Repair and Renovation and waterproofing work at the washroom of A and C block and Corridor of Dhansiri hostel in IITG Campus

Removal of all the old tiles, if exist and cleaning the same to remove the loose particles, debris, dust etc., then saturating the surface with water, including cost of labour, consumables, tools and tackles etc., complete.

Providing and laying water proofing treatment in sunken portion of WCs, bathroom, wall etc., by applying cement slurry mixed with water proofing cement compound consisting of applying : (a) First layer of slurry of cement @ 0.488 kg/sqm mixed with water proofing cement compound @ 0.253 kg/ sqm. This layer will be allowed to air cure for 4 hours. (b) Second layer of slurry of cement @ 0.242 kg/sqm mixed with water proofing cement compound @ 0.126 kg/sqm. This layer will be allowed to air cure for 4 hours followed with water curing for 48 hours. The rate includes preparation of surface, treatment and sealing of all joints, corners, junctions of pipes and masonry with polymer mixed slurry

Providing and laying of cement concrete of proportion 1:5:10 (1cement : 5 sand : 10 AAC block bats of size 40mm) in sunken floors at all floors, heights and levels

Providing and laying M20 Fibre Reinforcement Concrete Screed over the treated surface as per direction of Engineer in charge. (Integral crystalline admixture for to be added for water proofing treatment to be paid separatly)

Providing and mixing integral crystalline admixture for water proofing treatment to RCC structures like basement raft, retaining walls, reservior, sewage & water treatment plant, tunnels / subway and bridge deck etc. at the time of transporting of concrete into the drum of the ready-mix truck , using integral crystalline admixture @0.80% (minimum) to the weight of cement content per cubic meter of concrete) or higher as recommended by the manufacturer's specification in reinforced cement concrete at site of work. The material shall meet the requirements as specified in ACI-212-3R- 2010 i.e. by reducing permeability of concrete by more than 90%, compared with control concrete as per DIN 1048 and resistant to 16 bar hydrostatic pressure. The crystalline admixture shall be capable of self-healing of cracks up to a width of 0.50mm. The work shall be carried out all complete as per specification and the direction of the Engineer-in-charge. The product performance shall carry guarantee for 10 years against any leakage.

Providing and applying of swellable type water stop tape, 19 mm x 25 mm thick in linear metre (expansive nature) for construction joints treatment of RCC structure such as raft slab, retaining walls, water storage tank and at the junctions of raft slab with the retaining walls etc.. After cleaning the surface, one coat of required primer for swellable water stop tape shall be applied throughout the length of the joint @3.78 litre per 240 running metre. Over the primed surface swellable type water stop tape shall be placed. The work shall be carried out all complete as per specification and the direction of the Engineer-In-Charge. The product performance shall carry guarantee for 10 years against any leakage

Removal of all the old tiles, if exist and cleaning the same to remove the loose particles, debris, dust etc., then saturating the surface with water, including cost of labour, consumables, tools and tackles etc., complete.