I'm considering removing some walls in the center of a home with Howe Trusses (see pic). I know trusses are normally designed to transfer all the load to the exterior walls, but what concerns me is that the entire length of the house is supported roughly at the center by a wall capable of being load-bearing through to the foundation below. And while I've owned homes with other styles of trusses, these Howe trusses look ideal for a design where the load is split between the center and the outside walls. So I'm not confident I can remove those center walls
The exterior walls measure 25' apart on the inside (~25' 4" on center); I'm in coastal Maryland, so my snow load is 25 or 30 psf. The roof is a 4/12 pitch, and the house was built in the 1970s.
Does anyone know for certain that the trusses in question can handle the full snow load with no center support? I realized most people, including me, would say "ask an engineer", but I suspect someone here has experience with this truss design over this very common span distance and therefore knows the answer.