Maintenance of Drainage facilities at the rear side of the Canteen Building at PHQ

OD91176/2026-2027 Constructing and providing RCC manhole 60X60X60 cm Inner dimension including earth work with 30 cm work clearance, foundation concrete 1:4:8 mix ( 1 cement : 4 coarse sand : 8 graded stone aggregate 40 mm nominal size,) 10 cm thick for base, RCC 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) for 20cm thick sides wall and 10 cm thick base slab, with FRP top cover required size (capacity 5 Ton), inside plastering 12 mm thick with cement mortar 1:3 ( 1 cement : 3 coarse sand) finished with floating coat of neat cement , provision for inlet and out let connection forming channels in cement concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size ) at bottom finished with a floating coat of neat cement complete as per standard design, inside cutting groove for cover slab, handling grip using 12 mm bar etc complete.

50.18.9.10.1 Providing and fixing PVC pipes includings jointing of pipes with one step pvc solvent cement, trenching , refilling & testing of joints complete as per direction of Engineer in Charge. 150 mm dia 6 Kgf/cm2

OD91177/2026-2027 Engaging Tipper lorry for shifting earth from site, yard with in distance of 2.5 km for shifting for the earth from yard to site for Back filling including all cost for driver salary , Oil maintenance etc complete.

18.18.3 Providing and fixing ball valve (brass) of approved quality, High or low pressure, with plastic floats complete:25 mm nominal bore