Construction of 20000 Litre OHT and Providing Water Supply arrangements at W.No.16 Government High School in Kangeyam Municipality

Amount

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 Departmental 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

crushed stone sand filling for foundation with clear river crushed stone sand including cost of crushed stone sand watering, ramming and consolidation etc complete as directed by Departmental officers.

Cement concrete 1:4:8 (one cement four crushed stone 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 Departmental officers. 1.5-4.5m below GL

RCC in M20 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 departmental officers.

A).For items 1.5m to 4.5m below GL

B).For items 0 to 1.50m below GL

C).For items 0m to 4.5m above GL

D).For items 4.51m to 7.32 m above

E).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 40mm dia GI pipes spaced at 75cm centre to centre complying with standard specifications etc., complete and as directed by Departmental officers.

A).PLANE SURFACES

a).0-3.3m Below & above G.l

B).Curved Surface

C).Square column

a).Below G.L. &above G.L 0-3.30

Painting two coats with ready mixed plastic emulstion paint of first class quality paint and approved colour including priming coat through scrapping clean removal of dust etc., complete

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 Departmental officers.

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 10,000 lit. capacity OHT of suitable inclined length, including bottom anchorage and transportation and as directed by Departmental officers. (TWAD SOR 2024-25, Pg.No.92)

Providing and fixing of RCC inner access ladder in M30 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 Departmental officers.

Supplying and Fixing in position CI Manhole covers (Light or Heavy duty) mof 600mmx 600mm sizes of best approved quality and as per standard specification etc., complete

Painting emblem 1 x 1 on the SR with enamel paint as per Board's specification and as directed by departmental officers (TWAD SOR 2024-25, Pg.No.195)

Supply and Fixing of water level indicator including cost of material, conveyance and all labour charges etc., complete as per standard specification

Earthwork open excavation in all soils and sub soils and to full depth as may be directed except in rock requiring blasting but inclusive of shoring, strutting and baling out water wherever necessary and depositing the excavated earth within the compound in places shown by departmental officers with an initial lead of 10m and lift of 2m and clearing and leveling etc. complete complying with standard specification. (TWAD SOR 2024-25, Pg.No.191)

Supplying of 63 mm dia PVC 6 KSc pipe with ISI marked including transporting the same to the site directed by the departmental officers etc complete as standard specifications (TWAD SOR 2024-25, Pg.No.5)

Supplying fixing of 50 mm dia G.I pipe B class cut into 3m length and threaded on both sides with an extra coupling as per standard quality including transporting the same to the site directed by the departmental officers etc complete as standard specification. (TWAD SOR 2024-25, Pg.No.27)

Lowering of PVC and GI pipes and specials to trench and laying to proper grade and alignment jointing with PVC and GI couplers with cement paste and testing to the required pressure including conveyance of water for filling during testing.etc complete (TWAD SOR 2024-25, Pg.No.161 & 171)

50mm to 65mm dia GI Pipe

50mm to 75mm dia PVC Pipe

Refilling in basement with excavated earth in layers of not more than 15cm thick well rammed, watered and well consolidated etc. complete complying with standard specification. (TWAD SOR 2024-25, Pg.No.191)

SUBBIAH NAICKER SUBBIAH (BID ID -1543247)