Items where Year is Not Specified
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D
Effective clear width (door stop to projecting ironmongery)
Effective clear width (door stop to door leaf)
NOTES:
1. As an alternative to using the values in the table, the floor space factor may be determined by reference to actual data taken from similar premises. Where appropriate, the data should reflect the average occupant density at a peak trading time of year.
2. Where accommodation is not directly covered by the descriptions given, a reasonable value based on a similar use may be selected.
3. Where any part of the building is to be used for more than one type of accommodation, the most onerous factor(s) should be applied. Where the building contains different types of accommodation, the occupancy of each different area should be calculated using the relevant space factor.
4. For detailed guidance on appropriate floor space factors for concourses in sports grounds refer to Concourses published by the Football Licensing Authority.
5. Alternatively the occupant number may be taken as the number of fixed seats provided, if the occupants will normally be seated.
6. Shops excluding those under item 10, but including: supermarkets and department stores (main sales areas), shops for personal services, such as hairdressing, and shops for the delivery or collection of goods for cleaning, repair or other treatment or for members of the public themselves carrying out such cleaning, repair or other treatment.
7. Shops (excluding those in covered shopping complexes but including department stores) trading predominantly in furniture, floor coverings, cycles, prams, large domestic appliances or other bulky goods, or trading on a wholesale self-selection basis (cash and carry).
a. Surface area: roofs and rooflights In each case measure the visible area
b. Floor area: Room, garage, conservatory or outbuilding, measure to inner surface of enclosing walls
c. Floor area: Storey, part or compartment, measure to inner surface of enclosing walls and include internal walls and partitions
Height of building
NOTES:
1.In assembly buildings (purpose group 5), a gallery is included as a storey, but not if it is a loading gallery, fly gallery, stage grid, lighting bridge, or any gallery provided for similar purposes, or for maintenance and repair.
2.In other purpose group buildings, galleries are not counted as a storey.
3.For the definition of basement, see Appendix A.
Height of top storey measured from upper floor surface of top floor to ground level on lowest side of building
Height of top storey excludes roof-top plant areas and any top storeys consisting exclusively of plant rooms
Free area measured at right angles to air flow
Free area for louvred vent = a1+a2+a3+a4+a5