Travel Distance (Egress) Building Codes & Rules

≤ 20m^{NCC 2022 Vol 1, D2D5 (1) (b)}

≤ 6m^{NCC 2022 Vol 1, D2D12 (3)}

Fire-isolated Exit

Storey with Direct Egress in Class 2 & 3

• ≥ 1 Exit^{NCC 2022 Vol 1, D2D3 (2) (b) (ii)} with ≤ 20m^{NCC 2022 Vol 1, D2D5 (1) (a) (ii)} Travel Distance from
• Entrance Door of a Sole-occupancy Unit, &
• Any other point not within a Sole-occupancy Unit

Sole Occupancy Unit

Top Riser or Ramp

Point of

Choice

≤ 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

Alternative Exits^{NCC 2022 Vol 1, D2D6}

• ≥ 9m to ≤ 45m apart for Class 2 or 3
• ≥ 9m to ≤ 60m apart for Class 4
• Uniformly distributed

Class 9