Document 9LkgKxxw95p4goKBdZkNmy4oD

48 CHAPTER 22 ' ' 1949 Guide -Table 3. Capacity Tables fob Wabm-Aib and Return-Air Branches*- 1 FIRST STORY . UNINSULATED Metal Ducts Actual Length (from Bonnet to Boot) on. (from . Return Plenum to Boot) ts Feet X to 7 - . .8 to IS FT. 13 TO 17 18 to 24 25 to 34 85 to 44 46 to 64 FT. FT. FT. FT. FT. f Col. a Col. b COL. C Col. d Col. b Col.- f Col. a Warm Combination No. Return Air Combi- nation No. SdCtion'A. > - . - ~ 40 to.69 Equivalent - Ft for Fit, tings and' - Register 7200' 6700 12500 11700 16000 15000 19100 18000 25000 23400 32000 30000 80000 75000 6100 10800 14000 17000 21600 28000 70000 . 5600 9900 13000 16000 19800 26000 65000 4800 8500 11300 14200 17000 22600 56500. 4100 3500 41 7400 6400 42 . 9900- - 8700 v 43 12500 - 1f1" 000' ' .44 - 14800 12800 19800 17400 49500 43500 45 46" 51 52 53 ' 54 55 56 57" Section B. 5500 5100 4800 4500 3900 3400 3000 41 51 .70 to 99 Equivalent Feet 9900 13100 16300 9200 12300 15400 8600 11600 14500 8100 10900 13700 7100 9700 12200 6200 8500 10800 5400 7500 9500 42 43 44 ' 52 . 53 54 19800 18400 17200 16200 14200 12400 10800 26200 24600 23200 21800 `19400 17000 15000 65500 61500 58000 54500 48500 .42500 37500 45" 46" 55 56 57" Section C. 100 to 129 Equivalent Feet 4600 8500 11300 14300 17000 22600 56200 4300 7900 10600 13500 15800 21200 52600 4100 7400 10000 12700 14800 20000 50200 .3800 6900 9400 11900 13800 18800 47300 3300 6100 8400 10500 12200 16800 42000 3000 5300 7400 9300 10600 14800 37000 2700 4700 6500 8300 9400 13000 32400 41 42 43 44 . 45" .46" 51 52 53 54 55 56 57" Section D. *- 4100 7300 130 to: 164 9800. . * Equivalent .12300 3800 6900 9100 11700. 3600 6400 8600 11000 3400 2900 6000 5300 . 8100 ; 7200 10300. 9100 2600 4700 6400 8100 2300 4200 5600 7100: 41 42 43 44 51 52 53 ' 54 . 14600 13800 12800 .12000 10600 9600 8400 45" ..55 . 19600 18200 17200 16200 14400 12800 11200 46" .56. 49200 45800 41900 .40300 36000 31800 28100 , 570 Section E. 165 to 200 Equivalent . . Feet 3800 6500 8800 11000 13000 17600 44100 3500 6100 8200 10500 12200 16400 41500 3300 5700 7700 9900 11400 15400 38800 3100 2700 5400 ' 4800 7200 " 6400' 9300 8300 2400 2100 4300 3800 5700 ' 5000 7300 6400 10800 9600 8600 7600 14400 12800 11400 10000 36000 32000 28200 24700 41 42 43 44 45" 46" 51 52 53 54 . 55 56- ' 57" . Fob INSULATED Ducts Col. a 1 TO 9 FT. Col. b Col. c 10 TO 17 FT. 24 FT. Col. d Col. e .34 FT. 64 FT. Fob Ducts that'arb COM* PLETELY INSULATED with } In. Thick Insul- ation from Bonnet to Boot, --use these Column Headings. ' * These tables are for use in siring both the warm air and the return air branches. ' b.`Frictional resistances and temperature drops in ducts hare both been accounted `for in these tables. Jl'.? items only when the building construction, or capacity requirements, necessitate'the use of two adjoining stacks or floor registers. MechanicalWarm Air Systems 449 , Table 4. Capacity Tables for Warm-Air and Return Air Branches8-*5 \ SECOND. STORY Fob UNINSULATED Metal Ducts Actual Length (from Bonnet to Boot) or, (from Return Plenum to Boot) in Feet Warm Return 1 TO 7 FT. Col. a 8 to 13 FT. Col. s 13 to 17 FT. Col. c 18 TO 24 FT. Col. d 25 to 34 FT. Col. b 35 to 44 FT. Cot. F 45 to 54 FT. Col. 0 Combi nation No. Combi nation No. Section A. 4U t.n fiP Equivalent Ft for Fittings Register 6300 10900 14000 17000 21800 28000 70000 5700 10000 13000 15900 20000 26000 65000 5200 9200 12100 14900 18400 24200 60500 4800 8500 11400 13900 17000 22400 57000 4100 7300 10000 12400 14600 20000 50000 3500 6400 8800 11100 12800 17600 44000 3100 5600 7800 9900 11200 15600 39000 41 ' 51 42 52 43 53 44 54 45s'' ` 55 46" *56 . -- .57" Section B. 70 to 99 Equivalent Feet 5000 9000 11900 14800 4600 - 4300 8200 7600 11000 10300 13900 13000 18000 .16400 .15200 23900 22000 .20600 59500 55000 51500 4000 7100 9600 12200 3400 6200 8400 10800 14200. 12400 19200 16800 48000 42000 3000 5400 7500 9600 10800 15000 37500 2700 4700 6700 8500 41 42 43 44 9400 45" 13400 46" 33500 ' --- 51 52 53 54 55 56 ' . 57". Section C. 100 to 129 Equivalent Feet 4200 ' 3900 . 3700 7700 7200 6700 10400 9700 9000 13000 12100 11300 3500 6200 8400 .10600 15400 14400. 13400 12400 21700 19400, 18000 16800 52200 48400., 45300 42300 3000 5400 7400 9400 10800 14800 37000 2600 4700 6500 8300 9400 13000 32500 2400 4100 5800 7400 8200 11600 29000 41 42 43 44 45" 46" 51 . 52 53 ' ' 54 55 56 57" Section D. 130 to 164 . Equivalent Feet 3800 6800 9100 11400 13600 18200 45500 3500 6300 8400 10500 3200 5800 7900 9800 12600 11600 16800. 15800 42000 39600 3000 5500 7400 9200 11000 18400 36800 2700 4800 6300 8100 2300 4200 5700 7200 9600 8400 12600 11400 32200 .28200 2100 3700 5000 6400 7400 12800 25100 41 42 43 44 45" 46" -- 51 52 53 54 55 56 57".. , Section E. - 3500, 6100 165 to 200 8200 Equivalent 10300 Feet 12200 16400 ; ' v. .41000 3200 5700 7600 9500 11400 15200 38300 2900 5300 7100 8900 10600 14200 35800 2700 5000 6700 8300 10000 13400 33400 2500 4400 5700 7400 . 2100 3900 5100 6500 8800 7800 11400 10200 29000 25800 1900 41 3400 42 4500 43 5800 44- 6800 9000 22800 45" 46"- ' 51, : 52 . ; 53 54 55 56 57" Fob ' - INSULATED Ducts' Col. a 1 to 8 FT. Col. b 9 to 14 FT. Col. c Col. d 15 to 20 '21 to 27 FT. FT. Col. b 28 to 42 Col. f 43 to 54 PLETELY INSULATED. with JIw-Thick Insulation from Bonnet to Boot Usb these Column Headings. * These tables are for use in siring both the warm air and the return air branches. . ... k ** Frictional resistance *nd temperature drops in ducts have both been accounted for in these tables. Use these items only when the building construction, or capacity requirements, necessitate the use of.two adjoining stacks or floor registers.