Maintenance of Water Supply System Repairs of 600 Cum capacity GLR behind Cottage Hospital at Alto Chicalim in Dabolim Constituency

Demolishing brick work in cement mortar including stacking of serviceable material & disposal of unserviceable material within 50 mts. lead.

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.

Painting three or more coats with acryllic exterior paint of approved brand and manufacture (Such as Dulex/ Asian Paints/ Sherwin Willians) including applying one coat of cement primer and one coat of surface treatment etc. complete.

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.

Providing water level indicator (gauge) with M. S. Sheet 3 to 4mm thick with copper floats indicator and flexible copper/nylon wire fixed on standard pullies including necessary arrangement to prevent the swinging by hooks painting figure with approved enamel paint etc. complete.

Providing 80x60cm M.S. inspection door with 25x25x5mm angle iron frame welded and M.S. shutter 3mm thick with locking arrangement iron but hinges 100mm x 40mm size painting with red oxide paint in two coats. Complete

Making plinth protection 50mm thick of Cement Concrete 1:3:6 (1cement: 3 Coarse Sand: 6 graded stone aggregate 20mm nominal size) over 75mm bed of dry laterite aggregate 40mm nominal size well rammed and consolidated and grouted with fine sand including finishing the top smooth.

Cleaning the surface and filling cracks (if any) applying epoxy putty wherever necessary Providing and applying 3 coats of High performance moisture compatible corrosion resistant Food grade non toxic epoxy stearate coating (WATERSEAL) having impermeable film withstanding to hydrostatic pressure up to 5 kg/cm2 with a DFT of 250 micronson the prepared RCC surface. If there is honey combing or excessive unevenness in the surface then 10mm plaster in CM 1:3 should be applied on the entire surface followed by application of 2 coats of WATERSEAL with a DFT of 150 microns. incl. cost of scaffolding transport etc. as per dir of EIC. All the chemicals will be of Krishna Conchem Products Pvt. Ltd. or Equivalent.

Drilling holes of specified dia. fixing it with PVC nozzles sealing the diaphragm with Epoxy Sealant EPCO-1010 allow it air cure for minimum 8 hours cutting nozzles after grouting and sealing it with EPCO-1010 etc. complete as directed. Injecting low viscous high molecular weight polymer MONOPOL with pressure created by compressor and epoxy injector with accessories. The pressure shall be not exceeding 3-4 kg/cm2 . Grouting to be done in cracks till the nozzle refuses to accept the grout or it flows from the adjacent nozzles etc. complete. incl. cost of scaffolding transport etc. as per dir of EIC. All the chemicals will be of Krishna Conchem Products Pvt. Ltd. or Equivalent.

GROUTS for Crack Injection Grouting Ultrafine cementitious single component crack injection for structural repairs.Providing and supplying Ultra-fine cementitious grout Alccofine 1109SR manufactured by M/s Counto Micro-fine Products Pvt Ltd Goa or equivalent. Material should comply to IS 14343 forMarsh Cone Viscosity of 35 to 45 seconds shall have the Particle Size D istributionwith d95 <12 microns and minimum compressive strength of grout more than 30 MPa at 7 days. Water to grout powder ratio should not be more than 0.6 for marsh cone viscosity and compressive strength test.