Stone Slab Culverts with Abutments and Piers:
Where good quality stone slabs are available like granite slabs, they can be used for superstructure of culverts, with suitable masonry abutments. Spans of such slabs are necessarily small, say upto one metre. Such culverts can be constructed for rural roads (Other District Roads and Village Roads).
RCC Slab Culverts
RCC slab culverts with masonry abutments and piers can be constructed for individual spans upto 6 m.
RCC Box Culverts
RCC Box culverts are ideal for in-situ constructions for opening of size upto 5 m. They can be constructed in square boxes or rectangular boxes, depending upon site conditions. Single or multiple boxes can be constructed. The advantage lies in the elimination of the stout abutment sections which are unavoidable in slab construction.