Public Works Building And NH Department Tender

Epoxy injection grout in concrete/RCC work of approved make

Grading roof for water proofing treatment with Cement concrete 1:2:4 (1 cement : 2 coarse sand :4 graded stone aggregate 20mm nominal size)

Providing and fixing to the inlet mouth of rain water pipe cast iron grating 15 cm diameter and weighing not less than 440 grams.

Polyurethane based waterproofing system Base preparation 1. Providing and laying water proofing treatment to horizontal and vertical surfaces of podium slabs, including cleaning the surface with wire brush, treating all surface cracks coving preparation at wall - slab joint and preparation of surface in all aspects to receive the waterproofing. 2- Application of Primer: Apply Epoxy based primer over well prepared surface at 150-200 gm per Sq.Mtr. 3-Providing and applying Single component moisture cured polyurethane Elastomeric liquid water proofing coating like Nitoproof 600 PF of Fosroc/ Aquarm WPU 1K(E) of MYK or equivalent to achive a DFT of 1 mm over the entire horizontal area extending upto 300mm on the parapet wall and then terminated. Sprinkling quartz sand @ 200 gm/m2 while second coat of PU coating is still tacky for providing mechanical grip to facilitate installation of plaster on the veriical walls. The membrane will have the following technical parameters: Tensile Strength : 2 N/mm2(ASTM D412) Elongation at break : 500 % (ASTM D412) Punture resistance : 90 N (ASTM D 4833) Adhesion to Concrete: >2.0 N/mm (ASTM D 903) 4- Providing and laying 150 Gsm Geo fabric membrane as separation layer