Travel Distance (Egress) Building Codes & Rules

≤ 20m^{NCC 2022 Vol 1, D2D5 (1) (b)}

≤ 20m^{NCC 2022 Vol 1, D2D5 (1) (b)}

≤ 20m^{NCC 2022 Vol 1, D2D5 (1) (b)}

Alternative Paths

• ≥ 6m separation^{NCC 2022 Vol 1, D2D6 (d)}

Non-fire-isolated Stair or Ramp

• Constructed of
• Concrete
• ≥ 6mm thk steel^{NCC 2022 Vol 1, D3D4 (b)}
• ≥ 44mm thk timber^{NCC 2022 Vol 1, D3D4 (c) (i)}

Separation of Flights^{NCC 2022 Vol 1, D3D5}

• Non-combustible & smoke proof
• Separation of rising & descending Egress Stairs

≤ 20m^{NCC 2022 Vol 1, D2D5 (1) (b)}

≤ 20m^{NCC 2022 Vol 1, D2D5 (1) (b)}

≤ 20m^{NCC 2022 Vol 1, D2D5 (1) (a) (ii)}

≥ 3m^{NCC 2022 Vol 1, D2D12 (3) (b)}

≥ 3m^{NCC 2022 Vol 1, D2D12 (3) (b)}

60/60/60 FRL^{NCC 2022 Vol 1, D2D12 (3) (a) (i)}

≤ 6m^{NCC 2022 Vol 1, D2D5 (1) (a) (i)}

≤ 6m^{NCC 2022 Vol 1, D2D5 (1) (a) (i)}

Point of

Choice

Fire-isolated Exits

• Doors that may open into a Fire-isolated Stair^{NCC 2022 Vol 1, D2D12 (1)}
• Public Corridor or Lobby
• Sole-occupancy Unit if occupying the entire Storey
• Sanitary compartment or Airlock
• Space under must not be enclosed to form a cupboard or similar enclosed space^{NCC 2022 Vol 1, D3D9 (1)}

Level of Egress

Basement

Above Egress Storey

Discharge to Open Space

Barrier^{NCC 2022 Vol 1, D2D15 (1)}

• Prevents blockage
• Bollard in Carparks

Discharge to Open Space

Non-combustible & Smoke Proof Wall

Descending Flight

Rising Flight

Other than Sole

Occupancy Unit

Sole Occupancy Unit

Non-fire-isolated Stair^{NCC 2022 Vol 1, D3D9 (2)}

• Space under (including external Stairway) may be enclosed with
• 60/60/60 FRL Walls & ceiling
• -/60/30 FRL self-closing Fire Door

Basements^{NCC 2022 Vol 1, D2D3 (3)}

• ≥ 2 Exits if
• > 1.5m Rise to Egress point
• ≥ 1 Exit allowed if
• ≤ 50m² Floor Area, &
• ≤ 20m Travel Distance

Point of Egress

Travel by Non-fire-isolated Stair or Ramp

• ≤ 60m total distance from Door of Sole Occupancy Unit to Point of Egress^{NCC 2022 Vol 1, D2D14 (2) (b)}
• ≤ 30m if Type C Construction^{NCC 2022 Vol 1, D2D14 (2) (a)}
• ≤ 15m from base of Stair or Ramp to Point of Egress^{NCC 2022 Vol 1, D2D14 (4) (a)}
• ≤ 30m if 2 Exits in opposite directions^{NCC 2022 Vol 1, D2D14 (4) (b)}

Avoiding Spread of Fire

• Installation of appropriate Fire-stopping solutions - ^{NCC 2022 Vol 1, C4D10}
• To Exits,
• To Sole-occupancy units & Public Corridors,
• In Between Buildings, &
• In a Building
• No services other than the following may penetrate fire-isolated exits^{NCC 2022 Vol 1, C1P2 (1)}
• Electrical wiring in compliance with NCC,
• ≥ -/120/60 FRL Wall penetrated by Pressurisation System Ducting, or
• For Fire Services, Water Supply & Test Drain Pipes

Path of Travel Near Subject Building

• ≤ 6m past same building's wall^[1]
• 60/60/60 FRL^[2]
• 3m above & below level of Path of Travel^[3]
• Openings protected internally^[4]

Protection of Openings

NCC 2022 V2

NCC 2022 Vol 1, C4D5 (1) (a) (ii)

NCC 2022 Vol 1, C4D5 (1) (a) (i)

NCC 2022 Vol 1, C4D5 (1) (b) (ii)

NCC 2022 Vol 1, C4D5 (1) (b) (iii)

NCC 2022 Vol 1, C4D5 (1) (c) (ii)

NCC 2022 Vol 1, D2D12 (3)

NCC 2022 Vol 1, D2D12 (3) (a) (i)

NCC 2022 Vol 1, C4D5

NCC 2022 Vol 1, D2D12 (3) (b)