NCC 2022 Volume One - Building Code of Australia Class 2 to 9 buildings
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I4
NSW Part I4 Entertainment venues other than temporary structures and drive-in theatres
NSW Part I4 Entertainment venues other than temporary structures and drive-in theatres
Introduction to this Part
NSW Part I4 contains Deemed-to-Satisfy Provisions additional to those contained in Sections C, D, E, F and G for buildings containing or used as an entertainment venue other than temporary structures and drive-in theatres.
NSW I4D1 Application of Part2019: NSW H101.1
This Part applies to every entertainment venue as described in the Environmental Planning and Assessment Regulation 2021.
foyer space (excluding stairways and concession areas) must be provided on the basis of at least 0.25 m2 for each person that the auditorium accommodates.
If the foyer serves not more than 2 auditoriums, that foyer must be separated from any adjoining foyer by construction having an FRL of not less than 60/60/60.
If the foyer serves more than 2 auditoriums, a sprinkler system (other than a FPAA101D or FPAA101H system) complying with Specification 17 must be installed—
NSW I4D6 to NSW I4D9 apply to a conventional stage, that is, a stage which is separated from the auditorium by a proscenium wall incorporating a proscenium opening.
NSW I4D6 Conventional stages: extent of stage area2019: NSW H101.5.1
If a room or area is not separated from the remainder of a conventional stage by construction having an FRL of not less than 60/60/60, the room or area is, for the purposes of this Part, to be taken to form part of the stage.
NSW I4D7 Conventional stages: small stages2019: NSW H101.5.2
A stage which is more than 50 m2 but not more than 150 m2 in area must have 2 or more means of egress from the stage and backstage area provided otherwise than through the proscenium wall.
must have installed directly above the stage a suitable sprinkler system (other than a FPAA101D or FPAA101H system) complying with Specification 17; and
must have the proscenium opening protected by a safety curtain that complies with NSW I4D15 and NSW I4D16; and
must have a line of open drenchers or open sprinklers provided above the proscenium opening on the stage side and in such a position as to be able to discharge over the inside face of the safety curtain; and
must have 2 or more means of egress from the stage and backstage area provided otherwise than through the proscenium wall.
NSW I4D9 Conventional stages: fire separation of stages2019: NSW H101.5.4
A stage which is more than 50 m2 in area, and all areas below such a stage, must (with the exception of the proscenium opening) be separated from the backstage and the remainder of the building by construction having an FRL of not less than 60/60/60.
a fly gallery must be provided with at least 2 means of egress, one on each side of the stage; and
a grid or rigging loft must be provided with at least 2 means of egress; and
if exposed steel is used in the construction of a roof, fly or tie gallery, the roof, fly or tie gallery must be so designed that, in the event of its structural failure due to fire, the wall structure of the building will not be affected; and
structural steel supporting the stage tower must be enclosed by masonry or concrete and have an FRL of not less than 120/120/120.
(2) In addition to (1), in the case of a conventional stage, the following additional requirements apply:
The proscenium wall must—
have an FRL of not less than 120/120/120; and
have the proscenium opening protected by a rigid safety curtain in accordance with NSW I4D16.
The walls forming the stage area, and the area beneath the stage, must be constructed of masonry or concrete and have an FRL of not less than 120/120/120.
(1) A notice indicating the actual distributed and concentrated load for which the stage floor has been designed must be conspicuously and permanently displayed in a position adjacent to the stage floor.
(2) The notice must be in legible letters and figures—
be so fitted that, when it is closed, it forms an efficient smoke seal between the stage and the auditorium; and
be capable of withstanding a pressure differential of 0.5 kPa over its entire surface area; and
be run on steel guides located on each side of the proscenium opening; and
remain engaged in its guides if the guides, together with their fittings and attachments and that part of the curtain engaged in the guides, are subjected to a pressure differential of 1 kPa; and
be of sufficiently robust construction to withstand damage by scenery, stage properties and falling debris; and
be capable of closing the proscenium opening within 30 seconds, either by gravity slide or by motor assisted mechanisms; and
have manual controls, located on each side of the stage, for the closing of the curtains; and
have a notice displayed adjacent to the operating controls, in clear and legible letters and symbols of adequate size, indicating its use and operation; and
when operated, actuate a distinctive warning alarm audible to persons on the stage and must not be reliant for its operation solely on the primary electricity supply; and
have the words “Safety Curtain” exhibited on the curtain in clear and legible letters of adequate size to enable them to be read from all parts of the auditorium.
A rigid safety curtain required by NSW I4D13 must comply with the requirements of NSW I4D15 and it must—
be vertically hung from steel cables; and
be framed with structural steel that complies with AS 4100; and
be sheeted and finished on both sides with sheet steel or other non-combustible material of such gauge, and so fastened to its frame, as to ensure that its frame is capable of withstanding distortion arising from heat; and
when closed, overlap the proscenium opening by not less than 300 mm at each side and by not less than 600 mm at the top.
NSW I4D22 Seating in rows: radiating aisles in seating areas2019: NSW H101.11.5
Where seating is securely fastened to the floor and arranged in rows of concentric circles, semi-circles or segments of circles, with radiating aisles—
the number of seats in each row between 2 aisles must not exceed 24; and
each seat must—
have a minimum lateral clearance of at least 325 mm between the front of the seat and the back of the seat in front; and
have a distance of at least 975 mm between the back of the seat and the back of the seat in front; and
the platforms and steps must extend for the full width of the aisle; and
if there are no intervening steps between levels of platforms, the height of the platform riser must not be more than 200 mm; and
if there are one or more intervening steps between the levels of platforms—
each riser must be at least 100 mm but not more than 200 mm high; and
each going must be at least 250 mm deep; and
risers and goings must be uniform; and
goings which are more than 450 mm deep at platform level must have a grade of not more than 1 in 50; and
at the entrance from the aisle to each row there must be a clear level floor space, extending the full width of the aisle, of at least 300 mm, measured from the back of the row in front; and
any going projecting in front of a seat adjacent to an aisle must be protected by a guardrail.
NSW I4D25 Seating in rows: stepped platforms2019: H101.11.8
Where stepped platforms without chairs or stepped platforms with bench seats, are used for seating—
each platform must be at least 700 mm deep; and
each seating space must be at least 450 mm wide, measured along the front of the platform or bench seat; and
each seating space must be numbered consecutively; and
at the entrance from the aisle to each row there must be a clear level floor space, extending the full width of the aisle, of at least 300 mm, measured from the back of the row in front; and
any going projecting in front of a seat adjacent to an aisle must be protected by a guardrail; and
in the case of stepped platforms with bench seats, there must be at least 300 mm between the back of each seat and the front of the platform behind, or the front of the bench seat behind, whichever is the closer.
NSW I4D29 Continental seating: depth of seating2019: NSW H101.12.3
The depth of each row of seating (that is, the distance between the back of the row in front or, if there is a guardrail in front, between the back of the row and the guardrail) must, in respect of a row containing a number of seats specified in Column 1 of NSW Table I4D29, be not less than the distance specified in Column 2 of that Table in respect of that number of seats.
NSW I4D30 Continental seating: clearance between rows2019: NSW H101.12.4
The minimum lateral clearance between each row of seating must, in respect of a row containing a number of seats specified in Column 1 of NSW Table I4D29 be not less than the clearance specified in Column 3 of that Table in respect of that number of seats.
Egress doorways through the walls of the auditorium—
must have an aggregate width of at least twice the sum of the clearances specified in Column 3 of NSW Table I4D29 for each row of the auditorium to be served by those doorways; and
must be provided at each end of every fifth row, excluding the first 2 rows and the last 2 rows in the auditorium if those rows each contain no more than 16 seats; and
At the entrance from a row to a clear area, there must be a clear level floor space having a width of at least the clearance specified for the row in Column 3 of NSW Table I4D29.
NSW I4D37 Provision of guardrails: fixed back seats2019: NSW H101.13.2
If seats with fixed backs are provided, guardrails that extend for the full width of the seating, must be provided at least 500 mm above the platform unless—
fixed back seats of the next lower level project at least 500 mm above the level of the stepped platform; and
there is only one riser between the platform and next lower cross-over.
NSW I4D38 Provision of guardrails: steps between platforms2019: NSW H101.13.3
If—
there is more than one intervening step in an aisle between levels of platforms, a guardrail must be provided (at a vertical height of at least 660 mm measured above the nosing of each tread and of the upper platform) to the sides of the aisle adjacent to those steps; and
there is more than one intervening step in an aisle between levels of platforms, and that aisle is along a wall, a continuous guardrail must be affixed to that wall at a height of at least 865 mm above the nosing of each tread; and
the end of the platform or the back of the highest platform does not abut a wall that extends at least 660 mm above the floor level of the platform, a guardrail not less than 660 mm high must be provided—
at the ends of the platform, extending from the front of the first riser to the back of the highest platform; and
at the back of the highest platform, extending the full width of the platform; and
there is an inclined floor, the raised section of which is not bounded by walls at least 660 mm high, a guardrail must be provided that extends around the perimeter of the raised section at a height of at least 660 mm above the inclined floor level; and
seating at tables is provided on a stepped platform, a guardrail at least 500 mm high must be provided along the front edge of the platform.
NSW I4D40 Guardrails for seating areas: continental seating2019: NSW H101.14.1
Where a guardrail is provided in front of a row of chairs—
the distance between the back of each chair in that row, and the guardrail must be not less than the distance specified in Column 2 of NSW Table I4D29 for the number of chairs in that row; and
the minimum lateral clearance between the front of each chair in that row and the guardrail must be not less than the clearance specified in Column 3 of NSW Table I4D29 for the number of chairs in that row.
NSW I4D41 Guardrails for seating areas: balconies and boxes2019: NSW H101.14.2
A guardrail provided along the fascia of a balcony or box—
if it is located at the foot of a stepped aisle, must have its top surface at least 900 mm above the floor of the balcony or box; and
if it is not located at the foot of a stepped aisle, must have its top surface at least 750 mm above the floor; and
if it has a ledge more than 70 mm wide, must have the top surface of the ledge sloping downwards towards the floor of the balcony or box at an angle of at least 30 degrees from the horizontal; and
must have an unperforated kerb or toe guard extending for at least 300 mm above the floor.
NSW I4D46 Projection suites: rooms to be provided2019: NSW H101.17.1
A projection suite in accordance with the staffing requirements of Schedule 72 of the Environmental Planning and Assessment Regulation 2021 must contain either—
a projection room and sanitary accommodation comprising at least 1 closet pan and 1 washbasin, where the projection suite is continually staffed; or
a projection room fitted with the following equipment—
an automatic fire suppression system in accordance with SSL Appraisal Specification FAS 102 or a sprinkler system complying with AS 2118; and
a smoke detection system which will—
comply with AS 1670.1; and
be connected to a fire station or other approved monitoring service where arrangements are in place to initiate fire brigade response; and
close down all shutters fitted to projection or observation ports; and
activate sufficient general lighting to provide a minimum of 40 lux measured at floor level in any auditorium affected; and
operate a public address system to automatically announce a suitable message from the management of the premises; and
activate an audible alarm to immediately indicate to management the presence of smoke in the projection room.
NSW I4D47 Projection suites: fire separation2019: NSW H101.17.2
A projection suite must be separated from all other internal parts of the building in which it is located by construction having an FRL of not less than 60/60/60.
NSW I4D48 Projection suites: concession for protection of some openings2019: NSW H101.17.3
If a projection or observation port is not more than 0.1 m2 in area—
a metal shutter not less than 1.5 mm thick may be fitted thereto instead of the protection required under NSW C4D12; and
any metal shutter or protection system must be equipped with a device to permit the closing of the shutter or the protection system from easily accessible operating positions adjacent to each egress doorway from the projection room.
(1) Any switch controlling the lighting system must not be accessible.
(2) Where, during normal use, general lighting may be dimmed or switched off, an override switch to switch on all of the general lighting instantaneously must be installed in the auditorium in a position accessible to management.
Where the lamps utilised in the general lighting are of a type that will not relight immediately after the restoration of the primary electricity supply to those lamps—
a time delay or other suitable means must be provided to maintain the emergency lighting for a period not less than that necessary to allow the general lighting lamps to restrike; or
lamps of a type that will provide immediate lighting must be installed and—
arranged in such a manner as to ensure visual conditions not inferior to those required to be provided by the emergency lighting; and
capable of being switched in common with the general lighting and of being controlled also by the override switch required by NSW I4D54(2).
NSW I4D56 Lighting: provision of aisle lighting2019: NSW H101.20.3
Where general lighting is to be either dimmed or extinguished when the public is in attendance and where the floor is stepped or at an inclination greater than 1 in 12, aisle lights must be provided to illuminate the length of each aisle and the tread of each step therein.
be capable of automatic operation by the inclusion of a heat sensing device designed to activate the system at a temperature of not more than 71°C; and
be capable of being released manually from positions at either side of the stage and of being fully activated from either position; and
have a notice, prominently displayed at each position referred to in (b), clearly indicating the method of activation; and
have an openable area of not less than 10 percent of the total area of the stage.