Typical examples using dense concrete of calcareous aggregates
(excluding limestone) or siliceous aggregates, eg. flints, quartzites
and granites ~
Column fully exposed ~
35 mm min. concrete cover to reinforcement300 mm min. each face, 120 minutes fire resistance
450 mm min. each face, 240 minutes fire resistanceColumn, maximum 50% exposed ~
200 mm min., 120 minutes fire resistance, 25 mm cover
350 mm min., 240 minutes fire resistance, 35 mm coverconcrete cover to reinforcement240 minute fire resistant
compartment wallColumn, one face only exposed ~
160 mm min., 120 minutes
fire resistance
240 mm min., 240 minutes
fire resistance25 mm min. cover240 minute fire resistant compartment wallBeam and floor slab ~
125 mm min. thickness reinforced
concrete compartment floor,
120 minutes fire resistance, 35 mm covercover
150 mm min., 120 minutes fire resistance, 50 mm cover
240 mm min., 240 minutes fire resistance, 70 mm coverReinforced Concrete--Fire Protection