Cooper B-Line Seismic Restraints - Dixie Construction Products

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GENERAL INFORMATION B-LINE SEISMIC RESTRAINT SYSTEMS a re designed to resist seismic loading while minimizing installation time and providing superior perf o rmance. On the following pages, several methods of seismic bracing are illustrated. The choice of brace design should be governed by the system requirements and location of supports. Actual applications may vary and are not strictly limited to the combinations of fittings and supports shown. Any changes to the depicted designs should be in accordance with standard engineering practices and be approved by OSHPD (California Office of Statewide Health Planning & Development) if necessary. For additional information on hangers, channels, fittings, and hardware shown, see the latest B-Line Strut Systems Catalog or Pipe Hangers and Supports Catalog. Seismic restraints are designed to resist the horizontal seismic force in two primary directions: Transverse (perpendicular) and Longitudinal (parallel) to the run. The braces are attached to the building with a structure attachment (for concrete, steel, wood, etc.) of various anchor sizes. Typically, the stronger the structure attachment, the greater the brace spacing allowed. The following steps detail how to use the brochure: Step 1: Select the bracing details for single pipe hangers or trapeze supports. Step 2: Obtain required force level (%g) from applicable code for local jurisdiction or from the structural engineer of record. Example: 2001 California Building Code As defined in the 2001 California Building Code, Chapter 16A, Section 1632A, the seismic horizontal force, F p , may be calculated using the following formula: F p = a pC a I p (1 + 3 • hx )W p R p h r Where: Except that: F p shall not be less than 0.7 C a I p W p and need not be more than 4 C a I p W p . F p = Seismic Force Level a p = Amplification Factor (Table 16A-O) R p = Component Response Modification Factor (Table 16A-O) = 3.0 for electrical, mechanical and plumbing equipment and associated conduit, ductwork and piping utilizing deeply embedded anchors. (Table 16A-O) = 1.5 for installations using concrete anchors with an embedment-to-diameter ratio less than 8. i.e. a 1 /2" diameter concrete anchor with an embedment of less than 4" inches. 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 1 of Raafat S. Aboulhosn Structural Engineer S 3913
GENERAL INFORMATION I p = Importance Factor (Table 16A-K) = 1.5 for Essential facilities such as Hospitals, Fire Stations, Police Stations, Aviation Control Towers, etc. consult Table 16A-K in CBC for a detailed listing. = 1.0 for most other occupancies C a = Seismic Coefficient. This is a cumulation of several factors: Zone, Soil Properties, and distance from known fault. (Table 16A-I, Table 16A-J, Table 16A-Q, Table 16A-S, and Table 16A-U) h x = Element or component attachment elevation with respect to grade. Note: h x shall not be taken less than 0.0 h r = Structure Roof Elevation with respect to grade. Special Note: This manual is based on allowable stress design (ASD), where as the seismic force level (%g or F p ) for non-structural components provided in building codes are based on strength design. For use in this manual, the seismic force levels (F p ) from the building code are converted to allowable stress design by dividing the result by 1.4. Example: If the building code yields, (F p ) = 1.4g, this value is converted to allowable stress design (ASD) as used in this catalog as follows: F p =1.4g/1.4=1.0 g Strength Design to Allowable Stress Design Conversions .21g from building code = .15g (ASD) .42g from building code = .30g (ASD) .63g from building code = .45g (ASD) .70g from building code = .50g (ASD) 1.05g from building code = .75g (ASD) 1.40g from building code = 1.00g (ASD) Example One, Deeply Embedded Anchors: Cable tray system is installed on the 1st floor of a 40-foot tall, 2-story surgical center in California. The cable tray is actually suspended from the bottom of the 2nd floor, which has an elevation of 20 feet above grade. Location of the surgical center is in seismic zone 4 with a rock soil profile. F p = a pC a I p (1 + 3 • hx )W p R p h r a p = 1.0 from Table 16A-O 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 2 of
Page 1 and 2: SEISMIC RESTRAINTS Multi-Directiona
Page 3: TABLE OF CONTENTS General Informati
Page 7 and 8: GENERAL INFORMATION Cable tray syst
Page 9 and 10: GENERAL INFORMATION c) Check the re
Page 11 and 12: GENERAL INFORMATION f) When a flexi
Page 13 and 14: GENERAL NOTES FOR SEISMIC BRACING G
Page 15 and 16: SINGLE PIPE/CONDUIT BRACING Single
Page 17 and 18: SINGLE PIPE BRACING PIPE CLAMP TRAN
Page 19 and 20: CLEVIS HANGER TRANSVERSE BRACING (F
Page 21 and 22: TRAPEZE BRACING TRAPEZE TRANSVERSE
Page 23 and 24: TRAPEZE BRACING TRAPEZE TRANSVERSE
Page 25 and 26: TRAPEZE BRACING Typical Trapeze ATR
Page 27 and 28: STRUCTURAL ATTACHMENTS ‘T’ Conc
Page 29 and 30: Concrete Attachments Detail 4 Metal
Page 31 and 32: Concrete Attachments STRUCTURAL ATT
Page 33 and 34: STRUCTURAL ATTACHMENTS Minimum dist
Page 35 and 36: STRUCTURAL ATTACHMENTS Concrete Att
Page 37 and 38: STRUCTURAL ATTACHMENTS Wood Beam At
Page 39 and 40: STRUCTURAL ATTACHMENTS Wood Beam At
Page 41 and 42: Structural Steel Detail 16 Case 1 C
Page 43 and 44: Concrete Attachments To Slab HANGER
Page 51 and 52: Strut Attachments Typical All Threa
Page 53 and 54: HANGER ROD ATTACHMENTS & APPROVED C
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HANGER ROD ATTACHMENTS & APPROVED C
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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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Appendix 2 Seismic Bracing Charts f
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TRAPEZE BRACING Seismic Bracing Cha
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Seismic Bracing Charts for Trapeze
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Appendix 3 Proof Test Instructions
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Example: Deeply Embedded Anchors In
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Check if value falls within the all
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1997 Uniform Building Code As defin
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Example Two, Shallow Embedded Ancho
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Appendix 5 This page has been reser
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Cooper B-Line Seismic Restraints - Dixie Construction Products

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