ADDITIONS AND ALTERATIONS TO NAI (TRICHY) BUILDING NO P-216 UNDER GE WELLINGTON

Surface excavation not exceeding 30cm deep and averaging 15 cm deep and getting out in hard/ dense soil complete all as specified and directed.

Hardcore of gauge exceeding 63 but not exceeding 100mm of broken granite stone or bolders, deposited, spread and levelled in layers not exceeding 15 cm thick, watered and rammed to a true surface all as specified and directed.

75mm thick plain Cement concrete, 1:3:6, type C-2 using 40 mm graded stone aggregate as in plinth protection, hardstanding/ path and finished even and smooth without using extra cement complete all as specified and directed.

Anti Termite treatment to soil under plinth protection at the rate of 5 litres of emulsion per square meter of surface area complete all as specified and directed.

Anti Termite treatment to soil along with external perimeter of building at the rate of 2.25 litres of emulsion per square meter of perimeter wall complete all as specified and directed.

Gl frame work Size of grid 605 x 605mm for seamless ceiling comprising of Gl perimeter channnel 0.55 mm thick with two unequal flanges of 20 and 30 mm and web of 27 mm fixed to surrounding wall using nylon sleeves and screws at 450 mm centre to centre/intermediate channel 0.9 mm thick having two equal flanges of 15 mm each and web of 45 mm suspended from soffit at approx 900 mm centre to centre with Gl cleat and steel expansion fasteners with and including ceiling section (not exc 1.2 m length) of 0.55 mm thickness having kurled web of 50 mm and flange of 26 mm each with lips of 10.5 mm fixed to the intermediate channel with connecting clips across the intermediate channel at 457 mm centre to centre complete all as specified and as directed.

Hangers 6mm dia G.I (upto 1200mm length) adjusting level fixed to roof slabs by means of ceiling cleats made out of G.I flat 40 x 3mm size 60mm long and expansion hold fasteners 12.5mm dia 40mm long complete all as specified and directed.

Providing and fixing gypsum board 12mm thick in ceiling fixed with screw as per manufacturer's instructions all as specified and as directed

Applying two coats of distemper oil emulsion on ceilings over priming surfaces with alkali resistant priming paint including preparation of new surfaces complete all as specified and as directed.

Providing and fixing Semi perforated 12mm thick micro tegular edged false ceiling tiles with GRG (Glass Fibre with semi, with fully Reinforced Gypsum) false ceiling tiles of Size 595 x 595 mm of approved texture, design and patterns having moisture content less than 2%, humidity resistance of 99%, NRC0.50 to 0.75 as per IS false ceiling GRG false ceiling 8225:1987, Noncombustible as per BS tiles tiles 4 76 (part 4 )-1970 and light reflectance of 85% (minimum) to be laid in true horizontal level suspended with and including false ceiling grid on interlocking metal T-Grid of hot dipped galvanized iron section of 0.33mm thick (galvanized @ 120 grams per sqm including both sides) comprising of main- T runners of size 15 x 32 mm of length 3000mm,cross-T of size 15x 32mm of length 1200mm and secondary intermediate cross-T of size 15 x 32 mm of length 600mm to form grid module of s1ze 600x 600mm, suspended from ceiling using galvanized mild steel items (galvanizing @ 80 grams per sqm) i.e 50mm long, 8mm outer diameter M-6 dash fasteners, 6mm dia fully threaded hanger rod upto 1000mm length and Lshape level adjuster of size 85x25x2mm. Galvanised iron perimeter wall angle of size 24x 24x0.40mm of length 3000 mm to be fixed on periphery wall I partition with the help of plastic rawl plugs at 450 mm center to center and 40mm long dry wall wood screws. The work shall be carried out as per specifications, drawing and as per directions.