Answer / sudheer

we can calculate lux level by lux meter.

Total lumens required= A . E . D/U where,
A = surface area(sq.m)
E= illumination(lm/sq.m)
D= dipriciation factor
U= co-efficient of utilization

Answer / krishna pathak

To Calculate the no. of fittings in a room,
the formula is
N=No. of Light fittings required= A x E/(Lxuxd.f)
.'. E= N x (Lxuxd.f)/A
where L=> Lumen o/p
A=> Area (m^2)
E=> Illumination or Lux levels (in lux)
u=> coefficient of utilization
d.f=> Depreciation Factor
For Detail study refer Philips,G.E(lighting)& Artlite
Catalogues.

Answer / aarya

To Calculate the no. of fittings in a room,
the formula is
N=No. of Light fittings required= A x E/(Lxuxd.f)
.'. E= N x (Lxuxd.f)/A
where L=> Lumen o/p
A=> Area (m^2)
E=> Illumination or Lux levels (in lux)
u=> coefficient of utilization
d.f=> Depreciation Factor
For Detail study refer Philips,G.E(lighting)& Artlite
Catalogues.

Answer / uday kulkarni

Lux = Lumens/sq.ft.

for one are the formula will be -

Area in sq. mtrs X Required Lux
No. of fixtures = -------------------------------
Lumens O/p of fixture X U.F X D.F

Uday Kulkarni

Answer / chandrakant zingade

Per Sq.ft Lux = 1 x Total Lux / Total area in Sq.ft.

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