Construction of Link Taxi Track for Flying Training Organizations

Amount

Excavation in all kinds of Soil with hydraulic excavator of 0.9 cum bucket capacity including cutting and loading in tippers, trimming bottom and side slopes transporting the excavated earth to the filling locations within Airport premises including all leads and lifts , breaking clods, levelling fine dressing in accordance with requirements of lines, grades and cross sections, etc complete as per direction of Engineer-in-charge.

Earth Work excavation in ordinary rock with hydraulic excavator of 0.9 cum bucket capacity including cutting and loading in tippers, trimming bottom and side slopes transporting the excavated earth to the filling locations within Airport premises including all leads and lifts , breaking clods, levelling fine dressing in accordance with requirements of lines, grades and cross sections, etc complete as per direction of Engineer-in-charge.

Excavation in hard rock (blasting prohibited) with rock breakers including breaking rock, loading in tippers , trimming bottom and side slopes transporting the excavated earth to the filling locations within Airport premises including all leads and lifts , breaking clods, levelling fine dressing in accordance with requirements of lines, grades and cross sections, etc complete as per direction of Engineer-in-charge.

Preparation and consolidation of sub grade with power road roller of 8 to 12 tonne capacity after excavating earth to an average of 22.5 cm depth, dressing to camber and consolidating with road roller including making good the undulations etc. and re-rolling the sub grade and disposal of surplus earth with lead upto 50 metres.

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 mix 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 sub-grade 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 as per mix design, 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 transparent (1st quality) polythene sheet (separation membrane) 200 microns thick on the base course with overlaps of not less than 50mm longitudinally and 75mm transversely complete as per directions and satisfaction of Engineer-in-charge.

Providing and laying Pavement Quality Concrete (PQC) produced in a batching plant having a characteristic flexural strength. i.e. minimum flexural strength of 4.1 Mpa at 28 days, using 350 kg of cement per cum, Fine aggregate, graded stone aggregate of 40mm nominal size in appropriate proportions as per specification and Job Mix Formula, laid in panels as per drawing/design as approved and directed by Engineer-in-Charge using manual method including making necessary provision for expansion joint, joint cutter etc complete as per direction of Engineer-in-Charge and particular specifications. The item for execution shall include the following operations: (a) Mechanically vibrated by using needle and surface vibrators, including steel form work with sturdy M.S. channels/section including curing as per specification. (b) Mechanically cutting dummy joints of size 3mm wide and 1/3rd thickness of slab which is subsequently widened to 10 mm for the top 25 mm depth and construction joints 10 mm wide X 25 mm deep as per specification. (c) Filling polysulphide sealant (pouring grade) in dummy, construction & expansion joints including providing close-cell Polyethylene foam back-up rod and painting side of joints with polysulphide primer etc. complete etc. complete as per specification. {Components of operation under (b) & (c) shall be paid separated under relevant items}

Providing and laying in position for expansion joint 25 mm thick pre-cut synthetic joint filler board approved make confirming to IS : 1838 ( part - 3 ) 2011, 45 mm from top (to be removed at the time of filling of polysulphide sealant), completed as per particular specifications and directions of Engineer-in-charge. Note: Mode of measurement shall be length of joint multiplied by depth of filler board including pre-cut portion - unit m2

Providing and laying in position polysulphide sealant of approved make conforming to BS-5212-1990 or IS: 11433-1995. In expansion / construction/dummy joints including rounding off edges, applying 2 coats of approved primer primer compatible with the brand of polysulphide 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. Complete as per direction of Engineer-In-Charge & particular specification. [Note : For purpose of payment, quantity (Length X Width X Depth) of Polysulphide sealant only will be, measured.] - For Expansion joints 25mm wide x 10mm deep over 30 mm dia closed-cell Polyethylene foam breaker rod, as per manufacturers specifications.

Providing and laying in position polysulphide sealant of approved make conforming to BS-5212-1990 or IS: 11433-1995. In expansion / construction/dummy joints including rounding off edges, applying 2 coats of approved primer primer compatible with the brand of polysulphide 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. Complete as per direction of Engineer-In-Charge & particular specification. [Note : For purpose of payment, quantity (Length X Width X Depth) of Polysulphide sealant only will be, measured.] - Construction Joints / dummy joints / contraction joints of size 10 mm wide and 50 mm deep over 12 mm dia closed-cell Polyethylene fome back-up rod

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 ail dirt, scales, oil, grease and other foreign materal etc. and lining out complete - New work (Two or more coats)

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 : 8 graded stone aggregate 40 mm nominal size)

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)

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 - 600 mm dia RCC pipes.

Providing and fixing G.I. chain link fabric fencing of required width in mesh size 25x25 mm made of G.I. wire of dia 3 mm including strengthening with 2 mm dia wire or nuts, bolts and washers as required complete as per the direction of Engineer-in-charge.

Providing and fixing concertina coil fencing 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 with existing angle iron ‘Y’ shaped placed 2.4m or 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 165 kg/ sq.mm with tape (0.52 mm thick) and weight 43.478 gm/ metre (cost of M.S. angle, C.C. blocks shall be paid separately)