Design of Farm Road Construction at The Tertiary Plot of Paddy Field

Abstract

Farm roads are needed for transportation of agricultural inputs (seeds, fertilizers, pesticides and agricultural machinery and equipment), for transportation of agricultural products and for the operation and maintenance of paddy field’s infrastructure. The objective of this research was to design the farm road construction which integrated with tertiary channels and to develop its prototype. The design of farm road construction was based on the specification of vehicle/equipment, the farm roads criteria, the tertiary channels criteria, and the characteristics of road’s sub-grade. The compaction of road’s sub-grade on prototype development was done by using tamping rammer,and the strength of prototype was measured by using dynamic cone penetrometer (DCP). The design of farm road in the tertiary plot are:2 m top width , 0.90msub-grade height, 1:1.2 side slope, 7 cm pavement thick, and 0:50 m pipeline depth. The strength of prototype sub-grade represented by CBR were ranged from 7.62-21.90 %. These values satisfy the strength requirements of farm road (CBR minimum 5.70 %).