Page 286 - Fair, Geyer, and Okun's Water and wastewater engineering : water supply and wastewater removal

JWCL344_ch07_230-264.qxd 8/2/10 8:44 PM Page 246

246 Chapter 7 Water Distribution Systems: Modeling and Computer Applications

R-1 PMP-1
P-12
P-13
J-6 P-8 J-7 P-10 J-8 P-11
J-9

P-7 P-9
P-1
P-6
J-4 J-5

J-1 P-3 P-5

P-2
J-2 J-3
P-4
P-14

T-1

Figure 7.8 Schematic for Example 7.2

Table 7.3 Continuous Demand Pattern Data for Example 7.2 Table 7.4 Pump Information for Example 7.2
Time from Time from Flow Head
Start (h) Multiplier Start (h) Multiplier (L/min) (m) Controls
Start 0.80 13 1.30 0 40
Off of node T-1 above 103.5 m
1 0.60 14 1.40 3,000 35
On if node T-1 below 99.5 m
2 0.50 15 1.50 6,000 24
3 0.50 16 1.60
4 0.55 17 1.80
5 0.60 18 1.80
6 0.80 19 1.40
7 1.10 20 1.20
8 1.50 21 1.00
9 1.40 22 0.90
10 1.30 23 0.80
11 1.40 24 0.80
12 1.40

Solution to Parts 1–4:
• Use the same steps as in Example 7.1 to set up the project, lay out the system, and enter the
data. Be sure to set units to System International and the drawing mode to Schematic.
Again, you will likely have to rename many of the elements after you draw the general lay-
out to make sure data is correctly entered for each element.
• The demand pattern data can be entered by selecting Patterns under the Components
menu. Right-click Hydraulic to select New. The Start Time is 12:00:00 AM, the Starting