Rehabilitation of 6 Nos. of Culverts between Km. 570.000 to km 584.715 on NH_66 in the State of Goa under NH(O) Annual Plan 2023_24.(Retender_2nd Call)

Amount

Removal of existing cement concrete wearing coat including its disposal complete as per Technical specification without causing any detrimental effect to any part of the bridge structure and removal of dismantled material with all lifts and lead upto 1000m (Thickness 75 mm).

Guniting concrete surface with cement mortar applied with compressor after cleaning surface and spraying with epoxy (MC Dur 1250 & Accelerated compound Torkrethilfe BE of MC Bauchemie or Equivalent) complete as per Technical specification.

Providing and inserting nipples with approved fixing compound MC Fix ST of MC Bauchemie or Equivalent after drilling holes for grouting as per Technical specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement/Epoxy.

Sealing of cracks/porous concrete by injection process through nipples/Grouting With Admixture MC Ein preshilf EH of MC Bauchemie or Equivalent)complete as per Technical specification b) cement 1:1

Patching of damaged concrete surface with polymer concrete (MC Dur 1250 & Accelerated compound Torkrethilfe BE of MC Bauchemie or Equivalent) and curing compounds Emcoril AC, initiator and promoter, available in present formulations, to be applied as per instructions of manufacturer and as approved by the Engineer.

Epoxy bonding of new concrete to old concrete.

Protective coating for steel structures-Providing & applying MC Bauchemie's MC Dur ZKE or Equivalent,a two component solvent containing Zinc enriched epoxy resin based protective coating for steel construction in marine climate & for construction which are heavily strained by atmosperic conditions and industrial atmospere which is resistant against solid & dissolved salts ,diluted consumption shall be 100-300 gm/m2 in two coats with approved shades blasting with Quartz-free abrasive,sand blasting etc. complete.the consumption shall be 100-300 gm/ m2 in two coats with approved shades including cost of materials,cleaning ,preparing the surface,chipping,removing loose dirt with wire brush & water ,labour.

Excavation in ordinary rock by manual means (Excavation in ordinary rock using manual means including loading in a truck and carrying of excavated material to embankment site with in all lifts and leads upto 1000 metres).

Rubble packing with hard laterite stone under floors including watering, ramming & consolidating etc. complete.

Plain/Reinforced cement concrete in open foundation complete as per drawing and technical specifications (B) PCC Grade M20.

Plain/Reinforced cement concrete in open foundation complete as per drawing and technical specifications (E) RCC Grade M25.

Supplying, fitting and placing HYSD bar reinforcement in sub-structure complete as per drawing and technical specifications.

Dismantling guard rails by manual means and disposal of dismantled material with all lifts and upto a lead of 1000 meters, stacking serviceable materials and unserviceble materials separately as per MORTH Specification 202.

Construction of RCC railing of M30 Grade in-situ with 20 mm nominal size aggregate, true to line and grade, tolurence of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequate space between vertical post for expansion, complete as per approved drawings and technical specifications.

Cautionary/Mandatory/Facility Information Sign Board with Defination plate Providing & fixing of cautionary sign board of Cautionary/Mandatory/Facility Information sign board with definition plate of size 200mmx900mm made out of retro reflective sheeting conforming to Type XI standards of ASTM D4956-09 & as per IRC-67: 2012 specifications, fully covered over 4mm thick ACP/2mm thick Al supported with back support frame of 35x35x35 mm mild steel angle. Board Shall be fixed to a vertical post of75x75x6mm mild steel angle of 3.6 mtr height and firmly fixed to the ground by means of properly designed foundation with M20 grade cement concrete 45 cm X 45 cm X 60 cm etc, 60 cm below ground level. 10 years warranty & a certified copy of three years outdoor exposure report from an independent lab as per IRC 67-2012 for Type XI retro reflective sheeting shall be submitted by the contractor.

900mm Triangle - Cautionary Sign

600 mm Triangle - Cautionary Sign

600 mm Circle - Mandatory Sign

300mm x 900mm Rectangle - Hazard Marker Sign

Protective coating -Paint with Emce Colourflex of MC Bauchemie or Equivalent with a priming coat @100 g/m2 & main polymer coating thickness 200-225 microns @400-450 g/m2 for two coats with approved shades including cost of materials,cleaning ,preparing the surface,chipping,removing loose dirt with wire brush & water ,labour for filling holes,cracks,joints etc.with one component polymer modified fine repair & cosmetic mortar,labour for applying above coating,scaffolding charges etc with all taxes complete as per IRC SP:80 Clause 6.5.1 & clause 2808 of MORT& H specifications latest edition.

Providing weep holes in Brick masonry/Plain/Reinforced concrete abutment, wing wall/return wall with 100 mm dia AC pipe, extending through the full width of the structure with slope of 1V :20H towards drawing foce. Complete as per drawing and Technical specifications.

Type - B, Providing and erecting a "Thrie" metal beam crash barrier \providing and erecting "Thrie Beam " Crash barrier comprising of following three factory made unites-viz. 1) Thrie Beam 2) Spacer Block 3) Vertical Post. The Thrie beam 3mm thick cold roll formed guard rail raw material Conforming to IS-5986-2011 with minimum Grade 255 & with minimum yield stress of 255 Mpa which is fixed by bolted connection to spacer block C-channel of size 150mm* 75mm & 5mm thick, 54.6cm height spaced 2meter centre to centre, fixed to Vertical Post C-channel of size 150mm*75mm&5mm thick cold roll formed section made from HR coils raw material conforming to IS-5986-2011 with minimum Grade 255 & with minimum yield stress of 255MPa, with 85cms free height above road or Ground level, and embedded to 115cms deep in cement concrete block of size.

TECH FAST REBUILD PVT. LTD.

MS Trimurthy construction