Document 9nEn6vdkgjvMjggRe7VoGG9e

American Society of Heating. and .Ventilating Engineers Guide 1931: bend composed of several of the smaller curved pieces illustrated in p(3) a combination of straight pieces with such curved pieces or cast^'" (4) a so-called square bend made up entirely of straight pieces, cast ells In designing any system of steam or hot water piping the exna' for each straight run should be calculated and allowed for. V 0s" All risers must be anchored and safeguarded so that the differen ! length when hot from the length when cold shall not disarrange ti? normal and orderly provisions for drainage of the branches. 8^ It is especially necessary with light-weight radiators so to anchor a so to give freedom for expansion of the piping that no strain therefrn - shall be allowed to distort the radiators. When expansion strains fro* the pipes are permitted to reach these light metal heaters they usuaA emit sounds of distress which are exceedingly troublesome. ^ Table .3. Dimensions of Elbows, 45 Deg. Elbows, Tees, and Crosses (Straight^ Sizes) for 125 Lb. Cast Iron Screwed Fittings 1 <?, Elbow 4S"ELBOW A Nominal Pipe Size Ceutee to End, Elbows, Tees and Chosses c B E. Centeb to End/ 45 Deg. Elbows Length op Thread Min. Width op Band, Min. F Inside Diameter op Fitting Min. Max. \ GH Metal Thickness, Min. Outbids Diameteb op Bind, Vt Vs A % l v/i m 2 2A 3 sA 4 5 6 8 10 12 14 O.D. 16 O.D. 0.81 0.95 1.12 1.31 1.50 1.75 1.94 2.25 2.70 3.08 3.42 3.79 4.50 5.13 6.56 8.08 9.50 10.40 11.82 0.73 .0.80 0.88 0.98 1.12 1.29 1.43 1.68 1.95 2.17 2.39 2.61 3.05 3.46 4.28 5.16 5.97 Ail dimensions given in inches. 0.32 0.36 0.43 0.50 0.58 0.67 0.70 0.75 6.92 0.98 1.03 1.08 1.18 1.28 .1.47 1.68 1.88 2.00 2.20 0.38 0.44 0.50 0.56 0.62 TO.69 0.75 0.84 0.94 ; 1.00 1.06 1.12 1.18 1.28 . 1.47 1.68 1.88 2.00 2.20 0.540 0.584 0.675 0.719 0.840 0.897 1.050 1.107 1.315 1.385 1.660 1.730 1.900 1.970 2.375 2.445 2.875 2.975 3.500 3.600 4.000 4.100 4.500 4.600 5.563 5.663 6.625 6.725 8.625 8.725 10.750 10.850 12.750 12.850 14.000 14.100 16.000 16.100 0.110 0.120 0.130 0.155 0.170 0.185 0.200 0.220 0.240 0.260 0.280 0.310 0.380 0.430 0.550 0.690 0.800 0.880 1.000 ; 324 0.93 1.12 1.34 1.63 1.95 2.39 2:68 3.28 -3.86 4.62 5.20 5.79 7.05 8.28 10.63 13.12 15.47 16.94 19.30 ' Chapter 21~Pipe, Fittings and Valves agHIlsplr;. . r r joining the sepa' rFaItTeTleINngGtShs o. f p ipe together are made .in a forms, and are either screwed or flanged; the former being used for the smaller sizes of pipe up to and including 334 in., I tter for the larger sizes, 4 in. and above. Screwed fittings of mSP&l? a,,,, as flanged fittings of small size are also made and are i^fCrmcaetertraiainl ucslaesdsefos roffitwtinogrksaist gtheeneprraolplyecr apsret sirsounre, .but in addition to malleable iron, steel and steel alloys are also used, as well as various :on, a--- Dimensions of "T"ee--s and GCrosses (Straight Sizes) for Table 4. 125 Lb. Cast Iron Flanged Fittings h-Ar-1 ` -- k V* cross . SIDE OUTLET TEE AA Fact to Fao I 1H VA 2 2'A 3 3H 4 5 6 8 . . 10 12 14 O.D. 16 O.D. 18 O.D. 20 O.D. 24 O.D. 30 O.D. 36 O.D. 42 O.D. 48 O.D. Me Vi Me Vi We % 13AV 'H 6 'He 1 IH IMe lH m iMe lMe l'He VA 2M 2Vs, 2% 2M hASTilezledsio,msfeiadnelsl oifoiutnttsiineggtitsveeelinsst,ienadninidncdhcriecosas.stee: s, n1o6minin. alnidn-ssidmeadlleiar,mredteurcoinfgpoonrtt.he outlet, have the same dimensions center to face, and face to face as straight size fittings, corresponding to the size of the larger opening. Sires 18 in. and larger, reducing on the outlet.are made In two lengths, depending on the size of the outlet. ` Tees and crosses, reducing on run only, carry same dimensions center to face and face to face as astraight dze fitting of the larger opening, '*. 325