Cooper B-Line Seismic Restraints - Dixie Construction Products

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To convert this F p from a strength design, as just determined from the building code, to an Allowable Stress Design (ASD) used in the Cooper B-Line Seismic Restraints Manual divide by 1.4. F p = 0.24g = 0.17g (ASD) 1.4 0.17g is the Allowable Stress Design Seismic Load Factor determined from 2003 International Building Code. Special Note: Installations using concrete anchors installed with an embedment length-to-diameter ratio of less than 8, also referred to as shallow embedment anchors, have an adjusted Component Response Factor. The adjusted factor being R p = 1.5. Example Two: Shallow Embedded Anchors In this example a cable tray system is suspended on the 1st floor of a 40-foot tall, 2-story surgical center in California. The cable tray is actually suspended from the 2nd floor, which has an elevation of 20 feet above grade. The location of the surgical center is in seismic zone 4 with a rock soil profile, however shallow embedded anchors (length-to-diameter ratio of less than 8) are used at brace locations. F p = 0.4a pS DS I p (1 + 2 z • )W p R p h a p = (2.5) for a cable tray (Table 9.6.3.2 ASCE 7) R p = (1.5) for a cable tray system anchored with shallow embedded anchors (Section 9.6.1.6.1 ASCE 7) I p = (1.5) for an essential facility in Seismic Use Group III which will require continued use following an earthquake (Section 9.6.1.5 ASCE 7) S DS = (0.4) extended calculations shown below (Section 9.4.1.2 ASCE 7) Where, S DS = (2/3) S MS = (0.4) (Section 9.4.1.2.5 ASCE 7) S MS = F a S S = (0.6) (Section 9.4.1.2.4 ASCE 7) F a = (1.0) using straight line interpolation of the Mapped spectral Acceleration (S S ) and Site Class (Table 9.4.1.2.4a ASCE 7) S S = (0.6) Mapped Spectral Acceleration for short periods (Section 9.4.1.2 ASCE 7) Site Class = B for Rock (Table 9.4.1.2 ASCE 7) z h = 20 feet, for the elevation of the floor used to support the cable tray = 40 feet, for the average elevation of the structure roof F p = 0.4(2.5)(0.40)(1.5) (1 + 2 • 20 )W p = 0.80W p = 0.80g 1.5 40 COOPER B-Line 509 West Monroe Street Highland, Illinois 62249 Phone: 800-851-7415 Fax: 618-654-1917 Date: Page No. Sheet Number: 6 - 2 - 06 149 of Raafat S. Aboulhosn Structural Engineer S 3913
Check if value falls within the allowed limits: F p shall not be taken less than, 0.3S DS I p W p = 0.3(.40)(1.5)W p = .18g F p shall not be greater than, 1.6S DS I p W p = 1.6(.40)(1.5)W p = .96g 0.96g > 0.80g > 0.18g, thus allowing the use of 0.80g To convert F p from a strength design, as just determined from the building code, to an Allowable Stress Design (ASD) as used in the Cooper B-Line Seismic Restraints Manual divide by 1.4. F p = 0.80g = 0.57g (ASD) 1.4 0.57g is the Allowable Stress Design Seismic Load Factor determined from 2003 International Building Code. COOPER B-Line 509 West Monroe Street Highland, Illinois 62249 Phone: 800-851-7415 Fax: 618-654-1917 Date: Page No. Sheet Number: Raafat S. Aboulhosn Structural Engineer S 3913 6 - 2 - 06 150 of
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SEISMIC RESTRAINTS Multi-Directiona
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TABLE OF CONTENTS General Informati
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GENERAL INFORMATION I p = Importanc
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GENERAL INFORMATION Cable tray syst
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GENERAL INFORMATION c) Check the re
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GENERAL INFORMATION f) When a flexi
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GENERAL NOTES FOR SEISMIC BRACING G
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SINGLE PIPE/CONDUIT BRACING Single
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SINGLE PIPE BRACING PIPE CLAMP TRAN
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CLEVIS HANGER TRANSVERSE BRACING (F
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TRAPEZE BRACING TRAPEZE TRANSVERSE
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TRAPEZE BRACING TRAPEZE TRANSVERSE
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TRAPEZE BRACING Typical Trapeze ATR
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STRUCTURAL ATTACHMENTS ‘T’ Conc
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Concrete Attachments Detail 4 Metal
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Concrete Attachments STRUCTURAL ATT
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STRUCTURAL ATTACHMENTS Minimum dist
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STRUCTURAL ATTACHMENTS Concrete Att
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STRUCTURAL ATTACHMENTS Wood Beam At
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STRUCTURAL ATTACHMENTS Wood Beam At
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Structural Steel Detail 16 Case 1 C
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Concrete Attachments To Slab HANGER
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Strut Attachments Typical All Threa
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HANGER ROD ATTACHMENTS & APPROVED C
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HANGER ROD SWIVEL ATTACHMENTS A 2 3
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APPROVED COMPONENTS SC228 HANGER RO
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APPROVED COMPONENTS NOTE: B633 can
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APPROVED COMPONENTS Hardware SEISMI
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APPROVED COMPONENTS 'A' (Rod Size)
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APPROVED COMPONENTS 'A' (Rod Size)
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APPROVED COMPONENTS Copper Adjustab
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APPROVED COMPONENTS Vertical Load S
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APPROVED COMPONENTS Seismic Approva
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APPROVED COMPONENTS 'A 'T' 2 'A 'T'
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APPROVED COMPONENTS 2” (50.8mm) 3
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APPROVED COMPONENTS 2 9 /16" (65mm)
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APPENDIX - SEISMIC MAP SEISMIC MAP
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Appendix 1 Support Spacing for Sing
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SUPPORT SPACING FOR SINGLE ROD HANG
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Page 101 and 102: SUPPORT SPACING FOR SINGLE ROD HANG
Page 111 and 112: Appendix 2 Seismic Bracing Charts f
Page 113 and 114: TRAPEZE BRACING Seismic Bracing Cha
Page 117 and 118: Seismic Bracing Charts for Trapeze
Page 149 and 150: Appendix 3 Proof Test Instructions
Page 151: Example: Deeply Embedded Anchors In
Page 155 and 156: 1997 Uniform Building Code As defin
Page 157 and 158: Example Two, Shallow Embedded Ancho
Page 159 and 160: Appendix 5 This page has been reser
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Cooper B-Line Seismic Restraints - Dixie Construction Products

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