Document GKjRg7ar4B7voqDLdoEx5Mybv

American Society of Heating and Ventilating Engineers Guide, 1932 26.8, M-m. fixtures, the riser of the 2nd floor supplied must accommodate 53.6 fixtures, the 3rd. 80.4, etc. These values are shown in Fig. 2. By referring to Table 3 the pipe sizes may be determined readily and are as shown in Fig. 2. The hot water riser will supply the baths and lavatories only and has a value of 7.4 for each floor. The riser is sized accordingly. Riser No. 2 is similar to Riser No. 1 except that only 1-in. pipe has been used for the flushometer connections. The discharge to the flushometer valve will be at a lower rate and will take a correspondingly smaller riser. The cold water factor per floor is now 18.4. 210 Chapter 13--Domestic Water Requirements and Pipe Sizes The class of fixtures per floor and their fixture value for the various risers of Fig. 2 are as follows: Riser No. 1 2 W. C. flushometers (l)4-in. connections) 2 Baths (54-in. connections)........................... 2 Lavatories (J^-in. connections).,................ Fixture value per Boor (cold water.----Fixture value per floor (hot water)...... 19.4 5.4 2.0 26.8 7.4 Riser No. 2 2 W. C. flushometers (1-in. connections).... 2 Baths (54-in. connections)............................ 2 Lavatories 04->n- connections)...... .........-- Fixture value per floor (cold water)..... Fixture value per floor (hot water)...... 11.0 5.4 5.0 18.4 7.4 Riser No. 3 6 W. C..._.................................................. ^........... 4 Urinals................................................................. 4 Lavatories............................................... --- Fixture value (cold water)...................... Fixture value (hot water)........................ 58.2 10.8 4.0 73.0 4.0 Riser No. 4 12th, 13th, Hth and 18th to 22nd floors. 2 W. C................................................................... 2 Urinals............................................................. 1 Lavatory........................................................... Fixture value (cold water)...................... Fixture value (hot water)........................ 19.4 5.4 1.0 25.8 1.0 15th, 16th and 17th floors 6 Rain Head Showers____ 6 Needle Showers............... 4 W. C. (lX-in.).~...................... 4 Urinals (54-in.)........................... 3 Lavatories.................................... Fixture value (cold water). Allowance (see p. 212)....... -Fixture value used...... ........ Fixture value (hot water).. Allowance (see p. 212)....... Fixture value used.............. 6.0 33.0 38.8 10.8 3,0 91.8 17.0 108.6 42.0 . 17.0 . 59.0 Risers 5, 6, 7 and 8 2 W. C............................................. 2 Baths........................................... 2 Lavatories.................................. 2 Sinks............................................. 2 Laundries (54-in.)..................... Fixture value (cold water). Fixture value (hot water).. 19.4 5.4 2.0 2.0 5.4 34.2 14.8 211