The calculation procedure provides you to enter the following parameters for the calculation of productivity and work time.
Parameters:
•  Timber volume: sampling, expressed in m3, you can choose values between 10 and 300 (with intervals of 10 units). 
•  Number of log segments for tree: it is a parameter that requires particular attention because it depends on the calculation of the average load per trip, you can choose values between 1 and 10 (with intervals of one unit). 
•  Number of survey of longitudinal profile: you can choose values between 1 and 10 (with intervals of one unit). 
•  Number of transfer with moving of the winch: you can choose values between 1 and 10 (with intervals of one unit). 
•  Number of transfer without moving with the winch: you can choose values between 1 and 10 (with intervals of one unit). 
•  Number of cable lines: you can choose values between 1 and 10 (with intervals of one unit). 
•  Cable line length: you can choose values between 50 and 1200 (with intervals of 50 units). 
•  Number of vertical poles at Both Ends: you can choose values between 1 and 10 (with intervals of one unit). 
•  Number of poles along the vertical line: you can choose values between 1 and 10 (with intervals of one unit). 
•  Number of cable lines to trace: you can choose values between 1 and 10 (with intervals of one unit). 
•  Average tree volume: expressed in m3, you can choose values between 1 and 10 (with intervals of one unit). 
•  Number of people in the forestry team, you can choose values between 1 and 10 (with intervals of one unit). 
•  Number of cable crane extensions, this data should be entered only if, you must have multiple lines and then there is a need to extend the suspension cable using junction with another rope; in the box you must shown how many times is necessary to do this operation; you can choose between 1 and 13 (with intervals of one unit). 
The possibility to calculate productivity and time to work through the button is activated only when all required parameters are entered. If not shown on screen, the data is missing and then you could insert them.
The results are exposed both as a productivity and unit labor time as the overall time for design, installation (mounting and dismounting of the line) and extracting.
