372R-03
Design and Construction of Circular Wire and Strand Wrapped Prestressed Concrete Structure
2003, 24 pp.
$72.50

This report provides recommendations for the design and construction of wrapped, circular, prestressed concrete structures commonly used for liquid or bulk storage. These structures are constructed using thin cylindrical shells of either concrete or shotcrete. Shotcrete and precast concrete core walls incorporate a thin steel diaphragm that serves both as a liquid barrier and vertical reinforcement. Cast-in-place concrete core walls incorporate either vertical prestressing or a steel diaphragm. Recommendations are given for circumferential prestressing achieved by wire or strand wrapping. In wrapping, the wire or strand is fully tensioned before placing it on the structural core wall. Procedures for preventing corrosion of the prestressing elements are emphasized. The design and construction of dome roofs are also covered. Many recommendations of this report can also be applied to similar structures containing low-pressure gases, dry materials, chemicals, or other materials capable of creating outward pressures. This report is not intended for application to nuclear reactor pressure vessels or cryogenic containment structures.

Contents:
Chapter 1—General

1.1—Introduction

1.2—Objective

1.3—Scope

1.4—Associated structures

1.5—History and development

1.6—Definitions

1.7—Notations

Chapter 2—Design

2.1—Strength and serviceability

2.2—Floor and footing design

2.3—Wall design

2.4—Roof design

Chapter 3—Materials

3.1—Concrete

3.2—Shotcrete

3.3—Admixtures

3.4—Grout for vertical tendons

3.5—Reinforcement

3.6—Waterstop, bearing pad, and filler materials

3.7—Sealant for steel diaphragm

3.8—Epoxy adhesives

3.9—Coatings for outer surfaces of tank walls and domes

3.10—Additional information on coatings

Chapter 4—Construction procedures

4.1—Concrete

4.2—Shotcrete

4.3—Forming

4.4—Nonprestressed reinforcement

4.5—Prestressed reinforcement

4.6—Tolerances

4.7—Seismic cables

4.8—Waterstops

4.9—Elastomeric bearing pads

4.10—Sponge-rubber fillers

4.11—Cleaning and disinfection

Chapter 5—Acceptance criteria for liquid-tightness

of tanks

5.1—Test recommendations

5.2—Liquid-loss limit

5.3—Visual criteria

5.4—Repairs and retesting

Chapter 6—References

6.1—Referenced standards and reports

6.2—Cited references

Appendix A—Recommendations and

considerations related to the design and

construction of tank foundations