Is the upper loop is to be connected to the lower loop as a continuous loop? If so consider, consider the angle of upgrade (inclination) and the angle of downgrade(declination), usually recommended (2-3) degrees for both the upgrade and downgrade. The length of the upgrade and downgrade if established by the rise or height of the loop elevation and the angle(2-3) degrees. The length of upgrade or downgrade ramp can be a substantial. I used the trigonometric functions for a right triangle with an angle(rise/decline of 2.5 degrees) for different elevation heights. Given this angle, the lengths of the inclination/declination ramp from the lower track was established. Referring to a right triangle the rise is your elevation height, the run (base) of the right triangle is the length of ramp base. If you are not familiar with the trigonometric solution of a right angle go to www. omnicalculator.com on the web this will clarify any questions.
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