| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-cable wiring method from a lifting duct, in which the impossibility of laying into the lifting duct of a rope for traction due to dirt or the like in the lifting duct is prevented and multi-cable wirings are conducted to the lifting duct, without stopping the application of the service of an existing cable giving service. SOLUTION: When a first cable is laid in the lifting duct, the rope for traction is laid and left in the lifting duct, No.2 and subsequent cables are pulled by using the rope for traction left in the lifting duct, when the cables are laid, the next rope for traction is installed to the cable to be pulled and the cable is pulled, and the rope for traction is left in the lifting duct at all times. |
