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Concrete Reservoirs(Every Tank is Unique)
Date Title 2
Garden Home
5th Street Reservoir
Waluga Reservoir #2
5th Street Lebanon
Date Title 3
5th Street Lebanon
Date Title 4
Waluga Reservoir #2
Date Title 5
OBECs OFFICE
Waluga Reservoir #2
Date Title 6
Garden Home
Date Title 7
Garden Home
Date Title 8
Reservoir Facts
5th StreetType: Prestressed
Height: 45
Diameter: 124
Volume: 4MG
Roof Type: Flat Slab
Seismic: 0.67g
Bid Cost: $1.9M
Waluga #2Type: Prestressed
Height: 36
Diameter: 131
Volume: 3.5MG
Roof Type: Dome
Seismic: 0.98g
Bid Cost: $2.0M
Garden HomeType: Prestressed
Height: 37-5
Diameter: 89-4
Volume: 1.75MG
Roof Type: Flat Slab
Seismic: 0.97g
Bid Cost: ~$1.8M
Why Prestressed Concrete?
1
Reservoir Options
Fiberglass
Steel
Concrete
Bolted
Welded
Cast-in-Place
Prestressed
Bolted Steel
Welded Steel
Cast-in-Place Concrete
Date Title 14
Prestressed Concrete
Date Title 15
Types of Prestressed TanksPrestressed
Wire Wrapped Post Tensioned
Types of Prestressed Tanks
Type I Type II Type III Type IV D115
Advantages of Prestressed
Low Initial Cost* No Coating Requirements Low Maintenance Long Life Good Water Tightness Good Seismic Performance
Reservoir Type by Size
0
0.5
1
1.5
2
2.5
3
3.5
44+
C
a
p
a
c
i
t
y
(
M
G
)
Pre-stressed Cost EfficiencyC
a
p
a
c
i
t
y
(
M
G
)
D/H Ratio
0
2
4
6
8
10
1 1.5 2 2.5 3 3.5 4
5th Street
4 Million Gallons of Storage Alternatives Study Cost/Maintenance
WR2
3.5 Million Gallons WR1 - Concrete Cost / Maintenance
Garden Home
Replacing 2 Steel Tanks Existing Site 1.75 Million Gallons Owner Preference
Structural Design Considerations
2
Design Considerations
Structural Considerations Design Criteria Floor/Foundation Roof Type Seismic Detailing Construction Staging
Non-Structural Design Considerations
3
Design Considerations
Non-Structural Considerations Tank Mixing Aesthetics Piping Instrumentation Bidding/Schedule Public Involvement
5th Street Lebanon
4
Site Layout Piping Alternate Bidding
5th Street Lebanon (Site Layout)
Date Title 29
2MG
New 2MG Tank #2
New 4MGTank
New 2MG Tank #1
New 4MGTank
5th Street Lebanon (Piping)
Date Title 30
2MG
New 4MGTank
5th Street Lebanon
Alternative Bidding:D115 vs D110 Type 1
Waluga Reservoir 2
5
Foundation Roof Type Site Constraints Public Involvement*
WR2 (Foundation)
WR2 (Dome Roof)
WR2 (Site Constraints)
Garden Home
6
Seismic Detailing Aesthetics Tank Mixing
Garden Home (Seismic)
Garden Home (Seismic)
Garden Home (Seismic)
Garden Home (Seismic)
Cable Specs
Diameter = 0.6Spacing = 4-ftStrand/bundle = 10
Garden Home (Seismic)
Garden Home (Aesthetics)
Garden Home
Date Title 43
Garden Home (Tank Mixing)
Garden Home (Tank Mixing)
Passive vs. Active Mixing
Conclusions
Strong Partnerships Collaboration leads to Innovation Every tank is unique