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