American Society of Heating and Ventilating Engineers Guide, 1932 Dustless Coal The practice of treating the more friable coals to allay the dust they create is increasing.

American Society of Heating and Ventilating Engineers Guide, 1932 F ig. 2.

American Society of Heating and Ventilating Engineers Guide, 1932- is divided into a nurhber of equal portions, each of which is called a degree.

American Society of Heating . and Ventilating Engineers Guide, 1932 1928 Presidents,:A.

American Society of Heating and Ventilating Engineers Guide, 1934 Table 1.

American Society of Heating and Ventilating Engineers Guide, 1934 Thus the two whistles made a noise 10 logI0 2 = 3 db louder than one whistle and the ten whistles 10 log10 10 = 10 db louder than one.

American Society of Heating and Ventilating Engineers Guide, 1934 flow.

American Society o/ Heating, and Ventilating Engineers Guide, 1934.

American Society of Heating and Ventilating Engineers Guide, 1934 HEATH, William R.

American Society of Heating and Ventilating Engineers Guide, 1934 MAGINN, Peter F.

American Society of Heating and Ventilating Engineers Guide~193j are desirable to provide a factor of safety and to allow for- more circulation for summer cooling; raP*d For additional information on fans and motors, see Chapter 17 NOISE ELIMINATION Special attention must be given to the problem of noise elimination The fan housing must not be directly connected with metal, either to the furnace casing dr to the return air piping.

American Society of Heating and Ventilating Engineers Guide, 1935 creasing amounts of oils and tars are given up.

American Society of Heating and Ventilating Engineers Guide, 1935 main heaters at the fan location, booster heaters may be located in branch ducts.

American Society of Heating and Ventilating Engineers Guide, 1935 SKINNER, Henry W.

Plaster (H in-) onwalla j Plaster on wood lath--furred Plaster in.) on rigid insulation (1 in.)