INNOVATIONS IN DESIGN AND CONSTRUCTION OF STORM WATER DRAINAGE FOR RURAL ROADS, REGION DE LOS LAGOS, CHILE

摘要

The Roads Department of the Ministry of Public Works, has successfully developed over the last decade a program paving rural roads under traffic at low cost (approximately $ US / 150,000 km), called "Caminos Básico 5000". The Region de los Lagos, has a very rainy weather (about 2,000 mm / year). This implies that the cost associated with storm water drainage is high relative to paviment and can easily reach top $ / km 80,000, if using traditional solutions for rainwater drainage. For this purpose this paper describes the solutions adopted, which are inexpensive and can reach lower costs by approximately 30%. These innovations are mainly based on: - Use masonry trenches, ditches and general longitudinal drainage. - Using HDPE mesh for channel protection - Use of HDPE pipes for sewers - pre fabricated concrete elements - Use of biodegradable mesh for slope protection - Replacement of concrete curbs with not biodegradable mesh with added lawn. Also, in the design stage, a finished cadastral of existing culverts, which is mounted on existing aerial photographs is incorporated, which greatly reduces the design time and increases future work.