Operation and Maintenance Scheme 2022-23

Amount

Earth work excavation for foundation in all soils and sub soils and to full depth as may be directed except in rock requiring blasting but inclusive of shoring and strutting and balling out water wherever necessary refilling the sides of foundation with excavated earth in layers of not more than 15cm thick well rammed and consolidated depositing the surplus earth within the compound with an initial lead of 10cm and lift of 2m in places shown by the departmental officers clearing and levelling the site etc., complete complying with standard specification Compound wall

Cement Concrete of mix 1 : 4 : 8 (One Cement four M sand eight aggregates) using 40mm gauge hard broken including cost conveyance of all materials to site including formwork and centering labour charges, transporting and placing in position including shoring, strutting, forming protective bunds, cofferdams bailing out of water labour for mixing compacting, finishing and curing, working at depths, tools and plants and incidental charges such as sheeting, shoring and bracing and their subsequent removal etc., complete as per standard specification.

Supplying , errecting and Centering for Side and Soffiots including necessary supports for plane surfaces in all floors with all cross bracings using mild steel sheets of size 90x60cm & 10 gauge stiffened, welded with steel angle of size 25x25x3mm for boarding laid over silver oak joists (Country wood) of size 10x6.5cm spaced @ about 90cm c/c and supported by casurina props of 10 -13cm dia.spaced @ 75cm c/c etc., complete complying with standard specifications for Side wall etc., Complete. Mat and Kerb wall

Column

Brick Work in Cement Mortor 1:5 Mix (one cement, five sand) using new best II Class Bricks of size 9 ” x 4 3/8 “x 2 3/4 ” from approved quarry including cost and conveyance of all materials to site. Loading and unloading charges and labour charges for mixing, laying and curing etc. complete. Complying with std. specifications Above Ground Level

Providing and Laying Wet Mix Mecadam using 0.396m3 of 45-22.40mm graded metal, 0.528m3 of 22.40-2.36mm graded metal and 0.396m3 of 2.36 and below size graded metal premixed with water to a densemass on a prepared subgrade / base to template in uniform 15cm Consolidated thickness and consolidation with Vibratory roller of 8 to 10 tonne capacity in stages to proper grade and camber rolling with protecting edges, etc completing with MORTH specification Clause 406.

Rubberised Interlocking Paver Block M40 grade providing and laying of 63 mm thick heigh strength type confiriming IS 15658 - 2006 of Rubberised Interlocking Paver Block in required size of mininmum compressive strength of 40N/mm2 in uniform shape of approved make to be laid in flumying bore pattern with approved nin - sticking surface in the top and the rate including levelling the base Stone dust cushion 100mm thick laying out the pavement cut the pieus to fit edge, vibrating pavers, sweeping transporting leading unloading as per standard specification.

Plastering in C.M. 1 : 5 (one cement, five sand) to 12 mm thick including all cost and conveyance of all materials to site including cost of cement which will be purchared locally by the contractor and conveyance of the same to the actual work site and cost form work including watering curing and all leads of good potable water and all other.

R.C.C. 1 : 11/2 : 3 (One Cement one point five sand three aggregates) using 20mm gauge hard Granite broken stone jelly including cost curing, etc., complete as per standard specification and as directed by Engineer incharge. Below Ground Level

Above Ground Level

Supplying and Fabrication of Steel and placing in position MS / Ribbed tor steel grills for RCC works as per design given including cost of steel and GI binding wire in Floors etc., Complete complying with standard specification in force per Kilogram.

Supplying and fixing MS L Angle directed by the departmental officers inclusive of cost of MS grill and labour charges including one coat of red oxide and fixing in position etc. complete (as per schedule of rates) as per standard specification

Providing two legged scaffolding using 15cm dia- meter blue-gum posts or casurina posts or best quality bamboo posts of 4m overall length (3m height + 0.5m. in to the ground +0.5m projection) the distance between the two rows being 1.25m, and the spacing of posts being 2m, in both the rows with two horizantal posts with 0.5m overlap on either side and braces at 2m, c/c including longitudinal and transverse middle braces to step up and providing a platform with country wood planks of 40mm, thick and 1m width, etc., in a complete form using coir and nails - 1m. Run. A) 0 to 3.00 m

Plastering with cement mortar 1:3 ( One cement and three sand)10 mm thick including cost and conveyance of all materials to site including curing etc.,complete as per standard specification – 10m2

Plastering in Cement Mortar 1:3 Mix (one Cement, Three M-sand ) 20mm thick including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc. complete . complying with std. specifications

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 departmental officers.

Painting two coats with best-approved quality Colour Enamel paint for New Iron Works including cost and conveyance of enamel paint etc., Complete.

Providing and fixing of Reinforced Cement Concrete inner access Ladder inReinforced Cement concrete 1:11/2:3 (One cement, one and half Sand and three aggregate) using 20mm HBG stone for OHT including cost of reinforcement, placing gril in position, centering shuttering charges, mixing concrete curing etc., to required height and clear width of 45cmm consisting of two Nos. of vertical post of 10cm x 15cm and step slab 25mmx25mm etc., complete and as directed by departmental officers.

Supply and Delivery OPENWELL SUBMERSIBLE PUMPSET WITH ISI MARK AS PER IS 14220 WITHOUT PANEL BOARD including cost and conveyace of all labour charges etc., complete(250LBM*125M)

Provision for GI pipe connection arrangements for inlet outlet, scour and overflow etc., including cost of pipes, specials, valve, labour charge for lifting, aligning, cutting, threading, fixing and painting of GI pipes with two coats of approved quality enamel paint etc., complete as per standard specification.80mm dia GI pipes

80 mm CI Sluice Valve

Lowering GI pipes and specials in the trenches and laying to proper grade and alignment and as directed by the TWAD Officers 80mm dia GI pipes

Sri Sakthimurugan Construction