438 CHAPTER 17 1952 Guide -The year under consideration may then be compared, month by month, with the previous year.

580 CHAPTER 25 1952 Guide /' units,. usjng;a sealing compound if necessary to prevent air leakage into the fanfseetion of the unit.

126 CHAPTER 6 1953 Guide measurable, degree the optimum conditions for comfort previously in dicated.

300 CHAPTER 13 1953 Guide cooling equipment is not sufficient to build up the required pressure to offset infiltration, the entire infiltration load'should be included in the cooling load calculations.

416 CHAPTER 17 1953; Guide AVAILABLE DRAFT FOR THE RESIDENTIAL CHIMNEY Equations 3 and 4 cannot readily be used for computing the available draft'for residential chimneys because'of the relatively,greater importance of friction losses, cooling of.the gases, and soot deposits in small chimneys.

488 CHAPTER 21 1953 Guide Thte .control'valve may be of the automatic, modulating or floating: type governed thermostatically from selected control.points in the building;-or it'may.be.a^special pressure.reducing valve; which will maintain the desired sub-atmospheric pressures by continuous flow into the heating, main.

524' CHAPTER 22 1953 Guide Table 2.

Air Hygiene Foundation of America, Inc 4400 Fifth Avenue, Pittsburgh, Pa.

HHBB-Bim503 Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL decisions and trends JUNE, 1952 (VoL 16, No. 6) INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 FIFTH AVENUE PITTSBURGH 13.

1046 CHAPTER 49 1953 Guide Table 1.

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56 CHAPTER 3 1954.

m170 CHAPTER 9 1954 Guide Table 1.

198 CHAPTER 9 1954 Guide flow leads to surface conductances averaging about 1.50 for block and vertical glass, and about 1.80 for horizontal glass, as compared to the value of 1.65 used in computing U values given in other tables in this chapter.