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FRAMING CONECTIONS

FRAMING CONECTIONS. CONNECTION TYPES. Shear End-Plate Double Angles Single Angle Shear Tab or Single Plate Tee Seated – Unstiffened and Stiffened. 1 1/4" Minimum. Edge Distance. End Plate. Note. : End Plate Thickness Range is 1/4" to 3/8". SHEAR END-PLATE. Advantages:

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FRAMING CONECTIONS

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  1. FRAMING CONECTIONS

  2. CONNECTION TYPES • Shear End-Plate • Double Angles • Single Angle • Shear Tab or Single Plate • Tee • Seated – Unstiffened and Stiffened

  3. 1 1/4" Minimum Edge Distance End Plate Note : End Plate Thickness Range is 1/4" to 3/8" SHEAR END-PLATE Advantages: • Simple – Few Parts • No Holes in Beam Disadvantages: • Requires Beam to be Cut to Exact Length Comments: • Not commonly used in US; very common in Australia and Europe

  4. Horizontal short slots may be used in angles 2 Angles 2 Angles DOUBLE ANGLES Advantages: • Beam Length can Vary • Weld or Bolt to Beam Disadvantages: • Double Sided Connections into Column Webs are an Erection Problem

  5. Return @ Top Bolted and Welded Alternatives SINGLE ANGLE Advantages: • Eliminates Erection Problem • Fewer Parts Disadvantages: • Larger Angle Required • Larger Bolts or Weld Comment: • Not recommended for laterally unbraced beams.

  6. Single Plate SHEAR TAB or SINGLE PLATE Advantages: • Simple – Few Parts • No Welding on Beam Disadvantages: • Stiffer than Other Types • Requires Careful Design Comments: • Two design models available, with very different results.

  7. 4" Stabilizer Clip 2" Alternate Clip Position Return @ Top Seat Angle UNSTIFFENED SEATED CONNECTION Advantages: • Few Parts • Few Bolts Disadvantages: • Requires Stability Angle • Limited strength Comment: • Commonly used to connect to the web of a column.

  8. 4" Stabilizer Clip 2" Alternate Clip Position Seat Plate Stiffener Optional Trim Lines STIFFENED SEATED CONNECTION Advantages: • Few Parts • Few Bolts Disadvantages: • Requires Stability Angle • Introduces a Column Web Limit State Comment: • Commonly used to connect to the web of a column.

  9. DESIGN CONSIDERATIONS • Ductility Considerations • Angle thickness < 5/8 in. • Wide gage • Wide vertical weld spacing with minimum horizontal returns

  10. DESIGN CONSIDERATIONS • Beam Length Tolerance +/- 1/4 in. To accommodate: Setbacks in calculations are usually 1/2 in. End edge distances are taken 1/4 in. less than detailed.

  11. 1 1/4" Minimum Edge Distance End Plate Note :End Plate Thickness Range is 1/4" to 3/8" SHEAR END-PLATES

  12. Shear End-Plate Limit States Beam: Beam Gross Shear Coped Beam Flexural Strength Web Strength at Weld Weld: Weld Rupture

  13. 2 2 1 1 3 3 4, 5 3 3 1 1 2 2 Shear End-Plate Limit States Plate: 1. Gross Shear 2. Net Shear 3. Block Shear 4. Bearing and Tear Out Bolts: 5. Bolt Shear Girder or Column: Bearing and Tear Out

  14. Welded / Bolted Double Angles Angles: Gross Shear Net Shear Block Shear Bearing / Tear Out Bolt: Shear Rupture

  15. THANK YOU

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