Dr. Ed McCoy Ohio State University There are several reasons why a clay tile or perforated pipe drainage system may fail. These reasons include 1) sedimentation within the pipe itself, 2) filter-caking of a geotextile envelope, 3) sealing of drains with ochre, and 4) crushing or flattening of the drain. This article offers an explanation…
Dr. Ed McCoy Ohio State University Passive Capillary Drainage (PCD) of push-up putting greens essentially consists of installing fibrous capillary drainage elements to a depth of 9 to 10 inches and at a spacing of 3 feet within areas of a putting green in need of drainage. Additionally, a 3/8-inch wide sand curtain extends from…
Layering is a common occurrence in putting green soils. Frequently this layering consists of a sandy root zone overlying a finer textured native soil. Other instances as in a USGA putting green have a sandy root zone over gravel. When such a distinct difference in soil texture occurs across a defined boundary, there is also…
There are two ways to look at this and so there is no single answer. On the one hand, the PCD element has pore sizes similar to a medium sand. So if one were concerned with perfectly matching the pore sizes in the sand with the pore sizes in PCD then one would choose a…