Construction and renovation of Middle School Bakchoma under Block Keredari

Earth work in excavation in foundation trenches in ordinary soil (vide classification of soil item - A) and disposal of excavated earth as obtained to a distance up to 50M including all lifts with leveling, ramming the foundation trenches, removing roots of trees, shrubs all complete as perbuilding specification and direction of E/I. B.C.D. S.O.R. Item No. 5.1.1

Providing coarse clean sand in filling in foundation trenches or in plinth including ramming and watering in layers not exceeding 150mm thick with all leads and lifts including cost of all materials, labours, royaly and taxes all complete as per building specification and direction of E/l. B.C.D. S.O.R. Item No. 5.1.10

Providiag designation 75B brick work in Cement Mortar (1:6) in foudation and plinth with approved quality of clean coarse sand of F.M. 2 to 2.5 including providing 10mm thick mortar joints, cost of screening materials, raking out joints to 15mm depth, curing taxes and royalty all complete job as per building specificition and direction of E/l. B.C.D. S.O.R. Item No. 5.2.6

Providing designation 75 B brick work in C.M. (1:6) in superstructure with approved quality of clean coarse sand of F.M. 2 to 2.5 including, providing 10mm thick mortar joints, cost of screening materials, raking out joints to 15mm depth curing, taxes and royalty all complete as per building specification and direction of E/I.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 1:2:4 (1 cement : 2 coarse sand (zone-III) : 4 graded stone aggregate 20 mm nominal size) B.C.D. S.O.R. Item No. 5.3.1.2

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor etc., up to floor five level, excluding the cost of centering, shuttering and finishing: 1:1½:3 (1 cement : 1½ coarse sand (zone-III) : 3 graded stone aggregate 20 mm (5.3.2.1)

Making plinth protection 50mm thick of cement concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size) over 75mm thick bed of dry brick ballast 40 mm nominal size, well rammed and consolidated and grouted with fine sand, including necessary excavation, levelling & dressing & finishing the top smooth.

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level. 1:1.5:3 (1 cement : 1.5 coarse sand (zone-III): 3 graded stone aggregate 20 mm nominal size) B.C.D. S.O.R. Item No. 5.3.9.1

Reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. above plinth level up to floor five level, excluding cost of centering, shuttering, finishing and reinforcement : 1:1.5:3 (1 cement : 1.5 coarse sand(zone-III) : 3 graded stone aggregate 20 mmnominal size) B.C.D. S.O.R. Item No. 5.3.10

Reinforced cement concrete work in beams, suspended floors, roofs having slope up to 15° landings, balconies, shelves, chajjas, lintels, bands, plain window sills, staircases and spiral stair cases above plinth level up to floor five level, excluding the cost of centering, shuttering, finishing and reinforcement, with 1:1.5:3 (1 cement : 1.5 coarse sand(zone-III) : 3 graded stone aggregate 20 mm nominal size). B.C.D. S.O.R. Item No. 5.3.11