Description

This guide discusses the practical aspects of shell design, including recommendations for designers of thin concrete shells. General guidance based on current practice is given on analysis, proportioning, reinforcing, and construction. A selected bibliography on analytical methods, featuring design tables and aids, is included to assist the engineer.

Keywords:

buckling; design; double-curvature shell; edge beam; folded plate; formwork; model; prestressing; reinforcement; shell; single-curvature shell; splice; stiffening member; supporting member; thickness; thin shell.

Document Details

Author: Joint ACI-ASCE Committee 334

Publication Year: 2022

Pages: 27

ISBN: 9781641951791

Formats: Protected PDF/Web View

Table of Contents

CHAPTER 1—INTRODUCTION AND SCOPE, p. 2

1.1—Introduction, p. 2

1.2—Scope, p. 2

CHAPTER 2—DEFINITIONS, p. 2

2.1—Definitions, p. 2

CHAPTER 3—SHELL TYPES, p. 2

3.1—Examples of shell types, p. 2

3.2—Folded plates—Group 1, p. 3

3.3—Single curvature—Group 2, p. 4

3.4—Single curvature with varying radius—Group 3, p. 5

3.5—Double curvature with identical constant curvatures in the orthogonal principal directions—Group 4, p. 6

3.6—Double curvature with varying curvatures in the principal directions—Group 5, p. 8

3.7—Double curvature with principal curvatures in opposite directions (constant and varying radius)—Group 6, p. 10

3.8—Free-form shells—Group 7, p. 12

3.9—Form-found shells—Group 8, p. 12

3.10—Grid shells—Group 9, p. 13

3.11—Combined shells—Group 10, p. 13

3.12—Conclusion, p. 17

CHAPTER 4—ANALYSIS OF SHELLS, p. 17

4.1—Introduction, p. 17

4.2—General procedures, p. 17

4.3—Analytical procedures, p. 17

4.4—Supporting member analysis, p. 18

4.5—Stability analysis, p. 18

4.6—General analytical considerations, p. 18

CHAPTER 5—DESIGN OF SHELLS, p. 19

5.1—Introduction, p. 19

5.2—Materials (ACI 318.2-19 Section 2.2), p. 19

5.3—Connection to other members (ACI 318.2-19 Section 2.3), p. 20

5.4—Stability (ACI 318.2-19 Section 2.4), p. 20

5.5—Minimum thickness (ACI 318.2-19 Section 3.1), p. 20

5.6—Compressive stress (ACI 318.2-19 Section 3.2), p. 20

5.7—Stress limits in prestressed shells (ACI 318.2-19 Section 3.3), p. 20

5.8—Analysis methods (ACI 318.2-19 Section 4.1.2.2), p. 20

5.9—Inelastic analysis (ACI 318.2-19 Section 4.1.2.3), p. 20

5.10—Experimental analysis (ACI 318.2-19 Section 4.1.2.4), p. 21

5.11—Combined forces (ACI 318.2-19 Section 5.1.1), p. 21

5.12—Principal stresses (ACI 318.2-19 Section 6.1.2), p. 21

5.13—Lap lengths (ACI 318.2-19 Section 7.3.2(a)), p. 21

5.14—Lap lengths (ACI 318.2-19 Section 7.3.2(c)), p. 21

5.15—Lap lengths (ACI 318.2-19 Section 7.4), p. 21

CHAPTER 6—CONSTRUCTION, p. 21

6.1—Introduction, p. 21

6.2—Formwork, form removal, and decentering, p. 21

6.3—Materials, p. 21

6.4—Placement of reinforcement, p. 22

6.5—Placement of concrete, p. 22

6.6—Curing of concrete, p. 22

6.7—Tolerances, p. 22

CHAPTER 7—REFERENCES, p. 22

7.1—Referenced standards and reports, p. 22

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