Document wqxdYzNLwQObXveJG8KBEG154

of andAmerican Society Heating Ventilating Engineers Guide, 1929 13.Table Pipe Sizes for One-Pipe, Gravity, Low Pressure Steam Heating Systems, where Equivalent Length of Run from Boiler or Source of Supply to Farthest Radiator Exceeds 200 Ft. Capacity in Sq. Ft. of Equivalent Radiation Pipe Size Equivalent Length of Pipe from Boileb to Fabtheef Radiatob, Including Main and Risen. (See Note 4-) Supply Main Dripped and Branches to Risers Dripped-- Steam and Condensate flowing in same direction. Based on 4 oz. Total Pressure Drop 100 Ft 200 Ft. 300 Ft. 400 Ft. 500 Ft. 600 Ft. Maximum Capacities Supply Risers Up-Feed Branches to Supply Risers and Radiators Not Dripped Radiator Valves and Vertical Connections i m m 2 2K 3 3X 4 8 10 12 111 24S 380 771 1270 2326 3474 4914 9092 14,924 31,066 56,689 90,985 79 173 269 546 898 1645 2457 3475 6429 10,553 21,967 40,085 64,336 65 141 220 446 734 1342 2006 2828 5250 8618 17,935 32,730 52,530 56 122 190 386 635 1163 1737 2457 4546 7462 *5,533 28,345 45,492 49 110 165 345 568 1040 1552 2196 4062 6669 13,880 25,334 40,660 46 100 155 315 518 948 1419 2011 3712 6094 12,682 23,144 37,145 45 98 152 288 464 799 1144 1520 20 55 81 165 260 475 745 1110 2180 20 55 81 165 Drt Return Main Wet Return Main Pipe Size Inches Equivalent Length of Run from Boiler to Foot of Farthest Riser in Feet Equivalent Length of Run from Boileb to,Foot of Farthest Riser in Feet 100 200 300 400 500 600 100 200 300 400 500 600 K L M N o. P 0 R 5 T u V w i m 460 962 412 868 368 770 320 670 275. 227 1400 1000 820 700 640 579 480 2400 1700 1390 1200 1080 sio 990 IX 2 1512 3300 1362 2960 1210 2640 1058 2300 909 1980 757 1630 3800 .2700 8000 5600 2180 4520 1900 4000 1710 3560 1570 3240 2x 5450 3 10,000 4900 9000 4380 8000 3800 7000 3300 6000 2770 13.400 9400 7600 6700 5000 21.400 15,000 12,500 10,700 6000 9400 5300 8500 314 4 14,300 21,500 12,900 11,500 19,300 17,200 10,000 15,000 8600 12,900 7200 32.000 10,700 44.000 22,000 18.500 16,000 31,000 25.500 22,000 14,400 19,900 13,200 18,300 Copyright, 1927 IR1CAN OWU7II vr UBATimi V entAiMiiiw jjuuaa.a.-- a ----------, t n--------- ___ Healing and Piping Contractors National Association f out Special Permission Radiator branches more than 8 ft. in length should be one size larger than shown in Column 7. . Note 1.--These tables apply where pipes are properly readied. No allowances for defective material or workman- ^^NoteV^^aparities based mi K lb. condensation per square foot per hour equivalent radiation and actual diameter * 8^d^?tra length to be added to straight run of pipe for various fittings and valves to determine equivalent Mains are to be proportioned according to the equivalent length of run from the boiler or source of supply 10 'Determine1equivaienMength*o^run'then use figures in that corresponding Column (3 to G) tor supply mains; (L MS? JEWtoCthe'equivalent or source of supply to the ,^^tLmiMtthedistancePto thefartfrestradiator then use the figures inthe corresponding Co|umn (B to Qtasmng each riser; providing the amount of radiation for that riser does not exceed amounts shown in Column ff Where nser capacities are found to be in excess of amounts in Column H. step up to necessary size indicated in that coVumn. Note 6.--Where it is necessary to drip a steam main, branch to riser or riser, same should be dripped separate y intA^l'te.e--p"tch of mains should be not less than A in. in 10 ft.; on horizontal branches to radiators and risers at least 14 in. in 10 ft. 100 I Chapter III--Steam Heating Systems and Piping Table 14. Pipe Sizes for Two-Pipe, Gravity, Low Pressure Steam Heating Systems where Equivalent Length of Run from Boiler or Source of Supply to Farthest Radiator Exceeds 200 Ft. Capacity in Sq. Ft. Equivalent Radiation Pipe Size Inches A Equivalent Length of Pipe from Boileb to Farthest Radiator, Including Main and Riser. (See Note 4.) Supply Main Dripped and Branches to Risers Dripped-- Steam and Condensate flowing in same direction Based on 4 oz. Total Pressure Drop 100 Ft. 200 Ft, 300 Ft 400 Ft. 500 Ft. 600 Ft. BCDEFG Maximum Capacities Supply Risers Up-heo1 Branches to Supply Risers and Radiators Not Dripped H / Rad. Supply Valves and . Vertical Connections J Radiator Return Valves and Connections K X 1 in 79 65 56 49 30 46 56 26 30 56 m 245 173 141 122 no 100 122 58 122 ix 380 269 220 190 165 155 190 95. 190 122 190 386 2 2X 3 334 771 1270 2326 3474 546 898 1645 2457 446 734 1342 2006 386 635 1163 1737 345 568 1040 1552 315 518 948 1419 386 635 1129 1548 195 395 700 1150 386 -- 4 4914 3475 2828 2457 2196 2011 2042 5 9092 6429 5250 4546 4062 3712 1700 3150 --- 6 14,924 10,553 8618 7462 6669 6094 8 31,066 21,967 17,935 15,533 13,880 12,682 -- -- 10 56,689 40,085 32,730' 28,345 25,334 23.144 -- 12 90,985 64,336 52.530 45,492 40,660 37.145 ---- -- -- Pipe Size Inches M Dar Return Main Equivalent Length of Run from Boiler to Farthest Radiator in Feet 100 . 200 300 400 500 600 N 0 P Q R 5 Wet Return Main Equivalent Length op Run from Boiler to Farthest Radiator in Feet 100 200 300 400 500 600 T V VWX r i 460 412 368 320 275 227 1400 1000 820 700 640 580 IX 962 868 770 670 579 480 2400 1700 1390 1200 1080 990 IX 1512 1362 1210 1058 909 757 3800 2700 2180 1900 1710 1570 2 3300 2960 2640 2300 1980 1630 8000 5600 4520 4000 3460 3240 2X 5450 4900 4380 3800 3300 2770 13.400 9400 7600 6700 6000 5300 3 10,000 9000 8000 7000 6000 5000 21.400 15,000 12,500 10,700 9400 8500 3X 14,300 12,900 11,500 10,000 8600 7200 32.000 22,000 18.500 16,000 14,400 13,200 4 21,500 19,300 17,200 15,000 12,900 10,700 44.000 31,000 25.500 22,000 19,900 18,300 1Copyright 1927 American Society or Heatino and Ventilatinq Engineers 1 Not to be Reprinted With- vo a > \ Heating aTUj Piping Contractors National Association ) out Special Permission Radiator branches mors than 8 ft. in length should be one size larger than shown in Column /. Note t.--These tables apply where pipes are properly reamed. No allowances for defective material or workmanship have been (Abo see Tables 8 and 9). Note t.--Capacities based on lb. condensation per square foot per hour equivalent radiation and actual diameter of standard pipe. Note S.--Extra length to be added to straight run of pipe for various fittings and valves to determine equivalent length. (See Table 4). Note l.--Mains are to be proportioned according to the equivalent length of run from the boiler or source-of supply to the farthest radiators supplied by the main* Determine equivalent length of run then use figures in that corresponding Column (B to G) for supply mains; (N to 5) for dry return niains; \T to F) for wet return mains for rising the entire run. , Supply and return risers are to be proportioned according to the equivalent length of run tram the boiler or source of supply to the farthest radiator on each riser. Fen* supply risers determine the distance from the boiler to the farthest radiator served by that riser then use the figures in the corre sponding Column (B to (7) for sizing each supply riser; providing the amount of radiation for that riser does not exceed amounts shown.in Column H. Where supply riser capacities are found to be in excess of amounts shown in Column H, step up to necessary size indicated in that column. For return risers determine the equivalent length of run in feet from the top of each riser to the boiler then use the figures in the corresponding Columns (N to S) for sizing each riser. Note 6.--Where it is necessary to drip a supply main or a supply riser or a branch to a supply riser, same should drip separately into a wet return. A drip for a two-pipe system may be taken into a ary return through an adequate seal. Notes.--Pitch of mains should be not less than ^ in. in 10 ft.; on horizontal branches to radiators and risers at least H in* in 10 ft. 101 x