Room Calculations

Living Room

 Dimensions:     18ft x 17 ft  = 306 sq ft Requires:          15 footcandles or 15 Lumens/square foot   1 foot candle = 1 lumen/sq ft   This room needs 15 lumens per square foot, therefore:   15 lumen  x  306 sq ft   =  4590 lumens required in the room     sq ft
 Incandescent Requirement:   1 Bulb = 1690 Lumen   Using the 4590 lumen requirement:   4590 lumen / (1690 lumen/ bulb) = 2.72 bulbs   Therefore we need 3 incandescent bulbs ( rounded from 2.72)  to meet the lumen/fc needs for this room.   Compact Fluorescent Requirement:   1 Bulb = 1750 Lumen   Using the 4590 lumen requirement:   4590 lumen / (1750 lumen/ bulb) = 2.62 bulbs   Therefore we need 3 Compact Fluorescent bulbs ( rounded from 2.62)  to meet the lumen/fc needs for this room.

bedroom #1

 Bedroom 1   Dimensions:     13 ft x 19 ft  = 247 sq ft Requires:          15 footcandles or 15 Lumens/square foot  3705 lumens required in the room   Incandescent Requirement:   Using the 3705 lumen requirement:   3705 lumen / (1690 lumen/ bulb) = 2.19 bulbs   Therefore we need 3 incandescent bulbs ( rounded from 2.19)  to meet the lumen/fc needs for this room.   Compact Fluorescent Requirement:   Using the 3705 lumen requirement:   3705 lumen / (1750 lumen/ bulb) = 2.12 bulbs   Therefore we need 3 Compact Fluorescent bulbs (rounded from 2.12)  to meet the lumen/fc needs for this room.

bedroom #2

 Bedroom 2   Dimensions:     14 ft x 19 ft  = 266 sq ft Requires:          15 footcandles or 15 Lumens/square foot  This room needs 15 lumens per square foot, therefore:   3990 lumens required in the room   Incandescent Requirement:   Using the 3990 lumen requirement:   3990 lumen / (1690 lumen/ bulb) = 2.36 bulbs   Therefore we need 3 incandescent bulbs ( rounded from 2.36)  to meet the lumen/fc needs for this room.   Compact Fluorescent Requirement:   Using the 3990 lumen requirement:   3990 lumen / (1750 lumen/ bulb) = 2.28 bulbs   Therefore we need 3 Compact Fluorescent bulbs (rounded from 2.28)  to meet the lumen/fc needs for this room.

Hallway

 Hallway   Dimensions:     18 ft x 4 ft  = 72 sq ft Requires:          7.5 footcandles or 7.5 Lumens/square foot This room needs 7.5 lumens per square foot, therefore:   540 lumens required in the room   Incandescent Requirement:   Using the 540 lumen requirement:   540 lumen / (1690 lumen/ bulb) = .32 bulbs   Therefore we need 1 incandescent bulb ( rounded from .32)  to meet the lumen/fc needs for this room.   Compact Fluorescent Requirement:   Using the 540 lumen requirement:   540 lumen / (1750 lumen/ bulb) = .31 bulbs   Therefore we need 1 Compact Fluorescent bulb (rounded from .31)  to meet the lumen/fc needs for this room.

Hallway sink

 Hallway Sink   Dimensions:     4 ft x 3 ft  = 12 sq ft Requires:          75 footcandles or  75 Lumens/square foot   This room needs 75 lumens per square foot, therefore:   900 lumens required in the area     Incandescent Requirement:   Using the 900 lumen requirement:   900 lumen / (1690 lumen/ bulb) = .53 bulbs   Therefore we need 1 incandescent bulb ( rounded from .53)  to meet the lumen/fc needs for this area.   Compact Fluorescent Requirement:   Using the 900 lumen requirement:   900 lumen / (1750 lumen/ bulb) = .51 bulbs   Therefore we need 1 Compact Fluorescent bulb (rounded from .51)  to meet the lumen/fc needs for this area.

Bathroom

 Bathroom   Dimensions:     9 ft x 7 ft  = 63 sq ft Requires:          75 footcandles or 75 Lumens/square foot   This room needs 75 lumens per square foot, therefore:   4725 lumens required in the room   Incandescent Requirement:   Using the 4725 lumen requirement:   4725 lumen / (1690 lumen/ bulb) = 2.8 bulbs   Therefore we need 3 incandescent bulbs ( rounded from 2.8)  to meet the lumen/fc needs for this room.   Compact Fluorescent Requirement:   Using the 4725 lumen requirement:   4725 lumen / (1750 lumen/ bulb) = 2.7 bulbs   Therefore we need 3 Compact Fluorescent bulbs (rounded from 2.7)  to meet the lumen/fc needs for this room.

dinning room

 Dining Room   Dimensions:     9 ft x 10 ft  = 90 sq ft Requires:          35 footcandles or 35 Lumens/square foot   This room needs 35 lumens per square foot, therefore:    3150 lumens required in the room   Incandescent Requirement:   Using the 3150 lumen requirement:   3150 lumen / (1690 lumen/ bulb) = 1.9 bulbs   Therefore we need 2 incandescent bulbs ( rounded from 1.9)  to meet the lumen/fc needs for this room.   Compact Fluorescent Requirement:   Using the 3150 lumen requirement:   3150 lumen / (1750 lumen/ bulb) = 1.8 bulbs   Therefore we need 2 Compact Fluorescent bulbs (rounded from 1.8)  to meet the lumen/fc needs for this room.

Kitchen

 Kitchen   Dimensions:     9 ft x 10 ft  = 90 sq ft Requires:          35 footcandles or 35 Lumens/square foot   This room needs 35 lumens per square foot, therefore:   3150 lumens required in the room   Incandescent Requirement:   Using the 3150 lumen requirement:   3150 lumen / (1690 lumen/ bulb) = 1.9 bulbs   Therefore we need 2 incandescent bulbs ( rounded from 1.9)  to meet the lumen/fc needs for this room.   Compact Fluorescent Requirement:   Using the 3150 lumen requirement:   3150 lumen / (1750 lumen/ bulb) = 1.8 bulbs   Therefore we need 2 Compact Fluorescent bulbs (rounded from 1.8)  to meet the lumen/fc needs for this room.

stove

 Stove   Dimensions:    2.5 ft x 3 ft  = 7.5 sq ft Requires:          75 footcandles or 75 Lumens/square foot  This area needs 75 lumens per square foot, therefore:   562.5 lumens required in the area   Incandescent Requirement:   Using the 562.5 lumen requirement:   562.5 lumen / (1690 lumen/ bulb) = .33 bulbs   Therefore we need 1 incandescent bulb ( rounded from .33)  to meet the lumen/fc needs for this area.   Compact Fluorescent Requirement:   Using the 562.5 lumen requirement:   562.5 lumen / (1750 lumen/ bulb) = .32 bulbs   Therefore we need 1 Compact Fluorescent bulb (rounded from .32)  to meet the lumen/fc needs for this area.