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Concrete Water Storage Tanks

By: Ryan J. Erickson, P.E., Project Engineer,

Sunrise Engineering, Inc.

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Concrete Tank Experience

Municipalities

Subdivisions

Extensive experience in Wyoming,Idaho, Utah

Range from 100,000 to 3 million

gallons

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Construction Cost Analysis

Steel Bolted

200,000 gallons =

$175,000

1 Million gallons =

$500,000

Glass Lined Steel

200,000 gallons =$300,000

1 Million gallons =

$700,000

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Construction Cost Analysis

Prestressed Concrete

1 Million gallons = $925,000

Concrete 200,000 gallons = $270,000

1 Million gallons = $650,000

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Cost Analysis

Cost Per Gallon 200,000 Gallon

Steel = $0.88

Glass Lined Steel = $1.50

Concrete = $1.35

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Cost Analysis

Cost Per Gallon 1 Million Gallon

Steel = $0.50

Glass Lined Steel = $0.70

Prestressed Concrete = $0.93

Concrete = $0.65

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Concrete Pros & Cons

Pros

Durability

Design Flexibility

Corrosion

Resistance

Burial Ability

Freeze Protection

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Concrete Pros & Cons

Pros

Local Materials

Lower Freight

Costs

Low Maintenance

Costs

Long Service Life

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Concrete Pros & Cons

Cons

Complex Design

Complex

Construction

Quality Control

Material Delivery

Upfront Cost

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Field Evaluations

Flood Plain

Ground Water

Surface Water Access

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Design Considerations

Burial

Elevation

Security

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Design Considerations

Seismic Zone

Structural

Calculations

Overflow

Venting

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Types of Construction

Cast in Place

Local Materials

Pumps required

Additives

Steel Reinforced

Steel Cover

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Types of Construction

Cast in Place

Seismic Standards

ACI Design

Floating Lid

Neoprene Pad

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Types of Construction

Cast in Place

Hatch Size

4 x 4 Bilco

Form Removal

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Types of Construction

Cast in Place

Water Stop

9 PVC

Cold Joints

Vibrate Layers

Xypex Patch

Seepage

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Types of Construction

Prestressed concrete

Monolithic or Panel Walls

Thinner Walls

Post-Tensioned Steel Tendons

Bottom

Walls

Roof

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Types of Construction

Prestressed concrete

Larger Column Spacing

Higher Upfront Cost

1 Million Gallon Minimum

Longer Service Life

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Operation & Maintenance

Cleaning

Flush

Patching

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Conclusion

Concrete Tanks

Higher Upfront

Costs

Low Maintenance

Bulletproof

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Conclusion

Concrete Tanks

Project History

Service Life