NCC 2019 Volume One
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WA Part H101 Public buildings

WA Part H101 Public buildings

Note:

Note:

WA Part H101 contains Deemed-to-Satisfy Solutions for WA public buildings that are additional to those contained in Sections D, F and H.

WA H101.0 Deemed-to-Satisfy Provisions

(a)

Where a Deemed-to-Satisfy Solution is proposed, Performance Requirements DP1, DP2, DP3, DP4, DP6 and FP4.2 are satisfied by complying with—

(i)

Part D1, Part D2 and F4.4; and

(ii)

for additional requirements for WA public buildings, WA Part H101.

(b)

Where a Performance Solution is proposed, the relevant Performance Requirements must be determined in accordance with A2.2(3) and A2.4(3) as applicable.

WA H101.1 Application of Part

The Deemed-to-Satisfy Provisions of this Part apply to a WA public building or part of a building.

WA H101.2 Additional exits

In a WA public building, each storey that accommodates more than 50 persons must have more than one exit from that storey.

WA H101.3 Goings and risers

(a)

Steps serving a WA public building must have risers not more than 180 mm and goings not less than 280 mm.

(b)

The requirements of (a) do not apply to steps in a fire-isolated stairway.

WA H101.4 Handrails to ramps, flights and landings

(a)

For a WA public building, handrails must be located along—

(i)

both sides of a ramp or flight; and

(ii)

each side of a landing, except for that part of a side that is interrupted by a ramp or flight.

(b)

The requirements of (a) do not apply to—

(i)

handrails referred to in D2.18; or

(ii)

handrails located within a fire-isolated stairway or fire-isolated ramp.

WA H101.5 Artificial lighting

(a)

Artificial lighting must be provided along the external path of travel (including steps, landings, ramps or paths) to a road or open space associated with each exit from a WA public building.

(b)

The artificial lighting system required by (a) must—

(i)

provide a minimum illuminance of 1 lux at ground level; and

(ii)

be connected to circuits separate from those supplying lighting for foyers, entry porches, emergency escape passages or areas providing entry or egress to the WA public building; and

(iii)

be connected over two circuits where two or more lights are required; and

(iv)

have switches that are not able to be operated by members of the public.

WA H101.6 Fixed seating

Where fixed seating in a Class 9b WA public building is arranged in more than one row—

(a)

Aisles must be provided on both sides of every row that contains more than 10 seats; and

(b)

The number of seats in a row between aisles must not exceed 42.