Repairing of Damaged Launching Apron Downstream Hathnikund Barrage

Amount

Shifting of Blocks (old HSR 4.13(i)(a) and 5.6 (b)(i))

Supply of stone Boulder of requisite size confirming to PWD specification no. 3.31 read with 23.8 and 23.9 loading and unloading and staking if any with a lead 05 km

Drilling and grouting percussion drilling for 38 to 100 mm dia 600mm C/C both ways

Penetron Admix Durability crystalline admixture

PMM Repairs( FOR PATCH REPAIRS)- upto 25mm average thickness (in 2 layers) (a) Anticorrosive treatment by Providing and applying an epoxy based zinc rich anti corrosive primer having adhesive bond strength = 1.5 MPa as per ASTM D4541, and shall comply to per ASTM B-117 to be applied on well cleaned, fully exposed and all loose scale , rust free rust free surface obtained by grit blasting or suitable means , to be done with coverage @4.5sqm/litres to achieve a minimum thickness of 40microns DFT or as per direction of Engineer-In charge (b) Applying epoxy bond coat on the sound concrete substrate using approved spray machine and ensuring that no pin holes are visible. (In case pin holes are still visible after a coat, a second coat shall be applied to ensure absence of pin holes). Immediately after application of epoxy bond coat as above apply PMM (Polymer modified cementitious mortar) of 25 mm thickness. Bonding agent shall have Compressive strength(BS 6319 Pt.2)- 50 Mpa at 7 days, Flexural strength strength(BS 6319 Pt.3)- 35 Mpa at 7 days, Tensile strength (BS 6319 Pt.7)- 20 Mpa at 7 days, Shear Strength (BS 6319 Pt.4)- 10 Mpa at 7 days (c) PMM by providing and laying Renderoc HS Xtra of Fosroc,Shrinkage Comensated, single component, polymer modified, fibre reinforced cementitious repair mortar, over the tacky bond coat, that achieves Compressive strength (BS 6319 ) ) 50 MPa at 7 day , ) 70 Mpa at 28 days, Tensile Strength ) 4MPa, Flexural Strength ) 9Mpa at 28 days, Finishing the same with trowel carefully compacting the same around the rebars and finishing to bring it in line with existing concrete surface on the beams, slabs, piles etc., , complete in all aspect as per manufactur`s methodology. Rates include cost of all labour, materials, Tools and Plants,propping, scaffolding, shuettering, safety arrangment, quality control, testing complete as per specifications and direction of engineer in charge. (d) Item rates of PMM 25 mm are inclusive of all materials, labour, tools and plants, propping, scaffolding, safety arrangement, quality control, testing and all items of works from above quality control etc. complete in all respect, as per specifications and as directed by Engg.-in-charge. Work shall be complete only after proper wet curing has been done by contractor and surface has been evaluated for satisfactory quality by sounding/tapping with a blunt metal instrument, and testing of PMM cubes filled up and cured by contractor during the application of PMM (75mm size cube crushing strength at the end of 28-day to be not less than 45 N/sqmm) in addition to NDT Testing as per under item of `Testing of works`

Credit of steel

Bidder Name

Amount

NARENDER MALIK (GSTN-06ACQPS7118H1Z6) BID ID -1029240

vijay kansal contractor (GSTN-06AKYPK2355A2Z5) BID ID -1035768

Krishna Construction Co (GSTN-06AALFK6441Q1ZP) BID ID -1035855

TEJWANT RAI GOVT CONTRACTOR (GSTN-06AAJFT1954B1ZD) BID ID -1036195

M/s. Amrit Lal Nagpal(GSTN-NA)--1035721

Krishna Construction Co

M/s. Amrit Lal Nagpal

vijay kansal contractor

NARENDER MALIK

M/s. Amrit Lal Nagpal

Krishna Construction Co

NARENDER MALIK

TEJWANT RAI GOVT CONTRACTOR