External repairing of the Water Works Office and Laboratory Building at DPL Water Works.

Amount

Earth work in excavation of foundation trenches or drains, in all sorts of soil (including mixed soil but excluding laterite or sandstone) including removing, spreading or tacking the spoils within a lead of 75 m. as directed. The item includes necessary trimming the sides of trenches, leveling, dressing and ramming the bottom, bailing out water as required complete; Depth of excavation not exceeding 1,500 mm.

Earth work in filling in foundation trenches or plinth with good earth, in layers not exceeding 150 mm. including watering and ramming etc. layer by layer complete. (Payment to be made on the basis of measurement of finished quantity of work); With earth obtained from excavation of foundation.

a. 250 mm thick Brick work with Fly Ash Bricks (250 mm x 125 mm x 75 mm) as per IS 12894:2002 in cement mortar (1:4). a) In superstructure, ground floor.

b.125 mm. thick Fly ash brick work as per IS 12894:2002 in cement mortar (1:4) in ground floor.

c. Single Brick Flat Soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with local sand.

d. Dismantling all types of masonry excepting cement concrete plain or reinforced, stacking serviceable materials at site and removing rubbish as directed within a lead of 75 m. In ground floor including roof.

e) Dismantling carefully terraced floor only (including floor finish if any) or lime terracing in ground floor roof and removing rubbish as directed within a lead of 75 m.

f) Removal of rubbish, earth etc. from the working site and disposal of the same beyond the compound, in conformity with the Municipal / Corporation Rules for such disposal, loading into truck and cleaning the site in all respect as per direction of Engineer in charge.

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.[Excluding cost of chipping over concrete surface]. In ground floor.

a. 20mm thick plaster 4:1

b. 15mm thick plaster 4:1

c. Stripping off worn out plaster and raking out joints of walls, ceilings etc. up to any height and in any floor including removing rubbish within a lead of 75m as directed.

a. Cement concrete with graded stone ballast (40 mm size excluding shuttering) In ground floor [Pakur Variety] (1:3:6).

b. Ordinary Cement concrete (mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement, if any, as per relevant IS codes.Pakur Variety.

c) Ordinary Cement concrete (mix 1:1.5:3) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement if any, in ground floor as per relevant IS codes. Pakur Variety.

d) Dismantling all types of plain cement concrete works, stacking serviceable materials at site and removing rubbish as directed within a lead of 75 m In ground floor including roof. up to 150 mm. thick.

e) Dismantling R.C. floor, roof, beams etc. including cutting rods and removing rubbish as directed within a lead of 75 m. including stacking of steel bars. (a) In ground floor including roof.

Applying epoxy based reactive joining agent for joining the old concrete with fresh concrete to be applied within manufacturer's specified time as per manufacturer’s specification. (0.4 Kg / m² of concrete surface). Note: Applicable only when the full diameter of reinforcement steel is exposed.

Applying 2 coats of bonding agent with synthetic multi-functional rubber emulsion having adhesive and water proofing properties by mixing with water in proportion (1 bonding agent : 4 water : 6 cement) as per Manufacturer's specification.

Neat cement punning about 1.5mm thick in wall, dado, window sill, floor etc. NOTE: Cement 0.152 cu. M. per100 sq. m.

Repairing crack in wall by cement grouting (1 : 2) including widening the crack on the surface (into V section) cleaning and packing the same with cement mortar (1 : 2) and finishing off to match with adjacent surface. (Cement-69 Kg/100 m).

Hire and labour charges for shuttering with centering and necessary staging up to 4 m using approved stout props and thick hard wood planks of approved thickness with required bracing for concrete slabs, beams and columns, lintels curved or straight including fitting, fixing and striking out after completion of works (up to roof of ground floor).

a) Steel shuttering or 9 to 12 mm thick approved quality ply board shuttering in any concrete work (i) Up to roof of ground floor

(ii) 1st floor

b) 25 mm to 30 mm shuttering without staging in foundation

c) Extra for staging beyond 4 m in any floor (Mode of measurement: area in plan x mean height of staging up to soffit of shuttering above initial 4 m).

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 every intersection, complete as per drawing and direction; For works in foundation, basement and up to roof of ground floor/up to 4 m; Tor steel/Mild Steel

Supplying & laying 3mm thick pre-fabricated plastomeric water proofing membrane conforming to EN 12311-1 & ASTMD 5147, manufactured with atactic poly propylene (APP) modified premium grade asphalt , specially reinforced with non-woven polyester core with polyester reinforcement @160 gms per sqm & both faces covered with thermo-fusible polyethylene film /Mineral on top face over a coat of primer @ 0.40 lit/sqm of manufacturer's specification on smooth, clean dry surface prepared wherever required. Lap joint shall be provided of 75 mm in longitudinal & 100 mm in transverse direction and fused using LPG/ Propane torch employing extra care ensuring full bondage, complete removal of entrapped air and sealing edges into grooves in appropriate manner as per direction of Engineer -in-charge all complete including materials, labour and applicable taxes. (Payment shall be made on the basis of finished surface area.).Membrane Property: Softening Point > 150 deg C, Cold Flexibility < -6 deg C, Tensile Strength, N/cm : 600 (longitudinal), 450 (transverse), Tearing Strength, N: 300 (longitudinal), 200 (transverse).

Supplying, fitting and fixing of Aluminium Alloy Extrusions conforming to IS: 732-1983 and IS: 1285- 1975, 15 Micron colour anodizing, 5mm thick coloured / tinted / smoke bubble free float glass 3 track sliding windows including all complete in all respect as per drawing, specification and direction of EIC.

M.S.or W.I. Ornamental grill of approved design joints continuously welded with M.S, W.I. Flats and bars of windows, railing etc. fitted and fixed with necessary screws and lugs in ground floor. Grill weighing above 16 Kg./sq.mtr and above.

M.S. gate of Jail type as per approved design made of strong M.S. frame work, intermediate stiffeners and round / square bars or angles. M.S. sheet (not less than 14 gauge) gussets, cleats etc. including necessary riveting, bolting, welding, locking and hanging arrangements, fitting and fixing complete as per direction of the Engineer-in -charge. In ground floor.

Painting with best quality synthetic enamel paint of approved make and brand including smoothening surface by sand papering etc. including using of approved putty etc. on the surface, if necessary :

i) On metal surface With super gloss (hi-gloss) Two coats (with any shade except white).

ii) On wooden surface With super gloss (hi-gloss) Two coats (with any shade except white)

iii)Priming one coat on steel or other metal surface with synthetic oil bound primer of approved quality including smoothening surfaces by sand papering etc.

iv)Priming one coat on timber or plastered surface with synthetic oil bound primer of approved quality including smoothening surfaces by sand papering etc.

Removing loose scales blisters etc. from old painted surface and thoroughly smoothening the surface to make the same suitable for receiving fresh coat of paint.

Applying Exterior grade Acrylic primer of approved quality and brand on plastered or concrete surface old or new surface to receive decorative textured (matt finish) or smooth finish acrylic exterior emulsion paint including scraping and preparing the surface thoroughly, complete as per manufacturer's specification and as per direction of the EIC. In Ground Floor: One Coat

Protective and Decorative Acrylic exterior emulsion paint of approved quality, as per manufacturer's specification and as per direction of Engineer-in-Charge to be applied over acrylic primer as required. The rate includes cost of material, labour, scaffolding and all incidental charges but excluding the cost of primer. Super protective 100 % Acrylic Emulsion.In Ground floor.

Scraping of moss, blisters etc. thoroughly from exterior surface of walls necessitating the use of scraper, wire brush etc.(Payment against this item will be made only when this has been done on the specific direction of the Engineer-in-charge).

White washing including cleaning and smoothening surface thoroughly; All floors; Two coats (to be done on specific instruction).

Removing old scales, blisters etc. of interior surface of walls, ceiling by scraping etc. and preparing smooth and even surface with rendering or cement mortar (1:2) (as necessary), to make the surface suitable for receiving distemper. (Payment against this item will be made only when this has been done on the specific direction of the Engineer-in-charge).

Uprooting and removing plants from the surface of walls parapet etc. and making good damages. Repairing of damages to be paid separately.

Supplying best Indian sheet glass panes set in putty and fitted and fixed with nails and putty complete. (In all floors for internal wall & up to 6 m height for external wall) 3 mm thick (weighing 7.4 kg/ Sqm).

Making one set of scaffolding only for replacing glass panels, painting, uprooting plant and another repairing works of building and S&P works for external works only with 10 cm. dia. bamboo as main posts at the rate of 1 meter center to center and 7.5 cm. dia. bamboo ties @ 0.75 meter apart fitting and fixing with necessary coir, nails etc. as per direction of the Engineer-in charge. (This item should be executed only after prior approval of the Engineer-in charge). Firstly, one number to be paid and then labour rate for shifting up to further nineteenth (19) times @ 10% each time to be considered. If necessary further after twenty times of total use, another one number new and labour rate for shifting to be considered accordingly.

i) a) 3.90 meter height

b) Extra for additional 3.6 height or part thereof

ii) Labour rate for shifting.

a) 3.90 meter height

b) Extra for additional 3.6 height or part thereof

A) Supply of UPVC pipes (B Type) & fittings conforming to IS-13592-1992 (i) Single Socketed 3 Meter Length (a) 110 mm

B) Labour for fitting and fixing U.P.V.C. pipes for above ground work including cost of jointing materials etc. fitting and fixing all necessary specials, cutting pipes, cutting holes in walls or R.C. floor where necessary and mending good all damages excluding the cost of masonry or concrete work, if necessary, but including the cost and fitting and fixing holder bat clamps (any floor) or for underground work including cutting trenches up to 1.5 meter and refilling the same complete as per direction of the Engineer-in-charge. (Payment will be made on center line measurement of the total pipeline including specials.

(A) Above ground (i) 110 mm dia.

Supply of UPVC pipes (B Type) & fittings conforming to IS-13592-1992.

(i) Door Tee 110mm

(ii) Bend 87.5º; 110 mm

(iii) Vent Cowl 110 mm

Shree Krishna Traders (BID ID -6826466)

M/S. CHATTERJEE ENTERPRISE (BID ID -6824256)

DIPAK CONSTRUCTION (BID ID -6840881)