From lines to rectangles

[DirezioneSviluppo]

Goodmorning everyone, I need a hand to convert a series of lines into rectangles.

I have lines indicating the docks and I would like to create rectangular polygons with the long side equal to the line layers and the short side of 10 m equal for all.

I try to explain myself better with an example: I have a 200 meter line and from this I want to create a rectangular polygon with the long side equal to 200 meter and the short side equal 10. There is a command to do this activity. 

[JakeSkinner]

Hi Direzione,

You could run the Copy Parallel tool for the segments.  You would then have to manually digitize and snap the end points of the parallel lines.  Once they are snapped you could run the Construct Polygons tool.