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Cavity barriers at intersections
Diagram 4.4NI-wide·Technical Booklet E Fire Safety
Diagram 4.4 Cavity barriers at intersections (a) Section - wall with cavity and compartment floor showing cavity barrier and alternative method to carry wall up to underside of floor with suspended c
fire-safetycavity-barrierscompartmentationstructuralCavity walls excluded from certain provisions for cavity barriers
Diagram 4.5, para 4.35 4.36(a), 4.39 4.40(a) and Table 4.6 Items 1, 3 & 4NI-wide·Technical Booklet E Fire Safety
External cavity wall of two leaves of brick, block or concrete each at least 75 mm thick – cavity width 300 mm maximum. Cavity barrier at top of wall (unless cavity is totally filled with insulation).
fire-safetycavity-barriersexternal-wallsCombustible materials permitted in cavity walls
Diagram 4.5 NotesNI-wide·Technical Booklet E Fire Safety
Combustible material should not be placed in or exposed to the cavity except for – (a) timber lintels, window or door frames, or the ends of timber joists; (b) pipe, conduit or cable; (c) d.p.c., flas
fire-safetycavity-barrierscombustible-materialsdwellingAlternative arrangement of cavity barriers in roof space over protected stairway
Diagram 4.6, para 4.36(a) and Table 4.6 item 2NI-wide·Technical Booklet E Fire Safety
Alternative arrangement of cavity barriers in roof space over a protected stairway in a dwellinghouse of three or more storeys. (a) With cavity barrier(s) as required by Table 4.6. (b) Alternative arr
fire-safetycavity-barriersdwellingstairshigh-rise