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Left click to select the 2 pipes shown below, then click Delete on your keyboard and press Ok to the warning message to delete these 2 pipes.
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Left click to select joints as shown and press the I key on your keyboard followed by Q or click Pipe Object type, select your desired Pipe property set, use Insert type 'Offset' and type 12 ft. in the Y direction and click Apply.
The two end joints should by default be selected, so Insert a pipe 8 ft. in the X direction using the same Offset Insert type and click Apply button.
Insert pipe -12 ft. in Y direction using Offset Insert type to complete the loops by clicking OK
