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.
If the diver is responsive continue rescue breathing and tow to safety while starting equipment removal between breaths. If the diver is unresponsive, immediately discontinue rescue breathing and tow to shore as quickly as possible. Get the diver out of water, do a primary assement and if needed start CPR with AED if available. Imagine you are rescuing an unresponsive diver at the surface. You find the diver is not breathing.