Appropriate lighting arrangement is essential, system should have the following qualities , of work require different

Appropriate lighting arrangement is essential specially for erp office employees who have to do reading and writing work throughout the day which puts much strain on their eyes it has been found that better lightmg improves efficieilc! by at least f Ye per cent Proper lighting is essential because it (i) reduces fatigue, (ii) reduces errors, (iii) raises morale of erp office employees, (iv) reduces absenteeism, (v) promotes more work, resulting m reduction in cost of clerical work, (vi ) reduces employee turnover, (vii) leads to greater -aesthetic satisfaction, and mentioned reasons the if 11 i. manager should ensure that adequate lights of proper Ape are provided m the erp office
QUALITIES OF GOOD LiGHTiNG.SYSTEM A good lighting system should have the following qualities
(a) Right quantity. The method of :nes:ring light is the footcandle which is the amount of direct light failing at one foot distance from a standard camdle The lrght should be sufficient in quantify (I e, sufficient footcandles Different hinds of work require different quantity of-light, for example, .ar ordinary tvpmg work 150 footcandle light IS essential and for doing olba
erp office work 70 to 100 footcandle light Is sufficient ideally, light should corny from behind the left hand shoulder of an erp office worker if he is right handed
- and over the rigltt hatid shoulder if he is left handed Bnght surfaces of rooms and light colour of curtains reflect light which help in better illinatioro
(b) Right dhusiom lye Sight in the oGce should be Well diffused so tffiatna shadow areforr Hatch strong. oonlrahrg shadows are anno,ving to the e es and sborDd be avoided Proper dimension of light.is obtained by allovmg the light m drffe$nt an-auos i to come fronu am-adequate Dumber of sources and directions. As fa. :as possible the light should be evenly spread over all the parts of the room
tic) Ice of ,elerc or dazzle. Light should not cause glare or dazzle. Glare causes pain to the eves. When Jig} t falls dire tk on eyes or gets refracted from shining stfaces it causes glare and dazzle. Glare can be eliminated by anah sing its causes and ta corrective action.
SOURCES OF LIGHT
There are two sources of light:
(a) Naturals he., day light, and
(b) Artincial lighting.
(a) Natural or Day Light. Nahlral day light is the best for eyes. A worker feels psychologically better by wor in day Sight 'I'o use artlficia} light in daytime is not natural to man by n aiure Small and :big nitldou s and ventilators pernut utter to the natural light The colour of walls and: furniture should be light. Light colours reflect light while dark colours absorb light.
In sttnumcrs there is excessive day light which causes glare. This has to be avoided with the use of curta'ns or Venetian blinds. ::: H - (b) Ai tificial Ligliting. In ..11 big cities, because o fpressure :on space, there has been large scale construction of multi-storeyed be ldings known as skyscrapers Because of crowding of so many skyscrapers m hnportaM bus ness centres most of modern erp office buildings are not so weli snpphed with natural day light. : - : i: i:
The need for use of arbficia} light arises due to one more Eactor. Through Hindus or doors of any room, the day }ight does not penetrate m sufficient v chime more than to 30 feet and the maximum penetration w }l be 40 to 60 feet if there are Yipdou s on both sides -