Document p2kJ9wraKMVLVDDJeod1gyy46

16 1 atmosphere i in. water at 62 K (in vacuo) CHAPTER 2 1955 Guide ' 14:696 lb per square inch 2116 lb per square foot 1 33.94 ft water at 62 F 30.01 in. mercury at'62 F 29.921 in. mercury at 32 F f 0.03609 lb per Bquare inch = ! 0.5774 oz per square inch ( 5.197 lb per square foot 1 ft. water at 62 F (in vacuo) J 0.4330 lb per square inch ~ \ 62.37 lb per square foot 1 in. mercury at 62 F (in vacuo) { 0.4897 lb per square inch 7.835 oz per square inch 1.131 ft water at 62 F 13.57 in. water at 62 F 1 in. mercury at 32 F (in vacuo) = 0.49115 lb per square inch Metric Units 1 cm 1 in. 1m 1 ft 1 sq cm 1 sq in. 1 sq m 1 sq ft 1 cu cm 1 cu in. 1 cu m 1 cu ft 1 liter 1 kg 1 lb 1 metric ton 1 gram 1 kilometer per hour 1 gram per square centimeter 1 kg per sq cm (metric atmosphere) 1 gram per cubic centimeter 0.3937 in. = 0.0328 ft 2.540 cm 3.281ft 0.3048 m 0.1550 sq in. 6.452 sq cm 10.76 sq ft 0.09290 sq m 0.06102 cu in. 16.39 cu cm = 35.31 cu ft = 0.02832 cu m = 1000 cu cm = 0.2642 gal = 2.205 lb (avdp) i 0.4536 kg = 2205 lb (avdp) " 0.002205 lb (avdp) = 0.6214 iiiph 0.02905 in. mercury at 62 F -( 0.3942 in. water at 62 F = 14.22 lb per square inch -{ 0.03613 lb per cubic inch 62.43 lb per cubic foot 1 dyne 1 absolute joule = 0.00007233 poundals _ / 10,000,000 ergs - \ 0..77376 ft-lb 1 Int. joule 1 metric horsepower 0.7378 ft-lb 75 kg-m per second -{ 0.986 hp (U. S.) 1 I.T. kilocalorie per kilogram 1 I.T. calorie per square centimeter. 1 I.T. calorie per (second) (square centi meter) for a temperature gradient of 1 C deg per centimeter 1.8 Btu per pound 3.687 Btu per square;foot ( 2903 BTU per (hour) (square foot) | lor,.a-.temperature gradient of 1 F (''deg-per inch of thickness. Abbreviations and Symbols 17 GRAPHICAL SYMBOLS FOR DRAWINGS8 Graphical Symbols for Drawings Piping Heating 1. High Pressure Steam . 2. Medium Pressure Steam 3. Low Pressure Steam 4. High Pressure Return 5. Medium Pressure Return 6. Low Pressure Return 7. Boiler Blow Off 8. Condensate or Vacuum Pump Discharge 9. Feedwater Pump Discharge . 10. Make-Up Water 11. Air Relief Line 12. Fuel Oil Flow 13. Fuel Oil Return 14. Fuel Oil Tank Vent 15. Compressed Air 16! Hot Water Heating Supply 17. Hot Water Heating Return FO F ----------------A---------:------ Aib Conditioning 18. Refrigerant Discharge ...... 19. Refrigerant Suction 20. Condenser Water Flow 21. Condenser Water Return 22. Circulating Chilled or Hot Water Flow ^23. Circulating Chilled or Hot Water Return 24. Make-Up Water 25. Humidification Line 26. Drain 27. Brine Supply 28. Brine Return ......... =.....no---------------- :-------RS-------------------c--------------- -- ------- cr-------------------------ch------------------------- chr------------- ------ --------- ------------------------h--------------_________ p. . - -- ---------------a-- -------- -- ---------- or-------- ---- Plumbing 29. Soil, Waste or Leader (Above Grade) 30. Soil, Waste or Leader (Below Grade) 31. Vent ` 32. Cold Water 33. Hot Water 34. Hot Water Return ......... ... 35. Fire Line 36. Gas 37! Acid Waste ----- 38. Drinking Water Flow 39. .Drinking Water Return 40. Vacuum Cleaning 41. Compressed Air ----------------- --------------------.----- ----------------- ---------------- .......... ^1 ------r----------- . _ . ----g----;--^ ------------------; ----------------- ----v------------------------ A-- Sprinklers 42. Main Supplies. 43. Branch and Head 44. Drain * Extracted from: American Standard Graphical Symbols for Pipe Fittings, Valves, and Piping CASA Z32.2.3-1949) and American Standard Graphical Symbols for Heating, Ventilating, and Air Conditioning (ASA Z32.2.4-1949) with the permission of the publisher. The American Society o! Mechanical Engineers, 29 West 39th St.. New York 18, N. Y.