Comfort COPY

Question 1

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

Answer 1

Noise criteria (NC)

Question 2

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

Answer 2

International Organization for Standardization (ISO)

Question 3

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

Answer 3

Sound pressure level

Question 4

A laboratory method for determining sound transmission through a wall.

Answer 4

Sound transmission class (STC)

Question 5

The average value that determines the absorptive properties of materials.

Answer 5

Noise reduction coefficient (NRC)

Question 6

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

Answer 6

30

Question 7

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 ___.

Answer 7

ASHRAE Standard 55-2013

Question 8

Leading source of dissatisfaction with office conditions?

Answer 8

acoustic problems

Question 9

How many people worldwide have Lower back pain?

Answer 9

7% of population

Question 10

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

Answer 10

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

Question 11

Thermal comfort - only ___% of buildings met occupant satisfaction

Answer 11

11%

Question 12

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

Answer 12

30% HFES 100 or BIFMA G1

Question 13

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

Answer 13

50 dBA

Question 14

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

Answer 14

loud and quiet zones and noisy equipment

Question 15

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

Answer 15

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

Question 16

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

Answer 16

ASHRAE 55-2013

Question 17

What is Homeothermy?

Answer 17

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

Question 18

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

Answer 18

negative pressurization

interstitial rooms

vestibules

hallways

self-closing doors

Question 19

78. Reverberation time - RT60 is ___. What is it for conference rooms and open office spaces?

Answer 19

the time it takes for sound level to decrease 60 dB

.6 sec

.5 sec

Question 20

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

Answer 20

45-48 dBA in open workspaces

40-42 dBA in enclosed offices

Question 21

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

Answer 21

0. 9+ NRC on 25% surfaces
1. 8+ NRC on 25% surfaces

Question 22

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

Answer 22

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

Question 23

81 - Sound Barriers part 1 - wall specs ___ NIC

Enclosed offices: w/ or w/o sound masking

Confernce room:

Answer 23

40 STC with

45 STC without

53 STC

Question 24

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

Answer 24

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

Question 25

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

Answer 25

10

Question 26

83 - Radiant Heat what are the 4 benefits?

Answer 26

saved floor space

lower dust

increased thermal comfort thru separation of controls from outdoor air

higher winter humidity

Question 27

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

Answer 27

Lobbies/Common areas - 100%

Offices - 50%

ASHRAE 55-2013

Question 28

Disability Adjusted Life for muscoloskeletal disorders

Answer 28

7%