West Bengal Electronics Industry Development Corporation Limited Tender
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West Bengal Electronics Industry Development Corporation Limited - WEBEL Tender
Civil And Construction
Building Construction
Eprocure
Opening Date15 Jan 2024
Closing Date15 Feb 2024
Tender Amount₹ 44,18,000
Costs
EMD
₹ 88,400Document Cost
₹ 500Tender Fee
Refer Documents
Summary
Webel 07 Idm Fujisoft Repair 2023 24 20
Description
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Contact
Tender Id
2024_WEBEL_646593_1Bid Award Id
ViewTender No
Webel/07/IDM/Fujisoft/Repair/ 2023-24/20Tender Authority
West Bengal Electronics Industry Development Corporation Limited ViewPurchaser Address
-Website
http://https://wbtenders.gov.in/
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Documents
BOQ Items
Chipping of unsound/weak concrete material from slabs, beams,columns etc with manual Chisel and/or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of Engineer-in-charge.
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26.28.1 75mm average thickness
60
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26.28.2 50mm average thickness
170
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26.28.3 25mm average thickness
90
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Reinforcement cleaning , rust removal & anti-corrosive treatment
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Cleaning the exposed reinforcement preferably upto full diameter by wire brush, applying two coats of polymer based rust removing compound left for 24 hours, removing the coating and then applying two (2) coats of polymer modified anti corrosive protective coating formulated to inhibit the corrosion of reinforcement as per manufacturer's specification] [Mode of measurement:The affected surface area of reinforcement shall be considered for payment]
320
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Additional Reinforcement
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Providing and Fixing of new reinforcement of various diameter as required at site and lapping, welding,suitably to old reinforcment - Tor Steel/Mild Steel(SAIL/TATA/RINL)
0.5
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Bond Coat
-
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Applying epoxy based reactive joining agent for joining the old concrete with fresh concrete to be applied within manufacturer's specified time as per manufacturers specification. (0.4 Kg / m² of concrete surface).
320
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Applying 2 coats of Non-Toxic Acrylic Polymer modified Paint having
adhesive & waterproofing properties by mixing in proportion (1 liquid: 4
cementitious material) or as per manufacturer's specification for water
proofing layer in water tank etc.
200
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-
Reinstate of new concrete
-
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Polymer concrete made with water resistant bonding agent of synthetic
rubber emulsion as per manufacturer's specification excluding the cost of
cement concrete (2.75 Kg / bag of cement)
Note : Payment on volume of (1 : 1½ : 3) Concrete.
2
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-
Providing and laying of ploymer modified single component , alkaline resistant fibre reinforced, thixotropic, cementitious patch repair mortar that achieves compressive strength 20Mpa at 1 day & 45Mpa at 28 days , tensile strength 7 Mpa at 28 days. Finishing the same carefully with trowel compacting the same around rebars and finishing to bring it in line with existing concrete surface on the beams, slabs, piles etc where the thickness of application is average 30mm in patches as per specification after applying bonding coat. Item rate is inclusive of materials all labour, tools and tackles, scaffolding and transportation etc complete as directed by Engg-in-charge.
320
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Crack Repair
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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)
2
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Providing and applying crystalline mortar by mixing in the ratio of 4.5
: 1 (4.5 parts crystalline mortar : 1 part water) for the treatment of faulty construction joints, cracks, tie rod holes and spalled & honeycombed surface of RCC underground structures like basement, water tanks, bridge deck etc. to ensure water tightness. The crystallie mortar shall conform to the EN 1504-3 having compressive strength Class R4 45 MPa and adhesive bond strength Class R3 1.5 MPa. The work shall be carried out all complete as per specification and the direction of the Engineer-In-Charge. The product performance shall carry guarantee for 10 years against any leakage.
-
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For sealing cracks and faulty construction joints, routed out/making U-shape groove size 25x25mm and then primed the area with integral crystalline slurry @0.05kg/ running metre and while the surface is tacky filled the groove upto surface with crystalline mortar @1.50kg/running metre. Once crystalline mortar is touch dry thenfinally applied two coats of integral crystalline slurry
@0.05kg/running metre per coat.
200
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Injection Grouting
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Providing and inserting 12mm dia galvanised steel injection nipple in
honey comb area and along crack line including drilling of holes of
required diametre (20mm to 30mm) up to depth from 30mm to 150mm at required spacing and making the hole & crack dust free by blowing
compressed air, sealing the distance between injection nipple with
adhesive chemical of approved make and allow it to cure complete
as per direction of Engineer-In-Charge.
600
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Providing and injecting approved grout in proportion recommended
by the manufacturer into cracks/honey-comb area of concrete/
masonry by suitable gun/pump at required pressure including cutting
of nipples after curing etc. complete as per directions of Engineer-in-
Charge. (The payment shall be made on the basis of actual weight of approved grout injected.)
-
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Stirrer mixed Acrylic Polymer of approved make @ 2% of weight of cement used) modified Cement slurry made with non shrink compound in concrete/RCC work
800
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Protective Plaster
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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.
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With 1: 6 Cement Mortar
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20mm thick plaster
95
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15mm thick plaster
160
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With 1: 4 Cement Mortar
-
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10mm thick plaster
65
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Extra rate for using integral water proofing compound @ 0.5-2% by weight of cement (or at manufacturer's specified rate) for plaster/concrete.
150
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Plaster Removal & Surface preparation
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Dismantling/Removal of old/existing plaster or skirting, raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.
260
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Raking of Brick Joints & Bond coat
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Cutting the brick joints by suitable means , cleaning, application of one bond coat of single component acrylic polymer emulsionas per manufacturere's recommendation & raking the joints with cement sand mortar admixed with single component acrylic polymer emulsion @5-10%by weight of cement
260
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Waterproof courses
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Application of two coats of two component acrylic polymer modified cementitious coating as per manufacturer's recommendation by brush in perpendicular direction maintaining an interval of 4-6 hours between the coats.Sprinkle dry coarse sand on the above second coat applied surfaces till the coating is in tacky condition to provide techanical key to the protective plaster.
260
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Protective Plaster
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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.
-
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With 1: 6 Cement Mortar
-
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20mm thick plaster
80
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15mm thick plaster
120
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With 1: 4 Cement Mortar
-
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10mm thick plaster
60
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Extra rate for using integral water proofing compound @ 0.5-2% by weight of cement (or at manufacturer's specified rate) for plaster/concrete.
120
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Removal of layers
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Dismantling all types of masonry, roof tiles excepting cement concrete plain or reinforced, stacking serviceable materials at site and removing rubbish as directed within a lead of 75 m.
5
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Dismantling all types of plain cement concrete works, stacking serviceable materials at site and removing rubbish as directed within a lead of 75 m.
5
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Surface preparation
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Cleaning the concrete surface by removing dirt and debris, marking defective
locations and removing loose concrete by careful stripping untill hard surface
is exposed, cutting the concrete to regular shape, wire brushing the exposed
surface and removing debris from site complete as per direction of the
Engineer - in - Charge.
650
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Coving
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Coving at all the junctions to be done for a size of 50mm X 50mm with polymer modified mortar prepared by mixing single component acrylic polymer emulsion @ 3% ( or as per manufacturer recommendation)by weight of cement with the cement mortar of 1:2:4. Before laying of mortar a bond coat of single component acrylic polymer emulsion and cement shall be provided all along the peripheral junction.
150
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Crack Repair
-
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Providing and applying crystalline mortar by mixing in the ratio of 4.5
: 1 (4.5 parts crystalline mortar : 1 part water) for the treatment of faulty construction joints, cracks, tie rod holes and spalled & honeycombed surface of RCC underground structures like basement, water tanks, bridge deck etc. to ensure water tightness. The crystallie mortar shall conform to the EN 1504-3 having compressive strength Class R4 45 MPa and adhesive bond strength Class R3 1.5 MPa. The work shall be carried out all complete as per specification and the direction of the Engineer-In-Charge. The product performance shall carry guarantee for 10 years against any leakage.
-
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For sealing cracks and faulty construction joints, routed out/making U-shape groove size 25x25mm and then primed the area with integral crystalline slurry @0.05kg/ running metre and while the surface is tacky filled the groove upto surface with crystalline mortar @1.50kg/running metre. Once crystalline mortar is touch dry thenfinally applied two coats of integral crystalline slurry
@0.05kg/running metre per coat.
100
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Primer & waterproofing
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Providing and carry out waterproofing treatment to sound, moisture free concrete surface using Liquid applied single component pitch free polyurethane coating capable of bridging substrate cracks up to 2 mm which supplied in 25 kg drum. coverage @ 2.0 kg/m2 in 1.5 mm thickness in two coats cured material shall be having crack bridging of 2 mm, Elongation (ASTMD 412) – 600 %, Tensile Strength (ASTM D412) – 2.5
N/mm2,Adhesion in-peel test (N) (ASTM C836) is 50N; Tear resistance (kN/m) (ASTM D624-00 ) is 15 ; Water vapour transmission 2.3mm film
(g/m2/hr) is 0.6 ; Initial hardness (Shore A) (ASTM 2240) is 60 ; Water permeability@ 5 bar, mm (BSEN 12390) is NIL; Chemical resistance-
Unaffected by mild acids, alkalis and water borne salts. Does not biodegrade. Crack bridging C836- 95 is 2mm. Service Temperature – -40°C to
70°C, Flash Point 56 °C, Viscosity- 50 to100 P, Specific Gravity-1.50 + 0.1; Solids content (%): 85 Minimum
650
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Seperation Layer
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Providing and laying, fixing of 120GSM Geotextile mesh on coated surface with 100mm overlap as per Manufacturer's specifications along with necessary overlaps etc.
585
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Protection layer (Horizontal surfaces)
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Protect the surface of the PU coating with avg 50mm thick concrete screed on treated waterproof area, in 2m x 2m panel (admixed with integral waterproofing compound ) in required slope and thickness.
585
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Protection layer (Vertical surfaces)
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Laying of protective cement plaster on vertical wall of minimum 20mm thick (1:4) by mixing waterproofing admixture FOSROC Conplast WL, including all material, surface preparation, all complete over the waterproof surface.
165
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Toil waterproofing by cutting the jointsby grinder, cleaning with air blower, protection of sides with masking tape ob both edges and filling the joints with Epoxy tile grout by gun application , levelling and finishing as per direction of E-I-C in line with Manufacturer's recommendation
8
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Providing and applying Elastomeric & Decorative acrylic waterproofing coating of FOSROC, Nitocote Wallguard Specific Gravity: 1.29; longation(110 micron DFT) : 100%;Breathability : 22 gm/m2/day; Tensile strength @250micron : 2.0N/mm2; Crack bridging ability : Passes 0.5mm width; Adhesion strength:1.3N/mm2; Coating thickness, DFT in two coats : 110 micron
1500
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Scaffolding & coverings
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Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after .The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and approval of Engineerin-charge .The elevational area of the scaffolding shall be measuredfor payment purpose .The payment will be made once irrespective ofduration of scaffolding.
1500
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Temporary support
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Providing, fabricating & erecting temporary supports to the structural members like beams, slabs etc. to relieve the load on the members materials, all labour, supervision, tools and tackles and transportation etc., complete as per specification and as directed.during breaking of damaged concrete. These
supports shall be provided either in the form of props or trestles fabricated using structural steel as per the requirement and as per the instruction of EIC/Consultant. Item rate is inclusive of the materials, all labour, supervision, tools and tackles and transportation etc., complete as per specification and as directed.
25
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Disposal of Debris
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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
80
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Scraping of moss, blisters etc.thoroughly from interior/exterior surface of walls necessitating the use of scraper, wire brush etc. including stagging(Payment against this item will be made only when this has been done on the specific direction of the Engineer-in-charge)
400
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Rendering the surface of walls and ceiling, beams with white cement based wall putty WATER PROOF of approved make and brand(1.5mm thick) as directed by EIC in plumb line and level including preparation of base with all labour and materials. Specific approval to be taken before execution.
600
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Applying Interior grade Acrylic Primer of approved quality and brand on plastered or cencrete surface old or new surface to receive Distemper/ Acrylic emulsion paint including scraping and preparing the surface throughly, complete as per manufacturer's specification and as per direction of the EIC. (In Ground Floor)
-
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(a) Two Coat
65
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Providing and applying 1st quality acrylic emulsion paint having low VOC of approved shade to interior walls, ceiling, beams, etc (two coat or more coats to achieve even shade) over and including a Two coat of cement primer of approved quality (as per manufacturer's specification) including cleaning, smoothening and repairing the putty surface where ever required thoroughly, scaffolding etc complete with all labour and materials in all floors. As direction of EIC
500
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