Loading Class Manual for intelliVIEW – Chapter 7
Calculate #1 Hip Reactions Using Load Area Method
Continuing with the same base load case (right), we can calculate the reactions of a #1 Hip
Truss using load areas. The same formula, used in the last example, can be used to calculate
the girder reactions.
The total supported area is illustrated below left. There will be two load areas that will need to
be calculated. The first area, shown below right in gray, defines the space between the girder
and adjacent common truss. The second area, shown below right in yellow, defines the area
occupied by the by the jacks. The sum of these two areas will determine the approximate Hip
Girder reactions.
TC LL 20 PSF
TC DL 10 PSF
BC LL 0 PSF
BC DL 10 PSF
TOT. LD 40 PSF
