balance of nature. n. (Biology) the stable state in which natural communities of animals and plants exist, maintained by adaptation, competition, and other interactions between members of the communit ies and their nonliving environment. balâ²ance of naâ²ture.
The standard driveway width for residential homes ranges from 9 feet to 24 feet. The width of your driveway will vary based on whether you want a single car drive or double car drive. Additionally, the width may change to accommodate parking or a turn-around, these added features will change the cost of your driveway.
For example, let's calculate how much concrete is needed for a 5-inch thick rectangular driveway, 60-feet long (length) and 18-feet wide (width). The area of the driveway is 1,080 square feet (60-feet x 18-feet).f you can determine the area of your concrete project (length x width for rectangular projects) and know the thickness of the slab, you can use the information in the Concrete Volume Calculator below to determine how much concrete you need. One Cubic Yard of Concrete 1  â¦. 4-inches thick-covers 81 square feet.