SGGS - Comfort Flashcards
(28 cards)
Accourding to Employee Surveys, ___ are a leading source of dissatisfaction within the environmental conditions of an office.
acoustic problems
___ (more than 169 million) of all disability-adjusted life years (DALYs) resulted from musculoskeletal disorders
7%
ACCESSIBILITY AND USABILITY
The project demonstrates compliance with one of the following:
- Current ADA Standards for Accessible Design
- ISO Standard.
VISUAL ERGONOMICS
The following requirement is met:
-All computer screens, including laptops, are adjustable in terms of height and distance from the user.
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:
-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).
SEAT FLEXIBILITY
Occupant furnishings are adjustable in the following ways:
- 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.
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:
-Average sound pressure level from outside noise intrusion does not exceed 50 dBA.
ACOUSTIC PLANNING
An acoustic plan is developed that identifies the following spaces and potential sources of disruption:
- Loud and quiet zones.
- Noisy equipment in the space.
MECHANICAL EQUIPMENT SOUND LEVELS
The mechanical equipment system meets the following requirements once interior build-out is complete in the
following spaces:
- 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).
VENTILATED THERMAL ENVIRONMENT
All spaces in mechanically-ventilated projects (including circulation areas) meet the design, operating and
performance criteria:
-ASHRAE Standard Comfort Zone Compliance
NATURAL THERMAL ADAPTATION
All spaces in naturally-conditioned projects meet the following criteria:
-ASRAE Adaptive Comfort Model
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:
- Negative pressurization.
- Self-closing doors.
- Hallways, vestibules or other intermediate areas.
REVERBERATION TIME
The following spaces have maximum reverberation time (RT60) as described:
- Conference rooms: 0.6 seconds.
- Open workspaces: 0.5 seconds.
SOUND MASKING USE
All open workspaces use the following:
-Sound masking systems
SOUND MASKING LIMITS
If sound masking systems are used, sound levels fall within the following range, when measured from the nearest workspace:
- Open workspaces: 45 - 48 dBA.
- Enclosed offices: 40 - 42 dBA.
The body’s core temperature within its narrow range, ___.
97-100 °F
Reverberation time (RT60) is:
A metric which describes the length of time taken for a sound to decay by 60 dB from its original level.
CEILINGS
The following spaces, if present, have ceilings that meet the specifications described:
- 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).
VERTICAL SURFACES
The following spaces, if present, have vertical surfaces that meet the NRC specifications described:
- 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
The NRC of a material is:
An average value that determines its absorptive properties. The larger the NRC value, the better the material is at absorbing sound under standardized conditions.
WALL CONSTRUCTION SPECIFICATIONS
The following spaces, if present, have interior partition walls that meet the Sound Transmission Class (STC)
described:
- 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.
DOORWAY SPECIFICATIONS
Doors connecting to private offices, conference rooms and teleconference rooms are constructed with at least
one of the following:
- Gaskets.
- Sweeps.
- Non-hollow core.
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:
- 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.
FREE ADDRESS
Projects over 2,150 ft² meet the following free address requirement:
- 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.
