Document ZnNVRdMRMv4YVreqYNmXk1270

American Society of Heating and Ventilating Engineers Guide, 1930 Table 1. Cold Water Branch Supply Sizes for Fixtures and Maximum Flow in Gallons per Minute Number op Fixtures l' 2 4 8 12 16 24 32 40 ftWater Closets-- Gal. per Mia,_____________._________ 16 24 4ft 60 80 06 128 150 Tanks Pipe Size____________ ____ __________ 54 X 1 IX IX m 2 2 2 ` Gal; per Min._______________________ 30 60 80 120 140 160 200 250 800 Flush Pipe Size 1 IX IX 2 2 2 254 254 254 Valves Urinals-- Gal. per Min______________ : 6 12 20 32 42 56 72 90 120 Pipe SizeI 54 X 1. IX 154 154 154 2 2 Gal. per Min----------------------------------- 26 37 45 76 85 100 125 150 175 Flush Pipe Size. I IX IX IX IX 2 2 2 2 Valves Lavatories and Wash Sinks-- ftBased upon Each Faucet Gal. per Min_______ ___ ____________ 4 12 24 30 40 48 64 75 Pipe Size______________ ____ __ ___..... 54 X X 1 1 154 154 154 154 Bath Tuba-- Gal. per Min_____ Pipe Size 16 30 40 80 06 112 144 192 240 X I IX IX 2 2 2 254 254 Shower Baths-- Gal. per Min------------ 1_____________ 8 16 32 64 06 128 192 256 320 8 rain Pipe Size_______ 54 X 154 IX 2 . 2. 254 254 3 Head Acid and Slop Sinks. Manufacturing, Kitchen and Laundry-- Gal. per Min.____________ 16 25 40 64 84 . 96 120 160 200 per bibb Pipe Size___________ - ___ __ X 1 IX IX IX 5 2 2 2 254 per bibb Note.--The above sizes are based upon a pressure drop of 30 lb. per 100 ft. In estimating risers and mains, the number of gallons for W. C. and urinals where flush valves are used are to be as given for tanks. The hot-water faucets are to be disregarded when estimating cold-water risers and mains. Table 2. Cold Water Supply Risers for Buildings other than Residences G. P. M. G. P. M. . Pipe Size with Drop per 100 Ft. Run 51b. 10 lb. 20 lb. 10th Story 10 and 9 10 and 9 and 8 10 to 7 incl. 10 # 6 " 10 * 5 * 10 - 4 * 10 * 3 * 10 - 2 # 10 * 1 * 100 x 0.60 200 x 0.60 300x0.60 . 400 x 0.60 500 x 0.60 600x0.60 700x0.60 800 x 0.60 900 x 0.60 1000 x 0.60 60% 60 90% - 108 80% - 144 . 70% - 168 60% - 180 50% 180 .40% - 184 . 40% - 192 40% - 216 40% - 240 2'< 254' 3' 354' 3K' 3H0 3)y" 354' 354' 2" 2H* W 3" 3* 3* 3' 3' '3#. , 3' IK' iH' 2m 2K' 2K' 2K' 2K' 2K' = 2K' Note.--For residences, use Table 1, and for the main supply use 25 per cent of total of gallons used by fixtures and then take pipe size from Table 5 on a basis of 10 lb. pressure drop per 100 ft. or less if water.; supply pressure is less than 60 lb. ' Table 1 gives the amount of water in gallons which should flow per minute for the number offixtures indicated of each different type, together with the branch pipe size necessary to carry this amount of water with a pressure drop of 30 lb. per 100 ft. of run. The volume of water required per fixture is reduced as the number of fixtures in each group is increased, to take care of the factor of prob able use. For size of mains for residences, ascertain the total number of gallons per minute, connected load, from Table 1. Select the pipe diameter from 398 Chapter 23--Water Supply Piping for Buildings Table 3. Apartment House Supply Risers Based upon One, Two, and Three. Baths per Apartment Ohe (I) Batb Atahthekt 1 bath 1 W. C. 1 sink 1 lav. 15gal. 8gal. 4gal. 4gal. Two (2) Bath Apastheht Three (3) Bath Apaethhht 2 baths 2 W. C. 1 sink 2 lavs. 24 gal. 3 baths. 14 gal. 3 W. C. 4 gal. 1 sink 6gal.. 3 lavs. 30 gal. 18 gal. 4 gal. 9 gal. 31 gals. 50% demand--15 gals, per min. 48 gals. 61 gals. 40%--20 gals, per min. 40%--24 gals, per min. Top Floor Next a 15 gal. 28 <1 38 a u a 51 60 u a u a a 67 71 78 u u u 'a u a 81 83 84 a a a a 85 a Riser IX' IX' \x' 2" 2' 2" 2" 2" 2' 2" 2" 2" 20 gal. 38 " 54 " 68 " 80 " 90 " 98 " 104 " 108 " 110 " 110 " 110 " Riser IX' 2\x" " 2" 2' 2' 2X' 2X' 2X' 2X' 2H' 2 X' 24 gal. 43 " 64 * 82 " 96 " 108 " 117 124 " 134 " 143 " 143 " 143 " . Riser ix' 2" 2" 2" 2X' 2X' 2X' 2X' m' i2zwww Note.--The pipe sizes are based .upon a drop of 10 lb. water pressure for each 100 ft. run. The size of branch for each Apartment should be not less than 154 in. Tablb 4. Apartment Houses. Sizes of Water Supply Mains and Meters Based upon pressure drop of 10 lb. per 100 ft. run For 4 and 5 Stories 1 bath--------------2 baths.-----------3 baths----- --------- Four GaL Main 120 2X' 160 3' 200 3' Six GaL Main 160 3' 200 3" 240 3" Eight GaL Mam 200 3' 240 3' 280 3" Ten UaL 240 3' 280 3' 320 ZX' . For 6, 7 and 8 Stories 1 bath. 2 baths----------- : 3 baths------------ 150 190 230 2X' 3' 3' 190 230 270 3' 3" 3' 230 270 310 3' 3' ZX' 270 310 350 3' ZX' ZX" 1 bath_________ 2 baths------ -- 3 baths.---------- 200 250 300 For 9, 10,11 AND 12 Stories 3' 3' ZX' 250 300 350 3' ZX' ZX' 300 350 400 ZX' 350 ZX' . 400 ZX' ZX' ZX' 450 -4" JVofe.--This table gives the sizes of mains for apartment bouses 01 one, two or toicc uauu --. ment, and with four, six, eight or ten apartments per story and from four to twelve stories in height; Note.--'The gallons per-minute given in this table are approximated maximum demand for conditions 399