La Prefabricacion Panel Sandwich

PCI COMMITTEE REPORT

STATE-OF-THE-ART OF PRECAST/PRESTRESSED SANDWICH WALL PANELS

PCI COMMITTEE REPORT

State-of-the-Art of Precast/Prestressed Sandwich Wall Panels
Prepared by

PCI Committee on Precast Sandwich Wall Panels
KIM E. SEEBER* Chairman RAY ANDREWS, JR. JAMES R. BATY, II* PETER S. CAMPBELL JOHN E. DOBBS*† GREG FORCE*‡ SKIP FRANCIES SIDNEY FREEDMAN* HARRY A. GLEICH* GERALDE. GOETTSCHE* DAVID W. HANSON PAT HYNES PHILLIP J. IVERSON
* Contributing Author † Current Chairman of Committee ‡ TAC Liaison Member

FRANCIS J. JACQUES PAUL KOURAJIAN* ROBERT T. LONG* EDWARD D. LOSCH MONTY OEHRLEIN W. DON PATON DAVID N. PETERSON* RENE QUIROGA WILLIAM C. RICHARDSON, JR. DONALD J. SMITH IRWIN J. SPEYER* HAROLD E. WESCOTT*

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PCI JOURNAL

CONTENTS
NOTATION. . . . . . .. . . . . . . . . . . . . . . . . . . . . . 4 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . 5 CHAPTER 1 — GENERAL . . . . . . . . . . . . . . . . . . 9 1.1 1.2 1.3 1.4 1.5 History Materials Advantages Description of Panel Types Applications 4.5 Handling 4.6 Finishes 4.7 Detensioning CHAPTER 5 — PRODUCT TOLERANCES, CRACKING AND REPAIRS . . . . . . . . . . . . . . . . 40 5.1Tolerances 5.2 Cracking 5.3 Repairs CHAPTER 6 — HANDLING, SHIPPING AND STORAGE OF SANDWICH PANELS . . . . . . . . . 41 6.1 Panel Length and Width 6.2 Shipping 6.3 Panel Storage CHAPTER 7 — ERECTION OF SANDWICH PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 7.1 Panel Handling and Job Site Storage 7.2 Panel Erection 7.3 Panel Bracing CHAPTER 8 — INSPECTION OF SANDWICH PANELS . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 42 8.1 Plant Inspection 8.2 Job Site Inspection REFERENCES. . . . . . . . . . . . . . . . . . . . . . . . . . . 42 BIBLIOGRAPHY . . . . . . . . . . . . . . . . . . . . . . . . 42 APPENDIX — DESIGN EXAMPLES . . . . . . . . . . 46 A1 A2 A3 A4 A5 A6 Non-Composite Cladding Panel Non-Composite Loadbearing Panel Non-Composite Shear Wall PanelSemi-Composite Cladding Panel Composite Cladding Panel Composite Loadbearing Panel

CHAPTER 2 — DESIGN AND DETAILING CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . 12 2.1 General Information 2.2 Wythe Thickness and Size of Prestressing Strand 2.3 Strand Location and Force 2.4 Wythe Connectors 2.5 Panel Width, Thickness and Span 2.6 Bowing Considerations 2.7 Flexural Design 2.8 Loadbearing Design2.9 Shear Wall Considerations 2.10 External Connections 2.11 Detailing Considerations 2.12 Reinforcement Requirements 2.13 Fire Resistance CHAPTER 3 — INSULATION AND THERMAL PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . 33 3.1 3.2 3.3 3.4 General Information Insulation Types Energy Performance Calculation Procedures

CHAPTER 4 — MANUFACTURE OF SANDWICH PANELS . . . . . . . . . . .. . . . . . . . . 36 4.1 4.2 4.3 4.4 General Stressing and Strand Positioning Methods of Casting Curing

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NOTATION
a a A Ab Acr Aps As Avf b b c C C Cu Cw dp = = = = = = = = = = = = = = = = depth of equivalent rectangular stress block width of panel being stripped area of concrete at cross section considered area of reinforcing bar or stud area of crack interface area of prestressed steelin tension zone area of mild steel reinforcement area of shear-friction reinforcement width of compression face of member length of panel being stripped distance from extreme fiber to neutral axis resultant compressive force coefficient of thermal expansion factored compressive force stud group adjustment factor distance from compression fiber to centroid of prestressed reinforcement dead loadeccentricity of design load or prestressing force measured from centroid of section modulus of elasticity of concrete flexural stiffness of compression member unit stress of structural steel bending stress due to stripping; subscript denotes direction specified compressive strength of concrete concrete compressive strength at time considered compressive stress in concrete at centroid of cross...