Spring 98
40 Multiple, Mystical, Musical Choice Questions
1. In a room with a long reverberation time, you'd expect the majority of surfaces to be
A. reflective
B. diffusing
C. absorptive
D. none of the above
2. Given that the speed of sound in air is 1130 ft/sec; the wave length of a 1000 hz tone is
A. 1.13 inches
B. 0.88 inches
C. 13.56 inches
D. 10.62 inches
3. You measure a sound of rustling leaves five yards away to be 10-16 w/cm2. If you move to a position ten yards away from the leaves,
A. you won't be able to hear the sound
B. the sound will seem to be half as loud
C. the sound will be decreased in intensity by 3 dB
D. none of the above
4. A pleasant sound must be
A. less than 60dB
B. white noise
C. both of the above
D. none of the above
5. To achieve an architecturally intimidating space you would manipulate the acoustics by the
A. use of hard, smooth finish materials and furnishings in a large volume
B. use of hard materials with diffusing details in a small space
C. use of plush finish materials and overstuffed furnishings
D. any of the above
6. When two sounds of the same intensity, created equidistant from the observer are measured to be a combined 2dB, each of the sounds is
A. –1 dB
B. 0.5 dB
C. 1 dB
D. 2 dB
7. Theory has it that in a nice suburban office park the dull roar of traffic on the arterial road measured at 75 dB at the site boundary 50 feet from the roadway will be reduced at the build-to line, 200 ft from the roadway, to
A. a 69 dB dull roar
B. a 63 dB murmur
C. a 55 dB hummmmmmmm
D. a 45 dB whisper
8. A room type that has an acoustic goal of `quiet' is
A. a cinema
B. a chapel
C. a concert hall
D. none of the above
9. A room that is 200'x50'x15' and has a total absorption of 1000 Sabins will seem acoustically
A. dead
B. about right
C. live
D. any of the above
10. The most effective way to reduce sounds from off site is to provide a barrier made of
A. a row of deciduous trees
B. a tall, vegetated berm
C. a low brick wall
D. any of the above
11. A sound generated upwind from a rural site will be measured on the site as
A. louder than free field theory predicts
B. about the same as free field theory predicts
C. quieter than free field theory predicts
D. none of the above
12. Six cash registers cha-chinging in unison will be loudest in a
A. live room
B. neutral room
C. dead room
D. any room—resultant dBs are independent of room configuration
13. An architecture studio in a cylindrical space could exhibit
A. creep
B. focusing
C. both of the above
D. flutter echos
14. A fine symphony hall features
A. a wide hall configuration
B. electronic sound enhancement
C. long reverberation time
D. all of the above
15. An assembly hall built adjacent to a subway line can mitigate structure-borne sound by
A. the use of spring isolators beneath the floor of the hall
B. the use of a thick concrete wall between the hall and the subway
C. the use of a spring-hung ceiling
D. all of the above
16. To assure acoustic isolation of a NC 45 space from an adjacent space with a 75dB sound source, the wall should have at least
A. an NR of 75
B. an STC of 45
C. an NR of 45
D. an STC of 33
17. The best configuration for a symphony hall without electronic enhancements is
A. the classic shoebox
B. the wide hall
C. surround hall
D. any of the above
18. In Carnegie Hall, famous for its fine acoustics, seats with poor acoustics can be found
A. in the center of the hall
B. near the side walls
C. beneath deep balconies
D. nowhere
19. The nature of wave mechanics is the basis of
A. using a laser pointer to model sound waves in a physical scale model
B. using a water table to model two dimensional characteristics of sound propagation
C. using a 1:10 scale model and 10x sound frequencies to accurately model sound in a space
D. all of the above
20. The Globe Theatre in London accommodates the spoken word because of its
A. incredibly long reverberation times
B. capacity crowds and open-air environment
C. focusing dome structure
D. all of the above
21. A philosophy that accounts for the environmental cost of building considers
A. embodied energy in building materials
B. health issues
C. both of the above
D. none of the above
22. The true economic cost of a building is best described as its
A. first cost
B. discount cost
C. life cycle cost
D. all of the above
23. The residential heating system with the best second law efficiency is
A. a 90% efficient natural gas-fired furnace
B. a heat pump with a COP of 3.00
C. 95% efficient electric resistance baseboard heaters
D. a totally effective passive solar direct gain system
24. A really appropriate HVAC system for a symphony hall is
A. passive solar design
B. air-water dual duct high velocity
C. VAV all air
D. 4-pipe all water
25. In dark space (less than 1 fc), you'd be most aware of
A. color
B. motion
C. detail
D. none of the above
26. The best daylighting fixture both thermally and luminously is
A. a horizontal skylight
B. a horizontal skylight with a deep lightwell
C. a horizontal skylight with an effective external shading device
D. a horizontal skylight with an internal natural lighting fixture
27. The best glazing for daylighting for an unshaded aperture in a south wall is
A. translucent glazing
B. grey or bronze glazing
C. low-e glazing
D. clear double glazing
28. A Lightscape model shows
A. light levels on the work plane
B. renders the lighting on architectural surfaces via radiosity calculations
C. only daylight contributions to spatial lighting
D. none of the above
29. The most efficient torchiere features a
A. incandescent lamp
B. compact fluorescent lamp
C. halogen lamp
D. any of the above
30. The new ballast technology that eliminates perceptual flicker and allows continuous dimming is
A. magnetic
B. electric
C. electronic
D. computer-controlled
31. In a large room that has four HID lamps as the only sources of illumination, the proper calculation method for determining light levels is the
A. point source method
B. line source method
C. lumen method
D. zonal cavity method
32. More fixtures will be required to illuminate a room if
A. the CU is raised
B. the room cavity reflectance is raised
C. the lumen output of the lamps is raised
D. none of the above
33. For task lighting in a daylighted office space, a viable control strategy for energy savings is
A. infrared occupancy sensors
B. photocells that control step-dimmed wall sconces
C. photocells that control continuously dimmed indirect ceiling fixtures
D. all of the above
34. A city water system that uses well water and a conventional waste water treatment system that dumps effluent into the ocean
A. is an asset to the evapotranspiration system
B. effectively short-circuits the natural water cycle
C. helps sustain the water quality cycle
D. none of the above
35. When you build on a rural site and add acres of parking and a big box retail outlet, you will
A. add to the city effect
B. increase the area of the hundred year flood plain
C. decrease water quality
D. all of the above
36. The most restrictive plumbing codes now require
A. composting toilets
B. 0.5 gallon/flush toilets
C. 1.6 gallon/flush toilets
D. 3.5 gallon/flush toilets
37. Potable water can be produced on-site by
A. distillation
B. harvesting rainwater
C. tertiary treatment of rainwater
D. all of the above
38. Water conservation through xeriscaping dictates use of
A. recycled gray water
B. native vegetation
C. a constructed wetland
D. all of the above
39. An effective rainwater harvesting system features
A. a system to allow for roof cleaning at the onset of rainfall
B. a filtration system for collected water
C. roofing materials that are compatible with safe water standards
D. all of the above
40. Sustainable architecture should take into account
A. creation of pure water
B. conservation of energy
C. use of daylighting
D. all of the above