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Seismic Restraint Manual - OSHPD Edition, 2009

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FOREWORD
NOTICE TO USERS OF THIS PUBLICATION
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION [Go to Page]
1.1 OVERVIEW
1.2 WHAT ARE SEISMIC LOADS?
1.3 WHAT HAPPENS DURING AN EARTHQUAKE?
1.4 HOW TO RESIST SEISMIC LOADS
1.5 KINDS OF BRACING
1.6 WHY DIFFERING REQUIREMENTS
CHAPTER 2 INSTRUCTIONS FOR USING THE GUIDELINES [Go to Page]
2.1 SCOPE
2.2 USE OF THE GUIDELINES
2.3 RESPONSIBILITIES OF THE DESIGN PROFESSIONAL
2.4 THE SEISMIC HAZARD LEVEL (SHL)
2.5 DETERMINING CONNECTION LEVELS TO THE SUPPORTING STRUCTURE
2.6 HOW TO READ THE SIZING TABLES
2.7 USING THE SIZING TABLES
2.8 EXAMPLE: DETERMINING THE SHL
2.9 EXAMPLE: DUCT BRACING
FIGURE 2-1 SUMMARY OF STEPS FOR USING TABLES
CHAPTER 3 GENERAL REQUIREMENTS [Go to Page]
3.1 GENERAL REQUIREMENTS
3.2 MATERIAL SPECIFICATIONS
3.3 GENERAL REQUIREMENTS FOR BRACING OF DUCTS
3.4 GENERAL REQUIREMENTS FOR BRACING OF PIPES
3.5 NOTES ON ATTACHMENT TO THE BUILDING STRUCTURE
Table 3-1 Standard Sheet Metal Gages
Table 3-2 Minimum Allowable Cable Strength
Table 3-3 Minimum Allowable Design Values for Expansion Anchors
CHAPTER 4 DETAIL DRAWINGS OF BRACING [Go to Page]
4.1 OVERVIEW
4.2 INSTRUCTIONS FOR BRACING INDIVIDUALLY SUPPORTED PIPE
FIGURE 4-1 TYPICAL LOCATIONS OF BRACING
FIGURE 4-2 SIDE BRACING FOR RECTANGULAR DUCTS
FIGURE 4-3 SIDE BRACING FOR RECTANGULAR DUCTS
FIGURE 4-4 CABLE SIDE BRACING FOR RECTANGULAR DUCTS
FIGURE 4-5 SIDE BRACING FOR RECTANGULAR DUCTS
FIGURE 4-6 CENTER BRACING FOR RECTANGULAR DUCTS
FIGURE 4-7 CABLE CENTER BRACING FOR RECTANGULAR DUCTS
FIGURE 4-8 FLOOR SUPPORTED DUCT
FIGURE 4-9 SINGLE HANGER BRACING FOR ROUND DUCTS 33-36 INCHES (838-900 MM)
FIGURE 4-10 SINGLE HANGER CABLE BRACING FOR ROUND DUCTS 33-36 INCHES (838-900 MM)
FIGURE 4-11 DOUBLE HANGER BRACING FOR ROUND DUCTS UP TO 84 INCHES (2100 MM)
FIGURE 4-12 DOUBLE HANGER BRACING FOR ROUND DUCTS UP TO 84 INCHES (2100 MM)
FIGURE 4-13 DUCT RISERS
FIGURE 4-14 TRANSVERSE BRACING FOR PIPES
FIGURE 4-15 STRUT BRACING FOR PIPES
FIGURE 4-16 ALTERNATE ATTACHMENT TO HANGERS FOR PIPE BRACING
FIGURE 4-17 LONGITUDINAL BRACING FOR PIPES
FIGURE 4-18 CABLE BRACING FOR PIPES
FIGURE 4-19 STRUT BRACING FOR PIPE TRAPEZE
FIGURE 4-20 CABLE BRACING FOR PIPE TRAPEZE
FIGURE 4-21 FLOOR SUPPORTED RISERS
FIGURE 4-22 PIPE RISERS
CHAPTER 5 TABLES FOR SEISMIC HAZARD LEVEL AA (g = 1.0) [Go to Page]
5.1 USE OF TABLES
Table 5-1 Side Bracing For Rectangular Ducts, (SHL AA " g=1.00), L=2' 8” (Max.)
Table 5-2 Side Bracing for Rectangular Ducts with Rod Hangers, (SHL AA - g=1.0)
Table 5-3 Center Bracing For Rectangular Ducts, (SHL AA " g=1.0), L=7 ft
Table 5-4 Center Bracing For Rectangular Ducts, (SHL AA " g=1.0), L=10 ft
Table 5-5 Floor Supported Ducts, (SHL AA " g=1.0)
Table 5-6 Bracing For Round Ducts, (SHL AA " g=1.0)
Table 5-7 Schedule for Bracing Pipes and Conduit, (SHL AA - g=1.0)
Table 5-8 Schedule for Bracing Pipes on Trapeze, (SHL AA " g=1.0)
Table 5-9 Floor Supported Pipes, (SHL AA - g=1.0)
Table 5-10 Duct Risers, SHL AA
Table 5-11 Pipe Risers, SHL AA
CHAPTER 6 TABLES FOR SEISMIC HAZARD LEVEL A (g = 0.67) [Go to Page]
6.1 USE OF TABLES
Table 6-1 Side Bracing For Rectangular Ducts, (SHL A - g=0.67), L=2' 8” (Max.)
Table 6-2 Side Bracing for Rectangular Ducts with Rod Hangers, (SHL A " g=0.67)
Table 6-3 Center Bracing For Rectangular Ducts, (SHL A " g=0.67), L=7 ft
Table 6-4 Center Bracing For Rectangular Ducts, (SHL A " g=0.67), L=10 ft
Table 6-5 Floor Supported Ducts, (SHL A " g=0.67)
Table 6-6 Bracing For Round Ducts, (SHL A " g=0.67)
Table 6-7 Schedule for Bracing Pipes and Conduit, (SHL A " g=0.67)
Table 6-8 Schedule for Bracing Pipes on Trapeze, (SHL A " g=0.67)
Table 6-9 Floor Supported Pipes, (SHL A - g=0.67)
Table 6-10 Duct Risers, SHL A
Table 6-11 Pipe Risers, SHL A
CHAPTER 7
CHAPTER 8 DETAILS OF CONNECTIONS TO STRUCTURAL MEMBERS [Go to Page]
8.1 INTRODUCTION
Table 8-1 Schedule for Typical Connections to Structural Supporting Members1
FIGURE 8-1 CONNECTIONS TO CONCRETE
FIGURE 8-1 CONNECTIONS TO CONCRETE (CONTINUED)
FIGURE 8-2 ALTERNATE CONNECTIONS TO CONCRETE
FIGURE 8-3 CONNECTIONS TO STEEL
FIGURE 8-4 ALTERNATE CONNECTION TO OPEN WEB STEEL JOINTS
FIGURE 8-5 CONNECTIONS TO STEEL
FIGURE 8-6 DUCTS HUNG BELOW STEEL BEAMS
FIGURE 8-7 HANGER CONNECTION TO WOOD
FIGURE 8-8 CONNECTIONS TO WOOD I-JOIST
FIGURE 8-9 CONNECTIONS TO WOOD
CHAPTER 9 MISCELLANEOUS CONNECTIONS [Go to Page]
9.1 INTRODUCTION
FIGURE 9-1 CABLE CONNECTION TO DUCT FRAME
FIGURE 9-2 ALTERNATE CABLE CONNECTION TO DUCT FRAME
FIGURE 9-3 LONGITUDINAL CABLE CONNECTION TO DUCT HANGER
FIGURE 9-4 CABLE END CONNECTION
FIGURE 9-5 PIPE STRUT CONNECTIONS
FIGURE 9-6 CONNECTIONS FOR FRAMING CHANNEL
FIGURE 9-7 HUBLESS CAST IRON PIPE
FIGURE 9-8 FRAMING CHANNEL
FIGURE 9-9 CONNECTIONS FOR PIPES ON TRAPEZE
FIGURE 9-10 ALTERNATE STIFFENER CONNECTION
FIGURE 9-11 SEISMIC JOINTS IN PIPES
FIGURE 9-12 WELDED TABS
APPENDIX A SAMPLE SPECIFICATIONS
APPENDIX B REFERENCES
APPENDIX C GLOSSARY
APPENDIX D APPROVALS
INDEX [Go to Page]

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Seismic Restraint Manual - OSHPD Edition, 2009