According to NIST perimeter lighting standards critical area

According to NIST perimeter lighting standards, critical areas should be illuminated to what measurement?

A. 10 feet in height, with 2-foot candle power

B. 12 feet in height, with 4-foot candle power

C. 8 feet in height, with 2-foot candle power

D. 8 feet in height, with 4-foot candle power

Solution

Answer is C

8 feet in height, with 2-foot candle power.

-> NIST perimeter lighting stands,critical areas should be illuminated to 8 feet in height,with 2 foot candle power is used.