In steel erection, written authorization must notify the steel erection contractor that concrete ...

In steel erection, written authorization must notify the steel erection contractor that concrete used in footings has withered:
 
  A. Cured to at least 75 of its intended minimum compressive design strength.
  B. Has cured sufficiently to support the loads that will be imposed during erection.
  C. Both A and B.

 Q. 2

The purpose of ROPS is to keep the operator of the equipment in question from being crushed should the equipment roll over.
 
  Indicate whether the statement is true or false

 Q. 3

Utility poles being transported should be clearly marked by a red flag on the end of the longest pole.
 
  Indicate whether the statement is true or false