Development of drainage system at Surat International Airport. SH-Construction of part drainage system (Phase-I) from Apron Bay no. 21 towards Fire station and Operational gate no.2, with provision of sump at Surat International Airport, Surat.

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and for all lift , as directed by Engineer-incharge. a) All kinds of soil

Carriage of Materials by Mechanical Transport including loading, unloading and stacking Earth with lead upto 5 km for all lifts, complete as per directions of Engineer-in-charge. (a) Earth

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and forall lift.

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

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

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

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

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

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. a) Thermo- echanically 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 have discretion to either re-design the mix or bear the cost of extra cement. a) All works upto plinth level - Concrete of M25 grade with minimum cement content of 350 kg /cum

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 a) 600 mm dia RCC pipes.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Supplying and laying stone soling with stone boulders of size 150 mm to 225 mm in layers not exceeding 225 mm thick including hand packing with small stone chips and binding materials (gravel or moorum) including watering and compacting with road roller/ hand rammer as per direction of Engineer-in-charge. (Nothing extra to be paid for packing the voids and making surface levelled)

Providing and placing Precast U-shape RCC drain with lid cover including excavation,dressing,placing,joint filling & back filling in required slope & orientation, with all lifting/lowering, placing arrangement including tools and machineries. The precast drains will be fixed with mortar on all vertical & horizontal joints complete as per direction of Engineer- in-charge. a) RCC U-shape drain having wall thickness minimum varying from 85mm to 110mm and base thickness 110mm with lid cover of size of 900 mm x 900mm x 100mm for load carrying capacity of 6TON. (Note: Necessary design calculation shall be submitted by agency fulfilling the required criteria's as per relevant IS Codes.)

b) RCC U-shape drain having wall thickness minimum varying from 85mm to 110mm and base thickness 110mm with lid cover of size of 900 mm x 1200mm x 100mm for load carrying capacity of 6TON. (Note: Necessary design calculation shall be submitted by agency fulfilling the required criteria's as per relevant IS Codes.)

c ) RCC U-shape drain having wall thickness minimum varying from 85mm to 110mm and base thickness 110mm with lid cover of size of 900 mm x 1500mm x 100mm for load carrying capacity of 6TON. (Note: Necessary design calculation shall be submitted by agency fulfilling the required criteria's as per relevant IS Codes.)

Provision of Structural design services for preparation of detailed Structural drawings for under ground sump/ drain. The structural drawings shall include design analysis (software output or manually designed) for all RCC and Steel Structures members involved in the work including detailed working drawings (good for Construction), all duly vetted from NIT /IIT. The contractor will also provide working drawings for all activities like reinforcement, roofing details etc. all including reinforcement & other detailing etc. as required to execute the work, all complete as per directions of Engineer-in-charge.

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