Rerouting of drain from concentration section to Hot well at Phosphoric acid plant in FACT Cochin Division, Ambalamedu, Kochi

Amount

Demolishing R.C.C. work manually / by mechanical means including stacking of reinforcement bars and disposal of unserviceable material with in 50m lead as per direction of Engineer in-charge.

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains, in all kinds of soil, including dressing of sides and ramming of bottoms, lift up to 1.5m, including getting out the excavated soil and disposal of surplus excavated soil as directed by the Engineer-in -charge, with in a lead of 50m. The rates shall include bailing out water, and keeping the sides from collapsing using necessary timbering, planking, and shoring.

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 lift up to 1.5 m.

Providing and laying plain cement concrete work in 1:4:8 mix (1 cement: 4 coarse river sand/manufactured sand: 8 40mm nominal size graded hard granite broken stones) including all charges for mixing concrete, laying, consolidating, curing, cost for bailing out of water, oil, liquid mud etc. from all sources in excavated pits, trenches, etc. complete at all levels as per standard specifications but excluding the cost of shuttering, and as directed by the Engineer in-charge for foundation / levelling course etc.

Supplying and filling in basement with clean river sand / M-sand including watering, ramming, consolidating and dressing complete.

Supplying, fabricating, conveying, and fixing reinforcement to RCC works at all levels with high strength deformed bars Fe 500D/ 550D grade Thermo Mechanically Treated (TMT) bars conforming to IS 1786 including all charges for uncoiling and straightening rods, cutting rods, bending cold, placing in position and supplying & tying with black annealed tying wire of 16 gauge, etc. complete.

Providing form work to cement concrete and RCC works with necessary plywood / steel sheet, steel joists, runners, struts, posts etc with adjustable spans and telescopic posts, wooden planks etc. including removal after completion /curing at all levels for foundation footings, bases of columns and walls and for mass concrete with straight sides.

Reinforced cement concrete 1:1.5:3 (1 cement : 1.5 coarse sand(zone-III) : 3 graded stone aggregate 20 mm nominal size) work at all levels, excluding cost of centering, shuttering, finishing and reinforcement & including admixtures in recommended proportions as per IS: 9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability as per direction of Engineer in-charge-For yard/cable trench.

Reinforced cement concrete work of M25 grade for precast cover slab using Portland pozzolana cement containing more than 25% of fly ash, iver sand / manufactured sand conforming to IS 383 and 20mm nominal size graded hard granite broken stones including all charges for designing the mix, weigh batching, including installation of batching plant at the designated location in the site premises or arranging RMC, mixing concrete, cost of adding concrete admixtures as required, transporting, formwork, laying, vibrating, consolidating, curing with minimal use of potable water subject to provision of IS 456, handling, transporting, loading, unloading, keeping and fixing in position, at all levels etc., complete but excluding cost of providing reinforcements. (Exposed surfaces of pre-cast elements shall have good finish with no blemish or mark on the finished surfaces) NOTE- (1) Minimum Cement content shall be @ 330 kg/cum. Excess/ less cement used as per design mix is payable/recoverable separately. (2) Fly ash conforming to grade I of IS 3812(Part-1) only be used as part replacement of OPC as per IS: 456. Uniform blending with cement to be ensured in accordance with clauses 5.2 and 5.2.1 of IS:456 - in the items of BMC and RMC -for cover slabs on cable trench.

Acid proof lining after cleaning the cement finished surface well with water and allowing to dry, brushing and removing all dust, apply two coats of approved quality bitumen based primer conforming to IS. 1580 as per manufacture's specification, applying 12 mm thick asphalt membrane with hot melt asphalt free from filler conforming to IS. 1580, then laying acid resistant tiles of class II quality conforming to IS. 4860 over a bed of 6 mm thick potassium based silicate cement mortar conforming to IS. 4832 - part. I & 4441 and joints 5 mm thick, raking the joints to full depth from the top surface, removing the raked-out mortar and filling the entire depth of joints with Furan base resin cement mortar conforming to IS. 4832 - part. II including acid washing curing etc. complete as per relevant IS. 4443 specifications at all heights. - 230X112X38 mm or nearest size tile.

Erection & Installation of Precast Concrete elements in correct & final position with proper line level and plumb at site making all arrangements (i.e cranes, push-pull jacks & all another T & P for lifting placing & alignment of elements, within erection tolerance as per IS 15916 as per approved shop drawings and all complete as per the direction of Engineer-in-Charge but excluding the cost of sim pads, non shrink grout and steel works i.e hangers. All work up to floor five level- for solid concrete drain elements.

Add for using extra cement in the items of design mix over and above the specified cement content therein.

Disposal of moorum/ building rubbish/ malba/ similar unserviceable, dismantled or waste material by mechanical transport including loading, transporting, unloading to approved dumping ground for lead up to 10 km for all lifts, within the premises of FACT CD, complete as per directions of Engineer in-Charge.

SURESH M P (BID ID -3288725)

M.N.B.NAIR ENGG CONTRACTORS (BID ID -3283076)