Repair and Maintenance works to the inner and outer wall of Ash Water Reservoir of Unit 5 in Ash Water Pump House of Stage 3 area

Amount

Providing wooden platform with scaffolding arrangement using 10 to 13cm dia Casurina posts and 40mm thick country wood planks for providing platform over the scaffolding including cost of all materials labour, lead, lift etc., complete.

Making holes for pouring micro concrete of size 0.15 x 0.15m in RCC roof including charges for filling the opening with micro concrete including cost of all materials, labours, T&P, lead, lift, etc., complete.

Removing the spalled/ distressed RCC from the existing concrete to an average thickness of 50mm, disposal of debris with a lead of 1 km and roughening the surface thoroughly with Reebaklens fosroc acid/ equivalent with all lead, lift, labour, etc complete.

Supplying & providing RTS rod including cutting, bending, tying & fixing in position as per specification including binding wires, cost of all other materials, labours, lead, lift, curing, etc. complete.

Providing Micro concrete for 75mm thickness: a) Applying One coat of Nito Zinc/equivalent primer after thorough cleaning of rust in the reinforcement rate including cost of all materials, labour, lead, lift etc., complete as directed by the engineer at site. b) Providing fabricating and erecting slurry tight from work with plywood shutters with suitable supports, which do not deform (or) micro concrete for pedestals including cost of all materials, labour, lead, lift, head load etc., complete as directed by the engineer at site. c) Providing micro concrete using Rendroc RG (or) equivalent as per manufactures specifications. This mixed micro concrete should be placed continuously for an average thickness of 75mm including cost of all materials, labour, lead, lift, etc., complete as directed by the engineer at site. d) Applying One coat of Polymer modified Acrylic Emulsion (Nito bond AR or equivalent) in the etc., including cost of all materials, labour, lead, lift pedestals etc., complete as directed by the Engineer at site.

Providing protective coating of special type of two part polymer blend epoxy coating using free Mastic G316 over the floor, walls and ceiling of the ash water Reservoir of Unit V as per manufacturer's specification including removal all laitance and mortar over the surface, surface preparation using wire-brush, grinding machines/chipping hammers, through washing of surface with ordinary portable water and applying two coats of special polymer blend epoxy using brush/roller as required to ensure a minimum total thickness of 250 microns. (DFT)

Siva Co

S. THIRUMAL