Arresting leakages and ancillary repair works at CSC Building, Guruvayur

Amount

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor, etc., up to floor five level, excluding the cost of centering, shuttering and finishing :

1:2:4 (1 Cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Cleaning of roof area,parapets, coping of CSC building & TE building [Appx Area:400Sqm] by using high pressure washer including removal of all waste within 50 metres of lead as per the direction of Engineer in Charge..

Removing existing damaged waterproofing membrane [Appx Area:50Sqm] including all associated adhesive residues, and thoroughly clean prepare the substrate surface to ensure proper adhesion of the new water proofing compound as per the direction of Engineer in Charge.

Removing all plants/saplings with roots growing on building side at all levels,spouts,khurras,canopy chajjas roof area including application of herbicide to prevent the regrowth etc including disposal of rubbish to the dumpimg ground within a distance of 50m

Removing the existing roofing tiles [Appx Area:45 Sqm] from the roof at the third floor ilevel ncluding dismantling of cement morter beading and thoroughly clean the roof surface and including disposal of all debris and waste materials within 50 metres lead as per the direction of Engineer in charge.

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge.

In cement mortar

Dismantling the PVC water tank [4 Nos] in its current position due to the damaged condition of the brick masonry base, including disconnection of the existing water supply connection.Relocating the tank to new base and restoring all water connections,ensuring proper installation and functionality as per the direction of Engineer in Charge.

Applying a coat of Dr. Fixit Roofseal classic or equivalent [diluted with water in the ratio 2:1] as self priming 9.00-10.00 Sq.m/liter in the SSD condition.Allow coating to dry for 3-4 hours.Apply two coats of Dr.Fixit Roof seal classic or equivalent @2.00-2.20 Sqm/liter/coat, without water dilution,the rate of application being the same for both the coats. This would ensure correct consumption of material that will deliver a total DFT 450-500 microns. Allow thesystem to air cure for 5 days minimum. Check to see no void surface is left untreated/ uncoated. The material having following technical specification as per ASTM D 6083 M- Type II, attains a tensile strength of 2,5 N/mm2 confirming to ASTM D 2370, Elongation at break >300% confirming ASTM D 2370, Adhesion to concrete 2.0N/mm2 confirming ASTM D4541 and crack bridging ability upto 2mm, air cure the coating for 7 days, before water pound test for 48 hrs etc complete as per the direction of the Engineer in charge. (The system comes with 10 years water proofing warranty from M'S Pidilite Industries, and the agency must provide a 10-year gurantee bond).

Providing, mixing and applying SBR polymer (of approved make) modified Cement mortar in proportion of 1:4 (1 cement: 4 graded coarse sand with polymer minimum 2% by wt. of cement used) as per specifications and directions of Engineer-in-charge.

With cement mortar 1:4 (1 cement : 4 fine sand).

SHENITH P K (BID ID -892632)