BS476:Part 8:1972 Fire resistance for Building elements
BS476:Part 20:1987 Fire resistance for Building elements
BSEN 1363-1:1999 Fire resistance for Building elements
...
BS476:Part 8:1972 Fire resistance for Building elements
BS476:Part 20:1987 Fire resistance for Building elements
BSEN 1363-1:1999 Fire resistance for Building elements
...