We would like to take down a wall that runs in the center and the
length of my small bungalow.
We have a crawl space. There are two cinder block posts on cement pads
in the crawl space. They are both spread apart from one another and in
the middle of the crawl space and positioned lengthwise to the house.
Does this mean the wall is necessary?
The house is about 24' wide.
I have a picture of the truss but can't post here. They are 2x6, and
2x4 at the smaller edge (I think that's called the knee wall??.

If you have roof trusses, the 2x4's should be assembled into triangular
structures, with metal plates connecting each joint. A "W" shape is the
most common layout for residential trusses. Is this what you see in your
attic?

A roof truss is usually designed to be supported only by the two outside
walls, and the interior walls are just partitions that don't support any of
the structure above.

However, before you tear it out, you may want to investigate a bit more.

Climb up into the attic and see if there are any posts, walls, or other
structures that might rest on the wall below. If so, the wall may be
holding up that load, even if the trusses support the roof itself.

Assuming there are no loads above, it is probably safe to remove the wall.

Before you rip it out, you might want to remove the interior wall covering
and see if there are any headers above the doorways. Load bearing walls
typically have a large header above the doorways, whereas a partition would
normally just have a simple 2x4 frame around the door opening. You could
probably determine this with a stud finder too, with the interior coverings
still in place.

Good luck,

Anthony Watson
www.mountainsoftware.com
www.watsondiy.com