tender for day to day water supply sanitary maintenance and allied works at purbachal sq complex kolkata for 2025; 1 brick work with common burnt clay f.p.s. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor v level in all shapes and sizes in : 2 cement mortar 1:6 (1 cement : 6 coarse sand) 3 half brick masonry with common burnt clay f.p.s. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor v level. 4 cement mortar 1:4 (1 cement :4 coarse sand) 5 providing and fixing ist quality ceramic glazed wall tiles conforming to is: 15622 (thickness to be specified by the manufacturer), of approvedmake, in all colours, shades except burgundy, bottle green, black of any size as approved by engineer-in-charge, in skirting, risers of steps and dados, over 12 mm thick bed of cement mortar 1:3 (1 cement : 3 coarse sand) and jointing with grey cement slurry @ 3.3kg per sqm, including pointing in white cement mixed with pigment of matching shade complete. 6 providing and fixing is : 12817 marked stainless steel butt hinges with stainless steel screws etc. complete : 7 100x58x1.90 mm 8 75x47x1.80 mm 9 providing and fixing aluminium tower bolts isi marked anodised (anodic coating not less than grade ac 10 as per is : 1868 ) transparent or dyed to required colour or shade with necessary screws etc. complete : 10 150x10 mm 11 100x10 mm 12 providing and fixing aluminium handles isi marked, anodised (anodic coating not less than grade ac 10 as per is : 1868) transparent or dyed to required colour or shade with necessary screws etc. complete : 13 100 mm 14 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 excluding the cost of nosing of steps etc. complete. 15 40 mm thick with 20 mm nominal size stone aggregate 16 providing and laying ceramic glazed floor tiles of size 300x300 mm(thickness to be specified by the manufacturer), of 1st quality conforming to is : 15622, of approved make, in all colours, shades, except white, ivory, grey, fume red brown, laid on 20 mm thick bed of cement mortar1:4 (1 cement : 4 coarse sand), jointing with grey cement slurry @3.3kg/sqm including pointing the joints with white cement and matching pigments etc., complete. 17 providing and fixing on wall face unplasticised - pvc moulded fittings/accessories for unplasticised rigid pvc rain water pipes conforming to is 13592 type a, including jointing with seal ring conforming to is : 5382, leaving 10 mm gap for thermal expansion. 18 (a) bend 87.5°(i) 110 mm bend 19 (b) shoe (plain)(i) 110 mm shoe 20 providing and fixing unplasticised -pvc pipe clips of approved design to unplasticised - pvc rain water pipes by means of 50x50x50 mm hard wood plugs, screwed with m.s. screws of required length, including cutting brick work and fixing in cement mortar 1:4 (1 cement : 4 coarse sand) and making good the wall etc. complete. 21 110 mm 22 15 mm cement plaster on the rough side of single or half brick wall of mix : 23 1:4 (1 cement: 4 fine sand) 24 neat cement punning 25 providing and applying white cement based putty of average thickness 1 mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete. 26 repairs to plaster of thickness 12 mm to 20 mm 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 disposal of rubbish to the dumping ground, all complete as per direction of engineer-in-harge. 27 with cement mortar 1:4 (1cement: 4 coarse sand). 28 renewing glass panes, with putty and nails wherever necessary including racking out the old putty: 29 float glass panes of nominal thickness 4 mm (weight not less than 10kg/sqm). 30 renewal of old putty of glass panes (length) . 31 providing and fixing l shaped ms corner plates 1.50mm thick, of size 100x100x25 mm with ms screws for repairing corner of shutters. 32 easing, oiling and adjusting wooden door and window members (style/rail) or steel gates/shutters and fittings, including scrapping or chieselling wherever required, so as to make the shutters easily operable for shutter size upto 3 sqm. as per direction of the engineer-in-charge. 33 labour cost for repairing wooden door frame, shutters (style, rails, panelling etc.) of size upto 3 sqm and thickness 25mm to 40mm, by taking out old damaged shutters with or without frame, including ms grill if required, renewing the damaged portion by new wood and refixing the same in position with new hinges, including making good the damages of wall surface complete as per direction of the engineer-in-charge. (cost of wood for renewing style, rail, panel, panelling, new hinge etc. will be paid for seperately.) 34 supplying of chemicals/materials/manpower for repairs / rehabilitation /arresting water leakage/ water proofing treatment etc. as per direction of the engineer -in-charge. 35 anticor, the corrosion resistant chemicals for reinforcing bars, unique formulated water based passivating chemicals of engineering services international or equivalent. 36 bond-x (anaionic bonding agent of acryline-styrene copolimer in aqueous solution with ph value-7-8 of engineering services international or equivalent.) 37 permacrete, a plasticizer (sodium-napthalene-sulphonic acid formaldehyde condensate) in an aqueous solution, ph of 7 to 9 of engineering services international or equivalent). 38 permakar-1(whitish gel) as a part of permakar surface treatment to arrest running water lakage yhrough isolated points admixed with permakar-4 of engineering services international or equivalent). 39 permakar-4(grey powder) as a part of permakar surface treatment to arrest running water lakage yhrough isolated points admixed with permakar-1 of engineering services international or equivalent). 40 permakar-3(octadecanioc acid for structural water proofing of engineering service international or equivalent). 41 permanar (acrylic-steryne based polymeric compound for sealing hairline and other crack of engineering services international or equivalent). 42 mason average 43 beldar 44 demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of engineer-in-charge.. 45 in cement mortar 46 dismantling gi/pvc pipe with fittings and clamps including stacking within the compound as per direction of the engineer -in charge. 47 15mm to 50 mm diametre pipe. 48 dismantling fixtures where necessary as per direction of the engineer-in-charge. 49 flushing cistern, wash basin, sink, ewc , anglo indian wc etc. 50 cp/ brass/ ptmt/pvc/iron stop cock/ bib cock/ pillar cock/ wheel valve/gate valve etc. upto 50mm dia. 51 supplying of isi marked g.i. fittings for g.i. water pipe line work of required length and diameter. 52 (a) equal or reducing socket, elbow, tee etc. (i) 15 mm dia & 20mm dia. 53 (a) equal or reducing socket, elbow, tee etc. (ii) 25 mm & 32mm dia 54 (a) equal or reducing socket, elbow, tee etc. (iii) 40mm dia. 55 (a) equal or reducing socket, elbow, tee etc. (iv) 50mm dia. 56 (b) long screw/union (i) 15 mm dia & 20mm dia. 57 (b) long screw/union (ii) 25 mm & 32mm dia 58 (b) long screw/union (iii) 40mm dia. 59 (b) long screw/union (iv) 50mm dia. 60 (c )short pieces upto 150mm long (i) 15 mm dia & 20mm dia. 61 (c )short pieces upto 150mm long (ii) 25 mm & 32mm dia 62 (c )short pieces upto 150mm long (iii) 40mm dia. 63 (c )short pieces upto 150mm long (iv) 50mm dia. 64 dismantling wc pan (indian type) including breaking of cement concrete etc for repairing or renewing of damaged wc pan as per direction of the engineer-in-charge. 65 providing and fixing stainless steel a isi 304 (18/8) kitchen sink as per is:13983 with c.i. brackets and stainless steel plug 40 mm, including painting of fittings and brackets, cutting and making good the walls wherever required : 66 (a) kitchen sink with drain board(i) 510x1040 mm bowl depth 178 mm. 67 providing and fixing white vitreous china water closet squatting pan (indian type) : 68 orissa pattern w.c. pan of size 580x440 mm 69 providing and fixing white vitreous china pedestal type (european type/ wash down type) water closet pan. 70 providing and fixing p.v.c. low level flushing cistern with manually controlled device (handle lever) conforming to is : 7231, with all fittings and fixtures complete. 71 10 litre capacity - white 72 providing and fixing solid plastic seat with lid for pedestal type w.c. pan complete : 73 white solid plastic seat with lid 74 providing and fixing pvc. inlet connection for flush pipe connecting with w.c. pan. 75 providing and fixing white vitreous china wash basin including making all connections but excluding the cost of fittings : 76 flat back wash basin of size 550x400 mm. 77 providing and fixing p.v.c. waste pipe for sink or wash basin including p.v.c. waste fittings complete. 78 (a) flexible pipe (i) 32 mm dia 79 providing and fixing ptmt waste coupling for wash basin and sink, of approved quality and colour. 80 waste coupling 31 mm dia of 79 mm length and 62 mm breadth weighing not less than 45 gms. 81 providing and fixing chlorinated polyvinyl chloride (cpvc) pipes, having thermal stability for hot & cold water supply, including all cpvc plain & brass threaded fittings, including fixing the pipe with clamps at 1.00 m spacing. this includes jointing of pipes & fittings with one step cpvc solvent cement and testing of joints complete as per direction of engineer in charge. : internal work - exposed on wall 82 15 mm nominal outer dia. pipes. 83 20 mm nominal outer dia. pipes. 84 25 mm nominal outer dia .pipes. 85 40 mm nominal outer dia. pipes. 86 providing and fixing ptmt bib cock of approved quality and colour. 87 15mm nominal bore, 86 mm long. weighing not less than 88 gms. 88 providing and fixing ptmt stop cock of approved quality and colour. 89 15 mm nominal bore, 86 mm long. weighing not less than 88 gms. 90 providing and fixing ptmt pillar cock of approved quality and colour . 91 15mm nominal bore, 107 mm long. weighing not less than 110 gms. 92 providing and fixing ptmt grating of approved quality and colour. 93 (a) circular type. (i) 100 mm nominal dia. 94 providing and fixing ptmt ball cock of approved quality, colour and make complete with epoxy coated aluminium rod with l.p./ h.p.h.d. plastic ball. 95 15 mm nominal bore, 105 mm long. weighing not less than 138 gms. 96 providing and fixing ptmt swivelling shower, 15mm nominal bore. weighing not less than 40 gms. 97 providing and fixing unplasticised p.v.c. connection pipe with ptmt nuts, collar and bush of approved quality and colour. 98 15 mm nominal bore with 45 cm length. 99 cutting holes up to 30x30 cm in walls including making good the same: 100 with common burnt clay f.p.s. (non modular) bricks. 101 providing and fixing aqua cpvc high pressure ball valve(plastic ball) of approved quality including the cost of necessary upvc socket, pieces of pipes etc. required for the work complete as per direction of engineer-in-charge : 102 20mm nominal bore. 103 25mm nominal bore. 104 providing and fixing 15mm nominal bore, 195mm long ptmt shower arm. 105 providing and fixing soil, waste and vent pipes upvc soil waste pipe conforming to isi no.13592 1992 (type-b) manufactured by supreme or equivalent. 106 110 mm outer dia type-b pipe. 107 providing and fixing upvc fittings for new and repairs to soil waste and vent pipe(type-b) with necessary rubber ring, solvent cement, gasket etc. complete as per direction of engineer-in-charge. (a) 110 mm dia. 108 door bend (t/s) of required degree with access door. 109 single tee with door. 110 w.c. connector straight (reducer type) (125 x 110 mm). 111 p trap(125x110mm with wc ring). 112 cross tee with door 113 supplying, fitting and fixing pvc flushing cistern parts after removing the defective parts complete as per direction of the engineer-in-charge. 114 polythene syphone with nut , plunger plate, plunger rod and lifting device complete. 115 handle lever set for pvc flushing cistern. 116 repairing leakage/cleaning/ adjusting ball valve, syphone renewing washer of syphone of pvc cister, cleaning the layers of iron scaling deposited inside the pvc cistern by using acid etc. complete as per direction of the engineer-in- charge. 117 removing chokage and repairing leakage of water pipe lines as and when required including cost of jointing materials such as zinc, jute etc. require to sealing the leakage of joints (cost includes for necesary scafoldings require for out side pipe line of building upto floor-v level. cost for fittings and pipes if required will be paid seperately). 118 15mm to 50mm nominal dia pipe. 119 supplying, fitting and fixing c i brackets /15 mm dia gi pipe as brackets including two coats of painting as per direction of the engineer-in charge for wash basin, sink etc. 120 removing chokage of water closet. 121 removing chokage manually and by the help of split bamboo i.e sludge, mud and other materials from the vertical hci pipe lines over ground including cost of necessary scaffolding for cleanibg upto floor-v level complete as per direction of the engineer-in-charge: (a)vertical sw pipe line upto 150mm dia. 122 chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of engineer-in-charge 123 50 mm average thickness 124 25 mm average thickness 125 cleaning of reinforcement from rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry, all complete as per direction of engineer-in-charge. 126 bars upto 12 mm diameter 127 bars above 12 mm diameter 128 providing, mixing and applying bonding coat of approved adhesive on chipped portion of rcc as per specifications and direction of engineer-in-charge complete in all respect. 129 sbr polymer (@10% of cement weight) modified cementitious bond coat @ 2.2 kg cement per sqm of surface area mixed with specified proportion of approved polymer 130 providing, mixing and applying sbr polymer (of approved make) modified cement mortar in proportion of 1:4 (1 cement: 4 graded coarse sand with polymer minimum 2% by wt. of cement used) as per specifications and directions of engineer-in-charge. note: measurement and payment: the pre-measurement of thickness shall be done just after the surface preparation is completed and payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding / tapping with a blunt metal instrument and/or the 75mm size cube crushing strength at the end of 28 days to be not less than 30 n/sqmm2). 131 25 mm average thickness in 2 layers. 132 50 mm average thickness in 3 layers. 133 providing and fixing single scaffolding system on the exterior side of building/structure, upto 25 metre height, above ground level, including additional rows of scaffolding in stepped manner as per requirement of site, made with 10 cm dia. bamboo ties @0.90 metre apart fitting and fixing with necessary coir,nails etc. horizontal & vertical with working platform etc. and maintaining it in a serviceable condition for execution of work of uprooting plant,other building repairing works etc..of building for external works. the scaffolding system shall be stiffened with bracings, runners, connecting with the building etc, wherever required, if feasible, for inspection of work at required locations with essential safety features for the workmen etc., complete as per directions and approval of engineer-in-charge. the scaffolding will be reusable for 19 times and then new scaffolding of similar one will be made. payment is considered for all the sides of building of first scaffolding used for 19 times and then all new scaffoldings made for the purpose. 134 credit value for dismantled unserviceable/ serviceable departmental materials: 135 (a) g.i. pipe (i) 15mm dia. 136 (a) g.i. pipe (ii) 20mm dia. 137 (a) g.i. pipe (iii) 25mm dia. 138 (a) g.i. pipe (iv) 40mm dia. 139 (a) g.i. pipe (v) 50mm dia 140 (a) g.i. pipe (vi) 100mm dia 141 (i) (b) brass/gunmetal peets valve. 20mm dia. 142 (c )cp/brass bib/stop cock.(i) 15mm nominal dia. 143 (d) old f.p.s brick