Description

This Code prescribes procedures for the seismic analysis and design of liquid-containing concrete structures. These procedures address the loading side of seismic design and are intended to complement Section 1.1.9 and Chapter 13 of ACI 350-20.

Keywords:

circular tanks; concrete tanks; convective component; earthquake resistance; environmental concrete structures; impulsive component; liquid-containing structures; rectangular tanks; seismic resistance; sloshing; storage tanks.

Document Details

Author: ACI Committee 350

Publication Year: 2021

Pages: 52

ISBN: 9781641951616

Categories: Codes

Formats: Protected PDF/Web View

Table of Contents

PREFACE, p. 2

CHAPTER 1—GENERAL REQUIREMENTS, p. 4

1.1—Scope, p. 4

1.2—Notation, p. 4

1.3—Definitions, p. 10

CHAPTER 2—TYPES OF LIQUID-CONTAINING STRUCTURES, p. 11

2.1—Ground-supported structures, p. 11

2.2—Pedestal-mounted structures, p. 12

CHAPTER 3—GENERAL CRITERIA FOR ANALYSIS AND DESIGN, p. 13

3.1—Dynamic characteristics, p. 13

3.2—Design loads, p. 13

3.3—Design requirements, p. 13

CHAPTER 4—EARTHQUAKE DESIGN LOADS, p. 14

4.1—Earthquake pressures above base of tank wall, p. 14

4.2—Application of site-specific response spectra, p. 17

CHAPTER 5—EARTHQUAKE LOAD DISTRIBUTION, p. 19

5.1—General, p. 19

5.2—Shear transfer, p. 19

5.3—Dynamic force distribution above base of tank wall, p. 21

CHAPTER 6—STRESSES, p. 26

6.1—Rectangular tanks, p. 26

6.2—Circular tanks, p. 26

CHAPTER 7—FREEBOARD, p. 27

7.1—Wave oscillation, p. 27

CHAPTER 8–EARTHQUAKE-INDUCED EARTH PRESSURES, p. 32

8.1—General, p. 32

8.2—Limitations, p. 33

8.3—Alternative methods, p. 33

CHAPTER 9—DYNAMIC MODEL, p. 34

9.1—General, p. 34

9.2—Rectangular tanks (Type 1), p. 36

9.3—Circular tanks (Type 2), p. 40

9.4—Seismic response coefficients Ci, Cc, and Ct, p. 44

9.5—Site-specific seismic response coefficients Ci, Cc, and Ct, p. 45

9.6—Effective mass coefficient ε, p. 46

9.7—Pedestal-mounted tanks, p. 46

CHAPTER 10—COMMENTARY REFERENCES, p. 47

APPENDIX A—DESIGN METHOD, p. 49

A.1—General outline of design method, p. 49

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