What is the standard size of a hazardous material placard?

10 3/4 inches square. Section 9.3.3: Placards must be at least 10 3/4 inches square.

What is the standard size of a hazardous material placard?

ANSWER BREAKDOWN
  • A. Incorrect. The required depth is 3/4 inch, not 5 inch. Placards must be at least 10 3/4 inches square.
  • B. Incorrect. The required depth is 3/4 inch, not 8 inch. Placards must be at least 10 3/4 inches square.
  • C. Correct. Placards must be at least 10 3/4 inches square.
  • D. Incorrect. The required depth is 3/4 inch, not 12 inch. Placards must be at least 10 3/4 inches square.