Maintenence of RWSS to Canacona Const. S.H Urgent rectification work of 20m3 GLR and Improvement of pipeline at RWSS Baddem in VP Cotigao in Canacona Const.

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 mts. lead.

Demolishing cement concrete 1:3:6 or richer mix including disposal of material within 50 m lead.

Providing & laying cement concrete 1:2:4 (1 cement: 2 coarse sand: 4 graded granitic or basaltic stone aggrt. 20 mm. nominal size) excluding cost of centering shuttering and finishing in:

All works upto plinth level

20mm plaster with neat finish in cement mortar 1:3 for internal surfaces of the water tank such as one side of conical wall one side of vertical wall one surface of dome complete as per the direction of the Engineer-in- charge.

18mm cement plaster in two coats under layer 12mm thick cement plaster 1:5 ( 1 cement : 5 coarse sand) and top layer 6mm thick with cement plaster 1: 3 (1 cement : 3 coarse sand) finished with sponge.

Providing and applying one coat of gamma coating or equivalent such as DR. bake krishna conchem asia paints atul limited burger paints expoy primer 50 to 60 microns thick and covering two coats of gamma coating or equivalent such as DR. bake krishna conchem asia paints atul limited burger paints 30microns thick each to new M.S pipes and structural steel or concrete surface including preparing the surface by finishing by solvent de-greasing and de-rusting by applying chemical method and scaffolding is necessary as per manufacture specifications complete in all respects as per the direction of the Engineer- in- charge. in Ground level reservoir.

Providing 40mm (1½)dia G.I. Ladder medium class G.I. Pipe with 20 mm dia G.I. Pipe (medium class) steps 45cm wide place at 30cm c/c welded in the interior of reservoir including painting two coats with non- poisonous red oxide paint etc. complete.

Earth work in excavation by mechanical means (hydraulic excavator)/manual means in foundation pipeline trenches, drain not exceeding 1.5m in width 10 sq.m on plan including dressing of sides ramming of bottoms for all lead and lift including setting out the excavated soil & disposal of surplus soil with all lead including providing barricading danger lighting guarding as directed by departmental officer in all types strata comprising any of the materials such as soil, silt sand clay gravel moorum of all conglomerated laterite rock, soft rock fissured shattered decomposed rock or weathered rock and all such other materials as described under Appendix A to these specification either in full or in parts as the case may be adopting any approved method of methods as may be convenient or permitted inclusive of chiselling, wedging etc, blasting probhibited in all conglomerates as directed by the Engineer-incharge etc, complete.

Supplying at store or site of work Rigid PVC (SEL FIT) pipes for public water supply including Railway freight carting loading and unloading stacking transit insurance etc. complete Conforming to IS: 4985-2000 and bearing ISI mark Class 6 kg/cm2

90 mm dia

Supply of rigid PVC fittings conforming to IS: 7834-1975 designed for precision and accuracy so as to join PVC pipes and other specials including railway freight carting loading and unloading and stacking etc. complete.

Elbow PN 6 (6 kg/cm2)

90 mm dia

END CAP ( Plain ) PN 6 (6 kg/cm2)

90 mm dia

Male Threaded Adaptor

90 mm dia

Service Saddle

Long Bend 90 degree 6kg/cm2

90 mm dia

Conveying carefully from stack at site 250m from both sides rolling and lowering in trenches laying true to line and level and perfect linking for joints for P.V.C / H.D.P.E complete in all respects as per the direction of the engineer in-charge

Jointing of rigid / SEL FIT PVC pipes by cleaning the pipe with solvent cement including the cost of solvent cement and hydraulic testing of joints etc. complete as per IS:7634-1975 Part 3 including hydraulic testing of joints as directed by the engineer in-charge.

90 mm dia

Refilling the pipeline/foundation trenches plinth sides foundation etc. with available excavated earth in layers not exceeding 20 cm depth consolidating each layer ramming and watering lead upto 50 M and all lifts and disposal of surplus earth as directed by Engineer in Charge.

Supplying at store or site of work including railway freight carting loading unloading stacking etc. C. I. single large orifice air valve ( fig S2confirming to IS 14848/2000 with suitable connections as directed by Engineer -In- Charge for working pressure of 10kg/sq.cm. (Class B)

25 mm dia

Providing and fixing brass full way valve (heavy) duty with wheel of approved quality :

80 mm nominal bore

Fixing C.I. Single large orifice air valve of similar make with bronze ferrule at inlet screwed suitable to working pressure of 15kg/sq. cm for 12 mm to 20mm and 10kg/sq. cm for 25mm to 50mmcompleteas directed by the engineer in-chargeof following sizes.

25 mm dia

Providing and laying in position cement concrete 1:2:4 (1 cement : 2 coarse sand: 4 graded granitic or basaltic stone aggregate 40 m nominal size) excluding cost of centering shuttering and finishing :

All works upto plinth level

Centering & shuttering including Strutting Propping & removal of forms for :

Vertical surfaces such as retaing walls return walls Partitions walls (any thickness) including attached Pilasters Buttresses Plinth and string courses Fillets and the like