Monthly Archives: March 2018

Why would you put nails in an aggregate porous pavement?

Written By: Bill Handlos, PE Every one of them. Each and every one of the spikes required to anchor this “invisible” product has pushed up. If consistency is the hallmark of excellence, then the maker of the gravel pavers that comes on a roll—“nailed” it. Take a look at what mother nature does, after each winter, to 8 inch spikes that were intended to hold down the ultra lightweight gravel paving product. For those of you who are blessed to live in an area where there is not frost each winter, let me explain. Whether you get 12 inches or 3 feet of frost, the frozen ground pushes up rocks, pipes, fence posts, garden lanterns and, yes, 8 inch nails. As a result, the parking area constructed in Wisconsin, whose specifications call for the use of spikes that are intended to stop the material from moving under the rotational torque loading of pneumatic tires (or for you non-engineers, tires) — well, that parking lot has just become the local tire repair center’s best friend. Tires do not like nails. Tires especially do not like nails that are sticking out by about an inch firmly held in place waiting to attack… Read more »