Monopitch and Attic trusses are the next items I will tackle.
I've had a good bit of experience dealing with attic trusses in my own designs. The big difference in configuration is the use of a piggyback where the truss height gets too tall for shipping. I think it it would be cool to allow a user variable that enforces a max height and then draws a piggy back truss or the simpler configuration based on span, pitch and this max. truss height specified by the user:
Also with this type of truss I've noticed that the top chord section where no triangulation is present (diagonal ceiling) the truss depth is often inadequate for insulation. Hence the need to split the top chord as shown in the first drawing with the overhanging portion 2x4 or 2x6 and the upper top chord 2x8 or deeper.
The piggyback is usually a small king post truss composed of 2x4 members all around. The ceiling web of a piggyback is often 2x6 but I've seen 2x4 as well.
With more elaborate and longer spanning attic trusses I've even seen the bottom chord turned into an integrated floor truss where more depth is needed.
The simplest attic truss only involves six members:
Then to further increase the complications added a raised heel, typically not needed though since this type of truss is generally 8/12 pitch or higher.
If anyone has any other features or additional options that they would want to see included in an attic truss design please chime in. This one really intrigues me, much more challenging than the common truss types.
I've had a good bit of experience dealing with attic trusses in my own designs. The big difference in configuration is the use of a piggyback where the truss height gets too tall for shipping. I think it it would be cool to allow a user variable that enforces a max height and then draws a piggy back truss or the simpler configuration based on span, pitch and this max. truss height specified by the user:
Also with this type of truss I've noticed that the top chord section where no triangulation is present (diagonal ceiling) the truss depth is often inadequate for insulation. Hence the need to split the top chord as shown in the first drawing with the overhanging portion 2x4 or 2x6 and the upper top chord 2x8 or deeper.
The piggyback is usually a small king post truss composed of 2x4 members all around. The ceiling web of a piggyback is often 2x6 but I've seen 2x4 as well.
With more elaborate and longer spanning attic trusses I've even seen the bottom chord turned into an integrated floor truss where more depth is needed.
The simplest attic truss only involves six members:
Then to further increase the complications added a raised heel, typically not needed though since this type of truss is generally 8/12 pitch or higher.
If anyone has any other features or additional options that they would want to see included in an attic truss design please chime in. This one really intrigues me, much more challenging than the common truss types.