Mitigation measure to sustain and protect the drinking water supply scheme to Parwanoo Town SH Repair of dam across Kaushalaya Khad by placing mass concrete and anchoring of concrete work, repair of approach road and protection work to approach road

Amount

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exveeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth leads in all leads and lifts including caeeiage of materials complete in all respect and as per directection and to the entire satisfaction of Engineer-in-charge.

Ordinary Soil (i.e.10 % of total qty)

Ordinary Rock(i.e.40 % of total qty)

Earth work in excavation of foundation trenches for structures complete i/c refilling trenches in 250mm layer, ramming and watering etc. and dressing of sides, bottom etc. including dewatering, shoring and shuttering disposal of excavated surplus earth in all leads and lifts complete in all respect to the entire satifaction of Engineer-in-charge.

Ordinary Soil (i.e.10 % of total qty)

Ordinary Rock (i.e.10 % of total qty)

Providing and laying Cement concrete 1:4:8 (1 Cement: 4 Sand: 8 Graded stone and aggregates 40 mm nominal size) and curing complete excluding cost of form work in foundation and plinth including entire carriage of material in all respect and as per direction and to the entire satisfaction of Engineer in charge.

Providing and laying in position machine batched and machine mixed design mix of M-30 grade cement concrete for reinforced cement concrete work, using cement concrete as per approved design mix,including pumping of concrete, to site of laying and curing complete but excluding the cost of centering, shuttering,finishing and reinforcement, including admixture in recommended proportions as per IS: 9103 to accelerate, retard setting of concrete, improve workability without imparing strength and durability as per direction of Engineer-in-charge."(Note:- Cement content considered in this item is @ 340 kg/cum. " Excess/less cement used as per design mix is payable/recoverable separately).

Providing tor steel reinforcement for RCC work including bending,winding and placing in position complete upto floor two level.as per the direction of Engineer-in-charge including entire carriage of material upto all leads and lifts complete in all respect and as per direction of Engineer-in-Charge.

Providing & laying cement concrete 1:3:6 (1 cement: 3 Sand : 6 graded stone aggregate 20mm nominal size) WITH 15 % Plum concrete excluding cost of form work in retaining wall/ breast wall , the size of plum shall be 150 mm to 300 mm as per HPPWD specification including all lead & lifts complete in all respects as per Direction of Engineer-in-Charge.

Providing form work with steel plates 3.15mm thick welded with angle iron in frame 30x30x5mm so as to give a fair finish including centering, shuttering strutting and propping etc. with wooden battens and ballies height of propping and centering below supporting floor to ceiling not exceeding 4 mtrs and removal of the same for insitu reinforced concrete and plain concrete work in:-

Vertical surface such as walls (any thickness) partitions and the pillasters, buttresses, plinth and string courses and the like.

Providing, laying, jointing and testing in trenches of Galvanized steel pipes conforming to IS/ISO:3183-2019 latest upto date amendments with steel grade L-210 (latest with upto date amendments) having wall thickness as specified below with bevelled end and capable of withstanding required test pressure in rendom length of 4 to 7 meters, including specials, short pieces, bends, reducers, tees etc. made from parent tube. The M.S. flanges are to be provided 1% of total joints and remaining 99% joints with butt welded joints as detailed below. The MS flanges shall confirm to BIS 6392-1971 (with latest up to date amendments)of FT-5 duly welded in three layers (one inner and two outer) with pipes at both ends as per relevant BIS standards along with nuts and bolts of required sizes confirming to BIS 1364 (with upto date ammendments). 3mm thick compressed asbestos fiber/ synthetic rubber gaskets confirming to relevant BIS standards. The laying of pipe shall include all operation such as cutting, welding, jointing,making pipe bevelled for butt welded joints, providing & fixing of MS flanges, fabrication of bends, tees, valves etc. including lowering and laying in excavated trenches to ensure required level including flushing, cleaning and hydraulic testing complete in all respects to the satisfaction of the Engineer in charge.

300 mm dia 4.80 mm thick

Providing welding and fixing of M.S. flanges 300 mm dia FT 5 @ 1% of joints, conforming to following tables as per IS 6392-1971 (Latest with up to date amendments) and welding of MS flanges with Galvanised steel pipes in three layers i.e two-layer on outer faces and one layer on inner faces to make the joint leak-proof (The cost of proving and laying of GI pipes and butt welded joints to be measured and paid for separately). The welding of flanges should conform to IS 816-1969 with electrodes as per IS 814-1991 and the required number of nuts and bolts conforming to IS 1364, the thickness of gasket not less than 3.00 mm conforming to IS 2712-1998. The work shall be done as per the entire satisfaction of the engineer in charge of all leads and lifts

Providing and fixing double flanged Cast iron sluice valve 300 mm dia of Leader/Kirloskar or any approved make conforming to BIS: 14846/2000 with up to date amendment as per Class PN-1.0 capable to withstand in normal seat pressure of 10 Kg/cm2 including champion sheet gasket 3mm thick, welding with M.S. flanges of Flange table-5 as per IS 6392-1971 including carriage in all leads and lifts as per direction and to the entire satisfaction of Engineer-inCharge

Excavation in foundation, trenches in each work, in all kinds of soil such as kankar, murram, conglomerate and decomposed or loose soil by pick, jumper work, blasting, in soft or hard rock or by chiseling and including removal of black top in all leads and lifts and then stacking the excavated soil not more than 3 meters clear from the edge of excavation and then returning the stacked soil in 1.5 cm layers, when required in to plinths, sides of foundations etc. consolidating each deposited layers by ramming and watering and then disposing off all surplus excavated earth in all leads and lifts and as per directions of Engineer-in-Charge.

Providing and laying heavy duty precast cement concrete 80mm inter locking paver blocks vibro compacted upto M-50 grade i/c border or kurb block grey or coloured over sub-base of concrete with 25 mm thick average thickness of cement mortor 1:4 (1 cement : 4 sand) laid over and jointed with neat cement slurry mixed with pigment to match the shade of blocks i/c curing rubbing and polishing completeincluding Sub base concrete floor to be paid for 80 mm thick inter locking blocks.

dismantle paver block to be relaid

new blocks

Back filling behind retaining wall/ breast wall complete in all respect including carriage of material in all leads and lifts.

Providing and filling in plinth with sand under layer including watering ramming, consolidating dressing complete in all lead and lifts as per direction of Engineer in Charge.

Drilling holes of 32 mm dia,at bottom and sides of hard /soft rock formations or in existing concrete mass of dam body with power driven drilling machine to a minimum depth of 1000 mm in to hard / soft rock or existing concrete mass for providing vertical anchors at bottom & inclined anchors on side including providing inserting in drilled hole and fixing in position anchor bars of 25 mm dia of high yield strength deformed steel of grade Fe-415 conforming to IS 1786-2000 or latest with upto date amendments by filling the annular space with grouting of cement mix with epoxy based sealing compound.Holes and anchor bars shall be provided in a staggered fashion and spacing shall not exceed @0 50 m c/c. Anchor bars in sides shall be provided slightly inclined sloping downward in to rock / concrete mass on sides & minimum Iength of 1000 mm of each anchor bar shall extend in to the concrete mass to be laid and jointed with existing concrete dam.

Providing and cutting in to suitable pieces 25mm dia HYSD steel prods/bars conforming to BIS 1786-2008 or latest upto date ammendments for anchoring including cutting of rods in 2.00 mtrs peces and placing in hole filling with annuler speces with grouting of cementand proxy sealing compound complete in all respect including complete in all leads and lifts to the entire statisfaction and direction of Engineer-in-charge.

Providing and laying cement concrete 1:4:8 (1 Cement: 4 Sand: 8 Graded stone and aggregates 40 mm nominal size) and curing complete excluding cost of form work in foundation and plinth including entire carriage of material in all respect

Roshan Chauhan (BID ID -533278)

Suneel Dutt (BID ID -532874)

Hira singh manta (BID ID -531477)

Akhilesh Chaudhary (BID ID -533450)

AMERENDER SINGH (BID ID -532373)