Protection work just downstream of solid RCC apron with block protection and loose stone apron methods and providing RCC retaining wall along the banks of river Khandepar to guide the river flow axially through Opa barrage at Opa of Ponda taluka.

Amount

Earth work in excavation by mechanical / manual means in all types of strata comprising any of the materials such as soil, silt, sand, clay gravel, moorums of all verietes shingles, pebble, all type of conglomerates, laterite rock, soft rock, disintegrated rock, weathered rock,fissured shattered, decomposed rock and all such other materials either in full or in parts as the case may be adopting any approved method or methods as may be convenient or permitted inclusive of chiselling, wedging etc, but blasting prohibited, in all conditions such as dry moist, saturated, submerged, foul conditions etc. including pumping or bailing out water, dewatering including setting out construction of shoring and bracing removal stumps and other deleterious matters, dressing of side and bottoms and disposal of excavated soil / rock with all lifts and backfilling wherever required as per specification and drawing and as directed by the Engineer in charge etc.all complete.

Construction of embankment with approved materials deposited at site from roadway cutting and excavatiion from drain and foundation of other structures graded and compacted to meet requirement of Table 300-2. The spreading of earth / soil in layers shall not exceed 200 mm compacted thickness over the entire downstream width by mechanical means, to be finished by motor grader and each layer compacted thoroughly with minimum 8-10 tonne vibratory roller, etc. as per direction of engineer in charge complete.

Earthwork in surface excavation not exceeding 30 cm depth( but exceeding 1.5 m width as well as 10 sq.m on plan) including disposal of excavated earth beyond work site for all leads lift disposed earth to be leveled and neatly dressed in: a) Ordinary soil

Providing and laying filter media with Granular materials crushed stone Aggregates satisfying the requirement as Per Clause 2504.2.2 of MOSRT and H Specification to a thickness of 500 mm laid horizontally in layers of 250 mm thick and compacted to firm condition etc. including laying of Geotextile filter fabric of suitable type specifically to be used in association with soil in between the layer formed complete as direction by Engineer -incharge.

Providing and laying of apron with cement concrete blocks of size 1.50 x 1.50 x 0.90 m cast in- situ and made with nominal mix of M- 15 grade cement concrete with a minimum cement content of 250 kg/cum as per IRC: 21-2000, with 0.075 m thick gap filled with gravels laid over prepared filter media of 0.50 m thickness, complete as per drawing and Technical specifications. ( Filter media will be paid separately).

Flexible Apron : Construction of flexible apron 1 m thick comprising of loose stone boulders weighing not less than 40 kg beyond curtain wall. (Granitic/Basaltic stone boulders of size 50 cm and above )

Curtain wall complete as per drawing and Technical specification B) Cement concrete grade M15

Providing and laying Filter material underneath pitching in slopes complete as per drawing and Technical specification.

Dry stone pitching 22.5 cms thick using stone available from excavation incl.Preparing the surface etc. complete.

Supplying of Timber piles 300 mm mean diameter cut to a 6.00 m length as required ( not exceeding 9 meters ) and driving down vertically to approved lines and level through various strata including arranging all the appliances necessary for pile. Heading and pointing whole bally piles including only rings, providing and fixing pile shoes, cutting of heads after driving and taking out rings removing cut off portions to departmental store as specified as per the direction of Engineer in charge, complete.

Treatment of timber piles in a hot mixture of tar and creosote oil in the proportion of 20 litres of coal tar to 25 litres of creosote oil for a period of 4 minutes dipping including the cost of all materials fuel and labour complete.

Rubble packing with hard laterite stone under floors including watering ramming and consolidating etc. in pipeline trenches and other foundations complete.

Providing & laying cement concrete 1:2:4 (1 cement: 2 coarse sand: 4 graded granitic or basaltic stone aggrt. 20 mm. nominal size) excluding cost of centering, shuttering and finishing in: a) All works upto plinth level

Centering & shuttering including Strutting, Propping & removal of forms for : i) Foundations, Footings, Bases for columns

Centering & shuttering including Strutting, Propping & removal of forms for : ii) Vertical surfaces such as retaining walls, return walls, Partitions, walls (any thickness ) including attached Pilasters, Buttresses, Plinth and string courses, Fillets and the like

Providing TMT steel reinforcement bars of (SAIL, TATA. VIZAG, JSW Steel Ltd.) ) (Confirming to IS 1786 of 1986) for RCC work (conforming to I.S. 1786 of 1986) including bending, binding & placing in position in all the floors along with the factory made precast concrete cover blocks of specified sizes whose compressive strength is not less than that of surrounding concrete in the structural member

Providing and laying in position ready mixed concrete (RMC) with usage of Ordinary Portland Cement manufactured in fully automatic batching plant and transported to site of work in transit mixer for all leads having continuous agitated mixer, manufactured as per mix design of specified grade for reinforced cement concrete work including pumping of R.M.C; from the transit mixer to the site of laying, excluding the cost of centering, shuttering, finishing and reinforcement including the cost of admixtures in recommended porportions as per IS : 9103 to accelerate/retard setting of concrete, improve workability without imparing strength and durability as per the directions of the engineer-in-charge. All works upto floor V level v) M-30 grade of concrete

Filter joint : Providing and fixing 20 mm thick compressible fibre board in expansion joint complete as per drawing and Technical Specification.

Providing and fixing weepholes with rigid PVC make laid in position with a required slope and level while layingpipes of approved the concrete of retaining wall, wing wall and earth retainig structure complete as directed by the Engineer in charge. A) 110 mm dia.

Sub Surface Drains with Perforated Pipe (Construction of subsurface drain with perforated pipe of 100 mm internal diameter of metal/ asbestos cement/ cement concrete/PVC, closely jointed, perforations ranging from 3 mm to 6 mm depending upon size of material surrounding the pipe, with 150 mm bedding below the pipe and 300 mm cushion above the pipe, cross section of excavation 450 x 550 mm. Excavated material to be utilised in roadway at site)

Refilling the pipeline/ foundation trenches plinth sides, foundation etc. with available excavated earth in layers not exceeding 20 cm depth consolidating each layer ramming and watering lead upto 50 M and all lifts and disposal of surplus earth as directed by Engineer in charge.

Shri Sidharth R. Xette Bandekar (BID ID -45316)

Paresh G. Kamat & Associates (BID ID -45066)

ASHKO BUILDERS (BID ID -45405)