Additional estimate for Construction of Sharda H.S School at Mungpoo under R.R. Block, G.T.A

Earth work in excavation of foundation trenches or drains in all sorts of soil (including mixed soil but excluding laterite or sand stone) including removing, spreading or stacking the spoils within a lead of 75m. as directed. The item includes necessary trimming the sides of trenches, levelling, dressing and ramming the bottom, bailing out water as required complete. Siliguri .(a) Depth of excavation not exceeding 1.500 mm.

(II)Ordinary Cement concrete with 20 mm. down graded shingles excluding shuttering.In ground floor or foundation(b) N.B. veriety (a) 1:2:4 proportion

Reinforcement for reinforced concrete work in all sorts of structures including distribution bars, stirrups, binders etc. initial straightening and removal of loose rust (if necessary), cutting to requisite length, hooking and bending to correct shape, placing in proper position and binding with 16 gauge black annealed wire at inter-section, complete as per drawing and direction.(a) For works in foundation, basement and up to roof of ground floor/up to 4m. Tor steel/Mild steel.SAIL/ TATA/RINL

Hire and labour charge for shuttering with centreing and necessary staging up to 4 m. using approved stout props and thick hard wood planks of approved thick ness with required bracing for concrete slabs, beams,columns, lintels curved or staight including fitting fixing and striking out after complection of works. (up to roof of ground floor). (a) 25mmto30mm thick wooden shuttering as per decision & direction of the Engineer-in -charge.

M.S. structural works in roof trusses with tubular sections conforming to IS: 806-1968 & IS: 1161- 1998 cnnected to one another with bracket, gusset cleats as per design, direction of Engineer-in-charge complete including cutting to requisite size, fabrication with necessary 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 rolled steel section, consumables suchas electrodes, gas and hire charge of all tools and plants and labour reqired for the work including all incidental chages such as electricity charges, labour insurance charges etc. Payment to be made on the basis of calculated weight of structural tubular memebrs as specified in relevent IS i) For trusses spanning up to 12.00 m

Supplying fitting and fixing circular corrugated Aluminiumsheet 9excluding the supporting frame work of approved make brand …all complete in roof

125 mm thick brick work with 1st class brick's in Cement mortar (4:1) in ground floor.

Wood work in door and window frame fitted and fixed in position complete including a protective coat of painting at the contact surface of the frame excluding cost of concrete, Iron Butt Hinges and M.S clamps. (The quantum should be corrected up to three decimals). ( c) Sal : siliguri

Supplying of solid flush type doors of deluxe decorative quality, conforming to IS 2202 timber frame consisting …. 35mm thick shutters

Supplying, fitting and fixing windows and ventilators with or withoutintegrated grills conforming to IS 1038-1975 and manufactured fromrolled steel sections conforming to IS 7452-1974 with non-frictionprojecting type, box type hinges, glazing clips, lugs locking bracket,handle plate etc, including hoisting in position, straightening ifrequired, fixing lugs in cement concrete ( 1:2:4) with stone chips 20mm down cutting holes and mending good damages to match withexisting surface complete in all respect excluding glazing.(Add extra @ 1.2 % for each additional floors upto 4th floor and @1.5% for each addl. Floor above 4th floor.)In Ground floorFlash butt welded windows and ventilators(No shop priming will be allowed to facilitate inspection ofworkmanship)Without integrated grill (b) Openable steel windows as per IS sizes with side hung shuttersand horizotal glazing bars. [The extra rate admissible for theopenable portion only]