Article 124Supplement v1, p. 124

COMMERCIAL LAWS SUPPLEMENT

when the guardrail is parallel and adjacent to the aisle:

Except,

that

the

height

may

be

reduced

to

900

millimeters

for

guardrails

located

in

front

of

the

grandstand.

(6.3) A midrail shall be placed adjacent to any seat to limit

the open distance above the top of any part of a seat to

250 millimeters where the seat is at the extreme end or at

the extreme rear of the bleachers or grandstand. The

intervening space shall have one additional rail midway in

the opening: Except , that railings may be omitted when

stands are placed directly against a wall or fence giving

equivalent protection; stairs and ramps shall be provided

with guardrails. Handrails at the front of stands and

adjacent to an aisle shall be designed to resist a load of 75

kilograms per linear meter applied at the top rail. Other

handrails

shall

be

designed

to

resist

a load of 40

kilograms per linear meter.

(7) Foot Boards — Footboards shall be provided for all

rows of seats above the third row or beginning at such

point

where

the

seating

plank

is

more

than

600

millimeters above grade.

(8) Exits — (8.1) Distance to Exit — The line of travel to an

exit shall not be more than 45.00 meters. For stands with

seats without backseats this distance may be measured

by direct line from a seat to the exit from the stand.

(8.2) Aisle Used as Exit — An aisle may be considered as

only one exit unless it is continuous at both ends to a

legal building exit or to a safe dispersal area.

(8.3) Two Exits Required — A stand with the first seating

board not more than 500 millimeters above grade of floor

may be considered to have two exits when the bottom of

the stand is open at both ends. Every stand or section of a

stand within a building shall have at least two means of

egress when the stand accommodates more than 50

persons.

Every open air stand having seats without

backrest shall have at least two means of egress when the

stand accommodates more than 300 persons.

(8.4) Three Exits Required — Three exits shall be required

for stands within a building when there are more than

300 occupants within a stand and for open air stands

with seats without backrests where a stand or section of a

stand accommodates more than 1000 occupants.

(8.5) Four Exits Required — Four exits shall be required

when a stand or section of a stand accommodates more

than 1000 occupants: Except, that for an open air stand

with seats without backrests four exits need not be

provided unless there are accommodations for more than

3000 occupants.

(8.6) Width — The total width of exits in meters shall not

be less than the total occupant load served divided by 165:

Except, that for open air stands with seats without

backrests the total width of exits in meter shall not be less

than the total occupant load served divided by 500 when

existing by stairs, and divided by 650 when existing by

ramps or horizontally. When both horizontal and stair

exits are used, the total width of exits shall be determined

by using both figures as applicable. No exit shall be less

than 1.10 meters in width. Exits shall be located at a

reasonable distance apart. When only two exits are

provided, they shall be spaced not less than one-fifth of

the perimeter apart.

(9) Securing of Chairs — Chairs and benches used on

raised stands shall be secured to the platforms upon

which they are placed: Except, That when less than 25

chairs are used upon single raised platform the fastening

of seat to the platform may be omitted. When more than

500 loose chairs are used in connection with athletic

events, chairs shall be fastened together in groups of not

less than three, and shall be tied or staked to the ground.

(10) Safe Dispersal Area — Each safe dispersal area shall

have at least two exits. If more than 6000 persons are to

be accommodated within such an area, there shall be a

minimum of three exits, and for more than 9000 persons

there shall be a minimum of four exits. The aggregate

clear width of exits from a safe dispersal area shall be

determined on the bases of not less than one exit unit of

600

millimeters

for

each

500

persons

to

be

accommodated and not exit shall be less than 1.10 meters

in width, a reasonable distance apart that shall be spaced

not less than one-fifth of the perimeter of the area apart

from each other.

(o) Special Hazards — (1) Boiler Rooms — Except in Group

A

Occupancies,

every

boiler

room

and

every

room

containing an incinerator or liquefied petroleum gas or

liquid fuel-fired equipment shall be provided with at least

two means of egress, one of which may be a ladder. All

interior openings shall be protected as provided for in this

Code.

(2)

Cellulose

Nitrate

Handling

—

Film

laboratories,

projection rooms, and nitro-cellulose processing rooms

shall have not less than two exits.

SECTION 1208. Skylights . — (a) All skylights shall be

constructed with metal frames except those for Groups A

and J Occupancies. Frames of skylights shall be designed

to carry loads required for roofs. All skylights, the glass of

which is set at an angle of less than 45 degrees from the

horizontal, if located above the first storey, shall be set at

least 100 millimeters above the roof. Curbs on which the

skylights

rest

shall

be constructed of incombustible

materials except for Types 1 or 11 Construction.

(b) Spacing between supports in one direction for flat

wired glass in skylights shall not exceed 625 millimeters.

Corrugated wired glass may have supports 1.50 meters

apart in the direction of the corrugation. All glass in

skylights shall be wired glass: Except, that skylights over

vertical shafts extending through two or more storeys

shall be glazed with plain glass as specified in this Code:

Provided, that wire glass may be used in ventilation equal

to not less than one-eight the cross-sectional area of the

shaft but never less than 1.20 meters is provided at the

top of such shaft. Any glass not wire glass shall be

protected above and below with a screen constructed of

wire not smaller than 2.5 millimeters in diameter with a

mesh not larger than 25 millimeters. The screen shall be

substantially supported below the glass.

(c) Skylights installed for the use of photographers may

be constructed of metal frames and plate glass without

wire netting.

(d) Ordinary glass may be used in the roof and skylights

for

greenhouses,

Provided ,

That

height

of

the

greenhouses at the ridge does not exceed 6.00 meters

above the grade. The use of wood in the frames of

skylights will be permitted in greenhouses outside of

highly restrictive Fire Zones if the height of the skylight

does not exceed 6.00 meters above the grade, but in

other cases metal frames and metal sash bars shall be

used.

(e) Glass used for the transmission of light, if placed in

floors

or sidewalks, shall be supported by metal or

reinforced concrete frames, and such glass shall not be

less than 12.5 millimeters in thickness. Any such glass over

100 square centimeters in area shall have wire mesh

embedded in the same or shall be provided with a wire

screen underneath as specified for skylights in this Code.

All portions of the floor lights or sidewalk lights shall be of

the same strength as required for floor is surrounded by a

railing not less than 1.10 meters in height, in which case

the construction shall be calculated for not less than roof

loads.

SECTION 1209. Bays, Porches, and Balconies . — (a) Walls

and floors in bay and oriel windows shall conform to the

construction allowed for exterior walls and floors of the

type of construction of the building to which they are

attached. The roof covering of a bay or oriel window shall

conform to the requirements of the roofing of the main

roof. Exterior balconies attached to or supported by wall

required to be of masonry, shall have brackets or beams

constructed of incombustible materials. Railings shall be

provided for balconies, landings, or porches which are

more than 750 millimeters above grade.

© Compiled by RGL

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