SPECIAL REPAIR TO BUILDING NUMBER P-02 ( OTHER THAN MARRIED ACCOMODATION OF HEADQUARTER SQUADRON 1 ARMOURED DIVISION) AT OLD CANTONMENT PATIALA MILITARY STN

Dismantling of brick or terracing tiles of single layers on roofs incl cleaning of bricks/tiles and removal of unusable bricks/tiles and removal from site, complete all as specified and as directed

Removing of Mud in roofs, any thickness, including plastering and leeping (whether full thicknes removed or only a part thereof)

M&L for wire brushing and cleaning top surface of tiles, lime terracing or cement concrete, including flashings and junction of parapets, etc. complete all as specified.

M&L for cement concrete 1:3:6 type C1 using 20 mm graded aggregate as in padding over roof minimum thickness at khurra as 25 mm to maintain a slope of 1:100 complete all as specified and directed.

M&L for APP polymeric water proofing membrane minimum 3 mm thick and weighting not less than 3.6 Kg/Sqm black finish reinforced with non-woven polyster matt wt not less than 150 gms/Sqm with thermo fusable finish laid over compatible bitumen primer at the rate of 0.40 Ltr/Sqm torching over laps with a propane or abutan gas torch with a over lap of 75 mm at the side and 100 mm at the ends and sealing including applying a coat of cold emulsion bituminious primer all as per manufacturers instructions incl preparation of surface and applying two coats of aluminium paint over APP membrane complete all as specified and directed.

Supply only liquid water proofing compound complete.

M & L for PCC 1:2:4, type B-0 using 12.5mm graded stone agg as in roof curve, benching, mud stops, steps, coping and the like items slightly rounded or chamfered on the edges complete all as specified and directed.

M&L for efflorescence treatment to walls complete in all respect with following procedure :- (a) Removing existing plaster over the affected bricks to be removed using mechanical means. The affected bricks to be completely exposed complete all as specified and directed. (b) Apparent visible efflorescence to be first cleaned using hard wire brush and all cyrstal deposits to be removed. The bricks shall then be cleaned using soft brush of powdery crystals removed. Then make a 1 to 4 solution of vinegar and water (1 part vinegar to 4 parts water) and apply it to the efflorescence affected area using a nylon brush. Allow the vinegar/ water solution to sit on the surface of the affected area for 15 minutes, but do not allow the solution to dry. Rinse the area with clean water, using low pressure jet. Two cycles of cleaning using vinegar water solution to be repeated complete all as specified and directed. (c) The joints of bricks so cleaned shall be pointed using cement putty made a site using Sika Latex/SBR polymer diluted at ratio of 1:4 with water. The solution so made shall be used to be mixed with cement to make a putty consistency paste. The cement putty shall be then worked out in the joints which are clean and in SSD condition. (d) The bricks so pointed shall be cleaned of all dust or deposit using brush. A undiluted single component acrylic polymer-Sika Raintite, to be used to prime the brick surface. The primer while being tacky the first coat of water proofing coating is done, second coat is applied after a time interval of 4-6 hours after the first coat has dried. The water proofing coating shall be two component polymer modified cementitious coating-Sika top seal-107, having a thickness of 1.5mm in two coats. The material to be factory batched and ready to use. The two components shall be mixed using low speed drill having a RPM 350-450 and fitted with a paddle. The mixing to be done for 3-4 mintues to give a brush able consistency mix. The coating shall be done using brush 100-150mm wide brush. It is to be take care that material while being used is agitated every 3-5 mintues to avoid powder part getting settled. The water proofing coating shall have below properties Tensile Strength - 4.56 N/mm2 after 14 days exposure (According to ASTM D 2370) Bond Strength 2.0 N/mm2 at + 27o C (failure in substate). After application of second coat and while the material is still wet, coarse sand is sprinkled over the coating so as to ensure proper mechanical key is provided for subsequent plaster. (e) M&L for plastering 15mm thick over the treated surface shall be done with 1:4 cement sand plaster added with acrylic polymer-Sika Plastocrete Plus, @ 3% by weight of cement. Note : The complete item shall be got executed through the authorised applicator of manufacturer only all as specified and directed

Demolition of brick work or stone/boulder masonary built in cement mortor including all quoins,arches.pillars etc complete all as specified.

M&L Brick work with sub class 'B' bricks straight or curved on plan exceeding 6m mean radius bulit in CM 1:6 all as specified.