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.