On Tue, 20 May 2014 09:33:32 -0700 (PDT), "Gramps' shop"
wrote:

I need to load a riding mower onto the bed of my truck. Considering using 2x12s for the ramps, braced at the midpoint. Can they handle this?

I've used 2x10s to load mine in a trailer. My truck bed is to high to
even think about doing this.