Design of gravel envelope for silty and fine sandy soils in Pakistan
Boers, T.M.; Someren, C.L. van
International Institute for Land Reclamation and Improvement ILRI, Publication 25: 713-731
The design of a gravel filter for a pilot project in Pakistan is discussed. The criteria applied to actual soil conditions resulted in a range of required grading of the filter. Of available filter material in Pakistan, gravel from Shadi Shaheed is selected as most suitable on the basis of grading, distance from quarry to pilot area, and performance in a sand tank model.