EXAMPLE 5.2-6— Six-Bolt Flush Four-Wide/Two-Wide Unstiffened Thick End-Plate Example

References

Murray, Thomas M. and Eatherton, Matthew R. Design Guide 39: End-Plate Moment Connections ,American Institute of Steel Construction, 2023.EXAMPLE 5.2-6— Six-Bolt Flush Four-Wide/Two-Wide Unstiffened Thick End-Plate

Details

From the reference:

The connection shown in Figure 5-9 is a six-bolt flush, four-wide/two-wide, unstiffened end-plate moment connection for a built-up beam. Beam and end-plate material are ASTM A572/A572M Grade 50. Bolts are Group 150 ASTM F3125/F3125M Grade A490 pretensioned, and weld electrodes are E70XX. The connection is to be evaluated as a thick end-plate design for the following required moments and shear forces.
  • Mu = 15,000 kip-in and Vu = 87.9 kips

Using an end plate with thickness of 1 1/8 [in]

Using a 7/16 weld size [in]

Refer to the figure in the reference for additional details.

Calculations

Results

Table 1. Comparison with AISC Design EXAMPLE 5.2-6
Parameter RAM Connection Reference Difference
Additional Calculation of H1 (in) 44.9 44.9 < 1%
Additional Calculation of H2 (in.) 41.4 41.4 < 1%
End plate yield line mechanism, s (in.) 3.74 3.74 none
Yp (in) 436 436 < 1%
End plate shear yielding (kips) 223 223 < 1%
Beam Flange to EndPlate Weld (kips) 364 364 < 1%

Input

The following data is input into the New Joint dialog:

Joint Data tab:
  • Joint = BCF
  • Beam/Section d =48in : bf=13in : tf = ¾ in : tw = 1/2in
  • Beam/Material = ASTM A572/A572M Grade 50
  • Column/Section = W14x99
  • Column/Material = ASTM A572/A572M Grade 50
Loads tab:
  • V2 (beam) = 87.9 kips
  • M33 (beam) = 1250 kip·ft

Select the Smart Connections/Smart MEP Extended both ways (DG16) connection type.

The following data is input into the Connection Pad:

Moment End Plate group:
  • Plate thickness, tp = 1 1/8in.
  • Top flange weld type = fillet
  • Bottom flange weld type = fillet
  • Bolts = 1"⌀ A490N
  • Gage (transverse center-to-center spacing), g = 4 in.
  • Gage0 (transverse center-to-center spacing for wide configuration), g = 3.5 in.
  • Vertical edge distance, Lev = 1.75 in.
  • Horizontal edge distance, Leh = 0.5 in.
  • Distance from first interior bolt centerline to the beam flange, pfi = 2 in.
  • bolt vertical spacing, pb = 3.5 in.