Not being of an engineering background, I was first inclined to think that a door closer would reduce horizontal load on all hinges and not contribute any support in the vertical dimension.
However, bearing rotational mechanics in mind, is this necessarily true?
I think, on any normal door:
- The upper hinge would be under horizontal tension.
- The lower hinge would be under horizontal compression.
If a concealed door closer (similar to the model in the lower image) is installed into the frame below the center of mass of the door, would it exacerbate load on the hinges rather than protect them?
Concealed door closer, mounted in the jamb, providing constant spring-loaded compressive force.
Would it contribute anything to the vertical load on the hinges?