Modified King Post Trusses

This week I'm working on the design of a modified king post trusses.  The trick to the modified king post truss is the design of the top chord.  Depending on where the tie is placed and the how much tension is being transferred it adds to the bending stresses of the top chord.  This typically increases the size of the top chord.

The image is from cadwork which is the drafting software I use.  Here are some other examples of modified king post trusses from Vermont Timber Works.