SGGS - Comfort

Question 1

Accourding to Employee Surveys, ___ are a leading source of dissatisfaction within the environmental conditions of an office.

Answer 1

acoustic problems

Question 2

___ (more than 169 million) of all disability-adjusted life years (DALYs) resulted from musculoskeletal disorders

Answer 2

7%

Question 3

ACCESSIBILITY AND USABILITY

The project demonstrates compliance with one of the following:

Answer 3

• Current ADA Standards for Accessible Design

- ISO Standard.

Question 4

VISUAL ERGONOMICS

The following requirement is met:

Answer 4

-All computer screens, including laptops, are adjustable in terms of height and distance from the user.

Question 5

DESK HEIGHT FLEXIBILITY
At 30% of workstations that are at seated height or similar work surfaces, users have the ability to alternate
between sitting and standing through one of the following:

Answer 5

-Adjustable height sit-stand desks.
- Desk-top height adjustment stands.
-Pairs of fixed-height desks of standing and seated heights (which need not be located adjacent to
each other).

Question 6

SEAT FLEXIBILITY

Occupant furnishings are adjustable in the following ways:

Answer 6

• Workstation chair height adjustability is compliant with the HFES 100 standard or BIFMA G1 guidelines.
• Workstation seat depth adjustability is compliant with the HFES 100 standard or BIFMA G1 guidelines.

Question 7

SOUND PRESSURE LEVEL
Each regularly occupied space meets the following sound pressure level as measured when the space and
adjacent spaces are unoccupied, but within 1 hour of normal business hours:

Answer 7

-Average sound pressure level from outside noise intrusion does not exceed 50 dBA.

Question 8

ACOUSTIC PLANNING

An acoustic plan is developed that identifies the following spaces and potential sources of disruption:

Answer 8

• Loud and quiet zones.

- Noisy equipment in the space.

Question 9

MECHANICAL EQUIPMENT SOUND LEVELS
The mechanical equipment system meets the following requirements once interior build-out is complete in the
following spaces:

Answer 9

• Open office spaces and lobbies that are regularly occupied and/or contain workstations: maximum noise criteria (NC) of 40.
• Enclosed offices: maximum noise criteria (NC) of 35.
• Conference rooms and breakout rooms: maximum noise criteria (NC) of 30 (25 recommended).

Question 10

VENTILATED THERMAL ENVIRONMENT
All spaces in mechanically-ventilated projects (including circulation areas) meet the design, operating and
performance criteria:

Answer 10

-ASHRAE Standard Comfort Zone Compliance

Question 11

NATURAL THERMAL ADAPTATION

All spaces in naturally-conditioned projects meet the following criteria:

Answer 11

-ASRAE Adaptive Comfort Model

Question 12

SOURCE SEPARATION
All restrooms, janitorial closets, kitchens, cafeterias and pantries prevent strong odors from migrating to workspaces through one or more of the following separation methods:

Answer 12

• Negative pressurization.
• Self-closing doors.
• Hallways, vestibules or other intermediate areas.

Question 13

REVERBERATION TIME

The following spaces have maximum reverberation time (RT60) as described:

Answer 13

• Conference rooms: 0.6 seconds.

- Open workspaces: 0.5 seconds.

Question 14

SOUND MASKING USE

All open workspaces use the following:

Answer 14

-Sound masking systems

Question 15

SOUND MASKING LIMITS
If sound masking systems are used, sound levels fall within the following range, when measured from the nearest workspace:

Answer 15

• Open workspaces: 45 - 48 dBA.

- Enclosed offices: 40 - 42 dBA.

Question 16

The body’s core temperature within its narrow range, ___.

Answer 16

97-100 °F

Question 17

Reverberation time (RT60) is:

Answer 17

A metric which describes the length of time taken for a sound to decay by 60 dB from its original level.

Question 18

CEILINGS

The following spaces, if present, have ceilings that meet the specifications described:

Answer 18

• Open workspaces: minimum NRC of 0.9 for the entire surface area of the ceiling (excluding lights, skylights, diffusers, beams, joists and grilles).
• Conference and teleconference rooms: minimum NRC of 0.8 on at least 50% of the surface area of the ceiling (excluding lights, skylights, diffusers, beams, joists and grilles).

Question 19

VERTICAL SURFACES

The following spaces, if present, have vertical surfaces that meet the NRC specifications described:

Answer 19

• Enclosed offices, conference and teleconference rooms: minimum NRC of 0.8 on at least 25% of the surface area of interior surrounding walls.
• Open workspaces: minimum NRC of 0.8 on at least 25% of the surface area of the surrounding walls.
• Partitioned office spaces: partitions reach at least 48 inches and have a minimum NRC of 0.8

Question 20

The NRC of a material is:

Answer 20

An average value that determines its absorptive properties. The larger the NRC value, the better the material is at absorbing sound under standardized conditions.

Question 21

WALL CONSTRUCTION SPECIFICATIONS
The following spaces, if present, have interior partition walls that meet the Sound Transmission Class (STC)
described:

Answer 21

• Enclosed offices: minimum STC of 40 when a sound masking system is present, or minimum STC of 45 when no sound masking system is used.
• Conference rooms and teleconference rooms: minimum STC of 53 on walls adjoining private offices, conference rooms or other teleconference rooms.

Question 22

DOORWAY SPECIFICATIONS
Doors connecting to private offices, conference rooms and teleconference rooms are constructed with at least
one of the following:

Answer 22

• Gaskets.
• Sweeps.
• Non-hollow core.

Question 23

WALL CONSTRUCTION METHODOLOGY
All interior walls enclosing regularly occupied spaces are constructed for optimal performance by reducing air
gaps and limiting sound transmission through the following:

Answer 23

• Properly sealing all acoustically rated partitions at the top and bottom tracks.
• Staggering all gypsum board seams.
• Packing and sealing all penetrations through the wall.

Question 24

FREE ADDRESS

Projects over 2,150 ft² meet the following free address requirement:

Answer 24

• The building provides a thermal gradient of at least 5 °F across open workspaces and between floors or rooms with more than 10 people.
• All open office spaces with occupants performing tasks that require similar workstations allow for at least 50% free address to allow occupants to select a work space with a desired temperature.

Question 25

PERSONAL THERMAL COMFORT DEVICES

The following condition is met in spaces with 10 or more workstations in the same heating or cooling zone:

Answer 25

-Occupants have access to personal thermal comfort devices such as fans (excluding space heaters).

Question 26

LOBBIES AND OTHER COMMON SPACES
All lobbies and other common spaces meet the requirements set forth in ASHRAE Standard 55-2013 for thermal comfort through the use of one of the following systems:

Answer 26

• Hydronic radiant heating and/or cooling systems.

- Electric radiant systems

Question 27

OFFICES AND OTHER REGULARLY OCCUPIED SPACES
At least 50% of the floor area in all offices and other regularly occupied spaces meets the requirements set forth in ASHRAE Standard 55-2013 for thermal comfort through the use of one of the following systems:

Answer 27

• Hydronic radiant heating and/or cooling systems.

- Electric radiant systems.

Question 28

The benefits of radiant thermal heat:

Answer 28

• Saved floor space
• Lower dust transportation
• Increased thermal comfort through the separation of temperature controls and outdoor air supply systems
• Radiant temperature in a space can be kept lower compared to convective heating, providing the benefit of a slightly higher relative humidity in winter time.