All Bolted Double Angle Connection in a Coped Beam

References

American Institute of Steel Construction. 2011. Design Examples V14.1. Chicago, IL:American Institute of Steel Construction. p. IIA-9

Details

From the reference:

Use AISC Manual Table 10-1 to select an all-bolted double-angle connection between an ASTM A992 W18×50 beam and an ASTM A992 W21×62 girder web to support the following beam end reactions:
  • RD = 10 kips
  • RL = 30 kips
The beam top flange is coped 2 in. deep by 4 in. long, Lev = 1¼ in., Leh = 1¾ in. Use ¾-in.-diameter ASTM 325-N or F1852-N bolts in standard holes and ASTM A36 angles

Refer to the figure in the reference for additional details.

Calculations

Calculations

Vu = 1.2(10) + 1.6(30) = 60 kips

Results

Table 1. Comparison with AISC Design Example II.A-4
Parameter RAM Connection Reference Difference
Bolt bearing on girder web (kips) 210.6 210 < 1%
Flexural local web buckling (kips) 234.6 234 < 1%
Shear yielding of beam web (kips) 170.4 170 < 1%
Shear rupture of beam web (kips) 138.9 139 < 1%

Input

The following data is input into the New Joint dialog:

Joint Data tab:
  • Joint = BG
  • Beam/Section = W 18x50
  • Beam/Material = ASTM A992 Gr50
  • Column/Section = W21x62
  • Column/Material = ASTM A992 Gr50
Loads tab:
  • V2 (beam) = 60 kips

Select the Smart Connections/Smart DA All bolted connection type.

The following data is input into the Connection Pad:

Members group:
  • Top cope depth, dct = 2 in.
  • Top copy length, ct = 4 in.
Angle / Beam Side group:
  • Angle section = LU 4X3-1_2X1_4
  • Angle position on beam = top
  • Distance to beam top, dtop = 2 in.
  • Vertical edge distance, Lev = 1.25 in.
  • Horizontal edge distance, Leh = 1.75 in.
Angle / Support Side group:
  • Number of bolt rows, nr = 3
  • Vertical edge distance, Lev = 1.25 in.
  • Horizontal edge distance, Leh = 1.0625 in.