tender for remodeling / rehabilitation for lining of watercourse at outlet rd 18000-r sanga minor ; 1 credit of old bricks and brick bats 2 supply, carriage and fixing of r.c.c panels of requisite sizeas per approved design drawing and p.w.d. specifications ( 27` x 27` ) 3 supply, carriage and fixing of r.c.c lids dia 21. 4 supply carriage and laying of 100 micron polythene under bed lining 5 brick work for arch / culvertin cement mortar 1:3 ( 1 cement : 3 coarse sand ) with extra for brick work in archspecially molded by common burnt clay non modular bricks of class designation 7.5 or cut-bricks have to be used: but for which no centering or supports are required up to 4.5 meters internal diameter as per based hsritem no.7.21.1=4376.16 ( detail analysis attached )