Posted By Andrew W
Broadly - up to 5 people, 1 toilet and washstation; 6-25 people, 2 toilets and washstations; 1 extra toilet and washstation for each subsequent 25 people. For men a mixture of toilets and urinals can be provided. Toilets should never communicate directly with a room in which food is prepared or eaten.

Taken from http://www.lhc.org.uk/me.../pubs/factsht/48fact.htm

Andy

Posted By Bob Shillabeer
Generally this is covered by the Workplace, Health ands Safety Regulations 1992 specifically Regulations 20 and 21, table 1 of Regulation 21 holds a table showing the minimum requirements for mixed sex offices/workplaces and table 2 for men only.

The figures are Table 1:
1 to 5 needs 1 WC and 1 wash station
6 to 25 needs 2 WCs and 2 wash stations
26 to 50 needs 3 WCs and 3 wash stations
51 to 75 needs 4 WCs and 4 wash stations
and 76 to 100 5 WCs and 5 wash stations

Table 2 is more generous
1 to 15 needs 1 WC and 1 Urinal
16 to 30 needs 2 WCs and 1 Urinal
31 to 45 needs 2 WCs and 2 Urinals
46 to 60 needs 3 WCs ans 2 Urinals
61 to 75 needs 3 WCs and 3 Urinals
75 to 90 needs 4 WCs and 3 Urinals
and 91 to 100 needs 4 WCs and 4 Urinals.

Un case of sanitory accomodation used only by men, table 2 may be followed if desired, as an alternative to column 2 of table 1. A urinal may either be an individul urinal or a section of urinal space which is at least 600mm long.

Remember an additonal WC is required for every 25 people above the 100 or the fraction of 25.

For fuller reference I suggest you refer to the Regs themselves as there are some splits when working with over 100 staff.

Regards Bob.