FRAMING CONECTIONS 1 CONNECTION TYPES Shear EndPlate Double

FRAMING CONECTIONS 1

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

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

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DOUBLE ANGLES Horizontal short slots may be used in angles Advantages: • Beam Length 2 Angles can Vary • Weld or Bolt to Beam Disadvantages: • Double Sided Connections into Column Webs are an Erection Problem 5

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SINGLE ANGLE Return @ Top Advantages: • Eliminates Erection Problem • Fewer Parts Disadvantages: • Larger Angle Required Bolted and Welded Alternatives • Larger Bolts or Weld Comment: • Not recommended for laterally unbraced beams. 8

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SHEAR TAB or SINGLE PLATE Advantages: Single Plate • Simple – Few Parts • No Welding on Beam Disadvantages: • Stiffer than Other Types • Requires Careful Design Comments: • Two design models available, with very different results. 10

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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. 4" Stabilizer Clip 2" Return @ Top Alternate Clip Position Seat Angle 12

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. 4" Stabilizer Clip 2" Alternate Clip Position Seat Plate Stiffener Optional Trim Lines 13

DESIGN CONSIDERATIONS • Ductility Considerations – Angle thickness < 5/8 in. – Wide gage – Wide vertical weld spacing with minimum horizontal returns 14

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. 15

SHEAR END-PLATES 1 1/4" Minimum Edge Distance End Plate Note: End Plate Thickness Range is 1/4" to 3/8" 16

Shear End-Plate Limit States Beam: Beam Gross Shear Coped Beam Flexural Strength Web Strength at Weld: Weld Rupture 17

Shear End-Plate Limit States Plate: 1. Gross Shear 2. Net Shear 3. Block Shear 4. Bearing and Tear Out Bolts: 3 5. Bolt Shear Girder or Column: Bearing and Tear Out 32 11 23 4, 5 3 2 11 2 18

Welded / Bolted Double Angles: Gross Shear Net Shear Block Shear Bearing / Tear Out Bolt: Shear Rupture 19

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