STEP 6: Divide length and psi to obtain psi for 1,000 feet.
STEP 7: Utilizing information from step #5 and step #6 to obtain the psi per 1,000 feet.
(Step #5, results)
(Step #6, results)
19.6 (divided by) 4 = 4.9 psi for 1,000 feet.
Substitution:
QM5200
15-12