" wrote:

Does anyone know the preferred method for specifing roof pitch? Should
I specifiy it as an integer value of say 6-in-12? Would a truss builder
not like to build say a 6.125-in-12 truss?

...Or is it better to work in integer angle values like 30deg?
I want to draw up plans that make sense for the truss builder, but also
make it easy to mitre pieces like facia boards.

Thanks,

Strato

The truss manufacturer will want to see 5/12, 6/12, etc. If you are
drawing plans, one thing to note is that the truss manufacturer will
draw a set of truss plans for you. If it is an existing building,
then the agent will come out and measure for the trusses himself.
This is best due to the fact that any errors in dimensions will then
be his to repair or replace, rather than you.

If this building is in the plan stages, then a floor plan and a roof
plan will give him everything that he needs to know. Typically the
roof plan will be drawn showing overhangs, ridges, valleys, etc and
a spec for the slope (as in 6/12). If you have vaulted ceilings,
pan ceilings or any other special requirements, then they will need
plans showing those, also. A detail of your overhang can be
helpful, too. He will ask all the questions that are needed to
manufacture the trusses, and draw a detailed truss plan with an
engineers stamp on it. Most jurisdictions require this for code
enforcement. Unless you are an engineer or architect, you cannot
draw plans for the trusses. You can draw a set of plans, have the
manufacturer approve them with a stamp and then use them, but they
can do it better and faster than you can. Best to let them do what
they do best. The plan will show placement, bracing requirements,
and any other details that you need to receive a permit and for code
inspection.


--
Robert Allison
Rimshot, Inc.
Georgetown, TX