Quiz: Section 5.4 Design of a Laminate

In a cylindrical pressure vessel under uniform internal pressure, what can you say about the hoop stress?
   (A)   hoop stress is twice the longitudinal
           stress.
   (B)   hoop stress is half the longitudinal
           stress.
   (C)   hoop stress is the same as the
           longitudinal stress.

In a spherical pressure vessel under uniform internal pressure, what can you say about the hoop stress?
   (A)   hoop stress is the same as the
           longitudinal stress.
   (B)   hoop stress is half the longitudinal
           stress.
   (C)   hoop stress is twice the longitudinal
           stress.