Author:Â V.G. Kiran Kumar
Abstract: The design and estimation of flexible pavement on Kandukur road of stretch 2 km by traffic counts, levelling and soil test. Traffic count is vehicular traffic which is along a particular road, path or intersection .A traffic count is commonly under taken either automatically or manually by observes who visually count and record traffic on a hand-held electronic device or tally sheet .Traffic count is very important to increase efficiency and life of road and reduces traffic volume at a particular section. Levelling is the process by which difference in height between two or more points can be determined. Common levelling instruments include the spirit level. The dumpy level, digital level and the laser level levelling in a branch of surveying the object of which is to find or establish the elevation of a given point with respect to given or assumed datum point or reference point California Bearing Ratio (CBR) test is most commonly used test for designing of thickness of pavements. CBR test is penetration test for evaluation of mechanical strength of natural ground, sub-grade and base coarse beneath new carriage way construction CBR rating was developed for measuring the load bearing capacity of soil used for buildings, roads. The harder the surface the higher the CBR rating higher quality crushed rock as a CBR over 80.the standard material for this test is crushed California limestone which has valve of 100.CBR values of over 100 in well compacted areas. Estimation of flexible pavement was done by MORTH [ministry of road transport and highways] specifications and using excel sheets. Hence the design and estimation of flexible pavement is done by traffic counts, leveling and soil test.
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