1. Calculate how much gravel you will need. To determine this, you need to multiply your drivewayâs length (in feet), width (in feet), and depth (in feet), then divide by 27 to get the cubic yards of gravel. 1  The depth of the gravel can vary, but should be at least 4-6 inches.
Causes of Unresponsiveness that are uncommon. The following causes of Unresponsiveness are diseases or conditions that affect more than 200,000 people, but less than 1 million people in the USA: Cirrhosis of the liver - unresponsiveness.
Janet L Wilterdink, MD. Stupor and coma are clinical states in which patients have impaired responsiveness (or are unresponsive) to external stimulation and are either difficult to arouse or are unarousable. Coma is defined as unarousable unresponsiveness [1]. An alert patient has a normal state of arousal.