corrigendum - repair / maintenance of area drainage at various sectors of age charduar under ge ( north ) tezpur , note 1: ( applicable for all parts / items ) : the bidders / contractors are advised to read tender document , all drawings & all corrigendum / amendments and general condition of contracts before entry / quoting the rates . note 2:- attention to bidder is hereby invited to upload revised boq if published during their bid submission . uploading of incorrect / pre-revised boq shall be treated as non bonafide and rejected . fixed credit has been given in technical documents which shall be taken into account during acceptance of bid / tender . , demolition of cement concrete in ground floor and pavings n . exc 15cm thickness ( below or above the ground level ) ( un-reinforced ) and removing to a distance n . exc 50m distance complete all as specified and as directed . , m&l cement concrete in foundation 1:3:6 type c2 using 40mm graded crushed stone aggregate as in surface channels & drain complete all as specified and directed . , excavating in trenches , n exc 1 . 5 m wide and n exc 1 . 5 m in depth; for foundation , etc or for shafts , wells , cesspits , manholes , pier holes , etc . n exc 10 sq m on plan and n exc1 . 5 m in depth and getting out in soft / loose soil complete all as specified and as directed . , returning filling in , including spreading leveling watering and well ramming in layers n . exc 25cm thick in soft / loose soil for sewage pipe line / manhole and cleaning the site complete all as specified and as directed . , removing excavated materials ( soil ) n . exc 50 m and depositing where directed at level n . exc 1 . 5 m above the starting point , demolition and breaking of reinforced concrete pipes 300mm bore of pipe , classs np2 complete all as specified and as directed . , s&f reinforced concrete pipes 300mm bore class np2 , laid and jointed with collars complete all as specified and directed . , m&l for concrete bed to drain pipe of 300mm bore including packing under and completely surrounding in cement concrete 1:3:6 type c2 using 40mm graded crushed stone aggregate after they are laid and tested complete all as specified and directed . , demolition of brick work masonary , built in cement mortar or cement lime mortar including all quoins , arches , pillar etc but excluding ashlar facing , dressed stone work and pre-cast concrete articles complete all as specified and directed . , m&l for brick work with sub class b bricks , straight or curved on plan exc 6m mean radius , built in cm 1:6 complete all as specified and directed . , m&l for rendering 15mm thick plaster in cm 1:4 on fair faces of brick or concrete surfaces finished even and smooth with out using extra cement complete all as specified and directed . , extra for forming fair finished drain or channel 30cm inner grith in cement concrete , using extra cement , including forms , moulds , mitred / stopped ends etc complete all as specified and directed . note-inner girth shall only measured for payment . , m&l for pcc 1:3:6 type b1 using 20 mm graded crushed stone aggregate as in coping , kerbing , kneelers , apex stones , bed plates etc complete all as specified and directed .