Water Resources Department Tender

Earth work excavation and depositing on the bank with a initial lead of 10m & initial lift of 2m in Hard stiff clay, stiff black cotton, hard red shales, murram, gravel, stoney, earth and earth mixed with small size of boulders hard gravelley siol complying with standard specification and as directed by the departmental officers.

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 (+/- 0.90 m 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 clearance etc. complete. (Having width upto 3 m)

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 including stacking for pre-measurement etc., complete complying with the standard specification and as directed by the Engineer in charge of the work.

Supplying and filling with M. sand in layers of not more than 15 cm thick well rammed watered and compacted etc. complete complying with standard specifications.

Providing and placing in position of Plain Cement Concrete M15 using hard broken granite coarse aggregate of nominal maximum size of 40 mm I.S. Specification grading and mixing the ingredients in by using mixer machine including dewatering of the placement site by bailing / pumping and dewatering wherever necessary laying the concrete in layers as directed and in bays compacting and watering, curing, finishing the surface with all leads and lifts so as to attain the profile and strength as specified in the approved drawing and specification for various depth and height below and above ground level etc., complete complying with standard specification and as directed by the departmental officers.

Providing and placing in position of Plain Cement Concrete M15 using hard broken granite coarse aggregate of nominal maximum size of 20 mm to I.S. Specification grading (to achieve the specified characteristic strength of 15 N/mm2 at 28 days) and mixing the ingredients in by using mixer machine including dewatering of the placement site by bailing / pumping and dewatering wherever necessary laying the concrete in layers as directed and in bays compacting, watering, curing, finishing the surface with all leads and lifts so as to attain the profile and strength as specified in the approved drawing and specification for various depth and height below and above ground level etc., complete complying with standard specification and as directed by the departmental officers.

Providing and placing in position of Plain Cement Concrete of M15 graded mix using hard broken granite coarse aggregate 60% of nominal maximum size of 40 mm and 40% of nominal maximum size of 20 mm to I.S. Specification grading (to achieve the specified characteristic strength of 15 N/mm2 at 28 days) and mixing the ingredients by using mixer machine including dewatering of the placement site by bailing / pumping and dewatering wherever necessary, laying in concrete in layers as directed and in bays compacting, vibrating, watering, curing, finishing the surface with all leads and lifts so as to attain the profile and strength as specified in the approved drawings and specification for various depth and height below and above ground level etc., complete complying with standard specification and as directed by the departmental officers.

Providing and placing in position of Plain Cement Concrete of M20 grade using hard broken granite coarse aggregate with the nominal maximum size of 20 mm weigh batchng the ingredients and mixing to approved mixers (to produce concrete of the specified characteristic strength of 20 N/mm2 at 28 days) including dewatering the placement site by bailing / pumping wherever necessary, laying the concrete in layers of not exceeding 15 cm thick and in bays, compacting, watering, curing, finishing the surface with all leads and lifts so as to attain the profile and strength as specified in the approved drawing and specification for various depth and height below and above ground level etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 3.29 m height for Plane surfaces as detailed below in all floors with all cross bracings using mild steel sheets of size 90 x 60 cm and 10 BG stiffened with welded mild steel angle, of size 25 mm x 25 mm x 3 mm for boarding laid over silver oak joist of size 10cm x 6.5 cm spaced at about 90 cm centre to centre and supported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc., complete complying with standard specification and as directed by the departmental officers (payment for centering shall be given after the concrete has been laid).

Centering with strutting

Centering without strutting

Supplying and erecting water tight steel centering for sides and soffits including necessary supports with all cross bracings using Mild Steel BG 10 gauge sheets of size 90 x 60 cm stiffened with welded mild steel angles of size 25 x 25 x 3 mm laid over silver oak (country wood) joists of size 75 x 5 cm spaced at about 45 cm c/c and supported by casurina props of 10 cm to 13 cm dia spaced at 75 cm c/c for vertical plain concrete etc., complying with standard specification and as directed by the departmental officers (The retrived 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. Steel and binding wire will be at the contractor's own cost.

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 40 cm 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 in Cement concrete M20 grade with well graded aggregates and the nominal maximum size of coarse aggregate of size 20 mm of size 0.15 x 0.15 x 1.2 m and fixing the post 45 cm depth below ground level, the post includes 4 numbers of 8 mm RTS main rod to a length of 1.325 m, using 6 mm MS 9 numbers as stirrups 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 M10 grade with well graded aggregates and the nominal maximum size of coarse aggregate of 40 mm for a height of 55 cm etc, complete as directed by the Engineer in charge of works and as per the technical specification.

Drilling of borewell anywhere in Tamilnadu including transportation from one place to another place within Tamilnadu in alluvial soil or sedimentary strata of clay and sand or sand, stone, shale, pebbles, boulders etc., by first taking a pilot bore of 140 mm / 150 mm dia and then enlarging to required dia by direct or reverse rotary mud circulation method using rotary rig, fuel, labour, drilling, bentonite mud and water required for drilling at the site shown by the departmental officers including construction of mud pit (only Calyx drills are to be used)

Drilling 140 / 150 mm dia Pilot Bore upto 60 m depth ending below ground level

Reaming from 140/150 mm dia pilot bore to 300 mm dia bore upto 60 m Depth ending from ground level

Supplying the PVC casing pipes as per IS 12818 of 2010 for bore hole as directed by the departmental officers. The rates are basic rates inclusive of transportation charges to site anywhere in Tamilnadu.

150 mm dia PVC-CS (Casing Shallow depth upto 80 m)

150 mm dia PVC-RS (Ribbed Screen Pipe)

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

Supplying and filling with the 40 mm H.B.G.S. jelly cost and conveyance materials etc., complete complying with the standard specification and as directed by the Engineer in charge of the works.

Supplying and filling with the 20 mm H.B.G.S. jelly cost and conveyance materials etc., complete complying with the standard specification and as directed by the Engineer in charge of the works.

Supplying, Laying, Jointing and fixing in position of R.C.C. Hume pipes of NP 3 class of 900 mm dia with suitable collars including labour charges and jointing materials etc., complete complying with standard specification and as directed by the departmental officers.

Labour Charges for inserting 150 mm dia PVC Casing pipes assembly (with slots or without slots) in the drilled hole including jointing the pipes with PVC Couplers with Cement paste etc., complete, supply and packing the annular space with pebbles of size and quality as directed by the departmental officers

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

G.S.T 18% in figure