Repairing of Column and Beams in Basement of Shakti Bhawan Lucknow

Amount

Laying and Jointing PVC Pipe. Heading

Dismantling existing plaster including disposal of refuse as directed by the Engineer-I/C within a distance of 60 M.

Dismantling reinforced cement concrete or reinforced brick work, including stacking of dismantled materials as directed by the Engineer-Incharge within a distance of 60 metres.

Dismantling cement concrete or brick or granolithic floors including base concrete and including stacking of dismantled materials as directed by the Engineer In-charge within a distance of 60 metres

Extra for cutting reinforcement bars manually/ by mechanical means in R.C.C. or R.B. work (Payment shall be made on the cross sectional area of R.C.C. or R.B. work) as per direction of Engineerin-charge.

Extra for scrapping, cleaning and straightening reinforcement from R.C.C. or R.B. work.

RCC work with cement, approved coarse sand (F.M. 1.8 to 2.5) and 2 cm gauge graded approved hard stone ballast like grainite, quartzite etc from Dalla, Jhansi or other quarries in proportion 1:1:2 in RCC T beam-slab and column, excluding supply of reinforcement & its bending but including its fixing and binding the same with binding wire, including cost of all other materials labour and T&P .

S/mixing approved water proofing compound (CICO,DR FIXIT etc) in cement mortar in plaster or concrete work in the proportion as recommended by the manufacturer

S/mixing Admixture of Sika Plastocrete/Fosroc Conplast WL in cement mortar in plaster or concrete work in the proportion as recommended by the manufacturer.

Mild Steel or Iron work in heavy sizes such as trusses built up gates, door frames, record, racks roof work gates etc. wrought to required form including holes rivetting or welding where necessary and also fixing in proper position and alignment including cost of all materials supplied by contractor.

TMT/Tor steel in plain work such as reinforced concrete or reinforced brick workof Tata make (when not included in an over all rates) wrought to required shape as necessary including bending for proper completion of the work and including supply of steel its wastage, bend, hooks and authorized overlapping shall be measured. (Steel shall be arranged by the contractor)

Centering and shuttering including strutting, propping etc. and removal of form for Suspended floors, roofs, landings etc.

Makeing 'V' groove of 5mm wide and 5mm deep over crack line by electrically operated angle grinder with diamond concrete saw blade and cleaning it by air blower as directed by Engineer-in-charge.

Sealing of exposed 'V' groove of 5mm deep and 5mm wide with solvent-free, moisture tolerant, thixotropic, two part structural adhesive and epoxy repair mortar cum surface levelling mortar. Product: Sikadur®-31 IN./ Nitobond PC30 or equivalent chemicalYield: 0.6 ltr/kg. Product requirements: Conforms to ASTM C 881-78, Type I, Grade 3, Class B+C; compressive strength > 60 N/mm2 (14 days) according to ASTM C 881; bond strength > 11 N/mm2 (7 days) according to ASTM C 882.

Drilling and fixing injection packers in RC members including, Drilling Holes: Drilling holes in structural members at the intervals as per recommendation of engineer in charge. Cleaning of holes: Clean the holes by air blower prior to fixing nozzles. Fixing of Packers: Insert 12 mm dia., 100~114 mm long injection packers in cleaned holes with structural grade epoxy adhesive like Sikadur-31 or equivalent. Cutting of Packers: Cut the packers by cut of wheel after completion of grouting without damaging structural elements.

Providing and applying Sikadur-52 LP IN/Conbextra EP10 or equivalent chemical, a two part, solvent-free, low viscosity injection-liquid, based on high strength epoxy resin, according to specification. The epoxy injection system must have a mixed density of 1.1 kg/l at +27°C and the viscosity of ~250 mPas at +30°C. The epoxy injection should have following minimum physical properties: Compressive Strength according to ASTM C 579 at +30°C in 7 days should be ≥ 70 N/mm2; Tensile Strength should be ~ 50 N/mm2 after 7 days at +30°C according to ASTM D 638; Bond Strength to concrete according to ASTM C 882 should be ~7.5 N/mm2 after 2 days at +30°C & ~10.8 N/mm2 after 14 days at +30°C; Flexural strength according to ISO 178 at +30°C in 7 days should be ~50 N/mm2; Tensile Modulus should be ~2000 N/mm2 after 7 days at +30°C according to ASTM D 638; Tensile Elongation ~1.9 % according to ASTM D 638; Water absorption should be ~0.6 % after 24 hours water immersion according to ASTM D 570; Material should not shrink as per ASTM C 883. The manufacturer must be an ISO 9001 & 14001 certified and valid certificates must be produced as proof.

Structural Strengthening with Sika Carbon Fiber Wrap & Epoxy Adhesive Sikadur-330 Supply and apply a stitched, one directional, high strength CFRP fabric SikaWrap® 230C/Nitrowrap GW or equivalent chemicalin single layer over cloumns as per specification after surface preparation by rounding off sharp edges to 25 mm radius and cleaning it properly including thixotropic epoxy based impregnating resin / adhesive Sikadur®-330 for low density fabric for base and top coat. Wrapping the CFRP fabric to girders at desired orientation using tamping rollers to avoid any air voids etc. and sprinkling sand over it as per direction and satisfaction of Engineer-incharge. CFRP product used shall have minimum requirements: tensile strength (nominal) = 3800N/mm2; tensile E – modulus = 2.5 KN/mm2; elongation at break (nominal): 1.8%; fabric design thickness = 0.131 mm.

Cementitious overlay over the SikaWrap®fabric and protective coating,Supply and apply additional layer of Sikadur®-330/Nitrowrap 40 or equivalent chemical resin must be applied over final laminating layer (max. 0.5 kg/m2) and broadcast whilst still wet with Sikadur®-501 quartz sand,which will improve the adhesion of the overlay If a coloured coating is to be applied, the ‘wet’ Sikadur®-330 surface can also be smoothed with a brush.

6 mm. thick plaster with 1:3 cement & coarse sand including labour, materials & T&P etc. required for proper completion of the work.

3 mm thick floating coat of neat cement finish including supply of all materials,labour and T&P etc. required for proper completion of the work. (cement consumtion 0.044 bag/Sq.m.)

Applying two coat Tapcrete mixed with White Cement and water to proper consistany on leaky surface including supply of all materials, labour etc. required for proper completion of work.

Disposal of rubbish / debris out side the UPPCL area as per direction of Er/in- charge including cartage, labour and materials, T&P etc. required for proper completion of the work. (No. deduction for voids shall be made).

White washing three coat including supply of all materials, labour and T&P etc. required for proper completion of the work.

SUMITRA CONSTRUCTIONS

M/S Rajesh Tiwari