Asphalt Considerations
For the pavement thickness design different considerations must be taken into account, the criteria followed was under the design standards for construction for the city of El Paso, which follows ASTM standards(1993), all the procedures will be used for all city of El Paso street paving projects and all of those projects within 5 miles of distance. To follow the requirements needed, a geotechnical study must be made to obtain the classification of subgrade soils, in order to get the results for the geotechnical study a minimum of 2 boring holes with standard penetration tests must be excavated to 6.5 ft. below paving and the location of the boring holes shall be placed at intervals not exceeding 800 ft. between the drillings. From the report obtained for the soil study, the properties of the soil should be established and the index properties for the soil, the strength of the subgrade soils, the results for the 2 boring holes dug on a nearby area shown the soil that the soil on the land was a silty sand (SM) (A-3), a non-plastic material with a water content of 6% , and a liquid limit of 35.