REMOVING THE DAMAGED PRESSED TILES AND REPLACING THE NEW PRESSED TILES ON OPEN TERRACE, MICRO CONCRETE WORK FOR DAMAGED COLUMN AT AULMIGU MARIYAMMAN TEMPLE.

Dismantling, clearing away carefully stacking materials useful for re-use for any thickness of walls

Dismantling RCC by manual / by using deploying machineries

One Course of Pressed Tile Roof finish in cement mortar

Finishing the top of roof with one course of machine pressed tiles of following size of approved quality set in Cement Mortar 1:3 (One Cement and Three Crushed stone Sand) 12mm thick mixed with water proofing compound conforming to ISS at 2% by weight of cement used and the joints pointed neatly to full depth of tiles with the same cement mortar mixed with red oxide and water proofing compound including curing etc., complete complying with standard specification and as directed by the departmental officers.

Supplying, Fabricating and Placing in position Mild steel/Ribbed Tor steel grills for all RCC works as per design given including cost of steel and G.I. binding wire in all floors etc. Complete complying with standard specification. (Contractor has to make his own arrangements for the supply of steel and binding wire)

Prior to installation of the Galvashield XPI units, check the continuity of the steel reinforcement. Any loss of continuity will require additional electrical connections or restoration of continuity by effective means. Select a location for the Galvashield XPI as close as practical to the edge of the repair zone. Galvashield XPI units should be positioned around/along the repair boundary. In addition to standard substrate preparation, the Galvashield XPI anode(s) shall be thoroughly pre-soaked in clean water for a minimum of 10 minutes and a maximum of 20 minutes, prior to the application of the repair mortar. Tighten tie wires using Galvashield Fixing Tool so that no free movement is possible, thus ensuring good electrical continuity. To test electrical continuity between tie wires and reinforcement bar a continuity meter should be used.

Clean the rebars using the rust remover if there exists any rust, otherwise clean the rebar free of foreign material. Mix the base and hardener of the zinc rich epoxy resin mechanically using a slow speed heavy duty drilling machine fitted with mixing paddle. Apply the mixed materials to the cleaned rebar and allow it to dry complete.

Application of two component epoxy bonding agent Nitobond EP or equivalent after the surface has been completely prepared. Care shall be taken to achieve uniform application of the epoxy bonding agent over the prepared area.

Supplying and erecting steel centering including necessary supports For plane surfaces such as rectangular or square RCC columns etc. which require only nominal strutting using mild steel sheets made of 10 gauge thick welded with MS angle size 40mm x 40mm x 5 mm and supported by Steel Adjustable Telescopic Props of Size 2m x 2m (expandable upto 3.60m) made with outer steel pipe with dia 50mm (3.60mm thick) and inner steel pipe with dia 40mm (2.90mm thick).etc..complete in all floors complying with standard specifcation. Steel Adjustable telescopic props shall be provided as directed by the departmental Officers. (Payment for centering shall be given after the concrete is laid).

Micro Concreting for the damaged structural element like slab/beam/column by Stocking sufficient quantity of micro concrete and 12mm downgraded chips on site to enable the completion of the pouring in a continuous operation. An approved concrete mixer or a slow speed heavy duty drilling machine fitted with mixing paddle shall be used. Mix the micro concrete and the 12mm down grade chips in the ratio of 1: 0.5 (one part of Renderoc RG and 0.5 part 12mm down chip) by weight with required quantity of water powder ratio 0.16 and place the same to the prefixed formwork well before the epoxy jointing compound dries up. Remove the formwork after 24 hours in the case of columns and after a period of 72 hours in the case of slab and beam and check for any surface defects and if so apply the polymer modified mortar complete. The rate shall include the cost of all the operations and complete.