As long as it is at least 2 inches thick and your father is not very heavy, and the steps are not higher than 8 inches.
depends on the units. is it a 2 x 6 piece of plywood? or is it just a piece of paper? If it is wood then its 2" or feet thick. If its like a 3D object then i couldn't tell you cause i don't know the other dimension.
I need the thickness dimension of 12 ply plywood for floor.
Yes
A half inch thick steel plate, A half inch thick plywood, Brick, Concrete Block
Yes, it will easily hold that weight. Most flooring is that thick and it holds people.
MDF isn't plywood, it's more like thick masonite.It's a composite board that's made of sawdust, paper pulp and glue
That will be fine.
Just use solatube
There are two primary reasons for the use of veneer in a woodworking project: strength and price. In the matter of strength, most veneered wood is a form of plywood. Plywood comes in a variety of strands (plys), from three-ply to laminated products of 20, 50, or 100+. The greater the ply, the stronger the product due to the cross-biased construction. As far as price, the cost of a piece of plywood with a rare wood face such as mahogany or rosewood is vastly lower than a piece of solid lumber. The face being 1/64th to 1/16th inch thick will show the same beautiful grain as a solid piece for a fraction of the cost, and the workability of plywood is negligibly the same as a solid piece of lumber.
that depends on the type of plywood 3/4" ranges from about 20.00 to about 50.00 a sheet (cheap flooring to higher end finish plywood and marine grade pressure treated) in my area. . .check around.
Identical to that of a piece of string, but not as thick.
depends on the piece of lead.