floor truss

Can holes be drilled through the bottom of floor trusses for the purpose of running wire? I have a situation where it would save my a lot of time (and energy) if I could. I have a wall built directly underneath which would help with support. Doing some searches it seems like code talks about notches that are allowed, but reading further says nothing can be done to engineered trusses, which I think I have. A pic can be seen here:
http://home.mn.rr.com/dtro/truss.jpg
You will see the subfloor above the truss and then the wall underneath.
I have been trying to get ahold of inspec to confirm whether or not I can. I would appreciate any help.

 

While my gut reaction says don't do it, you should check with the truss manufacturer to see if there are acceptable hole sizes and locations.

 

dtro,

I would think that a 1/2" hole would be considered ok but I would strongly suggest geting the proper OK from the Building Inspector.

What you have read is true but as this looks as though it is directly under the truss, and if it is installed to carry the load, if it had too, then I think the occassional hole would be acceptable. You may want to apply metal strapping to ensure that the wall below will not be moved at all to satisfy the inspector and ensure that the wall below is solid and touching the floor joist.

Hope this helps and let us know what you found out.