corrigendum - annual rate contract for misc . civil repair and maint . works in plant and mines area , arc , repairs to plaster of thickness 12mm to 20mm in patches of area 2 . 5 sq . meters and under including cutting the patch in proper shape , raking out joints and preparing and plastering the surface of the walls complete including disp , 15 mm cement plaster on the rough side of single or half brick wall of mix :1:6 ( 1 cement: 6 fine sand ) , earth work in excavation by mechanical means ( hydraulic excavator ) / manual means over areas ( exceeding 30cm in depth . 1 . 5m in width as well as 10 sqm on plan ) including disposal of excavated earth , lead upto 50m and li , 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 , excavation in foundation trenches or drains not exceeding 1 . 5 m in width or 10 sq . m on plan including dressing of sides and remming of bottoms , lift upto 1 . 5 m including getting out the excavated soil and disposal of surplus excavation soil , filling available excavated earth ( excluding rock ) in trenches , plinth , sides of foundations etc . in layers not exceeding 20cm in depth , consolidating each deposited layer by ramming and watering , lead up to 50 m and lift upto 1 , extra for every additional lift of 1 . 5 m or part thereof in . all kinds of soil . , surface dressing of the ground including removing vegetation and in-equalities not exceeding 15 cm deep and disposal of rubbish , lead upto 50 m and lift upto 1 . 5 m . all kinds of soil . , 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 fine sand : 8 graded stone aggregate 40 mm nominal size ) , 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 , centering and shuttering including strutting , propping etc . and removal of form for : suspended floors , roofs , landings , balconies and access platform . , centering and shuttering including strutting , propping etc . and removal of form work for: lintel , beams , plinth beams , girders , bressumers and cantilevers , reinforcement for r . c . c . work including straightening , cutting , bending , placing in position and binding all complete . cold twisted bars , random rubble masonry with hard stone in superstructure including levelling up with cement concrete 1:6:12 ( 1 cement : 6 coarse sand :12 graded stone aggregate 20 mm nominal size ) with cement mortar 1:6 ( 1 cement : 6 coars sand ) , centering and shuttering including strutting , propping etc . and removal of form for : foundations , footings , bases of columns , etc . for mass concrete . , r . c . c . work in walls , includ attached pilasters , buttresses , plinth and string courses , fillets , columns , pillars , piers , abutments , posts and struts etc . up to floor five level excluding cost of centering , shuttering , finishing and reinforcement , providing and laying cement concrete in kerbs , steps and the like at or near ground level excluding the cost of centering , shuttering and finishing . 1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size ) . , providing and laying brick work with locally best available bricks in cement mortar 1:6 ( 1cement:6 sand ) in super structure above plinth ( floor one level ) to floor two level . , extra for brickwork in super structure above floor two levels . , extra for brick work in square of rectangular pillars . , providing and laying half brick masonry with locally best available bricks in superstructure from plinth ( floor one level to floor two levels in cement mortar 1:4 ( 1 cement: 4 sand ) , replacing broken glasses panes with transparent acrylic sheets in doors / window / ventilators at any height including providing and fixing putty , clip etc . wherever required ( 4 mm thick ) . , providing gola 75x75 mm in cement concrete 1:2:4 ( 1 cement: 2 sand: 4 stone aggregate 10 mm and down graded ) including finishing with cement mortar 1:3 ( 1 cement:3 sand ) as per standard design , including cutting of chase wherever required . ( , grading roof for water proofing treatment with cement concrete 1:2:4 ( 1cement:2 coarse sand:4 graded stone aggregates 20 mm nominal size ) , prov . & mixing water proof compound , providing and laying brick work with locally best available bricks in cement mortar 1:6 ( 1 cement: 6 sand ) in foundation and plinth . , removing existing old dilapidated tar felting from roof terraces and disposal of the waste within 50 mtrs . lead as per the direction of the engineer-in-charge . , reinforcement for rcc works including straightening , cutting , bending , binding & placing in position complete . ( a ) ? ? ? ? mild steel , 6 mm dia , providing and laying in position in cement concrete of specified grade excluding the cost of centering and shuttering in retaining walls , return walls , repair ( any thickness ) including attached plasters columns piers abutments pillars post , dismantling wall plaster of skirting racking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 mtrs . lead . , dismantling cement concrete including disposal of materials / rubbish within 50 m . lead , 1:3:6 or richer mix . , demolishing brick work including stacking of serviceable material and disposal of unserviceable material within 50 mtrs . lead in cement mortar . , providing stone soling with hard stone including filling the voids with sand watering compaction , etc . complete as per specifications and direction of engineer-in-charge . , providing and laying four courses water proofing treatment with bitumen felt over roofs consisting of first and third courses of blown bitumen 85 / 25 or 90 / 15 conforming to is: 702 applied hot @ 1 . 45 kg per square metre of area for each cour , replacing broken glass panes with transparent acrylic sheet in doors / windows / ventilators at any height including provide fixing putty , clips etc wherever required . - ( 6 mm thick ) . , demolishing stones rubble masonry including stacking of serviceable materials and disposal of unserviceable materials within 50 mtr . lead in cement mortar at all heights , painting top of roofs with bitumen of approved quality at 17 kg per 10 m2 impregnated with a coat of coarse sand at 60 cu dm per 10 m2 including cleaning the slab surface with brushes and finally with a piece of cloth lightly soaked in with , providing and laying cement concrete in putting and bases for columns excluding the cost of centering and shuttering ( where required ) of mix 1:3:6 . ( 1 cement:3 sand;6 graded stone aggregates ) 40 mm nominal size . , 6 mm cement plaster of mix 1:4 ( 1 cement: 4 sand ) . , demolishing rcc work including stacking of steel bars and disposal of unserviceable material within 50 mtrs lead . , providing and laying random rubble masonry with hard stones in foundation and plinth including leveling up with cement concrete 1:6:12 ( 1 cement::6 sand:12 graded stone aggregate 20 mm nominal size ) up to plinth level with cement mortar 1:6 , cleaning tree leaves , all type of foreign materials , up rooting grass / weed etc . from the roofs of office buildings , workshops etc . including disposal of the waste materials to the dumping ground within 50 meter lead , cement concrete flooring 1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate ) finished with a floating coat of neat cement including cement slurry , but excludi