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 On average, a ramp can range anywhere from $50 to as much as $500 for the ramp itself. 2  This will not include the professional installation rates. 3  The minimum amount you should plan on spending is from $1,300 to as much as $3,000 to have the ramp built and installed. Each site offers a handsome discount for the product, which can help you save a few hundred dollars. 2  Wheelchair ramps vary in price because of the materials from which it is made. 3  More durable materials may cost more, but it will allow you to save in the long run since it will last longer.