Josh, Nutte,
Thanks for taking a look. I still can't see where it comes from. I looked closer at using h = d-2*k_des to calculate h/t_w. The error ranges from ~4 to 15 percent - generally increasing as the channel size goes down. I tried plugging in tw_det too. In most cases, the...
AISC has an Excel file (AISC Shapes Database) on their website with shape properties from the steel manual. In the "Readme" section of the file it states that "the database contains some additional section properties that are not included in the Manual." One such property is h/t_w for...
Tables 8-4 through 8-11 provide Coefficient values (C) for the instantaneous center of rotation method of weld groups.
In Table 8-4 the figure defines a special case for when the load point is not in the plane of the weld group. It says to use values for k=0. I would expect the same is true...
