Download Loading unit : Flowrate and more Summaries Building Materials and Systems in PDF only on Docsity!
Job No. Page No. Revision
Calculations
1 of 1
Job
PUBLIC
HEALTH
Date Checked System^ Loading units - Water Drg No.
Date By CDB
Fitting No Off LU's Total Frequency WC 9 litre flush 0 5 0 M 0 0 0 T WC 6ltr flush 2 3 0 L 6 0 6 T Basin 15mm sep taps 2 3 3 L 6 6 12 T Basin 8mm Mixer tap 0 3 3 H 0 0 0 T Sink 15mm Conn 4 5 5 L 20 20 40 T Sink 20mm Conn 0 7 7 M 0 0 0 T Hand Spray 15mm 0 4 4 H 0 0 0 T Shower 15mm conn 0 3 3 M 0 0 0 T Bath 20mm Conn 0 7 7 M 0 0 0 T Urinal 0 1 0 M 0 0 0 T Bidet 8mm mixer 0 3 3 H 0 0 0 T Bucket Sink 2 3 3 L 6 6 12 T Slop Hopper Cistern onl 0 3 0 M 0 0 0 T Slop Hopper inc Taps 0 5 5 M 0 0 0 T Drinking Fountain 1 2 0 L 2 0 2 Drench shower 0 15 0 M 0 0 0 T Washing Machine (dom) 0 5 0 M 0 0 0 T Dishwasher (domestic) 0 2 0 L 0 0 0 T Total Appliances 11 Total C 40 H 32 72 0.7 L/S 0.6 L/S 1.0 L/S
Add For Contingencies ### 10.
LU Total b/d 72
Total LU 82. Total L/S (^) 1.1 l/s FREQUENCY OF USE L = Low M = Medium H =
LU'
s Col d
LU'
s Hot LU's C Total LU's H Total Hig h
Job No. Page No. Revision
Calculations
1 of 1
Job
PUBLIC
HEALTH
Date Checked System^ Cold Water Storage
Date By Occupancy Occupancy = 721 Persons Storage as IOP Guide = 15 litres/pupil So Toatal Storage = 721 x 15 = 10815 Litres Minimize storage to prevent water quality degradation provide only 50% Storage ( As per IOP So storage = 50% of 10815 = ###Litres Use 1 No. Sectional Tank 3L x 2W x 1.5H with central division plate Nominal Capacity 4500 Litres Each Actual Capacity 3600 Litres each side Actual total Capacity 7200 litres
Job No. Page No. Revision
Calculations
1 of 1
Job
PUBLIC
HEALTH
Date Checked System^ Hot Water Storage Drg No.
Date By Gas Fired Heaters
Using procedure and data from CIBSE Guide G From: Recovery Period Table 2. Plant Sizing Curves Figure 2.10 - Service Plant Sizing Curves Figure 2.11 - Catering Recovery Period 120 minutes Service Storage Capacity litre/person 1. Boiler Output kW/person 0. Catering Storage Capacity litre/meal 2. Boiler Output kW/meal 0. Number of Persons 731 Number of Meals 432 So: Service Storage Capacity litres 1.10 x 731 = 804 Boiler Output kW 0.04 x 731 = 26 Catering Storage Capacity litres 2.3 x 432 = 994 Boiler Output kW 0.08 x 432 = 35 Both Catering and Service from the same plant so:- Total Storage Capacity Litres 804 + 994 = ### Total Boiler Output kW 26 + 35 = 60 Add 25% allowance for mixing of incoming water with hot water Total Storage Capacity Litres ### + 25% = ### Litres Add System heat losses through pipework:- Total Boiler Output kW 60 + 4 = 64 kW Use 2 No. Units at 67% Capacity each
x 67% = ### Litres each
FLOW RATE DEMAND STARAGE DEMAND REQUIREMENTS
Job Name Job number Maximum Demand Cold water storage Requirements litrs per 24 hours Capacity Loading No. of Total flow Total Litres L/Sec Units units Rates Demand Hot & cold l/s Rates LU Basin, 15mm sep taps 7 0.22 6 2.00 0.44 12.00 90 180. Basin, 2 X 8mm mixer 5 0.183 4.5 0.00 0.00 0.00 45 0. Sink, 15mm sep Tap 12 0.3 10 4.00 1.20 40.00 130 520. Sink, 20mm sep.mix tap 18 0.32 11 0.00 0.00 0.00 150 0. Bath, 15mm Sep/mix tap 80 0.3 10 0.00 0.00 0.00 90 0. Bath, 20mm sep/mix tap 80 0.36 14 0.00 0.00 0.00 90 0. WC 9 ltr flush 9 0.2 5 0.00 0.00 0.00 0. WC 6 ltr flush 6 0.15 3 2.00 0.30 6.00 180 360. Hand Spray 15mm 5 0.22 6 0.00 0.00 0.00 35 0. Shwr, 15mm head 6 0.183 4.5 0.00 0.00 0.00 190 0. urinal bowl 1 0.5 1 0.00 0.00 0.00 11 0. Flow Rate
Litres Per TOTAL Second Gravity FED Systems Boosted Cold Water System LOADING 0.8 m/s not more than 2.5 M/S UNITS Pipe Size mm Pipe Size mm 8000 30 159 108 7650 29 159 108 7350 28 159 108 7000 27 159 108 6800 26 159 108 6600 25 159 108 6300 24 159 108 6000 23 159 108 5650 22 159 108 5350 21 159 108 5000 20 159 108 4895 19.5 159 76 4675 19 159 76 4445 18.5 159 76 4225 18 159 76 4000 17.5 159 76 3850 17 133 76 3675 16.5 133 76 3450 16 133 76 3250 15.5 133 76 3000 15 133 76 2850 14.5 133 76 2750 14 133 76 2565 13.5 133 76 2350 13 133 76 2000 12.5 133 76 1985 12 108 76 1965 11.5 108 76 1900 11 108 76 1865 10.5 108 76 1822 10 108 76 1800 9.9 108 76 1750 9.8 108 76 1700 9.7 108 76 1675 9.6 108 76 1645 9.5 108 76 1625 9.4 108 76 1575 9.3 108 76 1545 9.2 108 76
- Bidet, 8mm mix tap 3 0.125 2 0.00 0.00 0.00 90 0.
- Drench Shower 150 0.35 15 0.00 0.00 0.00 90 0.
- Bucket Sink, 15mm 25 0.22 6 2.00 0.44 12.00 150 300.
- Dishwasher (Domestic) 5 0.15 3 0.00 0.00 0.00 90 0.
- Slop Hopper, cistern only 7.5 0.15 3 0.00 0.00 0.00 160 0.
- Slop Hopper, cistern/taps 7.5 0.2 5 0.00 0.00 0.00 180 0.
- Drinking Fountain 1 0.125 2 1.00 0.13 2.00 11 11.
- Dom Cloths washer mach 5 0.125 2 0.00 0.00 0.00 90 0.
- Total no. of Appliances 11.
- Total Simultanious Total ltrs per 24hours 1371.
- Demand Total Flow - l/s and Demand -LU 2.51 72.
- 1525 9.1
- 1475 8.9
- 1445 8.8
- 1410 8.7
- 1385 8.6
- 1350 8.5
- 1325 8.4
- 1295 8.3
- 1265 8.2
- 1235 8.1
- 1175 7.9
- 1148 7.8
- 1124 7.6
- 1100 7.5
- 1050 7.4
- 1035 7.3
- 1021 7.2
- 1012 7.1 - 994 6.9 - 967 6.8 - 951 6.7 - 934 6.6 - 917 6.5 - 900 6.4 - 884 6.3 - 867 6.2 - 851 6.1 - 817 5.9 - 800 5.8 - 765 5.7 - 735 5.6 - 700 5.5 - 690 5.4 - 680 5.3 - 670 5.2 - 660 5.1 - 640 4.9 - 630 4.8 - 620 4.7 - 610 4.6 - 600 4.5 - 575 4.4 - 554 4.3 - 534 4.2 - 517 4.1 - 465 3.9
- 433 3.8
- 400 3.7
- 390 3.6
- 380 3.5
- 370 3.4
- 360 3.3
- 350 3.2
- 330 3.1
- 290 2.9
- 270 2.8
- 250 2.7
- 240 2.6
- 230 2.5
- 220 2.4
- 210 2.3
- 200 2.2
- 190 2.1
- 165 1.9
- 156 1.8
- 143 1.7
- 130 1.6
- 125 1.5
- 100 1.4
- 90 1.3
- 80 1.2
- 75 1.1
- 65 0.95
- 60 0.9
- 55 0.85
- 50 0.8
- 47 0.75
- 42 0.7
- 38 0.65
- 34 0.6
- 30 0.55
- 25 0.5
- 24 0.49
- 23 0.48
- 22.5 0.47 - 21 0.46
- 20.5 0.45 - 20 0.44
- 19.5 0.43 - 19 0.42
- 18.5 0.41 - 18 0.4 - 10 0.3 - 9 0.28 - 8 0.26
- 4.5 0.183
- 1.5 0.1
NOTES
page 3 IOP Minimum Storage Requirements Ltr per Hostel 90 / bed space Hotel 135 /bed space Offices with canteen 45 / person without 40 /person Resaurant 7 /meal Day school nursery 15 /pupil Primary 15 /pupil Secondary 20 /pupil technical 20 /pupil Boarding school 90 /pupil Childs home / Residential nursery 135 /bed space Nuses home 120 / bed spacce Nursing or convelescent home 135 / bed space District Hospital 600 /bed space
