Technical Booklet R Access to and Use of Buildings·Page 22·3.9
Effective clear width of accessible entrance doorway
Accessible entrance doorways must provide minimum effective clear widths as specified in Table 3.1, which vary based on building type and whether it is new construction or an existing building undergoing alteration or material change of use.
An accessible entrance doorway should contain a leaf which provides an effective clear width of not less than that given in column (2) of Table 3.1. This effective clear width applies to a single leaf door or one leaf of a double leaf door. However, where a double leaf door is power operated, the effective clear width may be incorporated between both leaves provided those leaves operate simultaneously.
Where a building is to be altered or undergo a material change of use and the effective clear width given in column (2) of Table 3.1 cannot be achieved, an accessible entrance doorway may contain a leaf which provides an effective clear width of not less than that given in column (3) of Table 3.1.
The effective clear width of a doorway should be measured in accordance with Diagram 3.1.
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