668 CHAPTER 28 1956 Guide data on commonly used forms of'tunnels aiid conduit systems, have been published by the National District Heating Association.s ; Another form of underground insulation consists of the direct burial of the pipe in a trench with a complete covering of about 4 in. of a granular bitumen which', upon heating, forms a semiplastic, waterproof covering having a very good insulating value.

To Be Made Effective: July 29,1957 Merchandise Bulletin 2601-87 TO: All Salesmen Southwestern Region - Pipe Division PLAINTIFF'S EXHIBIT JMMC-281 Ring-Tite & Fluid-Tite Couplings Some of you have reported that representatives of Keasbey & Mattison and their distributors have been advising customers in your territory that the Fluid-Tite Coupling has a greater wall thickness than our Ring-Tite Coupling.

1156 CHAPTER 52 1956 Guide ducts where the air flow is not seriously altered by the presence of the instrument itself.

868 CHAPTER 34 1957 Guide; ' of small drops over the filling and across the air stream with less resistance to air flow.

952 CHAPTER 38 1957 Guide or remotely on a panel or wall.

i: I !!

122 CHAPTER 6 1958 GuidgJ EFFECTIVE TEMPERATURE INDEX AND COMFORT ZONES :V There is no precise physiologic observation by which comfort can be-; evaluated.

680 CHAPTER 26 1958 Guide Table 6.

818 CHAPTER 31 1958 Guide Table 10.

922 CHAPTER 36 1958 Guide handled.

1242 CHAPTER 52 1958 Guide cated or recorded on conveniently located instruments; average tempera ture may be readily obtained by connecting several couples in parallel or in series; and temperatures may be obtained within thin materials,'narrow spaces, or otherwise inaccessible locations.

Heating Ventilation (.continued) rules, 146 ship. 666 symbols for drawings, 9 tanks, 709 walls, 137 wind forces, 139 Ventilator, ventilators, 145 control, 146 roof, 145 unit, 213 control, 215 Vertical blow unit heater, 218 Vertical openings, 143, 145 sealing of, 143 Vibration, machine, 352 Viscous filters, 324 impingement, 324 Vitiation of air, 61 Volume control, 278 furnace, 487, 490 specific, 6 W Wall, walls heat flow through, 102-109, 178, 195 heat transfer coefficients, 47, 102-109 infiltration through, 139 time lag of solar radiation, 191 Warm air gravity heating system, 6, 258 mechanical (forced) systems, 237 air distribution, 237 automatic control, 253, 625 ceiling panel system, 254 cooling methods. 651 continuous circulation, 253 dampen, 239 design procedure, 240, 250 ducts, 239 fans, 509 filtem, 509 furaaoe, 509 heavy duty, 510 selection, 253 humidification, 512 large systems, 250 perimeter system, 240-247 pressure drop, 257 panel heating, 254 registers and grilles, 237 Ventilating Air Conditioning Washer, washers, 592 air, 1, 592-594 cooling, 594 dehumidification,' 594 humidification, 594 Water analysis, 734 atmospheric cooling equipment, 579-581 characteristics,- 733 classification, 733 coils, 314, 758 content of radiators, 404 control temperature service, 760 cooled condenser, 556 cooling tower, 581 corrosion treatment, 735-743 demand, 748, 753-755 faucets, 747 fittings, loss, 752, 753 fixtures, 748 fixture units, 748 formed deposits, 733 heater coal-fired, 755 electric, 756 indirect, 757 solar, 760 heating, 753, 755 in building material, 128 load, 747 make-up, 688, 738 maximum main temperature, 595 meters, 752 mineralised, 734 properties of, 22, 734 services, 747 storage capacity, 753 supply piping, 760 arrangement, 758 temperature control, 759 thermodynamic properties of, 22 treating chemicals, 733, 744 well temperatures, 596 * Water vapor, 13, 18-21. 127 condensation in buildings, 127 saturation pressure, 13, 22 specific enthalpy, 2 specific volume, 6, 22 surface condensation, 132 Weather conditions design outdoor, 151, 168 Guide 1959 Welding, 443 * ^iure) sTmJwT Wet cup, 130 Wet return, 5, 355 Wind, winds forces, 139, 143 due to stack effect/139. natural draft equipment, 515 selection of, velocity, 152, 170 Window, windows coefficients of transmission, 123 . leakage, 140 solar radiation through, 184 Winter air conditioning system, 259, 651 comfort chart, 67,. 70 freezing equipment, 589 Wound rotor motor, 641 Wrought-iron pipe, 435 Wrought-5teel pipe, 435 Y Year-roand air-conditioning system, 259, 651 air flow in, 261, 654 control methods, 260, 619-623, 625 design procedure, 259, 265, 651 equipment arrangement, 266 installation, 259, 651 location of apparatus, 266, 653 residential, 977 selection, 265, 651 Z Zero, absolute, 1 Zone, zones control, 260, 618, 623, 624 evaporative regulation, 63 metabolic regulation, 63 thermal neutrality, 67 vaso-motor regulation, 63 Zoning, 260, 618, 623 , control, 260, 618, 623 hot water system, 623 reheat, 280 volume control, 260 XXiv CHAPTER TERMINOLOGY Glossary of Physical and Heating, Ventilating, Refrigerating and Air Conditioning Terms Used in the Text Absolute Zero: The sero from which absolute temperature is reckoned.

278 CHAPTER 20 1959 Guide the duct, and perpendicular to the outlet face.

302 CHAPTER 21 1959 Guide 17 R.

434 CHAPTER 30 1959.