Pavements Drainage Layer
Pavements Drainage Layer
(OP)
Hi, for flexible and rigid pavements what could be the main reasons to install a drainage layer? My project is located at a non-frost area, with the water table very deep (at GL-15m). Storm intensity is 142 mm/hr for 10-year design period. Traffic is low and at a low velocity (for aircraft and ground vehicles), so pumping may be low. I am thinking that my base (150 mm) can serve as a drainage layer as well. My main question is what are the parameters that determine the use of a drainage layer. Thanks !!





RE: Pavements Drainage Layer
RE: Pavements Drainage Layer
RE: Pavements Drainage Layer
RE: Pavements Drainage Layer
RE: Pavements Drainage Layer
Anyway, I will double check my numbers. The existing pavement that I have to replace does not present signs of drainage problems and it used similar base course as it is a standard material here in Japan. I still have to do more field investigations to check if it has a drainage layer but I think it does not have it as I did not noted any daylight outlet along the pavement (The subgrade has very low permeability so if there is a drainage layer (open grade material layer), I think that it should be a daylight outlet).
Thanks again !!
RE: Pavements Drainage Layer
RE: Pavements Drainage Layer
RE: Pavements Drainage Layer