Glazed screens in protected shafts

Glazing may be incorporated in the wall between a protected shaft containing a stairway, and a corridor or lobby which gives access to that stairway provided that – (a) the protected shaft is not a firefighting shaft; (b) the protected shaft is not required to have more than 60 minutes fire resistance; and (c) the glazing has not less than 30 minutes fire resistance in respect of integrity; and either – (i) the glazing is limited in extent in accordance with Table 2.8; or (ii) the corridor or lobby has not less than 30 minutes fire resistance (see Diagram 4.3).