Document 3eBpJrV6Q8ZzRaX6D4jMx86JD

430 CHAPTER 19 I" 1950-Guide Table 3. Capacity Tables fob Warm-Aib and Return-Air Branches*- b FIRST STORY Fob UNINSULATED Metal Ducts Actual Lshots (from. Bonnet to Boot) or, (non Return Plenum to Boot) w Fbbt 1 TO 7 FT. 8 TO IS 13 to 17 18 TO 24 25 to 34 85 to 44 45 to 54 FT. FT. . FT. FT. FT. FT. COL. A Col. b Col. c Col. d Col. b Col. f Col. o Wabm Are Combi- nation No. Return CombiNATION No. Section A. 40 to 69 Equivalent Ft for Fittings and Register 7200 12500 16000 19100 25000 32000 80000 6700 11700 15000 18000 23400 30000 75000 6100 10800 14000 17000 21600 28000 70000 5600 4800 9900 8500 13000 11300 16000. 14200 19800 17000 26000 22600 65000 56500 4100 7400 9900 12500 14800 19800 49500 3500 6400 8700 11000 12800 17400 43500 41 42 43 44 45" 46" -- 51 52 53 54 55 56 57" Section B. 70 to 99 Equivalent Feet 5500 9900 13100 16300 19800 26200 65500 5100 9200 12300 15400 18400 24600 61500 4800 8600 11600 14500 17200 23200 58000 4500 8100 10900 13700 16200 21800 54500 3900 7100 9700 12200 14200 19400 48500 3400 6200 8500 10800 12400 17000 42500 3000 5400 7500 9500 10800 15000 37600 41 42 43 44 45" 46" -- 61 52 53 54 55 66 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 3800 6900 9400 11900 14800 13800 20000 .18800 60200 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. 130 to 164 Equivalent Feet 4100 7300 9800 12300 14600 19600 49200 3800. 3600 6900 6400 9100 8600 11700 11000 3400 6000 8100 10300 13800 12800 12000 18200 17200 16200 45800 41900 .40300 2900 5300 7200 9100 10600 14400 36000 2600 4700 6400 8100 9600 12800 31800 2300 41 4200 42 5600 . 43 7100 44 8400 45" 11200 46" 28100 - -- 51 52 53 54 55 56 57" 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 10800 9600 14400 12800 36000 32000 2400 4300 5700 7300 2100 3800 5000 6400 8600 7600 11400 10000 28200 :24700 41 51 42 52 43 53 44 54 45" 55 . 46" . 56 ---- - 57" Fob INSULATED Ducts Cuti. A 1 TO 0 FT. Col. b 10 TO 17 ft. Col. c COL/D Col. b 18 TO 25 TO 35 to 24 FT. - 34 FT. 64 FT. Fob-Ducts teat-abb COM PLETELY INSULATED with 4 In. Thick Insul ation FBou Bonnet to Boot, ubb these Column Hbadznos. . *These tables are for use in ailing both the warm air and the return air branches. .b Frictional remstanoea and temperature drops in ducts have both been accounted for in these tables.'-' - 0 Use these items only when the building construction* or capacity requirements, necessitate the use of two adjoining stacks or floor registers. ,1 Mechanical Warm Air Systems 431 Table 4'. Capacity Tables fob Wabu-Aib and Return Air Branches*-*1 ' SECOND STORY UNINSULATED Metal Ducts Actual Length (from Bonnet to Boot) or, (from Return Plenum to Boot) in Feet 1 to 7 FT. 8 to IS 13 to 17 18 to 24 25 to 34 36 to 44 45 to 54 FT. IT. FT. FT. FT. FT. Col. a Col. b Col. c Col. d Col. b Col. f Col. o Wabm Air Combi* No. Return Are Combi- No. Section A. Equivalent Ft for Register 6300 ; 5700 10900 10000 14000 13000 17000 15900 21800 20000 28000 26000 70000 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 42 43 44 45" 46" -- 51 52 53 54 55 56 57" Section B.. 70 to 99 Equivalent Feet 5000 4600 9000 8200 11900 11000 14800 .13900 4300 7600 10300 13000 18000 .16400. .15200 23900 22000 20600 59500 55000 51500 4000 7100 9600 12200 14200 19200 48000 3400 6200 8400 10800 3000 5400 7500 9600 12400 -10800 16800 15000 42000 37500 2700 4700 6700 8500 9400 13400 33500 41 42 43 44 45" 46" -- 51 52 53 54 55 56 57" Section C. 100 to 129 Equivalent Feet 4200 7700 10400 13000 15400 21700 52200 3900 7200 9700 12100 14400 19400 48400 3700 6700 9000 11300 13400 18000 45300 3500 6200 8400 10600 12400 16800 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 3500 6300 8400 10500 13600 12600 18200 .16800 .45500 42000 3200 5800 7900 9800 11600 15800 39600 3000 5500 7400 9200 11000 18400 36800 2700 4800 6300 8100 9600 12600 32200 2300 4200 5700 7200 8400 11400 28200 2100 3700 5000 6400 41 42 43 44 7400 . 45" 12800 46" 25100 --- 51 52 53 54 55 56 57" iSection E. 165 to 200 Equivalent Feet 3500 6100 8200 10300 12200 16400 .41000 3200 5700 7600 9500, 2900 5300 7100 8900 11400 10600 15200 14200 38300 35800 2700 5000 6700 8300 10000 13400 33400 2500 4400 5700 7400 2100 3900 5100 6500 8800. 7800 11400 10200 29000 25800 1900 3400 4500 5800. 6800 9000 22800 41 42 43 44 45" 46". --- 51 52 53 54 55 56 57" Fob INSULATED Ducts Col. a 1 to 8 Col. b 9 to 14 Col. c 15 to 20 Col. d 21 to 27 Col. b 28 to 42 Col. f 43 to 54 Fob Ducts that abe COM-. PLBTBLY INSULATED Jwith In.Thick Insulation Usefbom Bonnet to Boot these Column Headings. * These tables are for use in siting both the warm air and the return air branches. b Frictional resistance and temperature drops in ducts have both been accounted for in these tables. 0 Use these items only when the building construction, or capacity requirements, necessitate the use of two adjoining stacks or floor registers.