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462 CHAPTER 31 1960 Guide Table 19 .... Dimensions of Hanged Cast-Iron and Steel Valves Notes for Table 19 Fran American Standard Jar Foct-to-Fac* mt Bni-to-Bod Otwnnflin of Farma Valres, ASA B16-HM557. All dimescioos jiTen is ioebeo. Wtero 4iMiniu in cot giveo, the sizes either ere not made or ttaere b inaaSxaeat ******* to vsmitt the expose cd naificatian. Female end fioora joint (aaats baw bottom at coot* is one {dene as figrtgr *dgt, and center to contset surface flimmsiocs tbeoe tadap Are redaccd by the 'tmwbi of the railed face. Tbweare peeasme designation! which refer to the primary aerrice ratings in lb per eg in. of the connecting end flange*. b Xbe connecting end fiance* of 17S lb valves are the same as tbeoe on 2S0 lb valve*. * The contactsurface tocontact surface drmmrinroaBd conncrtirtf end fiancee tor 400 lb valves I in. aba and mealier, are identical with tbose at GOQ lb valvce; tml the contact tnrfaoe to contact surface AimmImm and connectingend fiancee tor BOO lb valves in. rise and smaller, are identical with tfaoee of IfiOO tb valves. Table 20 .... Thermal Stresses Dye to Total Constraint Contact Ssrfoct to Contact Surfocs OiMaaom, (2 X AA) Nomina/ Hfm Sin Cast bon St1 800* 129 75*-b 250* Hrdraa- 150* 300* 400* 600* 900* Bc 0 0 *8* 8* 10 9 9 *11 7* 9* 9* *12 10 11 12 2 7 7* 8* U* 7 8* 11* 11* 14* 14* 2* 7H 8 9* 13 7* 9* *13 13 16* 16* 3 8 X 11* 14 8 11* *14 14 15 18* > 3* i > 4 m 10 11* 9 io* 12 17 8* 11* 9 12 16 17 18 21* Ht- 5 10 ii* 15 10 15 18 20 22 26* o 6 , 10* 13 is* 22 10* 15* 19* 122 24 wh n8 n* 14* 10* 28 11* 16* 23* 26 29 32* a 10 13 16* IS 31 13 18 26* 31 33 39 12 14 17* 19* 33 14 19* 30 33 38 44* 14 OD 15 22* 15 30 32* 35 40* 16 OD 16 24 16 33 35* 39 44* 18 OD 17 26 17 36 38* 43 48 20 OD 18 28 18 39 41* 47 52 24 OD 20 31 20 45 48* 55 61 = == ---- = ---- =1 === * H 1 P IK ta IK > 2 0 2* <3 * 3* n4 s o 5 6 8 8 8* 9* toK n* 13 14 19* 10* 11* 12* 13* 14 15* 17* 21 7* 8* X 10 9 9 11 m 9X 12 10 11 12 8 10* 8* 11* 9* 12* 10* m 11* 14 11* 11* 13 13 14 14 16 17 14* 14* 16* 16* 15 18* 18 21* 14 15* 18 20 16 17* 19* 22 19* 22 23* 26 22 26* 24 27* 29 32* Temperature* Change, f Oeg Steel Jboaoel Stroms, Pa Wrought Cast Bran or bronze Copper Aluminum 20 3900- 3800 1428 2760 2980 2700 40 7800 7600 2856 5520 5960 5400 60 11700 11400 4284 8280 8940 8100 80 15600 15200 5712 11040 11920 10800 100 19500 19000 7140 13800 14900 13500 * For temperature* between S2 and 400 F. Table 21 ... Physical Properties for Determining Thermal Stress (Temperature! between 92 and 400 Fl Steel Wrought Iran Braes or Cop Broaza per Coefficient of Linear Expansion, a X 10*... 6.5 Modulus of Elasticity, B, psi X 10"*................ 30 Product of aE, psi.......... 195 6.8 28 190 5.95 9.85 9.3 13.5 12 14 71.4 138 16 10 149 135 BrowfU: Tb* coefficient of expansion for steel " 0.0000065 inVin. and the modulus of elasticity 30,000,000 pn. Tbeiefoce tsB 1IS pci. Table 22 .... Equations for Bending Stress and Deflection between Supports Typo of Support Bending Sfron, Pd 5 Deflection, Indies Y Single span (free ends).......................... _ 0.75 WL*D. S - --------y-------` Continuous line......... s ~ 1 22.5 WL* y~ EI 4.5 WL* EI W b total weight (pipe, fluid, etc.) pounds per foot. Dt TM outside diameter of pipe, inches. L * length of span, feet. E * modulus of elasticity, pounds per square inch. 1 -- moment of inertia, (inches)4. 7 - [>-*>*] Di -- inside diameter of pipe, inches. _______________ _ Pipe, Fittings, Welding 463 Table 23 .... Application of Pipe, Tube, and Fittings for Heating and Air Conditioning Application Materials Commonly Hied Application Materiaft Commonly l/sed Chilled water Type E or L hard copper, wrought iron, or black steel. Schedule 40 Hot water heating* Type K or L hard copper, black steel, or wrought iron. Schedule 40 Cooling tower Type K or L hard copper, wrought iron, or black steel, Schedule 40 Refrigerant* Type K or L hard copper, wrought iron or black steel. Schedule 40 Underground water 2-in. and smaller 2*-in. and larger Type K soft copper, galvan ised wrought iron, or gal vanized steel, Schedule 40 (for corrosive soils, a coated steel pipe should be used) Type K, soft copper cast iron. Class ' 150, galvanized wrought iron, or galvanized steel, Schedule 40 (for cor rosive soils, a coated steel pipe should be used Steam heating Supply 125 psi and less 125 to 250 psi Return pipe All sizes Type L hard copper, black steel, Schedule 40, standard fittings Type K hard copper, black steel. Schedule 40. For fit tings see Table 8 Type K or L hard copper, black wrought iron or steel, Schedule 40. Standard fit tings City water--inside building Type K or L hard copper, gal vanized wrought iron, or galvanized steel, Schedule 40 Receiver vent All sizes Copper drainage tube DWV, galvanized wrought Iron or steel, Schedule 40. Standard fittings Underground rain water con ductors Small installations Vitrified clay or cast-iron soil Under paved areas Large installations 8-in. and smaller Vitrified clay or cast-iron soil Cast-iron soilXH or vitrified clay 10 to 24-in. Vitrified clay or concrete 30-in. and larger Vitrified clay or concrete 5 feet outside bldg, and Cast-iron soil XH or vitrified under paving clay Interior rain water conduc tors Small installations Copper drainage tube DWV, black or galvanized wrought iron or steel Schedule 40 Sanitary4 * Small installations Waste: l*-in. and smaller 2-in. and larger Vents: % 2*-in. and smaller 3-in. and larger Large installations Waste: 2-in. and larger Copper drainage tube DWV, galvanized wrought Iron or steel, Schedule 40 Cast iron, copper drainage tube DWV, galvanized steel, Schedule 40, or vitrified clay Copper drainage tube DWV, galvanised wrought iron or steel, Schedule 40 Cast iron, copper drainage tube DWV, or galvanized steel, Schedule 40 Cast iron, galvanized steel, Schedule 40, copper drain age tube DWV or vitrified Large installations .Copper drainage tube DWV, cast-iron soil XH, black or galvanized wrought iron or steel, Schedule 40 Vents: 2-in. and larger Cast iron, galvanized steel, Schedule 40, or copper drain age tube DWV Panel heating* .Type K or L hard or soft cop per, black steel or wrought iron, Schedule 40 Gas (all kinds) All sizes Black steel, Schedule 40, mal leable iron fittings * Panel Vatins capper fitting* iboold be soldered with M~5 solder. Steel fittings should be welded. b All u&dexgiound feed and return lines burled In slab, should be equipped with fittings as outlined for panel x-n-g * Refrigerant fitting* on copper pipe must be wrought copper. All welded fittings should be long turn. 4 Hons sewer to main should be cast iron XH. * Materials must comply with local plumhung codes. the fluid being carried. There is also the bending moment that may be caused by the flexure of the pipe. For this chap ter, however, the flexure loading will not be treated for the reason of complexity, as previously stated for the problem of expansion. Since hangers should always be designed to take the bend ing moment (including buckling) from the pipe, it is neces sary to design the hangers or supports for the maximum bending stress. Even with perfect support spacing there will be some sagging; therefore, the supports should be on a gradient if it is necessary to prevent pockets. Such a condi tion arises for condensate piping. Typical bending and deflection equations are given in Table 22 in order that supports can be properly sized, and if neces sary, pitched. These equations are typical beam equations. If more complex loadings exist, proper beam equations can be applied. Such equations are found in standard texts on mechanics of materials.