Skip to main content

Daylighting - EA

Successful daylighting can be achieved with an effective aperture (EA) of between 0.20 - 0.30. Which of the following provides an EA within this range?
1. 105 sf net glazing area with visible light transmittance (VLT) of 0.38, in a space whose gross exterior wall area is 150 sf
2. 100 sf net glazing area with VLT of 0.53, in a space whose gross exterior wall area is 200 sf
3. 42 sf net glazing area with VLT of 0.88, in a space whose gross exterior wall area is 140 sf

AnswerEA = VT x WWR. EA = 0.264 - 0.266 - each of these windows offers the same effective aperture within the ideal value range.

Comments

Post a Comment

Try These Too!

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 »

Thermal insulation

Which of the following types of thermal insulation can be blown into wall or ceiling cavities with least difficulty, but contains no adhesive properties? I. Cellulose II. Rock wool III. Vermiculite IV. Mineral wool V. Straw VI. Polyicynene Answer I, II and III are loose-fill types of insulation that can be blown. IV comes in batts, V can come in boards or bales, VI is a spray-foam that adheres to the cavity. ARE 4.0 exam prep: BS
Post a Comment
See the answer »

Curb cuts

In a curb ramp that has either built-up or flared sides, the maximum slope of the incline should not exceed 1:12. What is the maximum slope of the (flared)sides in these types of curb ramps? A. 1:8, B. 1:10, C. 1:12, D. 1:16
Post a Comment
See the answer »