Constraction of Apron Phase-III at Patna Airport.

Amount

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 1:4:8 (1 cement : 4 coarse sand (zone-III): 8 graded stone aggregate 40 mm nominal size).

Centering and shuttering including strutting, propping etc. and removal of form work for :Foundations, footings, bases for columns

Centering and shuttering including strutting, propping etc. and removal of form work for : Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

Steel reinforcement for R.C.C. work including straightening, cutting,bending, placing in position and binding all complete upto plinth level.:Thermo-Mechanically Treated bars of grade Fe-500D or more.

Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge; for the following grades of concrete. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the specified minimum cement content, the contractor shall (i) All works upto plinth level (a) Concrete of M35 grade with minimum cement content of 370 kg /cum.

Add / deduct for using extra/ less cement in the items of design mix (Item no.6 ,17 & 18) over and above the specified cement content therein.

Demolishing brick work manually/by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 m lead as per direction of Engineer-in-charge.:In cement mortar

Demolishing R.C.C. work by mechanical means and stockpiling at designated locations and disposal of dismantled materials up to a lead of 1 kilometre, stacking serviceable and unserviceable material separately including cutting reinforcement bars.

Prepartion and consolidation of sub grade with power road roller/Vibratory road roller of 8 to 12 tonne capacity, dressing to camber and consolidating with road roller including making good the undulations etc. and re-rolling the sub grade.

Dismantling of flexible pavement (bituminous courses) by mechanical means and disposal of dismantled material up to a lead of 1 kilometre,as per direction of Engineer-in-charge.

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. Nominal concrete 1:4:8 or leaner mix (i/c equivalent design mix)

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Preparation of granular sub-base by providing close graded material, conforming to specifications mixing in a mechanical mix plant at OMC, carriage of mixed material by mechanical transport to work site, for all leads and lifts, spreading in uniform layers of specified thickness with mechanical means including neatly leveling & dressing on prepared surface and compacting with vibratory power roller to achieve the desired density, complete and as per direction of Engineer-in-charge

Providing, laying, spreading and compacting graded stone aggregate (size range 53 mm to 0.075 mm ) to wet mix macadam (WMM) specification including premixing the material with water at OMC in mechanical mix plant, carriage of mixed material by tipper to site, for all leads & lifts, laying in uniform layers with mechanical paver finisher in sub- base / base course on well prepared surface and compacting with vibratory roller of 8 to 10 tonne capacity to achieve the desired density, complete as per specifications and directions of Engineer-in-Charge.

Construction of dry lean cement concrete sub base over a prepared subgrade with coarse and fine aggregate conforming to IS:383, the size of coarse aggregate not exceeding 25 mm, aggregate cement ratio not to exceed 15:1, aggregate gradation after blending to be as per specifications, cement content not to be less than 150 Kg/cum, optimum moisture content to be determined during trial length construction, concrete strength not to be less than 10 Mpa at 7 days, mixed in a batching plant, transported to site, for all leads & lifts, laid with a mechanical paver, compacting with 8-10 tonne vibratory roller, finishing and curing etc. complete as per direction of Engineer-in-charge.

Providing and laying Pavement Quality Concrete (PQC) produced in a batching and mixing plant having a Characteristic flexural strength i.e. flexural strength of 4.1 MPa at 28 days using Ordinary Portland Cement of 45/53 grade or Portland Pozzolana Cment or Portland Slag cement conforming as per relevant IS codes, to be mixed at site, with 0.5% Super plasticizer by mass of cementitious material, fine aggregate, graded stone aggregates of 40mm nominal size in appropriate proportion as per specification and job mix formula, laid in panels as per drawings/desing as approved by the Engineer-In-charge using Slip form Paver or Fixed form paver including anti friction layer, joint filler board, making necessary provision for expansion, dummy and construction joint including filling with Polysulphide sealant fo approved make, curing and making profile, complete as per direction of Engineer-in-Charge and specifications, The item for execution shall include all operations making pavement for intended use but not limited to following: (i) Polyethylene sheet (White in color) of thickness 400 micron conforming to IS: 2508 with 6mm thick fine sand layer. (ii) Proving and laying in position for expansion joint, 25mm thick pre-cut Synthetic joint filler board of approved make conforming to IS : 1838(Part 3)-2011, 45mm from top(to be removed at the time of filling of Ploysulphide sealant). (iii) Mechanically cutting dummy joints 3mm wide x 1/3rd thickness of slab which is subsequently widened to 10mm for the top 25mm depth and construction joints10mm wide x 25mm deep as per specification. (iv) Proving and laying in position Ploysulphide sealant of approved make conforming to BSD-5212-1990 or IS::P 11433-1995 in expansion/ construction/ dummy joints including rounding off edges, applying 2 coats of approved primer compatible with the brand of Ploysulphide and preparing the surface and applying masking tape along the edge of joint to prevent accidental spillage of sealant on top surface and to give neat finish to the sealant and removing the masking tape after application of sealant etc. as per the details below: (a) Expansion joint of size 25mm wide and 10mm deep oer 30mm dia expanded closed-cell Ployethylene foam back-up/backer rod of minimum density 22 Kg/Cum, as per manufactures's specifications and specified sketch. (b) Construction Joints of size 10mm wide and 10mm deep over 12mm dia expanded closed-cell Polyethylene foam back-up/backer rod of minimum density 22 Kg/Cum, as per manufactures's specifications and specified sketch. (c) Dummy Joints of size 10mm wide and 10mm deep over 12mm dia expanded closed-cell Polyethylene foam back-up/backer rod of minimum density 22 Kg/Cum, as per manufactures's specifications and specified sketch. (v) Making profile as per DGCA CAR, panel drawing showing dummy, construction, expansion joints location. Note: (i) Areas inaccessible to paving equipment shall be constructed by manual/hand guided method. Areas in which manual/hand guided methods of construction become indispensable shall be got approved by the Engineer-in-Charge in writing in advance. (ii) The quantity of cement, type of cement and super plastizcizer for one cum. of finished concerete specified are for tendering purpose only. The contractor shall quote his rates assuming quantity of OPC cement as 360 Kgt/Cum or 400Kg of Portland Pozzolana Cement/Portland Slag cement. in addition, if the actual quantity of cement & super plasticizer required as per loboratory mix design varies from the quantity assumed above, necessary cost adjustment for deviation in the quantity of cement and super plasitcizer as per mix design, if any, shall be done as per the rate of cement and super platicizer in actual supply voucher from manufacturer/authorized dealer at the time of excution. In the case of authorized distrubutor, the rate may be authenticated by the manufacturer. The rate of cement and super plasticizer exclusive of GST shall only be considered for payment.

Painting runway/taxi track/apron marking with adequate nos of coats to give uniform finish with road marking paint of superior make as approved by the Engineer-in-charge, i/c cleaning the surface of all dirt, scales, oil, grease and other foreign mater;al etc. and lining out complete.: New work (Two or more coats)

Providind and Erecting 2.4 mtr high temporary barricading at site. The item shall consist followings( Note :- One time payment shall be made for providing barricading from start of work till completion of work i/c shifting. The barricading provided shall remain to be the property of the contractor on completion of the work):- (i)Providing and erecting 2.40 metre high temporary barricading at site made of M.S Sheet 1.63mm thick as per drawing/direction of Engineer-in-Charge which includes writing and Painting, arrangement for traffic diversion such as traffic signals during construction at site for day and night, glow lamps, reflective signs, marking, flags, caution tape as directed by the Engineer-in-Charge. The barricading provided shall be retained in position at site continuously i/c shifting of barricading from one location to another location as many times as required during the execution of the entire work till its completion. Rate include its maintenence for damages, painting, all incidentals, labour materials, equipments and works required to execute the job. The barricading shall not be removed without prior approval of Engineer-in-Charge. (ii) Providing and fixing concertina coil fencing over the 2.4 m heigh temporary barricades with punched tape concertina coil 600 mm dia 10 metre openable length (total length 90 m), having 50 nos rounds per 6 metre length, upto 3 m height of wall including angle iron 'Y' shaped placed 3.00 m apart and with 9 horizontal R.B.T. reinforced barbed wire, stud tied with G.I.'staples and G.I. clips to retain horizontal, including necessary bolts or G.I. barbed wire tied to angle iron, all complete as per direction of Engineer-in-Charge, with reinforced barbed tape(R.B.T.)/Spring core (2.5mm thick) wire of high tensile strength of 165kg/sq.mm with tape (0.52 mm thick) and weight 43.478 gm/metre(cost of M.S. angle shall included in the item)

Carrying out Plate Load test to determine Modulus of Subgrade reaction (K - value) at sugrade/ subbase / base layer or at locations decided by the Engineer-In-Charge as per IS Code 9214-1979 and submission of test results as per direction of Engineer -in- Charge. The test should be carried out by the specialised agency/ firm as approved by the Engineer -In Charge.

Supplying and filling in plinth with sand under floors, including watering, ramming, consolidating and dressing complete

Centering and shuttering including strutting, propping etc. and removal of form for : (a) Suspended floors, roofs, landings, balconies and access platform

Steel work welded in built up sections/ framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required. In gratings, frames, guard bar, ladder, railings, brackets, gates and similar works

Providing and laying Non Pressure NP-3 class (Medium duty) R.C.C. pipes including collars/spigot jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete: 450 mm dia RCC pipes.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level: 1:3:6 (1 Cement : 3 coarse sand (zone-III) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources)

ATR INFRAPROJECTS PVT LTD