NCC 2019 Volume Two
Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

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Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c
2.6 Design scenario (VS)

2.6 Design scenario (VS)

Vertical fire spread involving external cladding or external openings

Design scenario in brief

A fire source exposes the external wall or arrangement of openings in a building and leads to significant vertical fire spread.

Required outcome

Demonstrate that the building’s external cladding / facade and arrangement of openings in the building do not increase the risk to life resulting from a fire beyond that for a similar building complying with the Deemed-to-Satisfy Provisions.

2.6.1 Design scenario description

This design scenario applies to all buildings where there is a risk of vertical fire spread.

Comment:

Comment:

This design scenario is not concerned with building-to-building fire spread across a relevant boundary, as this is addressed in the design scenario: HS (see 2.5).

2.6.2 Method

Demonstrate compliance with CV3.