Document 9ORqqBj09v3Mkv1pz648GGj7

American Society of Heating and Ventilating Engineers Guide, 1928 Chapter III--Steam Heating Systems and Piping Table 13. Pipe Sizes for Two-Pipe Vapor! 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 Equivalent Length op Pips prom Boileb to Farthest Radiator, Including Main and Riser. (See Note 4.) Supply Main Dripped and Branches to Risers Dripped-- Steam and Condensate Sowing in same direction. Based on 2 oz. Total Pressure Drop 100 Ft. 200 Ft 300 Ft 400 Ft Supoly Risers Up-Feed Maximum Capacities Branches to Supply Risers and Radiators Not Dripped -- A B C D E F G* H X 30 i 79 56 46 39 56 190 26 450 ix 173 122 100 87 122 1H 269 190 155 134 190 58 990~ 95 1500 2 546 386 315 273 386 2A 898 635 518 449 635 195 3000 395 3 1645 3A 2457 1163 1737 948 1419 822 1228 1129 1548 700 1150 -- 4 3475 2457 2011 1738 2042 5 6929 4546 3712 3214 -- 1700 3150 -- 6 10,553 7462 6094 5276 Different makes of supply and return valves, steam traps and other specialties 8 21,967 15,533 12,682 10,983 vary as to capacity. therefore use size az 10 40,085 23,345 23,144 20,043 Vertical connections to be of same size 12 64,336 45,492 37,145 32,168 zontal runout to be not less than $ in. Pipe Incbes Dbt Return Main Equivalent Length op Run prom Boiler to Farthest Radiator in Feet 100 200 300 400 Wet Return. Main Equivalent Length op Run prom Boiler to Farthest Radiator in Feet 100 200 300 400 I/ K L M N 0 P Q i 355 320 285 248 1000 700 580 500 IX 745 670 595 520 1700 1200 990 850 m 1173 2 2680 1058 2300 943 2140 822 1880 2700 5600 1900 4000 1570 3240 1350 2800 2X 4300 3 7800 3800 7000 3470 6250 3040 5480 9400 15,000 6700 10,700 5300 8500 4700 7500 3X 11,100 10,000 8800 7880 22,000 16,000 13,200 11,000 4 16,700 15,000 13,400 11,700 31,000 22,000 18,300 15,^p0 ---;---------"S ,rt. , 1Q27 I American Societt op Heating and Ventilating Engineers 1 Not to be Reprinted Wlth- vopyngni, t | Heating and Piping Contractor* National Aeeodation J out Special Permission *Radiator branches more than 8 ft in length should be one size larger than shown in Column G. tHiis table is for systems which are open to atmosphere or operate under slight pressure or partial vacuum without use of vacuum pumps. Note /.--These tables apply where pipes are properly reamed. No allowances for defective material of workmanship have been made. (Also see Tables 18,19 and 20). Note 8.--Capacities based on lb. condensation per square foot equivalent radiation and actual diameter of standard pipe. Note 8.--Extra length to be added to straight run of pipe for various fittings and valves to determine equivalent length. (See Table 6). Note 4.--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 E) for supply mains; (/ to AO ' for dry return mains; (N to Q) for wet return mains for sizing the entire run. Supply and return risers are to be proportioned according to the equivalent length of run from the boiler or source of i supply to the farthest radiator on each riser. For supply risen determine the distance from the boiler to the farthest radiator served by that riser then use the figures in the corresponding Column (B to E) for sizing each supply riser; providing the amonnt of radiation for that riser does not ; exceed amounts shown in Column F. Where supply riser capacities are found to be in excess of amounts shown in Column F, step up to necessary rise 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 (J to M) 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. The drip for a vapor or vacuum system may be taken into a dry return through a steam trap. /. Note 6.--Pitch of pipe should be not less than in. in 10 ft.; on horizontal branches to radiators, at least M in. in 10 ft 104 Table 14. Pipe Sizes for Two-Pipe Vapor! 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 So* Inches Equivalent Length or Pipe from Boiler to Fabtheet Radiator Including Main and Rises. (See Hate 4.) Supply Main Dripped and Brancbee to Risers Dripped-- Steam and Condensate Bowing in same direction. 100 Ft. 200 Ft. on 4 oz. Total Pressure Dhop 300 Ft 400 Ft. 500 Ft. 600 Ft. Maximum Capacities Supply Risers Up-Feed] Branches to Supply Risers and Radiators Not Dripped 7* Return Risers % lX 2 2Vl 3 m_ 4 5 ~6 8 to 12 Pipe Sue Incbes Ill 1if 380 771 1270 2326 3474 4914 9092 14,924 31,066 56,689 90,985 79 65 173 141 269 220 546 446 898 734 1645 2457 1342 2006 3475~ 6429 2828 5250 10,553 21,967 8618 17,935 40,085 64,336 32,730 52,530 Dbt Return Main 56 122 190 386 635 1163 1737 2457 4546 7462 15,533 28,345 45,492 "Equivalent Length op Ron prom Boileb to Fartiiert Radiator in Feet 200 30 190 49 46 56 26 450 no 100 122 58 990 165 155 190 95 1500 345 315 386 195 3000 568 518 635 395 1040 1552 948 1419 1129 1548 700 1150 2196 4062 6669 13,880 25,334 40,660 2011 3712 6094 12,682 23.144 37.145 .2042 1700 3150 Differed sale of sapplr and return al.es, lit.mtr.pt .ad other apecUltiea vary az to capacity, therefore oze size aa recommended for any partrcnlar make. Vertical connection, to he of une lice .1 salve and trap Died. Retara horizoatal roaoot to ha not lea, than K in. Wet Rbtubn Main Equivalent Length op Ron peom Boiler to Farthest Radiator in Feet 1 tVi 460 962 412 868 368 770 320 670 322 579 275 1400 1000 820 700 590 480 2400 1700 1420 1200 1020 600 860 t'A 2 1512 1362 3300 2960 1210 2640 1058 2300 909 1980 757 1630 3800 8000 2700 5600 2260 4500 1900 4000 1560 3360 1300 2800 2A 5450 3 10,000 4900 9000 4380 8000 3800 7000 3300 6000 2770 13.400 9400 7600 6700 5000 21.400 15,000 12,300 10,700 5700 9300 4800 7800 3A 4 14,300 21,500 12,900 19,300 11,500 17,200 10,000 15,000 8600 12,900 7200 32.000 10,700 44.000 22,000 24.000 31,000 26.000 16,000 13,600 22,000 20,500 11.400 15.400 Cctnvrtehr 1QT7 / Amebican Socibtp op Heatino and Ventilattno ENGINEERS \ Not to be Reprinted With- pyT B ' \ Heating and Piping Contractor* National Aeeodation j out Special Permission 'Radiator branches mors than 8Ft in length should be ana size larger than 8hown in Column I. tThis table is tot systems which are open to atmosphere or.operate under slight pressure or partial vacuum without use of vacuum pumGcaet.e t.--These tables apply where pipes are properly reamed. No allowances for defective material or workmanship have been made. (AbHoasteee8T.--abCleaspa1c8i.tie19s abnasde2d0o).n K lb. condensation per square foot equivalent radiation and actual diameter of standard pipe. Noted.--Extra length to be added to straight run of pipe for various fittings and valves to determine equivalent length. (See Table 6). Hate l.--Mains are to be proportioned according to the equivalent length of run from the boiler or source of supply to the farthest rad.igateornsusiunpepleieqduibvyaltehnet nleyntgipth, of run then use figures in that corresponding Column (B to 0) for supply mains; (L to Q) for dry return maipSSu;ppily and refoturrwn eritsreerstuarnremtoainbse fporrospiozrintiogntehde eancctiorerdriunng. to the equivalent length of run from the boiler or source of supply to the rarth'Feosrtsruapdpialytorrisoenrsedaectherrmiseinre. the distance from the boiler to the farthest radiator served by that riser then use the figures in the corre sponding Column (B to G) for sizing each supply riser; providing the amount of radiation for that riser does not exceed amounts shown in txmimn H. Where supply riser capacities are found to be in excess of amounts shown in Column H, step up to necessary size indicated in uat 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. ,n "Wbe it^is^unmecDe8ss(aLry1t0oQd)rifprassiruinpgplyeamchairniseorr.a supply riser or a branch to a supply riser, same should drip separately into 8 ''Ld1,D'^e for a vaoor or a vacuum system may be taken into a dry return through a steam trap. Awe o.--Pitch of pipe should be not less than & in. in 10 ft.; on horizontal tranches to radiators, at least H in. in. 10 ft 105