12-20-2014, 03:14 PM
ANSI B-77 Aerial Tramway Standards
The following is an outline of the ANSI B77.1-1999 American National Standard for Passenger Ropeways -- Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors -- Safety Requirements
ANSI B77.1-1999
Provides construction, operation and maintenance guidelines on how to meet the intent of the ADA to provide access to persons with disabilities
ADA and ADAAG
Americans with Disabilities Act Accessibility Guidelines
Sections
General requirements
Aerial tramways
Detachable grip aerial lifts
Fixed grip aerial lifts
Surface lifts
Tows
Wire rope, strand, and chain requirements
Conveyors
Sub-Sections
For sections 2, 3, 4, 5, 6, 8
x.1 Design and installation
x.2 Electrical design and installation
x.3 Operation and maintenance
Chair Height Definition
1.4 Definitions
Distance between the top surface, including padding of the chair seat, to the loading or unloading point surface
Chair Height
1.4 Definitions
Account for the longitudinal swing of the chair which lowers the height
Implied operational commitment to swing the chair back to the desired angle
Mazes and Corrals
x.1.1.9.1.1 Loading areas for chairlifts
Shall be approximately level
Should be as straight as possible with gradual turns
Control Points
x.1.1.9.1.1 Loading areas for chairlifts
At least one point shall have a minimum clearance of 36 in.
Alternative access is acceptable for existing construction
Approach Path
x.1.1.9.1.1 Loading areas for chairlifts
Approximately level or slightly downsloped
Loading Areas
x.1.1.9.1.1 Loading areas for chairlifts
Load gates, artificial surfaces and other loading aids shall be designed and installed with regards to all passengers, including adaptive
Lift Load Point
x.1.1.9.1.1 Loading areas for chairlifts
Loading areas shall be approximately level
"Load here" point shall be marked
Chairlift Exit Ramp
x.1.1.9.2 Unloading areas
Shall be sloped no more than 30%
Seat height shall not exceed 22 in.
Evacuation
x.1.1.10 Provisions for evacuation
Provisions shall be made for emergency evacuation of common passenger types
Cabins -- New Construction
x.1.4.4.2 Cabin
Minimum 32 in. width
Maximum gap 1 in.
Maximum step height 0.5 in.
Minimum clear floor space 48 x 30 in.
Existing Aerial Passenger Tram -- Recommendations
Special carriers can be provided
Maximum 10 min. wait for carrier
Cabins -- Existing Construction
x.1.4.4.2 Cabin
Where it is not operationally or structurally practical to meet these requirements, platform devices, vehicle devices, system devices, or bridge plates shall be provided for independent loading
Chairlift Seat Thickness
x.1.4.4.4 Chairs
Thickness of chair seat front including padding, shall not exceed 5 in. from the top of the seating surface to the bottom of the curl
Chairlift Seat Angle
x.1.4.4.4 Chairs
Tilt back angle of the seat bottom should be a minimum of 7 deg. when loaded
Chairlift -- Ski Entanglement
x.1.4.4.4 Chairs
Provisions shall be made to keep tails of skis from passing through and being trapped in open spaces between framework safety restraints and chair seat underside
Chairlift Height
x.3.1.1.2 Additional signs for detachable chairlifts
A sign shall be posted stating the nominal loading chair height +/- 2 in.
The sign shall be posted with the riding instructions
Training of Personnel
x.3.2.1 Personnel
Procedures for loading and unloading of passengers including passengers with common adaptive equipment shall be included in the training
Plan for Evacuation
x.3.2.5.7 Evacuation
Shall include methods of evacuation to be used for the typical passenger, incapacitated passenger, common adaptive equipment, and non-ambulatory passenger
Operational Log
x.3.5.1 Operational Log
Daily inspection including loading and unloading platforms, seat height, ramps, and signs
All Passenger Types
x.3.6.1 Dexterity and ability
Shall be presumed to have sufficient skiing ability, physical dexterity, or personal assistance to negotiate and be evacuated from the aerial tramway safely
Conveyors -- Belt Width
8.1.1.3.1 Conveyor belt length/width
Minimum conveyor belt width 22 in.
Conveyors -- Path Width
8.1.1.3.2 Path width
A minimum clear walking surface that should be snow for skiers along both sides of the conveyor shall be 18 in. wide as a minimum measured from the exposed edge of the belt
Acknowledgments
National Ski Areas Association
Sid Roslund
ANSI B77 Committee Administrator
Peter Axelson
ANSI B77 ADA Ad Hoc Chair
Beneficial Designs, Inc.
The information in this thread was found on the Beneficial Designs website.
The following is an outline of the ANSI B77.1-1999 American National Standard for Passenger Ropeways -- Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors -- Safety Requirements
ANSI B77.1-1999
Provides construction, operation and maintenance guidelines on how to meet the intent of the ADA to provide access to persons with disabilities
ADA and ADAAG
Americans with Disabilities Act Accessibility Guidelines
Sections
General requirements
Aerial tramways
Detachable grip aerial lifts
Fixed grip aerial lifts
Surface lifts
Tows
Wire rope, strand, and chain requirements
Conveyors
Sub-Sections
For sections 2, 3, 4, 5, 6, 8
x.1 Design and installation
x.2 Electrical design and installation
x.3 Operation and maintenance
Chair Height Definition
1.4 Definitions
Distance between the top surface, including padding of the chair seat, to the loading or unloading point surface
Chair Height
1.4 Definitions
Account for the longitudinal swing of the chair which lowers the height
Implied operational commitment to swing the chair back to the desired angle
Mazes and Corrals
x.1.1.9.1.1 Loading areas for chairlifts
Shall be approximately level
Should be as straight as possible with gradual turns
Control Points
x.1.1.9.1.1 Loading areas for chairlifts
At least one point shall have a minimum clearance of 36 in.
Alternative access is acceptable for existing construction
Approach Path
x.1.1.9.1.1 Loading areas for chairlifts
Approximately level or slightly downsloped
Loading Areas
x.1.1.9.1.1 Loading areas for chairlifts
Load gates, artificial surfaces and other loading aids shall be designed and installed with regards to all passengers, including adaptive
Lift Load Point
x.1.1.9.1.1 Loading areas for chairlifts
Loading areas shall be approximately level
"Load here" point shall be marked
Chairlift Exit Ramp
x.1.1.9.2 Unloading areas
Shall be sloped no more than 30%
Seat height shall not exceed 22 in.
Evacuation
x.1.1.10 Provisions for evacuation
Provisions shall be made for emergency evacuation of common passenger types
Cabins -- New Construction
x.1.4.4.2 Cabin
Minimum 32 in. width
Maximum gap 1 in.
Maximum step height 0.5 in.
Minimum clear floor space 48 x 30 in.
Existing Aerial Passenger Tram -- Recommendations
Special carriers can be provided
Maximum 10 min. wait for carrier
Cabins -- Existing Construction
x.1.4.4.2 Cabin
Where it is not operationally or structurally practical to meet these requirements, platform devices, vehicle devices, system devices, or bridge plates shall be provided for independent loading
Chairlift Seat Thickness
x.1.4.4.4 Chairs
Thickness of chair seat front including padding, shall not exceed 5 in. from the top of the seating surface to the bottom of the curl
Chairlift Seat Angle
x.1.4.4.4 Chairs
Tilt back angle of the seat bottom should be a minimum of 7 deg. when loaded
Chairlift -- Ski Entanglement
x.1.4.4.4 Chairs
Provisions shall be made to keep tails of skis from passing through and being trapped in open spaces between framework safety restraints and chair seat underside
Chairlift Height
x.3.1.1.2 Additional signs for detachable chairlifts
A sign shall be posted stating the nominal loading chair height +/- 2 in.
The sign shall be posted with the riding instructions
Training of Personnel
x.3.2.1 Personnel
Procedures for loading and unloading of passengers including passengers with common adaptive equipment shall be included in the training
Plan for Evacuation
x.3.2.5.7 Evacuation
Shall include methods of evacuation to be used for the typical passenger, incapacitated passenger, common adaptive equipment, and non-ambulatory passenger
Operational Log
x.3.5.1 Operational Log
Daily inspection including loading and unloading platforms, seat height, ramps, and signs
All Passenger Types
x.3.6.1 Dexterity and ability
Shall be presumed to have sufficient skiing ability, physical dexterity, or personal assistance to negotiate and be evacuated from the aerial tramway safely
Conveyors -- Belt Width
8.1.1.3.1 Conveyor belt length/width
Minimum conveyor belt width 22 in.
Conveyors -- Path Width
8.1.1.3.2 Path width
A minimum clear walking surface that should be snow for skiers along both sides of the conveyor shall be 18 in. wide as a minimum measured from the exposed edge of the belt
Acknowledgments
National Ski Areas Association
Sid Roslund
ANSI B77 Committee Administrator
Peter Axelson
ANSI B77 ADA Ad Hoc Chair
Beneficial Designs, Inc.
The information in this thread was found on the Beneficial Designs website.