Amendment No.3 to BS7671:1992 (AMD 10983)

Section 601 Locations Containing Bath or Shower

601-01 Scope

The particular requirements of this section apply to locations containing baths, showers and cabinets containing a shower and/or bath, and the surrounding zones. They do not apply to emergency facilities in industrial areas and laboratories. For locations containing baths or showers for medical treatment, or for disabled persons, special requirements may be necessary.

601-02 Classification of Zones

601-02-01 These requirements are based on the dimensions of four zones: zone 0, zone1, zone 2, and zone 3. The zones are determined taking account of walls, doors, fixed partitions, ceilings and floors, where these effectively limit the extent of a zone. Figures 601A and 601B are examples of the zones.

Zone 0 is the interior of the bath tub or shower basin.
In a location containing a shower without a basin, zone 0 is limited by the floor and by the plane 0.05m above the floor. In this case:
(i) where the shower head is demountable and able to be moved around in use, zone 0 is limited by the vertical plane(s) at a radius of 1.2m horizontally from the water outlet at the wall; or
(ii) where the shower head is not demountable, zone 0 is limited by the vertical plane(s) at a radius of 0.60m from the shower head.

Zone 1 is limited by:
(i) the upper plane of zone 0 and the horizontal plane 2.25m above the floor; and
(ii) by the vertical plane(s) circumscribing the bath tub or shower basin and includes the space below the bath tub or shower basin where that space is accessible without the use of a tool; or
for a shower without a basin and with a demountable shower head able to be moved around in use, zone 1 is limited by the vertical plane(s) at a radius of 1.2m from the water outlet at the wall; or
for a shower without a basin and with a shower head which is not demountable, zone 1 is limited by the vertical plane(s) at a radius 0.60m from the shower head.

Zone 2 is limited by:
(i) the vertical plane(s) external to zone 1 and parallel vertical plane(s) 0.60m external to zone 1; and
(ii) the floor and the horizontal plane 2.25m above the floor.

In addition, where the ceiling height exceeds 2.25m above the floor, the space above zone 1 up to the ceiling or a height of 3.0m above the floor, which ever is lower, is zone 2.

Zone 3 is limited by:
(i) the vertical plane(s) external to zone 2 and the parallel vertical plane(s) 2.40m external to zone 2;and
(ii) the floor and the horizontal plane 2.25m above the floor.

In addition, where the ceiling height exceeds 2.25m above the floor, the space above zone 2 up to the ceiling or a height of 3.0m above the floor, which ever is lower, is zone 3.