Skip to main content

Calculating daylight

The daylight factor method (CIE - E.U.) calculates how much daylight reaches any location in a room assuming overcast/diffuse conditions; and can account for corner windows, which cannot be accounted for using the lumen method (IES - U.S.). When 2,200 fc is measured on the ground outside, what is the resulting illumination level if one end of a room has a daylight factor of 2?



Answer is 2200 fc x 0.02 = 44 fc. DF is a percentage of the light available outside.
are-review.blogspot.com

Comments

Post a Comment

Try These Too!

Vertical louvers

On which elevations of a building are vertical louvers generally more effective? Select 2 A. East B. South C. West D. North Answer A. East and C. West (answer applies for northern hemisphere) ARE 4.0 exam prep: SPD
Post a Comment
See the answer »

Roof pitch

Which one of the following slopes in this illustration corresponds with an 8:12 pitch roof? A. 45° B. 36.87° C. 33.69° D. 26.57°
Post a Comment
See the answer »

Bolted connections

What is the minimum spacing of bolts specified by AISC? and preferred spacing? A. 1 1/4 times the diameter of the bolt; 2 times preferred B. 1 3/4 times the diameter of the bolt; 2 1/4 times preferred C. 2 1/3 times the diameter of the bolt; 2 2/3 times preferred D. 2 2/3 times the diameter of the bolt; 3 times preferred E. 3 times the diameter of the bolt; 3.25 times preferred
Post a Comment
See the answer »