What should be the minimum length of engagement of a :-13, grade 1 bolt with a cast iron block. a. What do the and 13 represent? b. What will fail in shear-bolt or block? (bolt, but design is such...

What should be the minimum length of engagement of a :-13, grade 1 bolt with a cast iron block.

a. What do the and 13 represent?

b. What will fail in shear-bolt or block? (bolt, but design is such that the bolt should fail in tension rather than shear.)