127 / 20 maintenance works to material collection facility centre - 2 2.8.1 : earth work in excavation by mechanical means ( hydraulic excavator ) / manual means in foundation trenches or drains ( not exceeding 1.5 m in width or 10 sqm on plan ) , including dressing of sides and ramming of bottoms, lift up to 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.all kinds of soil 3 od395208 / 2019_2020 : laterate masonry with neatly dressed laterate stone of size 35x20x20cm or nearest size in cement mortar 1:6 for foundation and basement including all cost of materials, labour charges etc. 4 od395209 / 2019_2020 : laterate masonry with neatly dressed laterate stone of size 35x20x20cm or nearest size in cement mortar 1:6 for super structure above plinth level up to floor two level including all cost of materials, labour charges etc. 5 15.19 : dismantling steel work manually / by mechanical means in built up sections without dismembering and stacking within 50 metres lead as per directions of engineer -in-charge. 6 2.25 : filling available excavated earth ( excluding rock ) in trenches, plinth, sides of foundations etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m.filling available excavated earth ( excluding rock ) in trenches, plinth, sides of foundation etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m. 7 4.1.8 : providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level:1:4:8 ( 1 cement : 4 coarse sand : 8 graded stone aggregate 40 nominal size ) 8 50.10.2 : steel work for purlin / single section with g i pipes including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete 9 od305247 / 2018_2019 : providing & fixing aluminium corrugated sheet 0.4 mm thick as approved by the engineer in charge and should be supplied in a single length of 12 m or as decide by the engineer in charge. the sheets shall be fixed using self drilling / self tapping screw of size ( 5.5x55 mm ) with epdm seal complete upto any pitch in horizontal / vertical / curved surface, but excluding the cost of purlins, rafters, trusses, and including cutting to size shapes where ever required. 10 od305248 / 2018_2019 : providing and fixing 150 mm split pipe over flat iron brackets 20x5 mm size 11 11.47.2 : providing and laying vitrified tiles in different sizes ( thickness to be specified by the manufacturer ) , with water absorption less than 0.08% and conforming to is : 15622, of approved brand & manufacturer, in all colours and shade, in skirting, riser of steps, laid with cement based high polymer modified quick set tile adhesive ( water based ) conforming to is : 15477, in average 6 mm thickness, including grouting of joints ( payment for grouting of joints to be made separately ) .size of tile 600x600 mm 12 13.1.1 : 12 mm cement plaster of mix:1:4 ( 1 cement : 4 fine sand )