Plate for a man hole
Plate for a man hole
(OP)
I have to design a plate acting as a cover for a man hole. It is 24"x24" supported on all sides. There is going to have heavy circulation over it. I know there is biaxial bending an torsion but dont know how to design it. Have any info on this design?






RE: Plate for a man hole
RE: Plate for a man hole
For maximum moments and shears, check out Roark's Formulas for Stress and Strain. They have that case in there (uniform load, pinned on 4 sides).
I think SperlingPE stated it best, however. Find a Neenah catalogue and buy one. It will probably be lighter than the one you come up with.
RE: Plate for a man hole
RE: Plate for a man hole
RE: Plate for a man hole
RE: Plate for a man hole
If there isn't a problem with leveling and the grating is in good shape, weld a plate to that.