NIeT NO- 57/NXL/2025-26 (Ist call) , Repairing work at Bagdogra Hindi Primary School, Naxalbari Block, Under Upper Bagdogra GP, Fund School Education Fund, FY 25-26

Providing waterproofing treatment over concrete roof surface (old or new) by the application of two coats of slurry prepared with latex of approved brand, water and cement in the proportion of (LP.W. Cement - 1:4:6) by volume, with brush in a time gap of minimum 4(four) hours to 14(fourteen) hours between the two layers, laying 20mm thick and sand and cement consolidated plaster (1:4) admixed with Plastocrete Super of approved brand 0.2% by weight of cement, laying flat 1st class Brick Bats / Bricks over the mortar keeping a gap of 10-20 mm between two bats, filling the vertical joints with the aforesaid mortar, providing a second layer of 20 mm thick sand and cement plaster (1:4) admixed with Plastocrete Super as above over the brick layer, the top surface of the treatment should be chequered to provide the antistrip property.

125 mm. thick brick work with 1st class bricks in cement mortar (1:4) (i) up to 4th floor

Plaster (to wall, floor, ceiling etc.) with sand and cement mortar including rounding off or chamfering corners as directed and raking out joints including throating, nosing and drip course, scaffolding/staging where necessary (Ground floor).[Excluding cost of chipping over concrete surface] (i) With 1:6 cement mortar (b) 20 mm thick plaster

Plaster (to wall, floor, ceiling etc.) with sand and cement mortar including rounding off or chamfering corners as directed and raking out joints including throating, nosing and drip course, scaffolding/staging where necessary (Ground floor).[Excluding cost of chipping over concrete surface] (i) With 1:6 cement mortar (b) 15 mm thick plaster

M.S. structural works with hollow sections (square or rectangular shape) conforming to IS: 806-1968 & IS:1161-1998) connected to one another with bracket, gusset, cleat as per design, drawing & direction of Engineer-in- Charge complete including cutting to requisite shape & size, fabrication including metal arc welding conforming to IS: 816-1969 & IS: 9595 using electrodes of approved make and brand conforming to IS:814- 2004, haulage, hoisting and erection all complete. The rate includes the cost of all M.S. Hollow section, all consumables such as electrodes, gas and hire charges of all tools and plants and labour reqired for execution and allincidental chages (such as electricity, labour insurance) etc. complete. Payment to be made on the basis of calculated weight of structural memebrs of MS Holow Section as specified in relevent IS code in finished work. Payment for gusset, bracket, cleat may be made by adding the actual weight of such items with weight of finished tructural members. The rates are considered for a hight of erection 8 m. / 2nd floor level from the ground. Add 1.5 % extra over the rate for each additional floor or 4m. beyond the initial 8 m. or part thereof. i) For roof truss works a) Span up to 12 Mtr

Supplying, fitting & fixing Zn-Al alloy (55% Al & 45% Zn) coating of 150 grams per sq. metre (followed by colour coated on both side) steel sheet work having minimum yield strength of 550 Mpa of trapizoidal profile of approved make (excluding the supporting frame work) fitted and fixed with 55 mm & 25 mm self tapping screw, EPDM Washer 16 mm dia & 3 mm th. washer etc. complete with 150 mm end lap and one corrugation minimum side lap. (Payment to be made on area of finished work).

Add @18% for GST for item (1-39)

Add @1% for Cess for item (1-40)