stryped fired this volley in news:c16352ba-8d16-
:

Are these roughly the same strength? COuld a person use any of them to
build a trailer?

Gee, Stryper... another "duh!" moment.

Did you ever wonder WHY one thing might be called Schedule-80, and
another Schedule-40? Did you ever look at _anything_ concerning what
those terms might mean?

(So the steel man says, "Joe, go out to that big stack of tubing out
there, and label half of it 'Schedule-40', and the other half 'Schedule-
80' so we can make our orders...")

LLoyd