Tower work platforms shall be installed on all towers of above-surface ropeways to facilitate access to sheave assemblies. These platforms shall be located parallel to the tower head. Note: Grandfathered. The safe working load be posted on each platform. Each platform be equipped with a guard whose top is at least 1070 mm above the platform and which is capable of withstanding the following minimum specified loads: a horizontal concentrated load of 1.0 kN applied inward or outward at any point; a vertical load at the top of 1.5 kN; and if the guard is used as an anchor point, the loads specified in Clause 4.18.5.4. The loads specified in Items (a) to (c) need not be considered to act simultaneously. Anchor points shall be provided for attaching a personal safety body harness at each tower head. Each anchor point shall have an ultimate load capacity of at least 22.2 kN in any direction to resist a fall. Rope height adjustment When towers and/or stations are designed to permit variations in rope height, sheave assembly supports shall be guided or attached in a manner that prevents misalignment. When the heights of sheaves are to be varied to suit varying profiles, allowance for this be made in the design. Towers and stations shall be marked to ensure that, when adjusted, the new profile conforms to the design. Line sheaves and sheave assemblies Haul rope deflection The deflection of the haul rope shall not exceed 4°30’ on any one sheave, except where the sheave diameter complies with Clause 4.21.2.
Tower work platforms shall be installed on all towers of above-surface ropeways to facilitate access to sheave assemblies. These platforms shall be located parallel to the tower head. Note: Grandfathered. The safe working load be posted on each platform. Each platform be equipped with a guard whose top is at least 1070 mm above the platform and which is capable of withstanding the following minimum specified loads: a horizontal concentrated load of 1.0 kN applied inward or outward at any point; a vertical load at the top of 1.5 kN; and if the guard is used as an anchor point, the loads specified in Clause 4.18.5.4. The loads specified in Items (a) to (c) need not be considered to act simultaneously. Anchor points shall be provided for attaching a personal safety body harness at each tower head. Each anchor point shall have an ultimate load capacity of at least 22.2 kN in any direction to resist a fall. Rope height adjustment When towers and/or stations are designed to permit variations in rope height, sheave assembly supports shall be guided or attached in a manner that prevents misalignment. When the heights of sheaves are to be varied to suit varying profiles, allowance for this be made in the design. Towers and stations shall be marked to ensure that, when adjusted, the new profile conforms to the design. Line sheaves and sheave assemblies Haul rope deflection The deflection of the haul rope shall not exceed 4°30’ on any one sheave, except where the sheave diameter complies with Clause 4.21.2.
Passenger%20Ropeways%20and%20Ski%20Conveyor%20Guidelines%20-%20Final%20Draft%20-%2016%20May%202011.docx