Technical Booklet E Fire Safety·Page 72·Table 2.8
Limitations on uninsulated glazing in enclosures and fire doors - All other purpose groups
Sets permitted extents of glazing in walls and door leaves for buildings with access to single or multiple stairs, adjacent to external escape routes and external escape stairs.
Position of glazed element: Permitted extent of glazing in parts of a building with access to –
A single stair / More than one stair
Walls / Door leaf / Walls / Door leaf
10 Adjacent an external escape route described in paragraph 2.58
Unlimited above 1.1 m from level of route / Unlimited above 1.1 m from level of route / Unlimited above 1.1 m from level of route / Unlimited above 1.1 m from level of route
11 Adjacent an external escape stair described in paragraph 2.76
Not applicable / Not applicable / Unlimited / Unlimited
Notes:
All heights should be measured vertically from the floor, the landing level, the stair pitch line or the external escape route.
(1) If the protected stairway is also a protected shaft (see Section 4) or a firefighting stairway (see Section 6) there may be further restrictions on the uses of glazed elements.
(2) The 0.1 m limit is intended to limit the probability of fire spread from a floor covering.
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