PAVEMENT DESIGN USING CBR AND MODIFIED CBR METHODIRC 37 2012
Автор: Cee4civil
Загружено: 2021-05-26
Просмотров: 1859
This video is created for the sixth semester B. Tech Students in civil engineering branch
Questions discussing are :
1. The soil subgrade sample was obtained from the project site and the CBR tests was conducted at field density gave the following readings. Loads at 2.5mm and 5mm penetration are 55kg and 78kg. Find the total thickness of the pavement by CBR method as recommended by IRC for commercial vehicles 1500 per day with 7% growth rate. The pavement construction is to be completed in three years after last traffic count. If the materials in different layers are compacted soil with 7% CBR, poor graded gravel with 20% CBR and well graded gravel with 95% CBR, find the thickness of each layer and sketch the pavement section. Assume thickness of bituminous layer as 50mm.
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