Construction elevator and method of extending compensating rope for construction elevator

A method of extending a compensating rope of a construction elevator including:

• a compensating-rope reel around which a compensating rope is wound;
• a rising/lowering unit around which the compensating rope drawn out from the compensating-rope reel is wound, the rising/lowering unit being configured to rise and lower in a hoistway of a building structure;
• a pulley that is disposed between the compensating-rope reel and the rising/ lowering unit along the compensating rope and around which the compensating rope drawn out from the compensating-rope reel is wound;
• a first rope-gripping device that releasably grips the compensating rope on a side of the compensating-rope reel with respect to the pulley;
• and a second rope-gripping device that releasably grips the compensating rope on a side of the rising/lowering unit with respect to the pulley, the method comprising:
• a step of gripping the compensating rope by the second rope-gripping device;
• a step of releasing gripping of the compensating rope by the first rope-gripping device, raising the pulley to a predetermined height along a rising/lowering direction of the rising/lowering unit, and drawing out the compensating rope from the compensating-rope reel;
• a step of, after raising the pulley to the predetermined height, gripping the compensating rope by the first rope-gripping device and releasing gripping of the compensating rope by the second rope-gripping device;
• and
• a step of raising a machine room unit provided with the second rope-gripping device to a predetermined height.