In bed for Trapezoidal Section Only Brick lining 7.5cm thick in 1:3 cement sand mortar over low density polyethylene over dressed sub-grade with 12.5 mm thick sand cushion in curved bed portion only including laying, trenching and jointing LDPE.
In bed for Trapezoidal Section Only Brick lining 7.5cm thick in 1:3 cement sand mortar over low density polyethylene over dressed sub-grade with 12.5 mm thick sand cushion in curved bed portion only including laying, trenching and jointing LDPE.