Tender For Improvements To Water Supply System At Poonamallee Municipality.; 1 Earth work excavation for foundation in Hard stiff clay, stiff black cotton, hard red earth, shales murram, gravel,stoney earth and earth mixed with small size boulders SS.20B and Sand,silt or other loose soil,wet sand,or silt not under water, light black cotton soil, sandy loam ordinary soil and to full depthwith intiallead and lifts and cleaning and levelling the site etc.,complete (a) Footings - First Depth - 2.00m OHT & STAIRCASE 2 Footings - Second Depth - 2.00m to 3.00m depth 3 Supply and filling the foundatiion and basement with clear river sand in layers complying with standard specification including consolidation and watering etc. complete and as directed by TWAD Board Officers. 4 Plain cement concrete with P.C.C 1:2:4 (one cement, four sand and eigth course aggregate) using 40 mm H.B.G stone for levelling course including cost of mixing cement, placing, ramming and curingetc., complete as directed by the TWAD Board Officers. 5 Supplying and erecting steel centering including necessary supports for plane surfaces for Reinforced Cement Concrete works such as column footings, column pedestals, plinth beams, grade beams, staircase steps, etc. which require only nominal strutting using mild steel sheets of size 90cm x 60cm and 10 BG stiffened with welded mild steel angles of size 25mm x 25mm x 3 mm for boarding, laid over silver oakjoists of size 10cm x 6.5cm spaced at about 75cm centre to centre or at suitable intervals etc. complete in all floors complying with standard specifcation - Plain SurfacesBelow GL (a) Plain SurfacesBelow GL 6 Curve SurfacesBelow GL 7 Column SurfacesBelow GL 8 Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 3.29 M height for plane surfaces as detailed below in all floors with all cross bracings using Mild Steel sheets of size 90 x 60 cm and 10 BG stiffened with welded Mild Steel angle of size 25mm x 25mm x 3 mm for boarding laid over silver oak joists of size 10cm x 6.50 cm spaced at abote 90 cm centre to centre and supported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc. complete complying with the standard specificaiton. - For plane surfaces such as RCC floor slab, roof slab, beams, lintels, bed blocks, landing slab, waist slab, portico slabs and beams, etc. (a) Plain Surfaces0.00m to 3.30m 9 Plain Surfaces3.00m to 4.30m 10 Plain Surfaces at 5.30m to 6.30m 11 Plain Surfaces at 6.30m to7.30m 12 Plain Surfaces at 7.30m to8.30m 13 Plain Surfaces at 9.30m to10.30m 14 Plain Surfaces at 10.30m to11.30m 15 Plain Surfaces at 11.30m to12.30m 16 Plain Surfaces at 13.30m to14.30m 17 Plain Surfaces at 15.30m to16.30m 18 Plain Surfaces at 17.30m to18.30m 19 Plain Surfaces at 19.30m to20.30m 20 Plain Surfaces at 20.30m to21.30m 21 Centering for soffits of RCC slabs of plane surface like lintels, beams ,etc.,including strutting 3m high using mild steel sheets of size 90cm X60cm X and B.G 10 stiffened with M.S angles of size 25mm X 25mm X 3mm laid over silver Oak (C.W) joists of size 10cm X 6.5cm (spaced at about 90cm c/c )and supported dy casurina props of 10cm to 13cm dia (spaced of 75cm C/C) complying with standard specification and directed - For plane surfaces such asrectangular or square RCC columns, sunshades, top and bottom slab of RCC boxing, etc. (a) Column Surfaces0.00m to 3.30m 22 Column Surfaces 3.00m to 4.30m 23 Column Surfaces 4.30m to 5.30m 24 Column Surfaces at 5.30m to 6.30m 25 Column Surfaces at 6.30m to7.30m 26 Column Surfaces at 7.30m to8.30m 27 Column Surfaces at 8.30m to9.30m 28 Column Surfaces at 9.30m to10.30m 29 Column Surfaces at 10.30m to11.30m 30 Column Surfaces at 11.30m to12.30m 31 Column Surfaces at 12.30m to13.30m 32 Column Surfaces at 13.30m to14.30m 33 Column Surfaces at 14.30m to15.30m 34 Column Surfaces at 16.30m to17.30m 35 Column Surfaces at 17.30m to18.30m 36 Column Surfaces at 18.30m to19.30m 37 Column Surfaces at 19.30m to20.30m 38 Column Surfaces at 20.30m to21.30m 39 Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 3.29 M height for plane surfaces as detailed below in all floors with all cross bracings using Mild Steel sheets of size 90 x 60 cm and 10 BG stiffened with welded Mild Steel angle of size 25mm x 25mm x 3 mm for boarding laid over silver oak joists of size 10cm x 6.50 cm spaced at abote 90 cm centre to centre and supported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc. complete complying with the standard specificaiton. - For Curved surfaces such as RCC floor slab, roof slab, beams, etc.(a) Curved Surfaces at 14.30m to15.30m 40 Curved Surfaces at 15.30m to16.30m 41 Curved Surfaces at 16.30m to17.30m 42 Curved Surfaces at 17.30m to18.30m 43 Curved Surfaces at 18.30m to19.30m 44 Curved Surfaces at 19.30m to20.30m 45 Curved Surfaces at 20.30m to21.30m 46 Providing and laying in position Standardised Concrete Mix M-20 Grade in accordance with IS 456 - 2000 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement contenet of 325Kg/ cum and maximum water cement ratio of 0.55 including admixture (Plasticiser / super plasticiser) in recommended proportions as per IS 9103 to accelerate, related setting of concrete, improve workability without imparing strength and durability with about (5.0cum), 7730Kg of 20mm machine crushed stone jelly and with about (3.3 cum), 5156kg of 10 - 12mm machine crushed stone jelly and with about (4.79cum) 7670 kg of Crushed Stone Sand (M- Sand), but excluding cost of reinforcement grill and fabricating charges centering and shuttering but including laying, vibrating with mechanical vibrators, finishing, curing, etc and providing fixtures like fan clamps in the RCC floor / roof slabs wherever necessary without claiming extra cost etc., complete complying with standard specification and as directed by the departmental officers - (a) For 1.5m Below G.L 47 For 4.5m Above G.L 48 For 4.51m to 7.32m Above G.L 49 For 7.32m to 10.50m Above G.L 50 For 10.50m to 13.50m from G.L 51 13.50 - 16.50m Height 52 16.50 - 19.50m Height 53 Supply and fabrication of steel required for all RCC items of works involved in the schedule, cost of steel at site fabrication, labour charges for cleaning the rods straightening, cutting, bending, tying grills, including overlapping to the required length whenever necessary and placing the reinforcement in position as as per design given and specified in the drawings, including cost of binding wire, provision of spacer bars, cover blocks and all other incidental charges etc complete as per standard specification 54 Painting two coats of newly plastered wall surface with approved cement paint over cement plastered wall surface, ceiling andincluding preparing the surface, clean removal of dirt and including necessary plaster of paris putty wherever required and cost of painting materials, brushes, preparation of surfaces and scaffolding charges etc., complete complying with standard specification and as directed by the departmental officer 55 Supply and delivery of 600mm dia FRC manhole frame to have clear opening of 600mm dia to suit 600mm dia FRC Cover Heavy Extra dutyto duty stores on as per IS 12592:2002 to its latest revision with reinforcement details for covers and frames. 56 Providing cut stone set in C.M 1:3 for inlet pipe. 57 Refilling the outside of the sump with excavated earth(other then sand) complying with standard specification for filling the foundation including watering consolidation etc., complete as directed by the TWAD Board Officers. 58 Supply and delivery of DI D/F pipe and specials and other DI specialsand IS 1538/1984 and as amended from time to time for delivery at site of work including all taxes, duties, loading, freight, unloading and stacking at site etc complete 59 DUCTILE IRON CLASS PN10 FLANGED PIPES (a) 4mts length - 200mmdia double flanged pipe for inlet, overflow 60 4mts length - 350mmdia double flanged pipe for outlet 61 Ventilator 62 Ladder 63 Handrails 64 Staircase 65 Drilling of Borewells anywhere in Tamilnadu including transportation from one place to another with in Tamilnadu in alluvial soil sedimentary strata of clay and sand stone shale pebbles boulders etc.By first taking a pilot bore of 140 mm/150mm dia and then enlarging to required dia direct or reverse rotary mud circulation method using rotary rigs, fuel, labour and drilling bentonite and water required for drilling at site ( Site will be shown by the TWAD Board Officers) including construction of mud pit.(TWAD SOR24-25 PG.NO 302) 66 Reaming from 140/150 mm dia pilot bore to 300 mm dia bore as directed by the TWAD Board officers.(TWAD SOR24-25 PG.NO 302) 67 Supply and delivery of unplasticisedPVCcasing pipes of the following diametre in 3 metres length with screwed and scoket ends and centering guides for every 15m length of pipes as per IS 12812 / 92 and DN 4925 and as amended from time to time to suit 68 Supply and delivery ofBore cap using M.S. Flat of size 1 cm x 3 mm and M.S. sheet on top with bolting arrangements for securing the cap in position (Bore caps with M.S. Couplings need not be made) (TWAD SOR24-25 PG.NO 299) 69 Supply of 150 mm Nominal dia ( 6) dia PVC deep well bottom cap at site of work (TWAD SOR24-25 PG.NO 299) 70 Labour Charges for inserting PVCCasing pipes assembly (with slots or without slots) in the drilled hole including jointing the pipes with PVC Couplers with Cement paste etc., complete, supply and packing the annular space with pebbles of size and quality as approved by the Executive Engineers of TWAD Board (TWAD SOR24-25 PG.NO 301) 71 Supply and delivery of clear water vertical wet type submersible pumpset suitable for 150mm dia borewell conforming to IS 8034/2002 as amended thereafter and BEE 3 Star Rated capable of discharging noted LPM against head of water column due to all causes. The pump shall be with stainless steel shaft and dynamically balanced bronze or Cast SS impeller, brass screws and CI FG 200 grade pump bowl/diffuser with ISI mark. The pump shall be directly coupled to a continuos rated two pole suitable wet type vertical squirrel cage induction motor asper IS 9283 /1995 as amended there after, suitable for operation in AC three phase 415 V+/-10%, 50HZ +/- 5 % 72 Labour charges for the erection of submersible pumpset in borewell including fixing and jointing submersible cable with proper clamps upto the starter to required depth and also fixing of riser pipes to the required depth valves erection clamps, pressure gauges upto the exterior wall of pump room and erection of panel board consisting of TPICN switches starter, Voltmeter, Ammeter, three pilot (indicating) lamps capacitor single phasing preventor, water level guard and laying and jointing the cables and twin earthing as per IE rules etc., complete and testing the pumpset and trail run for 10 days. 73 Supply and delivery of Star-Delta starter confirming to IS 13947 and IEC 947 suitable KW rating for operation in AC/ three Phase/50HZ(+/- 5%) and 415V (+/- 10%) including 3 pole magnetic contactor with under voltage release - 3 nos., CT operated Ammeter (65 mm dia) with suppressed scale, Voltmeter (65mm dia), Voltmeter selector swicth, Minature circuitr braeker, Thermal Overload relay, Air Break contactors suitable for next Standard higher KW rating, Single phasing preventor, dry running preventor and On/Off Push button switches, wiring with 1 sq.mm/4 sq. mm copper pvc insulated cable, powder coated vermin proof box, including the capacitor(the cost ofcapacitor is to be taken separately). 74 Supply and devlivery of 3 core 4.0 sq.mm copper flat type cable as per IS. 694/1990 75 Charges for developing the Borewell with air compressor of 600 CFM capacity (Minimum 8 Hours) including transportation, labour and fuel charges for compressor as directed by TWAD Officers and conducting yield test by V notch method. (TWAD SOR24-25 PG.NO 305) 76 Earth work excavation and depositing on bank with initial lead of 10 m and lift of 2 M in narrow trenches having bed width 1.25m & below for laying of pipes for water supply and sewerage works in the following type of soils as directed by Departmental officers. Sand, silt or other loose soil, wet sand or silt not under water light black cotton soil, sandy loam and ordinary soil.SS20B (TWAD SOR 2024-2025, Pg 192) 77 Supplying and conveying to site, the following sizes of HDPE pipesof class PN10 (PE-100)pipes confirming to IS:4984/1995, as specified in Technical Specifications in standard lengths including labour charges for loading, unloading and stacking at site and transportation charges etc., complete as per standard specifications and as directed by the Engineer in Charge (TWAD SOR 2024-2025, Pg 14) 78 Lowering HDPE pipes,and specials to trench and layingtopropergradeandalignmentandas directed by the Department Officers (TWAD SOR 2024-2025, Pg 161 ) 79 Jointing HDPE, Pipes and Specials by butt fusion welding / electro fusion welding joints using fusion equipment as per ISO 21307-2011 and as per IS 7634 (part-2) : 2012 including cost of hire charges for butt fusion equipment power supply arrangements etc., complete as per directed by Department Officers. (TWAD SOR 2024-2025, Pg 166 ) 80 Supply, delivery of HDPE Specials As Per IS 1736-1995 including unloading, transportation and stacking charges. Specials for HDPE pipes as per IS 8360/1977/Part 1(Reaffirmed 1992) Part II and III(Reaffirmed 2002). Reaffirmed to IS 4984-2016 conveyance to work site etc., complete as directed by the Engineer in charge 81 Supply, delivery of HDPE Specials As Per IS 1736-1995 including unloading, transportation and stacking charges. Specials for HDPE pipes as per IS 8360/1977/Part 1(Reaffirmed 1992) Part II and III(Reaffirmed 2002). Reaffirmed to IS 4984-2016 conveyance to work site etc., complete as directed by the Engineer in charge (a) Equal Tees 82 Bends - 90 Degree Bend PN6 (TWAD SOR 2024-2025, Pg 17) 83 End Caps (TWAD SOR 2024-2025, Pg 9) 84 Barricading work (Where, there is less traffic areas and broader roads etc.) for laying of pipe line using casurina poles at 1.50m center to center (8cm to 10cm dia and 1.80m height) vertical with horizontal poles in three rows including painting the vertical poles in the road facing sides with ready mix paint, tying the vertical and horizontal poles with coir rope including fixing charges and fixing 75mm dia reflectors including earth work excavation for fixing vertical posts and finally removing and stacking the materials safely for further use etc., complete and as directed by Department officers. (TWAD SOR 2024-2025, Pg 209) 85 Barricading work (Where, there is less traffic areas and broader roads etc.) for laying of pipe line using casurina poles at 1.50m center to center (8cm to 10cm dia and 1.80m height) vertical with horizontal poles in three rows including painting the vertical poles in the road facing sides with ready mix paint, tying the vertical and horizontal poles with coir rope including fixing charges and fixing 75mm dia reflectors including earth work excavation for fixing vertical posts and finally removing and stacking the materials safely for further use etc., complete and as directed by Department officers. (TWAD SOR 2024-2025, Pg 209) 86 Refilling the trenches with excavated earth (other than sand) in layers and watering, ramming and consolidation as per standard specification etc complete and as directed by Engineer in charge (TWAD SOR 2024-2025, Pg 295,296) 87 Testing of pipes for water supply with hydraulic testingequipment by filling with water (includingcost of water) and testing to recommended pressure in convenient stretches and attendingthe bursts if any occured during the test,excluding the cost of pipes but includingotherincidential and operational charges etc., complete for the following diametres of pipes. (TWAD SOR 2024-2025, Pg 173)
