Outline of ANSI B-77 Aerial Tramway Standards - Printable Version +- Ski Area Operations (http://skiindustry.org:/forum) +-- Forum: Lift Maintenance & Electrical (/forumdisplay.php?fid=1) +--- Forum: ANSI B77 (/forumdisplay.php?fid=61) +--- Thread: Outline of ANSI B-77 Aerial Tramway Standards (/showthread.php?tid=109)

Outline of ANSI B-77 Aerial Tramway Standards - Admin - 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.