Would taking F=ma be appropriate?
Also, some ideas....
1.watch the cover on the rebar, the blades of front end loaders may chip the concrete, exposing reinf.
2. look for additives that give hardness/durability to the concrete.
3. Use epoxy coated bars. These transfer stations tend to bring...
Take a look at the ASTM A 775 for epoxy coated bars. I believe there is a section on "Guidelines For Job-Site Practices" which recommends that equipement handling epoxy coated bars to have protected contact areas.
