is

advisory only and has no legal standing until and unless adopted

or enacted

for

specific use by a provincial government or

muni-cipal administration. The Code is essentially a

set

of

minimum

regulations respecting the safety of buildings with reference

to

public health, fire protection and structural sufficiency. It is not

and is not intended to be a text-book of building design, advice

upon which should be sought from professional sources. The Code

relates to buildings and simple structures but it is not intended for

use with specialized civil engineering structures.

Its essential

purpose is the promotion of public safety through the use of

desirable building standards throughout Canada.

Third Printing

including all Corrections and Revisions

to July 1963

Issued by the ASSOCIATE COMMITTEE ON THE NATIONAL BUILDING CODE

NATIONAL RESEARCH COUNCIL

OTTAWA, CANADA

AAM.I

NRC No.

5CNU-D

Printed in Canada

Price: 30 cent.

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(11)

• Association

of

Canadian Fire Manhals

Association of Consulting Engineers

of

Canada

Canadian Association

of

Fire Chiefs

Canadianlabovr Congress

Canadian Construdion Association

Canadian Federation

of Mayors

and Municipalities

Canadian Manufacturers Association

Cana.dian Underwriten' Association

Central Mortgage and Housing Corporation

Engineering Institute of Canada

National House Builden Association

Royal Architedural Institute

of

Canada

Pm

1 Administration

Pm 2

DefInitions

Part 3 Use

and Occupancy

Pm

4 Design

Section

4.1 Strudural

Loads

.nd

Procedures

Section

4.2 Founct.tiona

Section

4.3 Wood

Section.

4.4 Unit

Masonry

Section

4.5 Plain, Reinforced and

Preltreaed

Concrete

Section

4.6 Steel Construction

Section

4.7 Cladding

Pm

5 Materials

Part

6 Building Services

Part

7 Plumbing Services

'.rt

8 ~."&JrMMsures

Part 9 Housing

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(12)

PART 2 DEFINITIONS

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PART 2 DEFINITIONS

Definitions of Words and Phrases

Access to exits see means of egress

Admixture defined in Section 4.5

Aggregate defined in Section 4.5

Air-entraining admixture - defined in Section 4.5 Air gap - defined in Part 7

Air washer defined in Part 6

Alteration with reference to a bUilding means a change from one maior

occupancy class or division to another, or a structural change such as an

addition to the area or height, or the removal of part of a building,

or any change to the structure such as the construction of, cutting into or removal of any wall, partition, column, beam, joist, floor or other

support, or a change to or closing of any required means of egress or a

change to the fixtures, equipment, cladding or trim where they are

regulated by this Bylaw

Apartment house defined in Part 3

Approved - means approved by the authority having iurisdiction

Assembly occupancy defined in Part 3

Attic defined in Part 9

Authority having iurisdiction means the Municipal Council or, with respect

to the regulation of buildings, the building inspector; with respect to the

regulation of plumbing installations, the plumbing inspector; where the term <appropriate authority having jurisdiction' is used, it means the responsible provincial officials with legal authority for controlling heating units: provincial fire marshals, gas inspectors, officers of provincial de-partments of labour, etc., in consultation with municipal building inspectors

Back-siphonage preventer - defined in Part 7

Basement means that portion of a building between two floor levels which

is partly underground but which has at least one half of its height from finished floor to finished ceiling above adjacent finished grade as

approved

Bearing support (as applying to masonry) defined in Section 4.4

Bearing surface (for soils) - defined in Section 4.2

Botler defined in Part 6

Branch - defined in Part 7 Branch vent - defined in Part 7 Breeching - defined in Part 6

Building - means any structure used or intended for supporting or sheltering

any use or occupancy as set forth in this Bylaw

Building assembly - (for cladding purposes) - defined in Section 4.7 Building drain - defined in Part 7

Building sewer - defined in Part 7

Building trap defined in Part 7

Business and personal serdces occupancy defined in Part 3

Butt joint - defined in Section 4.3 Cavity wall- defined in Section 4.4

Cellar - means that portion of a building between two floor levels which is

partly or wholly underground and which has more than one half of its height, from finished floor to finished ceiling, below adjacent finished grade as approved

NATIONAL BUILDING CODE OF CANADA 1960

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major h as an uilding, ng into 'r other ~ss or a ley are respect : to the ere the ms the heating ~ial de-milding which lt from ade as ~ltering :lich is of its inished

•

Cement defined in Section 4.5

Chimney defined in Part 6

Chimney connector - defined in Part 6

Chimney flue - defined in Part 6

Chimney liner defined in Part 6

Circuit vent - defined in Part 7

Cladding defined in Section 4.7

Clear water waste - defined in Part 7

Closed type heating system - defined in Part 6

Closure means the complete assembly of a fire door or doors, or shutters

and equipment, including hardware, closing devices, frame and anchors

Coarse aggregate - defined in Section 4.5 Column, simple - defined in Section 4.3 Column, spaced - defined in Section 4.3 Combination column - defined in Section 4.5

Combined building drain defined in Part 7

Combined building sewer - defined in Part 7

Combined sewer - defined in Part 7

Combustible - as pertaining to materials adjacent to, or in contact with, heat

producing units, venting equipment, pipes and ducts - defined in Part 6 (see also noncombustible)

Combustible dusts - defined in Part 3

Combustible fibres and sheets - defined in Part 3

Commercial and industrial occupancy - defined in Part 3

Composite column - defined in Section 4.5 Concrete - defined in Section 4.5

Concrete chimney see chimney, Part 6

Connector, timber - defined in Section 4.3

Consistency - (as applying to concrete) - defined in Section 4.5 Continuous vent - defined in Part 7

Critical level - (as applying to plumbing fixtures) - defined in Part 7 Curtain wall- defined in Section 4.4

Damp-proof - defined in Section 4.7

Deformed bar defined in Section 4.5

Density (as applying to wood) - defined in Section 4.3 Depth (as applying to wood) - defined in Section 4.3 Design capacity (of foundations) - defined in Section 4.2 Design properties (of soil or rock) - defined in Section 4.2 Diameter (of pipes, fittings, etc.) - defined in Part 7

Directly connected (as applying to plumbing) - defined in Part 7

Drainage system defined in Part 7

Dual vent - defined in Part 7

DweUing unit - means two or more rooms used or intended for the domestic

use of one or more individuals living as a single housekeeping unit, with cooking, living, sleeping and sanitary facilities

Edge distance (as applying to timber construction) - defined in Section 4.3 Effective area of concrete - defined in Section 4.5

Effective area of reinforcement - defined in Section 4.5 Effective opening (as applying to plumbing) - defined in Part 7

End distance (as applying to timber construction) - defined in Section 4.3 Exhaust duct - defined in Part 6

PART 2 DEFINITIONS

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Exit - see means of egress

Exit, access to - see means of egress Exit, horizontal - see means of egress Factory-built chimney - see chimney, Part 6

Factory-built fireplace defined in Part 6

Fibre saturation point defined in Section 4.3

Fine aggregate - defined in Section 4.5

Fire escape - defined in Part 3

Fire load see load, fire

Fire resistance rating - defined in Part 3

Fire resistive construction defined in Part 3

Fire separation - defined in Part 3

Fire wall defined in Part 3

Fixture (as applying to plumbing) - defined in Part 7 Fixture drain - defined in Part 7

Fixture outlet pipe - defined in Part 7 Fixture unH - defined in Part 7 Flame spread rating - defined in Part 3 Flammable - defined in Part 3

Flood level rim (as applying to plumbing) - defined in Part 7

Floor area - means an area of any floor or story of a building which is occupied,

or intended for occupancy; floor areas shall not be considered as

exclud-ing exits, or attic, crawl or duct spaces except as permitted in this Bylaw

Flue defined in Part 6

Flue outlet - defined in Part 6 Flue pipe - defined in Part 6

Forced warm-air furnace defined in Part 6

Foundation - defined in Section 4.2 Foundation-unit - defined in Section 4.2 Frame construction - defined in Section 4.3

Fresh air inlet (as applying to plumbing) - defined in Part 7

Frost-proof closet defined in Part 7

Furnace see warm-air furnace

Garage, private - defined in Part 3 Garage, repair - defined in Part 3 Garage, storage - defined in Part 3

Gas vent defined in Part 6

Glue (as applying to wood) - defined in Section 4.3 Glued-laminated timber (Glulam) - defined in Section 4.3

Grade (as applying to wood) defined in Section 4.3

Gravity warm-air furnace - defined in Part 6 Habitable room - defined in Part 9

Hazardous substance - defined in Part 3

Header (as applying to plumbing) defined in Part 7

Heat exchanger defined in Part 6

H eat producing unit - defined in Part 6 Heating appliance - defined in Part 6 Heavy timber construction - defined in Part 3

Height (as applying to masonry) defined in Section 4.4

High occupant load - see load, high occupant Hollow unit - defined in Section 4.4 Hotel or motel - defined in Part 3

NA.TIONAL BUILDING CODE OF CANADA, 1960

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ccupied, exclud-s Bylaw

•

1 I

House defined in Part 9

House, lodging - defined in Part 3

Indirectly connected (as applying to plumbing) - defined in Part 7

Individual vent (as applying to plumbing) - defined in Part 7

Infirm persons - defined in Part 3

Institutional OCCU1Jancy defined in Part 3

Interceptor (as applying to plumbing) - defined in Part 7

Interior finish material defined in Part 3

Joist - defined in Section 4.3

Laminations (as applying to wood) - defined in Section 4.3

Lateral support (as applying to masonry) - defined in Section 4.4

Leader - defined in Parl 7

Lightweight aggregate - defined in Section 4.5

Liner - see chimney liner

Load bearing (for purposes of determining fire protection) - defined in Part 3 Load duration - defined in Section 4.3

Load, fire - defined in Part 3

Load, high occupant defined in Part 3

Load, occupant - see occupant load

Load sharing system (as applying to timber construction) defined in Section 4.3

Loop vent - defined in Part 7

Lumber, nominal size defined in Section 4.3

Lumber, rough - defined in Section 4.3 Lumber, sawn - defined in Section 4.3

Lumber, structurally graded defined in Section 4.3

Lumber, yard - defined in Section 4.3 Main vent - defined in Part 7

Masonry - defined in Section 4.4

Masonry or concrete chimney - see chimney, Part 6 Masonry chimney - see chimney, Part 6

Means of egress - means a doorway, hallway, corridor, lobby, stair, ramp or

other facility or combination thereof provided for the escape of persons from a building, floor area or room to a public thoroughfare or other approved open space; means of egress include exits and access to exits Exit - means that part of a means of egress which leads from the floor area

it serves, including any doorway leading directly from a floor area, a

public thoroughfare or an approved open space

Exit, access to - means that part of a means of egress within a floor area which

provides access to an exit serving the floor area

Exit, horizontal means the connection by a bridge, balcony, vestibule or

doorway of two floor areas at substantially the same level; such floor areas being located either in different buildings or located in the same building and fully separated from each other

Mercantile occupancy - defined in Part 3 Metal chimney - see chimney, part 6

Moisture content (as applying ~o wood) - defined in Section 4.3

Motel see hotel

Nominally horizontal (as applying to plumbing) - defined in Part 7 Nominally vertical (as applying to plumbing) - defined in Part 7

Noncombustible (as applying to materials in building generally) - defined in

Part 3

Noncombustible (as applying to materials adjacent to heating equipment) -

de-fined in Part 6

Noncombustible construction - defined in Part 3

PART 2 DEFINITIONS

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Occupancy - means the use or intended use of a building or structure or part

thereof for the shelter or support of persons, animals or property

Occupancy, maior - means the principal occupancy for which a building or

part of a building is used or intended to be used; for the purposes of

the classification of buildings according to occupancy, a maior occupancy

shall be deemed to include the subsidiary occupancies which are

con-tingent upon it

Occupant load - defined in Part 3

Offset (as applying to plumbing) - defined in Part 7

Opening, vertical - means an opening in a floor between stories of a building

or in a ceiling between a story and an attic space. It shall include openings for stairs, elevators, air wells and dumbwaiters, but shall not generally include openings for pipes, heating or ventilating ducts or electrical conduits

Owner - means any person, firm, corporation or agent controlling the property

under consideration

Panel wall- defined in Section 4.4

Partition - means an interior non-loadbearing wall one story or part-story in

height

Pedestal (as applying to concrete) - defined in Section 4.5

Perfmeter heating system defined in Part 6

Permit - means a permission or authorization in writing by the authority having jurisdiction to perform work regulated by this Bylaw and in the case of

an occupancy permit to occupy any building or part of a building

Pier - defined in Section 4.4

Pilaster defined in Section 4.4

Plain bar defined in Section 4.5

Plain concrete defined in Section 4.5

Plenum - defined in Part 6

Plumbing contractor defined in Part 7

Plumbing system defined in Part 7

Ply (as applying to wood) - defined in Section 4.3 Plywood - defined in Section 4.3

Pole construction - defined in Section 4.3

Potable water defined in Part 7

Precast concrete - defined in Section 4.5

Preservative treatment (wood) - defined in Section 4.3

Prestressed concrete defined in Section 4.5

Private sewage disposal system - defined in Part 7

Proportions (as applying to concrete) - defined in Section 4.5

Pyroxylin plastic - defined in Part 3

Range (as applying to heating) - defined in Part 6

Reinforced concrete - defined in Section 4.5

Relief vent defined in Part 7

Residence type (as applying to heating and ventilating equipment) - defined in

Part 6

Residential occupancy - defined in Part 3

Return duct - defined in Part 6 Rolling shear - defined in Section 4.3

Room heater see space heater

Sanitary building drain - defined in Part 7 Sanitary building sewer - defined in Part 7 Sanitary drainage system - defined in Part 7 Sanitary sewer - defined in Part 7

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or part 'ding or poses of cupancy ue con-building include :hall not lucts or property story in II having case of ng ~fined in

•

Scarf - defined in Section 4.3 Scarf ioint'- defined in Section 4.3

Sealed combustion system appliance defined in Part 3

Sedimentary defined in Section 4.2

Separation, fire - defined in Part 3

Service conditian (wood, dry and wet) - defined in Section 4.3 Sewage - defined in Part 7

Sheathing (as applying to wood) - defined in Section 4.3 Shrinkage (as applying to wood) - defined in Section 4.3 Size (as applying to pipes, fittings, etc.) - defined in Part 7 Slenderness ratio - defined in Section 4.3

Smokestack - see chimney, Part 6 Soil-or-waste pipe - defined in Part 7

Soil-or-waste stack defined in Part 7

Solid masonry - defined in Section 4.4 Solid unit - defined in Section 4.4 Space heater - defined in Part 6

Sprinklered defined in Part 3

Stack vent defined in Part 7

Stage - defined in Part 3

Stiffener (as applying to wood) defined in Section 4.3

Story (as applying to the height of a plumbing stack) defined in Part 7

Story means that portion of any building which is situated between the top

of any floor and the top of the floor next above it; and if there is no floor above it, that portion between the top of such floor and the ceiling above it

Story, first means the story with its floor closest to grade and having its

ceiling more than 6 ft above grade

Story, second - means the story located immediately above the first story

Storm building drain defined in Part 7

Storm building sewer - defined in Part 7 Storm drainage system - defined in Part 7 Storm sewer - defined in Part 7

Storm water defined in Part 7

Stove - defined in Part 6

Strength test (for concrete) - defined in Section 4.5 Stressed skin - defined in Section 4.3

Stud defined in Section 4.3

Subsoil drainage pipe - defined in Part 7

Sump defined in Part 7

Supply duct defined in Part 6

Trap - defined in Part 7 Trap, building - see building trap

Trap dip defined in Part 7

Trap seal - defined in Part 7 Trap weir - defined in Part 7 Unit heater - defined in Part 6

Vapour barrier defined in Section 4.7

Veneer - defined in Section 4.4 Vent connector - defined in Part 6

Vent pipe (as applying to plumbing) - defined in Part 7

PART 2 DEFINITIONS

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Vent stack - defined in Part 7

Venting (as applying to heating and ventilating equipment) defined in Part 6

Venting system (as applying to plumbing) - defined in Part 7

Wall, fire see fire wall

Warm-air furnace defined in Part 6

Water:cement ratio defined in Section 4.5

Water heater - defined in Part 6 Water-proof - defined in Section 4.7 Water service pipe - defined in Part 7

Water system (as applying to plumbing) - defined in Part 7

Wet vent defined in Part 7

Wood preservative - see preservative, Section 4.3 Wythe - defined in Section 4.4

Yoke vent - defined in Part 7

NATIONAL BUILDING CODE OF CANADA, 1960

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[l Part 6

•

• NATIONAL RBSBABCII COUNCIL

ASSOCIATE COIfMI'I'TBE ON THE NATIONAL BUILDING CODE

1861-1111

R. F. legget

(Chairman)

E. A. Allcut

L.

R. Andrews

D. C.

Beam

C. N. Blankstein

A. E. Bridges-A.

J.

Cameron

J. P. Carriere

S. D. C. Chutter

J. Connolly

R. Duschenes

R. S.

ferguson

J.

H.

JenkiM

• Died April 1961

S. D. lash

• .F.

Lasserre

W. M. McCance

G. S.

Mooney

J.

H. PaimalOn

R.B. Rolland

P. S.

Secord

A. Tubby

A.

E~ lerry (ex

officio)

R. E.

Bolton (ex

officio)

C. D. Carruthen

(ex

officio)

C. A.

Thomson (ex

officio)

J.

M. Robertson

(Secretary)

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in 1941 jointly by the National Research Council and the Department of Finance. A completely revised edition was published in 1953. This is therefore the Third Edition.

The Associate Committee on the National Building Code consists of a group of about twenty-four Canadian citizens appointed fo!" three-year terms by the Council. They sit as individuals and not as representatives of any organization. The major task of the Committee is to promote the uniformity of building regulations throughout Canada. Continued study and improvement to maintain the National Building Code as a satisfactory document containing regulations which can be conveniently adopted or enacted for local use will always be an im-portant part of the Committee's work.

The Associate Committee is generally r~presentative of all major phases of building in

Canada. Its direct responsibility for the preparation and publication of the Code ensures the independence of this document. The staff of. the Council are responsible only for the necessary technical and secretarial work, all of which is done to the direction of the Associate Committee. This work is done within the Division of Building Research, to which are referred the many research problems that the use and revision of the Code are continually revealing. In this way, the most up-to-date information is made available for the use of the Committee.

The actual work of preparing new parts of the Code and of revising existing parts is delegated by the Associate Committee to special revision committees. 'Engineers, architects, building officials, and other technical experts sit upon these committees in order that the

re5ultin,.g. d~uf11~nt5,~ay .repreJ8nt. contempo~Qry practice i!,! Ca?adq, interprete~ QS. nec;essary,

,,:~' h,",·,"'.:~~~·,QJ,whJdI,(,b8.

cOcht'"

~

...

r.;'T,,*·~i"':~Y.'·,"''''

drafts of the ~ew documents which they prepare. These are sent for co~ment to those who

express interest in them. Three Advisory Groups, on Fire, Health and Structure, each with representative memberships, keep the technical content of the Code under review, between revisions, and advise the Associate Committee on technical problems.

Comments on the use of the Code and suggestions for its improvement will be welcome and may be sent to the Secretary, Associate Committee on the National Building Code, in care of the National Research Council, Ottawa. If those who use this document will thus co-operate with those who have worked toward its preparation and revision, the true national character of the Code will be maintained and strengthened and its development as a satisfactory set of desirable building regulations for use by municipalities and other agencies throughout Canada should steadily progress.

Ce document, ainsi que toutes les autres sections du Code National du Batiment, sera

disponible en fran~ais d'ici quelque temps. Toutes demandes doivent etre adressees au

Secretaire, Comite Associe sur Ie Code National du BOtiment, Conseil National de Recherches, Ottawa, Canada.

First Edition - 1941; Second Edition - 1953; Third Edition - 1960.

The National Building Code and its various parts or sections may be obtained by writing to:

The Secretary,

Associate Committee on the National Building Code,

NatIonal

RlMeGl'ch

Cou~1"

Ottawa

2','

Canad~.

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PART 3 USE

AND OCCUPANCY

The National Building Code is published by the National Research

Council as an advisory document for use throughout Canada. It is

advisory only and has no legal standing until and unless adopted

or enacted for specific use by a provincial government or

muni-cipal administration. The Code is essentially a set of minimum

regulations respecting the safety of buildings with reference to

public health, fire protection and structural sufficiency. It is not

and is not intended to be a text-book of building design, advice

upon which should be sought from professional sources. The Code

relates to buildings and simple structures but it is not intended for

use with specialized civil engineering structures. Its essential

purpose is the promotion of public safety through the use

of

desirable building standards throughout Canada.

Third Printing

including all Corrections and Revisions

to

July

1963

Issued by the ASSOCIATE COMMITTEE ON THE NATIONAL BUILDING CODE

NATIONAL RESEARCH COUNCIL

OTTAWA, CANADA

NRC No. 5800c . ;

Printed in Canada

Price: 30 cents

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LIST

Association of Canadian Fire Marshals

Association of Consulting Engineers of Canada

Canadian Association of Fire Chiefs

Canadian Labour Congress

Canadian Construction Association

Canadian Federation of Mayors and Municipalities

Canadian Manufacturers Association

Canadian Underwriters' Association

Central Mortgage and Housing Corporation

Engineering Institute of Canada

National House Builders Association

Royal Architectural Institute of Canada

OF PARTS AND SECTIONS OF THE NATIONAL BUILDING CODE

Part

Administration

Part

2 Definitions

Part

3 Use and Occupancy

Part

4 Design

Section

4.1 Structural Loads and Procedures

Section

4.2 Fou ndations

Section

4.3 Wood

Section

4.4 U nit Masonry

Section

4.5 Plain, Reinforced and Prestressed

Concrete

Section

4.6 Steel Construction

Section

4.7 Cladding

Part

5 Materials

Part

6 Building Services

Part

7 Plumbing Services

Part

8

Construction Safety Measures

Part 9 Housing

1960

)

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s:

,

•

PART 3 )

USE AND OCCUPANCY

CODE 1960 •

Section

3.1 Interpretation... ...

3 Section

3.2 Regulations Applying to Buildings ... 16

Section

3.3 Requirements for Fire Safety within

Floor Areas ... . .. ....

. . . .. .. . . .. . 49

Section

3.4 Requirements for Exits ...

55 Sedion

3.5 Attic, Duct and Crawl Spaces ...

65 Section

3.6 Health Requirements ...

66 Copyright

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•

PART 3 USE AND OCCUPANCY

SECTION 3.1 INTERPRETATION SUBSECTION 3.1.1. DEFINITIONS

3.1.1.1. In Part 3

Apartment house

means a type of multiple dwelling for the purpose of

pro-viding 3 or more separate dwelling unitsO with shared entrances and other

essential facilities and services. (This includes what is sometimes termed a triplex.)

Assembly occupancy

means the occupancy or use of a building or structure

or any portion thereof by a gathering of persons for civic, political, travel, religious, social, educational or recreational purposes.

Business and personal services

occupancy means the occupancy or use of a

building or structute or any portion thereof for the transaction of business,

or the rendering or receiving of professional and personal services.

Closure

means the complete assembly of a fire door or doors, or shutters

and equipment, including hardware, closing devices, frame and anchors.

Combustible dusts

means dusts and particles that are readily ignitable

and which when suitably dispersed create an explosive atmosphere, includ-ing among others those resultinclud-ing from the handlinclud-ing or processinclud-ing of grain, malt, and the manufacturing of flour and feed.

Combustible fibres and sheets

means finely divided combustible vegetable

or animal fibres and thin sheets or flakes of such materials involving a flash fire hazard, including among others, cotton, hemp, sisal, jute, kapok, paper, and cloth in the form of scraps and clippings.

Commercial and industrial occupancy

means the occupancy or use of a

building for assembling, fabricating, manufacturing, processing and storing

of goods and materials.

Exit

means that part of a means of egress which leads from the floor area

it serves, including any doorway leading directly from a floor area to

another floor area, a public thoroughfare or an approved open space.

Exit, access to

means that part of a means of egress within a floor area

which provides access to an exit serving the floor area.

Exit, horizontal

means the connection by a bridge, balcony, vestibule, or

doorway of two floor areas at substantially the same level; such floor areas

being located either in different buildings or located in the same building

and fully separated from each other by a fire separatwn.

Fire escape

means an emergency means of egress conforming with article

3.4.3.15.

Fire resistance rating

(see article 3.1.3.1.)

Fire-resistive construction

Fire separation

Fire wall

(see article 3.1.3.7)

Flame spread rating

Flammable,

when applied to volatile liquids, means a liquid that has a flash

point not greater than 200 deg F when tested in accordance with ASTM Standards D56-56 and D93-58 and a vapour pressure not exceeding 40 lb/sq in. at 100 deg F.

Floor area

means an area on any floor or story of a building which is

oc-cupied, or intended for occupancy. Floor areas shall not be considered as

including exits, or attic, crawl, or duct spaces except as permitted in this

Bylaw.

Garage, private

means a building or part used or intended for the storage

of four or less passenger motor vehicles and in which there are no facilities for repairing or servicing such vehicles.

Garage, repair

means any building where facilities are provided for

repair-ing and servicrepair-ing of motor vehicles .

• Words that Jl,re in italics in this Part are defined in Part 2: Definitions.

PART 3 USE AND OCCUPANCY

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Garage

J

storage

means a building, other than a private garage, used or in-tended for the storage of automobiles and which contains no provision for the repair or servicing of such motor vehicles.

Hazardous substance

means a substance which, because of its physical or

chemical nature or because of the form in which it exists, may explode or become ignited easily and cause intense fires.

Heavy timber construction

Hotel or motel

means a building or part thereof wherein accommodation

without private cooking facilities is provided for transient lodgers, and having a public dining room or cafe.

House, lodging

means any building or part thereof other than a hotel or

motel wherein lodging without cooking facilities is provided for compen-sation pursuant to previous arrangement and not necessarily to anyone who may apply; but shall not include a single dwelling unit within which

not more than four sleeping rooms are provided for compensation.

Infirm persons

includes all persons under the age of six and all other

per-sons whose age or health is such that they require special care or treatment.

Institutional occupancy

means the occupancy or use of a building or

struc-ture or any portion thereof by persons harboured or detained to receive medical, charitable or other care or treatment, or by persons involuntarily detained.

Interior finish material

(see article 3.1.3.B.)

Load bearing

as applied to beams, girders, columns, posts, piers, lintels,

column bracing, joists, girts, purlins, rafters, roof and floor decking, means that such members transfer live or dead loads to another member or to the ground. It does not apply to roof insulation or finish or panel walls which do not transmit vertical loads from floor to floor.

Load, fire

means the average weight per unit area of the combustible

con-tents of a room or floor area in pounds per square foot and includt;s the

furnishings, finished floor, combustible trim, and temporary or movable

partitions.

Load, high occupant

means that the number of persons in a room or floor

area is such that the area of floor per person (total area divided by

num-ber of persons) is B sq ft or less.

Means of egress

means a doorway, hallway, corridor, lobby, stair, ramp or

other facility or combination thereof, provided for the escape of persons from a building, floor area, or room to a public thoroughfare or other ap-proved open space. Means of egress include exits and access to exits.

Mercantile occupancy

means the occupancy or use of a building or structure

or any portion th,ereof for the displaying, selling, or buying of retail goods, wares or merchandise by large groups of people.

Noncombustible

as applied to a building construction material means a

material that falls in one of the following groups (a) through (c).

(a) Materials that are classed as noncombustible when tested in accordance with CSA specification B54.1-1960, "Determination of Non-Combusti-bility of Building Materials."

(b) Materials having a structural base of noncombustible material, as de-fined in (a), with a surfacing not over liB-in. thick which has a flame spread rating not higher than 50.

(c) Materials, other than as described in (a) or (b), having a surface flame spread rating not higher than 25 without evidence of continued progressive combustion and of such composition that surfaces that would be exposed by cutting through the material in any way would not have a flame spread rating higher than 25 without evidence of continued progressive combustion.

Note.-"Noncombustible" does not apply to surface finish materials nor to the

determination of whether a material is noncombustible from the standpoint of clearances to heat-producing units, venting equipment, pipes and ducts regu-lated in Part 6: Building Services.