Description
This guide presents recommendations for materials, analysis, design, and construction of concrete-pedestal elevated water storage tanks. Both the all-concrete tank and the composite tank, consisting of a steel water storage vessel supported on a cylindrical reinforced concrete pedestal, are included.
Concrete-pedestal elevated water storage tanks are structures that present special problems not encountered in typical environmental engineering concrete structures. This guide refers extensively to ACI 350 for design and construction of those components of the pedestal tank in contact with the stored water, and to ACI 318 for design and construction of components not in contact with the stored water. Determination of snow, wind, and seismic loads based on ASCE/SEI 7 is included. These loads will conform to the requirements of national building codes that use ASCE/SEI 7 as the basis for environmental loads or conform to the requirements of local building codes. Special requirements, based on successful experience, for the unique aspects of loads, analysis, design, and construction of concretepedestal tanks are presented.
Keywords: analysis; composite tanks; concrete-pedestal tanks;construction;
design; earthquake-resistant structures; elevated water tanks; formwork
(construction); load, dead; load, earthquake; load, live; load, snow; load, water; load, wind; load combinations; loads (forces); shear; shear strength; structural analysis; structural design; walls.
Table of Contents
Chapter 1—General
1.1—Introduction
1.2—Scope
1.3—Drawings, specifications, and calculations
Chapter 2—Notation and definitions
2.1—Notation
2.2—Definitions
Chapter 3—Materials
3.1—Materials common to both composite and concrete tank types
3.2—Materials specific to composite tanks
3.3—Materials specific to concrete tanks
Chapter 4—Construction
4.1—Construction common to both composite and concrete tank types
4.2—Construction specific to composite tanks
4.3—Construction specific to concrete tanks
Chapter 5—Design
5.1—Design recommendations common to both composite and concrete tank types
5.2—Design of components common to both composite and concrete tank types
5.3—Design of components specific to composite tanks
5.4— Design of components specific to all-concrete tanks
Chapter 6—Geotechnical recommendations
6.1—General
6.2—Foundation depth
6.3—Settlement limits
6.4—Shallow foundations
6.5—Deep foundations
6.6—Seismic recommendations
6.7—Special considerations
Chapter 7—Appurtenances and accessories
7.1—General
7.2—Pedestal access
7.3—Ventilation
7.4—Tank access
7.5—Rigging devices for steel vessel
7.6—Above-ground piping
7.7—Below-ground piping
7.8—Interior floors within pedestal
7.9—Electrical and lighting
Chapter 8—References
8.1—Referenced standards and reports
8.2—Cited references
Appendix A—Supplementary information