ANSI B77.1 PDF

ANSI B Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors – Safety Standard. Buy ANSI B Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows And Conveyors – Safety Standard from SAI Global. Buy ANSI B Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows And Conveyors – Safety Requirements from SAI Global.

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Approach paths to the loading platform shall be approximately level or slightly downsloped to facilitate passengers moving to the loading point. With the grip in its operating position gripping the rope or equivalenta downward load, equal to the dead load of the carrier plus 6 times the design live load, shall not cause any part of the grip to fail. 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.

In determining the resistance of the soil to motion of the foundation, the subsoil conditions at the site shall be considered, including any buoyancy due to groundwater that may be present. NOTE — When specifically approved, platter lifts with single passenger hangers do not require either an unloading attendant or television surveillance providing conditions 3 through 6 are enforced and the unloading area of the platter lift meets all manufacturer’s design specifications.

Ropeway Information

No claim to original U. Semi-open carriers shall meet applicable requirements for enclosed cabins and open chairs.

Design of all electronic controls and drives shall consider minimum sensitivity to electrical noise and electrical emissions, such as noise spikes from power lines and lightning, radio transmitters, thyristors SCRor solenoid or ansj noise at levels and frequencies that could initiate loss of control. The drive train shall be so arranged that there is no belt, friction clutch, or similar friction-type device between the backstop device and the drive sheave.

All sheaves, including their mountings and frames, shall be designed to withstand static and dynamic loads. The design coefficient of friction for a particular sheave liner shall not exceed the values shown in table The design shall have a minimum factor of safety of 2 in resisting overturning and, concurrently, 2 against sliding, under dead load and live-load conditions.

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Sheave bearings and mountings shall be selected, designed, and ansii in accordance with the recommendations of the manufacturers of the bearings. The corral and maze b77.1 shall be as straight as possible with gradual turns. The following are department definitions in addition to the definitions in B The communication system shall be functional and audible during operation.

Chair lift carriers shall be designed to support a vertical load 4 times the design load without permanent deformations of the assembly b7.1 component parts. Audio indicators shall be audible over all ambient noise levels, and visual indicators e. Prior to operation of newly installed aerial lifts or after any modification thereafter of the electrical system, the electrical system shall be tested and shown to meet [the requirements of] this [standard] Part and the test results shall be recorded.

The loading area length, profile, and loading point shall be installed according to the aerial lift’s speed, terminal sheave location, and carrier type, such as to minimize carrier swing while loading passengers. Fully enclosed passenger cabins shall be ventilated. The following personnel are the minimum that shall be required:.

Attaching the towing device to the haul rope shall in no way impair the strength of the haul rope. Electrical systems shall comply with ch. A permanently installed two-way voice communication system shall be provided between the prime mover, evacuation power unit control point, machinery areas, loading stations, and unloading stations.

All aerial lifts shall be equipped with at least two power units, one of which, at a minimum, meets the requirements of 4. All carriers shall be uniquely identified with numbers visible to the operator and attendant.

The use of temporary circuits that have been installed for the purpose of bypassing failed electrical circuit s see 4. If a device is permanently installed to cause a brake, rollback, or drive train backstop device to be disabled for testing, it shall be monitored so that the aerial lift cannot be operated in its normal mode when the brakes are so disabled.

When lined sheave grooves are used, the allowable bearing pressures of the liner material shall not be exceeded. All carriers shall be clearly identified with numbers located on each end of each carrier.

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The above regulations for minimum operating personnel may be modified in the following cases:. The lateral tilt of the sheave shall not exceed [2] 1 degrees from the horizontal when in a stationary position, and when the up-going and down-going unloaded carriers are equidistant from the sheave.

Before an aerial lift that is new or relocated or that has not been operated for routine maintenance within the previous 2 years is opened to the public, it shall be given a thorough inspection by [qualified personnel] the Commissioner to verify compliance with the plans and specifications of the designer. All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with the applicable requirements of IEEE C Before a tow that is new or relocated or that has not been operated for routine maintenance within the previous 2 years is opened to the public, it shall be given thorough tests by qualified personnel to verify compliance with the plans and specifications of the designer.

The minimum diameter of terminal sheaves shall be 80 times the nominal diameter of the haul rope. Rules Indices Miscellaneous Archives Home.

Wisconsin Legislature: SPS Note

Please first log in with a verified email before subscribing to alerts. Compliance with this chapter does not relieve the owner from compliance with other administrative rules or statutes. The “as built” documents shall include a procedure, developed by the lift manufacturer or Qualified Engineer, to ensure the security b7.1 the software logic and operating parameters that will control the aerial lift. For chair lifts, the unloading point where the passengers stand up and disembark shall be marked on or near the unloading surface.

The approach path shall be such that waiting passengers have a view of the loading area. Please first verify your email before subscribing to alerts.

Foundations on rock shall be firmly anchored to solid rock, unless designed as gravity foundations.