Tubular Truss – Y-Connection with round HSS

Steel Design Guide 24 - Example 8.1

References

Packer, Jeffery A., Donald Sherman, and Maura Lecce. Design Guide 24: Hollow Structural Section Connections. Chicago, IL: American Institute of Steel Construction, 2010. p. 100-102

Details

From the reference:

Determine the adequacy of the welded HSS Y-connection under the member loads shown in Figure 8-6. Loads consist of 25% dead load and 75% live load. Assume the welds are strong enough to develop the yield strength of the connected branch wall at all locations around the branch.

Refer to the figure in the reference for additional details.

Results

Table 1.
Parameter RAM Connection Reference Difference
Chord plastification (kips) 91.91 91.8 None
Shear yielding (punching) (kips) 179.23 180 None