Construction of 30000 Liter OHT Tank at Pongiyannan Nagar H/O Navapatti Village in Kolathur Union

CONSTRUCTION OF 30000 LITRE OHT @ Pongianna nagar H/O Navapatti Village panchayat in Kolathur Block

Earth work excavation & depositing on bank with an initial lead of 10 metre & initial lift of 2 metre in Hard shift clay, stiff block cotton, hard red earth shales, murrum, gravel, stoney earth, and earth mixed with small size boulders and hard gravelly soil (SS 20B) for foundation including shoring, strutting, baling out water providing danger light wherever necessary depositing the surplus earth on bank and other incedential charges etc., complete and as directed by TWAD board Officers - For Column Footing

Sand filling for foundation with clear river sand including cost of sand, watering ,ramming and consolidation etc complete as directed by TWAD Bord officers - For Column Footing

Plain Cement Concrete 1:4:8 (one cement, four sand and eight hard granite broken stone of 40mm size ISS gauge) for foundation and footing including mixing, placing, ramming ,finishing curing etc. complete in accordance with standard specification and as directed by the TWAD Board Officers. - For Column Footing

Cement Concrete 1:1-1/2:3 (One Cement, One and a half crushed stone M.Sand and Three hard broken stone jelly) using 20 mm gauge hard broken granite stone jelly for all RCC items of works excluding cost of reinforcement grill and fabricating charges centering and shuttering but including laying, vibrating with mechanical vibrators, finishing, curing, etc. and providing fixtures like fan clamps in the RCC floor / roof slabs wherever necessary and bearing surfaces of walls, beams etc. shall be finished smooth with Cement Mortar 1:3 (One Cement and Three M.Sand) and kraft paper laid over it without claiming extra, etc., complete complying with standard specification and as directed by the departmental officers

Below 1.5m from GL

0m to 1.50m below GL

0m to 4.50m above GL

4.50 m to 7.32 m above GL

7.32 m to 10.98 m above GL

10.98 m to 14.64 m above GL

14.64 m to 18.30 m above GL

Supply and erection of steel centering, shuttering for soffits and sides including necessary supports and strutting for all RCC works using MS sheets of suitable size of BG10 stiffened with MS angle of size 25 X 25 X 3 mm for boarding laid over I type MS Truss of size 25 X 25 X 3mm about 90cm c/c and supported by 40mm GI pipes (Medium) spaced at 75cm c/c etc complete and as directed by the TWAD Board Officers.

Plain Surface

Below GL

From GL to 3.30m

From 5.30m to 6.30m above GL

From 8.30m to 9.30m above GL

From 11.30m to 12.30m

Square Column:

Square Column Below GL and upto 3.30m above GL

3.31m to 4.30m ht

4.31m to 5.30m ht

5.31m to 6.30m ht

6.31m to 7.30m ht

7.31m to 8.30m ht

8.31m to 9.30m ht

9.31m to 10.30m ht

10.31m to 11.30m ht

11.31m to 12.30m ht

Curved Surface - upto 3.30m ht.Floor slab above platform 11.30m to 12.30m

Supplying, cutting, bending, tying, fabricating and placing in position of steel rods for all RCC works including cost of steel and binding wire etc.( The steel should conform to the relevant ISspecification and supplied with test certificate Fe. 415 grade as per IS specification No.1786/1985 and as amended from time to time) delivery at site of work including loading, freight, unloading, stacking, transit insurance charges, taxes etc. complete.and as directed by the TWAD Board officers.

Painting two coats with approved cement paint over one priming coat of white cement over cement plastered wall surface and ceiling including cleaning preparing the surface and curing etc., complete (using cement paint of colour as approved by the Departmental officer) and as directed by the TWAD Board officers.

Fabrication, supply, delivery and fixing of outside MS Ladder of 45cm clear wide made out of 50 mm x 50mm x 6mm MS angle for both sides and for steps at 30cm C/C welded jointed etc ., for I staging from GL to 1st level brace (weight 4.5kg/m) IInd and IIIrd staging upto floor slab and IVth staging from floor slab to roof top. Supply, delivery and fixing of 32 mm GI pipes medium for hand rails from I stage to IVth stage. RCC M30 Grade mix for Landing slab 5 nos. at Ground Level- 1No. and above Ground Level - 4Nos. Supply and fixing of 32mm GI pipe medium for hand rails for the Landing slab. Supplying and fixing of MS Base plate of 100mm X 100mm X 6mm thick for fixing Anchore fastener bolt for fixing of hand rails at Landing slab and MS Ladder providing locking arrangements with two coats of approved enamel paint over one coat of red oxide paint as per approved Type Design and as directed by TWAD board officers.

Providing and fixing of RCC inner access ladder in RCC 1:11/2 :3 (one cement,one and half sand and three aggregate) using 20mm HBG stone for OHT including cost of reinforcement, placing grill in position, centring,shuttering charges, mixing concrete,curing etc. to required height and clear width of 45 cm consisting of 2 nos. of vertical post of 10 cm x 15 cm and step slab of 25mm x 25mm etc.complete and as directed by TWAD Board Officers.

Providing 110mm PVC vent cowl arrangements mosquito proof nylon net and as directed by TWAD Board officers

Supply and fixing of cut stone of size 0.30m x 0.30m x 0.15m in CM 1;3(one cement and three sand) below inlet pipe for Service Reservoir as directed by TWAD Board Officers.

Providing manhole cover of size 0.60 x 0.60M in RCC 1:1.5:3 with suitable reinforcement and 50x50x6mm MS angle fixed along edges and as directed by TWAD Board officers

Pipe connection arrangements for inlet,outlet,scour and overflow etc. including cost of pipes,specials,valve,labour charges for lifting, aligning, cutting, threading ,fixing and painting of GI pipes with two coats of approved quality enamal paint etc. complete as detailed below.

50mm GI pipes for scour pipe

50mm GI Coupling

50mm GI Elbow

50mm GM gate valve

Supply and delivery of 63mm OD6 KSC PVC Pipe as per ISI Marked Standarad specification.

Earth work excavation and deposting on bank with an initial lead of 10m & lift of 2m for pipe laying works with standard trench width and depth etc., complete

Lowering PVC pipes and specials to trench and laying to proper grade and alignment, jointing with PVC couplers with cement paste.

Refilling the excavated earth as per the standard specifications (63mm)

Provision for scheme name board

Provision for LWF 1 % (Please Type 19710)

Provision for Photographic charges

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