First class over burnt bricks are usually preferred for HomeEstimation and Costing MCQsFirst class over burnt bricks are usually preferred forQ. First class over burnt bricks are usually preferred forA. FoundationB. Super structureC. RoofingD. Road constructionAnswer: Roofing
A cement concrete road is 1000 m long, 8 m wide and 15 cm thick over the sub-base of 10 cm thick gravel. The box cutting in road crust is