Construction of 30000 Lit OHT (7.50 Stage) at Andipatty H/O Keerambur. in Namakkal Block of Namakkal District under Pooled Assigned Revenue 2025-26 NKL-1

Construction of 30000 Lit OHT (7.50 Stage) at Andipatty H/O Keerambur

Earth work Excavation for Foundation in all soils and Sub Soil as per SS20B fo foundation etc complete.SS 20B

First depth of 2m

Second depth of 2m

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.

Providing granolithic floor finish of the following thickness with plain cement concrete 1:2:4 (One Cement, Two crushed stone M.Sand and Four aggregate) using 10 to 12mm gauge hard broken stone jelly including laying, finishing and the top rubbed smooth with power trawl, thread lining, curing etc. complete complying with standard specification and as directed by the departmental officers. (The rate is inclusive of necessary planking for panelling wherever necessary and as directed by the departmental officers)

Brick work in cement mortar 1:5 mix using Fly Ash Bricks and conveyance of all materials to site and all labour charges etc complete -10 cum

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 from GL

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 casuarina props of 10cm to 13cm dia spaced at 75cm centre to centre complying with standard specifications etc., complete and as directed by TWAD Board officers.

PLANE SURFACES

o-3.3m Below & above G.l

Curved Surface

Square column

Below G.L. &above G.L 0-3.30 (3.30+1.50)

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 wide made out Fabrication, supply, delivery and fixing of outside MS ladder of 45cm wide made out of 50x50x6mm MS angle for sides and steps in 16mm MS plain rods fixed at 30cm centre to centre welded, jointed etc., providing with suitable side supports, clamps, and locking arrangements provided with one coat of red oxide paint for providing access to roof top of 60,000 lit. capacity OHT of suitable inclined length, including bottom anchorage and transportation and as directed by TWAD Board officers.

Providing and fixing of RCC inner access ladder in M30 (one cement, one and half sand and three aggregates) using 20mm HBG stone for OHT including cost of reinforcement, placing grill in position, centering shuttering charges, mixing concrete curing etc., to required height and clear width of 4Scm consisting of two Nos. of ve~ical post of 10cm x lScm and step slab of 2Smm x 25mm etc., complete and as directed by TWAD Board officers. Providing PVC ventilating arrangements mosquito proof nylon net with 1l0mm PVC pipes and cowl and as directed by TWAD Board officers. Providing cut stone slab in CM 1:3 and as directed by TWAD Board officers.

Providing manhole cover of size 1x1 0.60 X 0.60M in CI with suitable reinforcement and 5O x 5O x 6mm MS angle fixed along edges and as directed by TWAD Board officers.

Providing OHT pipe connection including cost of pipes and labour charges (vide separate estimate)

50 MM GI PIPE (M) outlet (10.5m)

50 MM GI PIPE (M) inlet (13.5m), over flow(13.50m)

50 MM GI PIPE (M) scour (7.00m)

50 MM GM GATE VALVE

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

Supply and Delivery of Following materials including cost of all Etc Completed

63mm dia Pvs pipe 4ksc

63mm dia Pvs pipe 6ksc

Earthwork execavation in all soil to a linear measurement width of 0.65 m and depth of 1.05m

Laying and Jointing of PVC pipe and specials complying with Standard spceils

Refilling with execavated earth after laying pipe line complying with Standard specification

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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