Atlas of the Biodiversity of California. About the Atlas. The Atlas of the Biodiversity of California is a fascinating guide to the state's biological resources. This book is a bound collection of maps, stunning photographs, and artistic illustrations â all depicting the state's rich diversity of plant and animal species.
Typically, costs for installing a concrete access ramp fall between $1432 and $2377 and will vary with the size and features of construction as well as with your choice of finishes and landscaping elements.
1 For every inch of height the ramp will be, you will need one foot of ramp length. 2  For example, if the ramp needs to be 24 inches high, you will need to build it 24 feet in length.3  In addition, the ramp is required to be three feet wide. Chalk. 2  String. 3  For every inch of height the ramp will be, you will need one foot of ramp length. 4  For example, if the ramp needs to be 24 inches high, you will need to build it 24 feet in length. 5  In addition, the ramp is required to be three feet wide.