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.
Causes of Fingernail Ridges, Pitting and Curved Nails. 1  Longitudinal ridges (running from the cuticle to the free edge of the nail) may be due to aging and not a sign of any disease.  Nail beading, where the nail loses its smooth curvature, is also a normal part of aging.
The nail thickens, and the skin becomes cracked where the nail pushes into it. At times the curve can get so severe, the side edges of the nails will almost touch, causing significant pain. Left untreated, infection can develop. A number of factors can cause pincer nails to evolve. Genetics can play a role, since the natural shape of the nail plate determines how a nail grows.