Document 33m80j76zXErva5wj0djKpVD

16 1 atmosphere CHAPTER 2 !' 1954 Guide -14 .696 lb per square inch 2116 lb per square foot 33.94 ft water at 62 F 30.01 in. mercury at 62 F l 29.921 in. mercury at 32 F 1 in., water at 62 F (in vacuo) 0.03609 lb per square inch 0.5774 oz per square inch 5.197 lb per square foot 1 ft. water at 62 F (in vacuo) f 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 Bq 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 lib 1 metric ton 1 gram 1 kilometer per hour 1 gram per square centimeter 0.3937 in. = 0.0328 ft 2.540 cm 3.281 ft 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) = 0.4536 kg = 2205 lb (avdp) = 0.002205 lb (avdp) = 0.6214 mph _ / 0.02905 in..mercury at 62 F -- ^ 0.3942 in. water at 62 F 1 kg per sq cm (metric atmosphere) 1 gram per cubic centimeter = 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 0.7376 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 = 1.8 Btu per pound = 3.687 Btu per square foot 1 I.T. calorie per (second) (square centi meter) for a temperature gradient of 1 deg per centimeter C = ( ] l 2903 BTU per (hour) (square foot) for a temperature gradient of 1 F deg per inch of thickness. Abbreviations and Symbols 17 GRAPHICAL SYMBOLS FOR DRAWINGS' Graphical Symbols for Drawings Heating Piping 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 -FOF--FOR-- --FOV-- 16. Hot Water Heating Supply 17. Hot Water Heating Return Air 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 -----------------rd----------------- --:------- rs----------- --------------------- --C--------------------------- -----------------------CR----------------------- -- -- CH H-D- 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 '' --------------------------------------------------------------------- -- ----------------------- f---------------- e------------ -A22------------------------------------ .-----V-----------------a-- Sprinklers 42. Main Supplies 43. Branch and Head 44. Drain Extracted from: American Standard Graphical Symbols for Pipe Fittings, Valves, and Piping (ASA 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 of Mechanical Engineer?, 29 West 39tb St.. New York 18, N. Y.