ENV 4561
Assigned: August 24, 2011
Fall 2011
Homework #1
Due: September 1, 2011
375 ft
1. (25 points) A WTP plant operator is trying to size a pump that takes water from a WTP
holding tank and sends it to a house on a hill above the plant. The operators g
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ENV 4561
Assigned: October 27, 2011
Fall 2011
Homework # 9
Due: November 3, 2011
1. A culvert is to be designed to pass 250 cfs. It is 240 ft long at a slope of .03 ft/ft. The
AHW is 15 ft and the TW is 5 ft. Design the following types of culverts and sho
ENV 4561
Assigned: October 20, 2011
Fall 2011
Homework # 8
Due: October 27, 2011
1. The plan view of the sewer system you have to design is shown in Figure 1. The annual
average daily flow you are designing for is 150 gal/capita/day. The number of house
c
ENV 4561
Assigned: October 13, 2011
Fall 2011
Homework # 7
Due: October 20, 2011
Rework the hydraulic profile in BJP Chapter 6. Redo the example for the grit chamber (6.1),
primary clarifier (6.2), aeration basin (6.3), final clarifiers (6.4) and the chlo
ENV 4561
Assigned: October 6, 2011
Fall 2011
Homework # 6
Due October 13, 2011
1) A 4 ft rectangular channel carries a flow of 28 cfs and terminates in an overfall. The channel has
a slope of 0.0018 ft/ft and n = 0.013. Determine the distance from the ove
ENV 4561
Assigned: October 6, 2011
Fall 2011
Homework # 6
Due October 13, 2011
1) (20 points) A 4 ft rectangular channel carries a flow of 28 cfs and terminates in an overfall. The
channel has a slope of 0.0018 ft/ft and n = 0.013. Determine the distance
ENV 4561
Assigned: September 29, 2011
Fall 2011
Homework # 5
Due: October 6, 2011
1) A 12 in. ID diameter pipe is discharging to a holding pond with the discharge end 4.0 ft
above the pond water surface. If the water at depth at the end of the pipe is 8 i
ENV 4561
Assigned: September 29, 2011
Fall 2011
Homework # 5
Due: October 6, 2011
1) (20 Points) A 12 in. ID diameter pipe is discharging to a holding pond with the discharge end
4.0 ft above the pond water surface. If the water at depth at the end of the
ENV 4561
Assigned: September 15, 2011
Fall 2011
Homework # 4
Due: September 22, 2011
The following figure represents the proposed pump stations within a collection system. Each pump
station will see the noted flow rate and is sited at the listed elevation
ENV 4561
Assigned: September 15, 2011
Fall 2011
Homework # 4
Due: September 21, 2011
The following figure represents the proposed pump stations within a collection system. Each pump
station will see the noted flow rate and is sited at the listed elevation
ENV 4561
Assigned: September 8, 2011
Fall 2011
Homework # 3
Due: September 15, 2011
1) Compute the headloss in feet of a 350 ft long, 1.5 pipe containing sludge (solids) with the
following conditions:
a) Q = 25 gpm; 3% and 6% solids
b) Q = 18 gpm; 9% and
ENV 4561
Assigned: September 8, 2011
Fall 2011
Homework # 3
Due: September 15, 2011
1) (25 points) Compute the headloss in feet of a 350 ft long, 1.5 pipe containing sludge (solids)
with the following conditions: Answers may vary slightly
a) Q = 25 gpm; 3
ENV 4561
Assigned: September 1, 2011
Fall 2011
Homework # 2
Due: September 8, 2011
1) A city in central Florida is building an effluent holding pond to be used as part of a spray
irrigation system. The holding pond is located 8 miles away from the 7 MGD W
ENV 4561
Assigned: September 1, 2011
Fall 2011
Homework # 2
Due: September 8, 2011
1) (25 points) A city in central Florida is building an effluent holding pond to be used as part of a
spray irrigation system. The holding pond is located 8 miles away from
ENV 4561
Assigned: August 24, 2011
Fall 2011
Homework #1
Due: September 1, 2011
375 ft
1. A WTP plant operator is trying to size a pump that takes water from a WTP holding tank and
sends it to a house on a hill above the plant. The operators goal is to ha