Podcast
Questions and Answers
What is the purpose of using a plan of the room along with the protractor to determine the sky component (SC)?
What is the purpose of using a plan of the room along with the protractor to determine the sky component (SC)?
- To determine the average altitude angle
- To read values on the inner and outer scales of the protractor
- To get a correction factor for the window of a finite length (correct)
- To calculate the externally reflected component (ERC)
What is the initial sky component (SC) value read from the outer scale of the protractor?
What is the initial sky component (SC) value read from the outer scale of the protractor?
- 0.2%
- 2.3%
- 4.8% (correct)
- 4.6%
How is the correction factor for the sky component (SC) calculated?
How is the correction factor for the sky component (SC) calculated?
- By multiplying the initial SC value by the difference between the inner scale values
- By interpolating an arc for the average altitude angle and reading the values on the inner scale
- By subtracting the inner scale values from the initial SC value
- By adding the inner scale values if they are on the same side, or using the sum if they are on different sides (correct)
What is the purpose of drawing radial lines from point O to the two edges of the window on the plan?
What is the purpose of drawing radial lines from point O to the two edges of the window on the plan?
What is the value of the sky component (SC) after applying the correction factor?
What is the value of the sky component (SC) after applying the correction factor?
What is the purpose of determining the average altitude angle when calculating the sky component (SC)?
What is the purpose of determining the average altitude angle when calculating the sky component (SC)?
What should be done if there is an obstruction outside the window?
What should be done if there is an obstruction outside the window?
What is the reflectance of the obstruction's surface assumed to be?
What is the reflectance of the obstruction's surface assumed to be?
What is the first step in determining the Internally Reflected Component (IRC)?
What is the first step in determining the Internally Reflected Component (IRC)?
What is the purpose of laying a straight edge across the points on the nomogram for IRC determination?
What is the purpose of laying a straight edge across the points on the nomogram for IRC determination?
What is the purpose of determining the altitude angle of the top edge of an obstruction outside the window?
What is the purpose of determining the altitude angle of the top edge of an obstruction outside the window?
What is the final step in determining the Internally Reflected Component (IRC)?
What is the final step in determining the Internally Reflected Component (IRC)?
Which component represents the direct light from the sky that enters the room through the window?
Which component represents the direct light from the sky that enters the room through the window?
What does the formula DF = [Ei / Eo] × 100 represent?
What does the formula DF = [Ei / Eo] × 100 represent?
Which component represents the light that is reflected from external surfaces onto the window?
Which component represents the light that is reflected from external surfaces onto the window?
What is the purpose of using a physical model (1:20) in daylighting prediction?
What is the purpose of using a physical model (1:20) in daylighting prediction?
What is the purpose of artificial skies in daylighting studies?
What is the purpose of artificial skies in daylighting studies?
What does the formula DF = [SC + ERC + IRC] × M × G × B represent?
What does the formula DF = [SC + ERC + IRC] × M × G × B represent?
