Construction of 30000 Lit Capacity OHT Tank (12m Staging) at Nallagoundampalayam H/O Anangoor in Tiruchengode Block at Namakkal District under Layout Fund - 2025 - 2026

Earthwork excavation and depositing on bank with an initial lead of 10m and lift of 2m in the following classification of soils as directed by TWAD Board officers. Hard stiff clay, block cotton, hard red earth shales, murram, ordinary gravel, stoney earth and earth mixed with small size boulders for foundation SS 20B

First Depth of 2m

Second Depth of 1m

Supplying and Filling foundation and basement with filling sand in layers not more than 15cm . Thick well ramed, watered and compacted Complete complying with Standard specification.

Cement concrete 1:4:8 (one cement four sand and eight aggregates) using 40mm HBGS for levelling course for foundation including the cost of mixing concrete, ramming, curing etc., complete as directed by TWAD Board officers. 1.5-4.5m below GL

Cement concrete 1:2:4 using 20mm ISS metal including all charges

RCC in M30 GRADE using graded aggregtes of HBGs excluding cost of reinforcement, centering, shuttering strutting, but including cost of mixing concrete, placing, vibrating with mechanical vibrator, finishing, curing etc., complete as directed by TWAD Board officers.

For items 1.5m to 4.5m below GL

For items 0 to 1.50m below GL

For items 0m to 4.5m above GL

For items 4.51m to 7.32 m above

For items above 7.32 m & up to 10.98 m

For items 10.98m to 14.64 m above

For items 14.64m to 18.30 m above

Supplying and erecting steel centering for sides and soffits I including necessary supports' and shuttering to the required height for RCC items using MS sheets of suitable size of BG.10 stiffeneq with welded MS angles of size 25mm x 25mm x3mm of boarding, laid over silver oak joints of size 10cm x 6.5cm spaceqat 90cm centre to centre and supported by 40mm dia GI pipes spaced at 75cm centre to centre complying with standard specifications etc., complete and as directed by TWAD Board officers.

Platform Allround

PLANE SURFACES

Below G.L

Curved Surface

Square column

Below G.L.

Ground level to 3.30m

Painting two coats with approved cement paint over one coat of priming coat over cement plastered exposed surface of the Reservoir including cleaning, preparing the surface and curing etc., complete and as directed by TWAD Board officers

Supplying, fabricating and placing in position of HSD steel rods for Reinforcement including the cost of steel and binding wire etc., complete and as directed by 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 5nos. 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.

Supply,delivery and fixing of pipes and specials for OHT connections

65mm dia GI Pipe

65mm dia GI Union

65mm dia GI Elbow

65mm Ø GM Gate valve

Refilling the foundation with excavated earth including consolidation as directed by the TWAD Board officers.

Supply and delivery of following pipe including all labour charges etc

63mm PVC Pipe

Earth work excavation for following pipe line including all charges etc

63mm PVC Pipe

Laying and Jointing of following pipe line including all charges etc

63mm PVC Pipe

Refilling the Trench after laying of following pipe line including all charges etc

63mm PVC Pipe

GST Amount for providing Service to Government Contract Works for the above RENEWAL Works. { GST Amount is the Total GST Amount for overall quoted amount above this row in column "BB" for all works in this package} (Refer Clause 13.2 & 13.3 of Section 2 of Instruction to Bidders (ITB) of SBD)

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