The methodology to be followed for the construction of Bituminous Road Works as per Indian Standards.
Methodology for the Construction of Bituminous Road Works The construction of Bituminous Road Works in India is governed by the Indian Standards and guidelines provided by the Ministry of Road Transport and Highways (MoRTH). Here is a general methodology to be followed for the construction of Bituminous Road Works as per Indian Standards: Subgrade Preparation: The subgrade is prepared by excavating the soil and removing any debris or organic material. It is then compacted to achieve the required density and level. The subgrade should have a minimum CBR (California Bearing Ratio) of 2% for rural roads and 5% for urban roads. Granular Sub-Base (GSB): The GSB layer is constructed on top of the subgrade to provide a stable base for the bituminous layer. The GSB layer is typically 200-300 mm thick and consists of crushed stone or gravel. The material is compacted to achieve the required density and level. Bituminous Concrete (BC) Layer: The bituminous layer is constructed o...