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WELL AP 7.11.2020 > Comfort > Flashcards

Comfort Flashcards

1
Q

The sound pressure limits of the octave band spectra ranging from 63 Hz to 8000 Hz.

A

Noise criteria (NC)

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2
Q

An independent, non-governmental international organization that develops consensus-based, market-relevant standards for worldwide use.

A

International Organization for Standardization (ISO)

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3
Q

The pressure variation associated with sound waves, usually measured in decibels (dB). Also known as acoustic pressure.

A

Sound pressure level

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4
Q

A laboratory method for determining sound transmission through a wall.

A

Sound transmission class (STC)

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5
Q

The average value that determines the absorptive properties of materials.

A

Noise reduction coefficient (NRC)

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6
Q

Desk Height Flexibility of Feature 73 requires that at least ___% of workstations have the ability to alternate between sitting and standing positions.

A

30

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7
Q

The second part of Feature 83, Radiant Thermal Comfort, requires that at least 50% of the floor area in all offices and other regularly occupied spaces meet the requirements of ___.

A

ASHRAE Standard 55-2013

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8
Q

Leading source of dissatisfaction with office conditions?

A

acoustic problems

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9
Q

How many people worldwide have Lower back pain?

A

7% of population

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10
Q

Total # of days of work missed due to MSDs (musculoskeletal disorders) - back pain, neck pain, osteoarthritis, carpal tunnel etc.

A

380,600 days makes up 1/3 of total days absent

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11
Q

Thermal comfort - only ___% of buildings met occupant satisfaction

A

11%

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12
Q

73 - Ergonomics; chair height and seat depth are adjustable and compliant with ____.

A

30% HFES 100 or BIFMA G1

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13
Q

74 - Exterior Noise Intrusion Within 1 hour of normal business hours sound intrusion does not exceed ___dBA

A

50 dBA

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14
Q

75 - Internally Generated Noise Accoustic Plan identifies ___ and ___.

A

loud and quiet zones and noisy equipment

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15
Q

Noise Criteria - max noise from HVAC in spaces: Teleconference rooms___ Conference Rooms___ Enclosed Offices___ Open Offices ____

A

Noise Criteria - max noise in spaces: Teleconference rooms - 20 NC Conference Rooms - 30 NC Enclosed Offices - 35 NC Open Offices - 40 NC

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16
Q

76 - Thermal Comfort Part 1 Mechanically ventilated projects must meet criteria under ____.

A

ASHRAE 55-2013

17
Q

What is Homeothermy?

A

balancing of heat gain and loss to regulate core temp between 97-100

18
Q

77 - Olfactory Comfort - Source separation - all restrooms, janitorial closets, kitchens, cafeterias and pantries use these 5 methods to keep odors from migrating:

A

negative pressurization

interstitial rooms

vestibules

hallways

self-closing doors

19
Q
  1. Reverberation time - RT60 is ___. What is it for conference rooms and open office spaces?
A

the time it takes for sound level to decrease 60 dB

.6 sec

.5 sec

20
Q

79 - sound masking (white noise) speakers emit low-level background noise so sounds is measured at ____dBA in open workspaces and ___ dBA in enclosed offices

A

45-48 dBA in open workspaces

40-42 dBA in enclosed offices

21
Q

80 - Sound Reducing Surfaces (acoustical panels - Ceilings) ____NRC in open workspaces and ___ NRC in enclosed offices

A
  1. 9+ NRC on 25% surfaces
  2. 8+ NRC on 25% surfaces
22
Q

What is NRC? Is a higher or lower number better?

A

Noise Reduction Coefficient - measures absorptive properties - the higher the number the better it can absorb sound

23
Q

81 - Sound Barriers part 1 - wall specs ___ NIC

Enclosed offices: w/ or w/o sound masking

Confernce room:

A

40 STC with

45 STC without

53 STC

24
Q

82 - Individual Thermal Comfort (free address) projects over ___ SF allow ___% free address, which provides for __ degree gradient across space

A

2,150 SF at least 50% free address 5 degrees

25
Q

82 - Individual Thermal Comfort (fans & heaters) employees have access to fans and heaters when there are more than ___ workstations in same heating/cooling zone.

A

10

26
Q

83 - Radiant Heat what are the 4 benefits?

A

saved floor space

lower dust

increased thermal comfort thru separation of controls from outdoor air

higher winter humidity

27
Q

83 - Radiant Heat which 2 spaces are covered? what standard?

A

Lobbies/Common areas - 100%

Offices - 50%

ASHRAE 55-2013

28
Q

Disability Adjusted Life for muscoloskeletal disorders

A

7%

WELL AP 7.11.2020 (10 decks)

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