how the gusset length calculated?

Question

I have an issue in chord and branch connection. 
 in the calculation of the gusset compression strength the gusset length was wrongly assigned in the (Kl/r) equation which affect the strength value. 
 in the calculation K*L/r>25>>>1.2*473.6[mm]/2.887[mm]>25>>>True 
 however the L value should be 150mm

Seth Guthrie · Accepted Answer

The program here is looking at the splice plates. The distance from the bolts to the end of the branch is ae1 = 40mm. The setback is 12.7mm. So the program uses 40 + 12.7 + 40 = 92.7mm as the length of the splice plate central section. K is 0.65 (assume fixed-fixed behavior). r is based on the splice plate thickness. Note, there is a relationship between the upper gusset plate height LV that is important for maintaining edge distances.

Seth Guthrie · Answer

Check this recent post: https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/236671/ram-connection-bolted-brace-limit-state

how the gusset length calculated?

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