TNUHDB /418/ HD / SE East-II / 2024

Amount

Dismantling the damaged pressed tiles with weathering course without causing any damages to the existing structure under repair and to the adjacent structure etc., complete in all respects as directed by the departmental officers.

Providing and Applying high perfomance solar reflective & Acrylate silicon based Waterproofing coating which is single component, cold applied, water based acrylic and UV resistant water proofing treatment to the Existing Roof screed surface applied @ 1.5 l/m2 in 3 coats to achieve 1mm DFT, having tensile strength 2N/ mm2 confirming to ASTM D 412; Elongation at break ≥ 200%, Abrasion resistance 21mg confirming to ASTM D 4060 and Crack bridging ability up to 2 mm, including surface preparation, priming the surface with 1 coat diluted with water in the ratio 2:1 spreading @ 0.125 L/m2 as self-priming coat in the SSD condition and eading 45 gsm glass fibre mesh of 2.5 mm x 2.5 mm sandwiched between the first and second coat completely as per specification. The finished cost to include surface preparation, making coving at unction, treatment of cracks completely as per ecification. and including cost of materials, labour etc., complete in all respects as directed by the department officers.

Cement concrete 1:2:4 (one of cement, two of sand and four of hard broken stone) using 12mm size hard broken stone as screed concrete over the existing roof slab inclusive of shoring, strutting, bailing out water, ramming, curing, etc complete as directed by the departmental officers.

Finishing the top of roof slab with one course of approved quality of solar reflective ceramic tiles 305mm X 305mm X 7mm laid over the cement mortar bed of 20mm thick using cement mortar 1:3 (one of cement and three of sand) mixed with water proofing compound 2% by weight of cement and pointing with the same mortar etc., complete in all respects as directed by the departmental officers.

Repairing of Ellis Pattern flooring 20mm thick (Ellis pattern) with layer of cement concrete 1:3 (one of cement and three of hard broken stone) (No sand) using hard blue granite chips of size 3mm to 10mm and surface rendered smooth over RCC slab and staircase landing slab complete in all respects.

Clean removal of existing cement platering from the walls and replastering the same area with Cement mortor 1:5,( one of cement and five of P sand ) 20mm thick icluidng providing band cornice curing etc., all complete in all respects as directed by the departmental officers.

Removing the existing wornout cement plaster and loose concrete from the RCC portion after exposing the existing reinforcements and old concrete.the rust formed in the rods will be removed by grinding with brushes etc., after clearing the dust in the existing reinforcement and applying one coat of SIKA TOP ARMOTEC 108 in the portion 2.10 kg per one square metre and immediately plastering the ceiling portion with one layer of cement morter 1:3 (one cement and three of sand ) 20mm thick and finishing the surface portion with cement morter 1:3 (one cement and three of sand ) 12mm thick with adhesive mixture SIKA LATEX SOLUTION in the proportion of 2.40kg per 10sq.m including providing band cornice, curing, finishing smooth etc., complete in all respects as directed by the departmental officers.nd as directed by the departmental officers

Added GST @ 18%

T Azhakesan (BID ID -1187993)