RRR- Phase IX -Aduthakudi Tank

Amount

Clearing Juliflora jungle with uprooting and disposing off the same complete complying with standard specification and as directed by the Engineer in charge of work.

Dismantling clearing away and carefully stacking materials useful for reuse for any thickness of wall in Brick or stone masonry in cement mortar walls under 3m high etc., complete complying with standard specification and as directed by the departmental officers.

Dismantling, clearing away and carefully stacking materials useful for reuse for any thickness of Plain cement concrete complete complying with standard specification and as directed by the Engineer in charge of work.

Earth work excavating and depositing on bank with initial lead of 10m and initial lift of 2m in hard stiffy clay, stiff black cotton, hard red earth shales murrams, gravel, stoney earth and earth mixed with small size boulders etc., complete complying with standard specification and as directed by the departmental officers.(SS.20B)

Earthwork excavation for foundation in Hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size of boulders hard gravelly soil inclusive of shoring to full depth strutting and bailing out water wherever necessary and refilling the sides of foundation with excavated soil other than sand in layers of not more than 15 cm thick, well rammed, consolidated and depositing the surplus earth in places as shown by the departmental officers with an initial lead of 10 (Ten) metres and initial lift of 2 (Two) metres and clearing, levelling the site etc., complete complying with standard specification and as directed by the departmental officers.

Earthwork in all soils except hard rock requiring blasting and conveying with a lead of 0 to 100 M by deploying earth moving machineries and tippers for formation of bund in layers of suitable thickness, depending upon type of compaction equipment deployed , and not exceeding 23 cm thickness, benching of slopes prior to placement of earth fill, including extra earth filling , breaking clods, watering to OMC and compaction of each layer to 95% of Proctor density through deployment of appropriate compaction equipment 8-10 tonne power roller ; vibratory power roller ; short width (+/-)0.90m width drum) power roller or vibratory power roller ensuring compaction of designed bund section and also ensuring compaction of earth fill and side slopes through the deployment of hydraulic excavators with steel plate fixtures attached to their booms/ heavy power rollers capable of climbing 2.00 (Horizontal) : 1.00 (Vertical) slope including side slopes as directed by the engineer in charge of works and as per technical specifications.

Earthwork deploying earth moving machineries for desilting channel and forming bund on either side and depositing the earth on banks including jungle cleareance etc., complete.Having width of 3M - 10M.

Collection and Supply of Sand gravel mix 1:1 (one sand and one gravel) ratio for basement / filter zone including stacking, mixing and spreading the sand gravel mix in layers of not exceeding in 150 mm thickness over properly prepared surface, watering and consolidating the same with approved type of compaction equipment etc complete complying with the standard specification and as directed by the Engineer in charge of the work.

Supplying and filling with clean river sand in foundation and basement with filling sand in layers of not more than 15cm, thick well rammed watered and Consolidated etc., complete complying with standard specification and as directed by the departmental officers.

Plain cement concrete of grade M15 for Plain cement concrete using hard broken stone aggregate of maximum nominal size of 40mm to IS specified grading mixing by mixer machine including dewatering the placement site,laying the concrete in layers and in bays vibrating,compacting and finishing the surface with all leads and lifts watring curing to attain the profile and strength as specified in the drawing for various depth and height below and above ground level etc complete as directed by the Engineer in charge of work complying with the standard specification .(Without Vibration)

Cement concrete M15 grade design Mix with well graded aggregates and the nominal maximum size of coarse aggregate of size 20 mm weigh batching the ingredients and mixing in approved mixers/batching plant (to produce concrete of the specified characteristic strength of 15N/mm2 at 28days) including dewatering the placement site by bailing/pumping and by diverting wherever necessary laying the concrete in layers and in bays with all leads and lifts compacting and finishing the surface water curing so as to attain the profile and strength specified in the approved drawing and specification complete complying with standard specification and as directed by the Engineer in charge of the work. (with Vibration)

Cement concrete of grade M15 design Mix with well graded aggregates and the nominal maximum size of coarse aggregate of graded mix using 40% quantity of 20mm size hard broken granite stone jelly and 60% quantity of 40mm and downgrade to I.S. specified grading mixing in mixer machine (to produce concrete of the specified characteristic strength of 15N/mm2 at 28 days) including dewatering the placement site laying compacting and vibrating finishing the surface with all leads and lifts watering, curing ,etc, complete and as directed by the Engineer complying with standard specification and as directed by the Engineer in charge of the work. (with Vibration)

Plain cement concrete of grade M20 using hard broken stone aggregate of maximum nominal size of 20mm to IS specified grading mixing by mixer machine including dewatering the placement site,laying the concrete in layers and in bays vibrating,compacting and finishing the surface with all leads and lifts watering curing to attain the profile and strength as specified in the drawing for various depth and height below and above ground level etc complete as directed by the Engineer in charge of work complying with the standard specification (Without vibration)

Providing Steel Centering for RCC Slabs, beams or plain surfaces including strutting upto 3.29 m high using MS sheets, 10 guage thick of size 90cm x 60cm, Stiffened with Ms angles of size 25mm x 25mm x 3mm laid over silver oak joists of size 10 cm x 6.5 cm spaced at 90 cm c/c and supported by casurina props of 10 cm to 13cm dia spaced at 75 cm c/c and removing the centering and shuttering after specified period without damaging the concrete laid, complying with standard specification and as directed (The retrieved materials should be taken back by the contractor).The payment for centring shall be given after the concrete is laid (For Retaining walls, Sluices and Recharge shafts)

Centering with out Strutting

Centering with Strutting

Supplying and erecting water tight steel centering for sides and soffits including necessary supports with all cross bracing using Mild steel BG10gauge sheets of size 90x60cm stiffened with welded mild steel angles of size 25x25x3mm laid over silver oak(country wood)joists of size 75x5cm spaced at about 45cm c/c and supported by casurina props of 10cm to 13cm dia spaced at 75cm c/c for vertical plain concrete etc, complying with standard specification and as directed by the Departmental officers ( The retrieved materials should be taken back by the contractor).The payment for centering shall be given after the concrete is laid for field bothies and flow measuring device.

Supplying and fixing cut stone roughly dressed to size all faces and set in cement mortar 1:3 (One cement and three sand) including all incidental charges such as finishing and curing etc., complete complying with standard specification and as directed by the departmental officers.

Supplying, fabricating & placing in position of ribbed tor steel grills for Reinforcement of RCC works including cost of steel and binding wire and labour charges for decoiling, cutting, bending and tying the grills complete complying with standard specification and as directed by the Engineer in charge of the work.

Supplying,hoisting,laying,jointing and fixing in position of RCC Hume pipe of NP3 class of 900mm dia with suitable collars including labour and jointing materials etc., complete complying with standard specification and as directed by the departmental officers

Refilling with excavated earth (other than sand) with all leads and lifts for filling the open cut wherever necessary in layers including breaking clods watering and compaction using Power Roller to atleast 95% of Proctor Density at OMC in each layer and sectioning etc as directed by the Engineer in charge of work.

Fabricating and supply of country wood plug size of 40 x 40cm and 45 cm to 60 cm height. The plug rod with 20 mm dia mild steel rod size of 3.0 m to 4.50 m height, The plug top side, middle, centre and bottom side covered iron strap - 3 nos. Plate thickness size 3 mm steel plate. The plug hole size 10 cm to 25 cm dia. etc., including cost of rod , wrought and put up and fixing in correct alignment in position. The plug painted with two coats of Varnish, the rod painted with two coats of best anti-corrosive paint and conveyance to the work site including loading, unloading. The rates should be inclusive of all taxes and duties and including fixing charges etc. complete complying specification and as directed by the Engineer.

Supplying demarcation R.C.C. pre cast post of size 0.15 x 0.15 x 1.20 M in Cement concrete M20 grade with well graded aggregates and the nominal maximum size of coarse aggregate of size 20 mm and fixing the post 45 cm depth below ground level, the post includes using 4 numbers of 8 mm RTS main rod to a length of 1.35 M, using 6 mm MS 9 numbers as strrups with steel centering and painting the post with enamel paint to a height of 0.75 M alround the post etc. complete and conveying the post to the site of demarcation boundary such as tank bund and foreshore including earth work excavation for foundation in HSC, and the post embedded by using Cement concrete M15 grade coarse aggregate of 20 mm over levelling course of M10 grade -40mm, as per the direction of the Engineers and complying with standard specification.

Supplying and fixing 90 degree "V" notch made up of Mild Steel plate of size 60 x 100cm, 5.0mm thick for carrying capacity upto 4 cusec confirming to the specification communicated by the Chief Engineer, WRO,PWD, DR&CS, Chennai in Circular No. 3/CE(DR&CS) /SE(D)/AEE VII/2009/ Dated, 27-10-2009. The plate shall be plane, rigid and perpendicular to the walls and flow of the approach channel. The upstream face shall be smooth. The vertical bisector of the notch shall be equi- distance from the two walls of the channel. The crest of the notch shall be horizontal, plate which shall from a sharp edge at its intersection with the upstream face of plate. The width of the crest, measured perpendicular to the face of the plate .The width of the crest, measured perpendicular to the face of the plate between 1mm and 2mm, filed to a angle of 45 degree with horizontal (as per the sketch enclosed with above mentioned circular) The side surface shall be vertical, plane surfaces which shall make sharp edge at this intersection with the upstream face of the weir plate. Fixing and installation of the “V” notch has to be done in conformity to the guidelines furnished in the above circular of Chief Engineer, WRO,PWD, DR&CS, Chennai and as directed by the departmental officers. Fixing “V” notch and other arrangement shall be carried out as per the drawing enclosed. The rate including cost and conveyance of all materials etc, complying with standard specification.

Drilling of Borewells anywhere in Tamilnadu including transportation from one place to another with in Tamilnadu in alluvial soil sedimentary strata of clay and sand stone shale pebbles boulders etc. By first taking a pilot bore of 140 mm/150mm dia and then enlarging to required dia direct or reverse rotary mud circulation method using rotary rigs, fuel, labour and drilling bentonite and water required for drilling at site including construction of mud pit. upto 60 m depth ending below ground level.

Reaming 140/150 mm dia pilot bore to 300 mm dia bore as directed by the departmental officer.

Supplying and inserting PVC casing pipe assembly (with slots and without slots including labour charges) in the drilled holes including jointing the pipes with PVC couplers with PVC adhesive etc., complete and supplying and packing annular space with pebbles of size and quality as approved by the Departmental Officers.

without slot

with slot

Supply of 160mm dia end cap for bore hole as directed by the departmental officers

Supply and filling of 40 mm HBS Jelly in layers complying with standard specifications and as directed by the departmental officers.

Supply and filling of 20 mm HBS Jelly in layers complying with standard specifications and as directed by the departmental officers.

Supplying and fixing of RCC Hume pipe of NP3 class of 900mm dia, vertically in position over the bore well pipe with a length of 2.00m below the ground level to make entry of water into filter media placed all around and recharge bore well pipe including all charges for fixing it at work site etc., complete complying with standard specification and as directed by the departmental officers.specification and as directed by the departmental officers

Charges for Geophysical resistivity survey at shaft site and mazdoor employed for Geophysical investigation works.

G SIVAKUMAR