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In general advice was based on:-
(a) The re-positioning of light sources;
(b) The provision of fluorescent lighting;
(c) The reduction of glare caused by reflecting surfaces at the work plane;
(d) The provision of "matt-surfaces" as backgrounds to close work whenever possible;
(e) The suggestion to spread a light at its source by using suitable shades.
PREMISES INSPECTED DURING THE MONTH OF NOVEMBER 1965
(a) Offices
In the 90 office premises or office portions of business premises inspected light meter
readings were taken in 188 rooms.
TOTAL NO. OF LIGHT METER
READINGS TAKEN AT:-
LIGHT METER READINGS IN LUMENS PER SQUARE FOOT
LESS THAN
5
BETWEEN
5-10
BETWEEN
10-15
BETWEEN
15-25
OVER.
25
DESKS or regular working planes, e.g.
typewriter, 344
Nil
13
52
112
167
(4%)
(15%)
(33%)
(48%)
Other parts of office involving
incidental work, e.g. filing cabinet,
123
46
51
18
6
2
(37%)
(41%)
(15%)
(5%)
(2%)
(b) Shops
A cross-section analysis of 2,046 light meter readings showing the average strength of
lighting in lumens per square foot in the selling and working areas of the 341 shop premises
inspected.
SELLING AREAS
STOCK ROOMS
PACKING
DEPTS.
PREPARATION
ROOMS
WASH ROOMS &
TOILETS
STAIRS AND
CORRIDORS
30
10
10
14
4
2
l.s.f.
l.s.f.
l.s.f.
l.s.f.
l.s.f.
l.s.f.
CONCLUSIONS AND RECOMMENDATIONS
(i) It is reasonable to assume that the detailed information and observations contained in
this report are fairly representative of the shops and office premises throughout the Borough.
(ii) The findings of the report emphasise the need for regulations prescribing statutory
standards of lighting calling for accurate measurement by light meter or other scientific aid.
(iii) It is felt that the introduction of statutory! standards would not impose undue hardship
on occupiers of shop and office premises, and in the majority of instances they would be prepared
to accept them.
(iv) Generally speaking, employers seemed to appreciate that, with the high cost of labour,
it was in their interests to provide the best possible light to produce the most efficient work from
the staff.
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