Copyright Goodheart-Willcox Co., Inc. May not be reproduced or posted to a publicly accessible website.. 92 Math for HVACR 92 Exercise 5-2 This exercise requires the use of a ruler with 1/16 inch increments. Using the drawings for th Offi of Nicholas Brent, MD, answer the following fices questions by measuring the piping and converting the measurement to actual size. Follow the scale shown on the drawing for the conversion. Round all scaled lengths to the closest inch. Measure the piping lengths based on the following guidelines: ▪ Measure to the center of vertical pipe risers. ▪ Measure to the point where the pipe connects to a piece of equipment (that is, boiler, unit heater, or fi n-tube radiation unit). ▪ Ignore ball valves a and flow arrows when measuring piping lengths. p g ▪ As noted on the drawing, vertical pipe risers are 12″ long. 1. How much copper piping will be required for heating system Zone 1? __________ feet __________ inches 2. How much copper piping will be required for heating system Zone 2? __________ feet __________ inches 3. How much copper pip ng will be required for heating system Zone 3? __________ feet __________ inches 4. How much copper piping will be required for heating system Zone 4? __________ feet __________ inches 5. Adding together all four zones, how many total feet of pipe will be required for this installation? Round your answer to the next highest foot. __________ feet 6. The pipe for the heating system can only be purchased in 20′ lengths. How many lengths of pipe will be required for this job? __________