Military Engineer Services-MES has published Tender For Addition Alteration And Special Repairs Of Hangar Door And Allied Works Of Hangar At Goa. Submission Date for this Tender is 31-05-2024. Door Tenders in South Goa Goa. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 29-Apr-2024 | 83048AMDTTODATES1 | Date | 20-05-2024 |
| 2 | 10-May-2024 | 83048AMDTTODATES2 | Date | 31-05-2024 |
| FileName | File Description | File Size |
| 6099f6f0-caaf-40a4-95b3-1264c38a3d02.html | Tender Notice | 0 KB |
| 83048TENDERPAGES.pdf | Tender Document | 0 KB |
| BOQ_726905.xls | Tender Document | 0 KB |
| Tendernotice_1.pdf | Tender Document | 0 KB |
| Sl. No. | Item Description |
| 1 | Dismantling and taking down Hangar doors/ gates including top tracks and bottom tracks but excluding supporting framed truss in existing Hangar of following description (i) Six equal leaves on front side opening (size of opening 24380 x 7920mm aprox) covered by three equal sliding leaves on each direction (ii) Two equal leaves on rear side door (Opening size 5360 x 2620mm aprox) Note: (a) Removing/ Dismantling of Hanger doorsshall be done in such a way that the rest of Hangar structure and flooring/ dispersal shall be intact and safe. Any of the disturbance/ deformity occured in Hangar structure and flooring shall be contractor"s liability and contractor will have to make it good without any extra cost. (b) Suitable support and scaffolding etc to the framed truss & structure to be provided during the work. (c) All leavesand top/ bootom tracks etc dismantled/ taken down shall become contractor"s property and credit as given in Schedule of credit shall be recovered. |
| 2 | Design , manufacture, fabrication , supply , erection andinstallation, testing and commissioning ofhangar doors as per following description: (i) BidirectionalTelescopic sliding hangardoors with six leaves (Three equal leaves sliding on each side) on front side of hangar. (Clear size of opening 24380 x 7920mm height) (ii) Rear side door with single track and two leaves bi parting outrigger sliding door (clear size of opening 5360 x 2620mm height) The work has to be executed as per following specifications and requirements including necessary civil works and the design/ drawingsof the sliding doors scheme shall be got vetted from NIT/IITand got approved from the Accepting Officer. |
| 3 | (A) TECHNICAL SPECIFICATION OF HANGAR DOOR: Front side Telescopic Hangar Door :- Clear Width 24380mm Clear Height 7920mm Western end Door (rear side) Clear Width 5360mm Clear Height 2620mm (i) Door Configuration: When the door is operated for either OPEN or CLOSE positions, individual leaf shall start and move to the parking bay or close position.Each leaf should be operatable independently. (ii) Pass door / Pedestrian door/ Wicket door01 Nos per Door. A pass door / wicket door shall be provided of approximate size 1000mm x 2100mm to enable personal access for front side hangar door .Personal door shall be provided with safety sensor system to prevent Hangar Door leaf operation when personal door is open. The pass door cladding shallsame as the the door-leaf cladding. (III) All structural parts of doors shall be painted with zinc chrome/ Epoxy primer with two coats of Epoxy anti corrosive paint and covered with pre painted 0.5mm thickness galvalume aluminum zinc coated GI based corrugated steel sheets of approved colour having tensile strength of 550 Mpa at outer facia of hangar door leafs . The doors shall be designed & installed with suitable number of wheel assemblies confirming to IS; 3177 consisting of forged and machined wheels with permanently lubricated sealed type bearings, axiles/ shafts, breakers, grease nipples, removable cover plates and necessary IRS rail / bright bar square rail laid alongwith suitable embedment arrangement (ISMB / ISMC) to maintain the uniform level throught the length of rail as required and completely covered the clear opening from all around. |
| 4 | (B) DOOR DESIGN & CONSTRUCTION: (i) Wind Pressure:Door leaves and tracks to be designed to withstand maximum forces for wind load, as per seismic zone and cyclone intensity of Vasco-da-Gama, Goa Area local wind pressures which are calculated in accordance with IS 875 Part 3 (ii) Structural Design :Major structural elements of the sliding door system shall be designed in accordance with IS 800: 2007 “Code of practice for general construction in steel. (iii) Door leaf construction: Main structural members of the door leaf to be fabricated from hot rolled Universal Beam sections in accordance with EN 10210 Part2: 2006 to minimum Grade S275 in accordance with EN 10025: 2004 and EN 10210 Part 1: 1994 or equivalent standard. The structure shall be braced with suitable dia. MS Round pipe & enitre external face of the door is covered with 0.5mm precoated corrugated galvalume sheet(Total painted thickness). (C) BUILDING DEFLECTIONS :The track and top roller assembly of sliding door are coordinated such that the roller can also support itself whilst moving along the track and top tracks are able to accommodate live load deflections. The track and top roller assembly are coordinated such that the roller can also support itself while moving along the track (against its own dead weight and wind loads).The top track system shall be designed to limit the inclination of the door leaves due to: discontinuity of bottom rail, high friction of bottom rail, blockage of bottom rail. (D)PROTECTIVE COATING TO STRUCTURAL STEEL MEMBERS:All MS structural steel members of the sliding door shall be coated with two coats of epoxy paint over one coat of epoxy primer after sand blasting. Thickness of two coats ofepoxy paint shall be minimum 60-80 microns and thickness of epoxy primer shall be 25-40 microns .Total coating thicknessminimum 100 microns . |
| 5 | (E) DOOR CLADDING SYSTEM : The entire external face of the door is covered with principal cladding of 0.5mm thick precoated corrugated galvalume cladding sheet with standard finish (Total painted thickness)(F)DOOR SEALS:All seals are designed to resist draught and dust. All vertical joints between leaves on adjacent tracks and the two end jambs are fitted with single EPDM wiper seals set in aluminium extrusions. At the jambs, suitable members are to be provided by others against which these seals mate. - Weather seals shall be secured using zinc-plated mild steel self-tapping or self-drilling screws. (G) BOTTOM WHEELS AND BOTTOM TRACKS: - Each leaf is supported at the bottom on 2 Nos. heavy duty double-flanged steel track wheels. Wheels to be made up of high quality steel ST 52-3. Housing of wheels shall be of high quality steel confirming to ST 52-3/FE 540 WHT. (H) HARDWARE - (i) BOTTOM OF DOOR: Each door leaf is to be supported at the bottom on suitable nos. of steel track wheels of suitable diameter as per design requirement arranged so that both horizontal and vertical loads shall be transferred to the rail only through the bearing. Grease points are to be provided for wheel bearings. Bottom rails shall be CR 50 rail |
| 6 | (ii) TOP OF DOOR: for both side door The top track section itself shall be a suitable UB/ ISMB Section as per design requirement which is hot-formed steel in accordance with EN 10025: 2004 or equivalent. The top track section shall be designed to accommodate all loads imposed upon it. Furthermore,local buckling of the section due to maximum roller loads on the walls of the section shall not be permitted.Each panel supported at top with suitable diameter. top roller assembly & will have suitable Nos of top rollers. Roller shall be inherently corrosion resistant (i.e. Zinc plated Mild steel) and mounted on low friction/sealed bearings which will require no regular lubrication.(iii) BUFFERS: Heavy duty energy absorbing buffer stops are to be fitted at the extremities of the bottom tracks to prevent leaves over-running theends of their tracks during towing / manual mode operation. These are to be designed to eliminate any trip hazard that might otherwise occur. At the end of Top tracks mechanical stoppers are provided. (J) SAFETY GUARD.Each leaf shall be provided with suitable nos of cleats at Top & Bottom designed of suitable dimension which shall be capable of withstanding the weight of the door including incase rollers become free/ fails /break then door shall not fall from its rails.(K) All ball bearings to be of SKF/KOYO/WACNI (L) Quoted rate shall be deemed to be inclusive of supportingtop and bottom rails and their integration with existing structure, hangar gates , E/M works and rail on which the hangar gate moves and painting of entire door with epoxy paint of approved shade over epoxy primer. vetted from NIT/IIT . carrying out maintenance and repairing of hangar door during defect liability period of 03 years from the certified date of completion of work. (M) Suitabe drainage arrangement shall be provided to bottom tracks so that no rainwater accumulates on bottom tracks. (N) The floor damage while taking out old tracks shall be made good as per existing flooring while fixing new tracks and rate quoted shall be inclusive of this provision. |
| 7 | Design, Supplying, installing, testing and commissioning of Hanger Door Automation system forfront side Hangar door with the following specification :- (i) Operating Unit : A traction drive operating unit consisting of a special designed gear box along with integral double flanged stainless steel drive wheel which acts a single unit for one of the bottom wheels. Incorporated with Consts. Duty 2 hp Electric Motor, IP-55 Protection to suit electric supply of 415 V, 3-phase AC & 50 Cys With energy efficient rating having PF more than 0.85, robust construction. In case of POWER FAILURE, change over from electrical to manual operation is to be achieved by declutching the idler gear into manual position using which two person are able to operate the drive manually with handle and doors shall be opened by disengaging the Gear Box. Qty - 02 Nos (ii) Bottom Wheels : Each door leaf is to be supported at the bottom on minimum of 2 Nos. Heavy duty double flanged stainless steel track wheels of required diameter as per design requirement. The wheel assemblies shall be vertically adjustable, wheel assemblies shall be so that it permits removal of the wheel without removing the door leaf from its position on the rails. The machine wheel treads concentric with bearing. The distance between flanges shall not exceed the width of the rail. Wheel bearing Tapered rollers or spherical bearings, either internal or cartridge type, arranged so that both horizontal and vertical loads shall be transferred to the rail only through the bearing Bearing shall be tightly sealed and equipped with high with highpressure grease fittings. Qty - 12 Nos (iii) Top Rollers System/Telescopic assembly : Each leaf is to be guided at top by min 2 Nos. telescopic Assembly specially designed to compensate the allowable structural deflection, reduce to overall weight of the structure and ensure the smooth running of leaf across the clear opening.Qty - 12 Nos |
| 8 | (iv) Control Panel Systems : Each Door Control Panel shall consist of DOL starters and VFD, drive contactors, motor protection, control fuse holder, fused and indication lamps interlock contactors, limi it / proximity switches, warning lights/hooter, trailing/bunching cable/wiring on the door after the main incoming power junction box. The incoming and of each control panel will be of MCCB 415 Volts, 63 Amps, 10KA and outgoing will be of MCCB 415 Volts,32 Amps, 10KA.Qty - 02 Nos (v) Push Button/Switch Systems : Master panel is fitted with a pendant push button station. The pendant is mounted tot the leading edge of the leaf on cord about 2 meters long that allows the operator to move from side to side to see where the door ds being drive. The pendent is hung up on a hood when not in use. The buttons themselves include “Move”, “Open Mode” (as required) and “Emergency STOP” buttons. The “Open”, “Close” and “Move” push buttons are the dead man’s type: the Emergency “STOP” button is a red mushroom-headed,”Twist – to reset” type. In addition, a “Power ON” indicator lamp shall be fitted. Master Panel shall be fitted internally with an audible and visual alarm which operates at all times the “MOVE” button is pressed and for safe period before the leaf is in motion under power.An Interlock switch is fitted to the internal access panels for the drive units to prevent any leaf being used it is open. On operation OPEN/CLOSE push button, the veriable speed drive control panel shall enable the doors to be stated and accelerated to their running speed by a smooth & gradual increase of the speed over an interval of time. Similarly, on receiving a confirmation from the ‘Pre- final” limit/proximity switch, the panel shall automatically decrease the speed of the door smoothly & gradually from running speed to full rest. Qty - 02 Nos (vi) The following features shall be incorporated in the control system of the door. (a)The Control Panel shall be located as directed for easy operation and enable the operator to have a full view of the area during operation of the door. (b)Buffers: Heavy duty energy absorbing buffer stops are to be designed and to be provided at the extremities of the bottom track to cushion and stop the doors coming off the end of their tracks in an emergency situation. |
| 9 | (c)The OPEN & CLOSE Push Buttons are constant pressure (HOLD to RUN) and the EMERGENCY STOP Push Buttons is STAY PUT type and have to be twisted to release. (d) Emergency limit switch shall be provided at the extreme limits of travel just before the mechanical buffers. These emergency limit switches shall totally cut-off the control/power supply to the system in case the doors over shoot their normal limits. (e)Audio/Visual Alarm: Master door panel shall be provided with a Flash Light cum Hooter that shall start & continue to operate during the time door is in operation. Qty -02 Nos (f)Key operation: An operation key switch shall be provided on each control panel to prevent unauthorized operation of the doors |
| 10 | OTHER CIVIL WORKS: |
| 11 | Demolation of brick workbuilt in cement mortar or cement lime mortar complete all as specified & as directed |
| 12 | Dismantling steel corrugated or semi corrugated,sheetsany gauge, thickness, in roof/Claddingcovering complete all as specified & as directed |
| 13 | Dismantling strcutural steel work including steel doors , gates but excluding framed trusses complete all as specified & as directed |
| 14 | M&L Precast cement concrete block masonary 1:3:6 type C-1, using 20mm graded stone aggregat with solid blocks exc 10cm in width and setting in mort 1:6 complete all as specified & as directed. |
| 15 | Taking down cement plaster on brick or stone walls, etc. including raking out joints, hacking for key, scrubbing down with water, etc.complete all as specified & as directed |
| 16 | M&L for rendering15 mm thick in CM (1:4) on fairfaces of brickwork or concrete surfaces, with usingwater proofing compound @ 3% by weight of cementor as per manufacturer"s instructions, finished even &smooth without using extra cement complete all as specified & as directed.(Note: - WPC shall be measured and paid forseparately under relevant item) |
| 17 | M&L for rendering 10mm thick in CM (1:4) on fairfaces of brickwork or concrete surfaces, with usingwater proofing compound @ 3% by weight of cementor as per manufacturer"s instructions, finished even &smooth without using extra cement complete all as specified & as directed. |
| 18 | Supply only integral water proofing compound |
| 19 | Material & Labour for applying Two or more coats of 100% Premium acrylic emulsion paint having VOC less than 50 gm/litre and UV resistance as per IS 15489:2004, Alkali & fungal resistance, dirt resistance exterior paint of required shade (Company Depot Tinted) with silicon additives @ 1.43 litre/ 10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/ 10 sqm over new surfaces complete all as specified & as directed |
| 20 | Material & Labour for applying One or more coats of 100% Premium acrylic emulsion paint having VOC less than 50 gm/litre and UV resistance as per IS 15489:2004, Alkali & fungal resistance, dirt resistance exterior paint of required shade (Company Depot Tinted) with silicon additives @ 1.43 litre/ 10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/ 10 sqm over new surfaces complete all as specified & as directed |
| 21 | S&F pre painted Galvalum aluminium Zinc coating GI based corrugated steel sheet 0.50 mm th of an colour having tensile stregth of 550 with self tapping screws all as specifieed Mpa as in roof covering /cladding to wall fixed complete all as specified & as directed |
| 22 | M&Lfor preparation of newsteel surafces of any description not otherwise described , not exc 10 cm width or girth , priming with a coat of paint of approved shade all as specified and directeed by EIC red oxideprimer and applyinng 2 coats of synthetic enamel complete all as specified & as directed. |
| 23 | Taking Chowkhats or frames exc 1.5 sq. m but n exc 4 sq. m each complete allas directed |
| 24 | M& L for Powder coated aluminium (minimum thickness of powder coating 50 micron) for shutters of doors, windows & ventilators including providing and fixing hinges/ pivots and making provision for fixing of fittings wherever required including the cost of EPDM rubber/neoprene gasket required (Fittings shall be paid for separately) with extruded built up standard tubular sections/ appropriate Z sections and other sections of approved make conforming to IS: 733 and IS:1285, fixing with dash fasteners of required dia and size, including necessary filling up the gaps at junctions, i.e. at top, bottom and sides with required EPDM rubber/ neoprene gasket etc. Aluminium sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, Aluminium snap beading for glazing/ paneling, C.P. brass/ stainless steel screws all complete as per architectural drawings and the directions of Engineer-in-charge. |
| 25 | M & L for TMT bars 10mm dia & over,cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends & binding with & including mild steel wire (annealed) not less than 0.9mmdia or securing with clips |
| 26 | M& L for TMT bars 6mm to 8mm dia,cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends & binding with & including mild steel wire (annealed) not less than 0.9mmdia or securing with clips |
| 27 | M&L for Formwork to sides of pillars, posts, struts, piers, columns and stanchions, etc, as per specification and directed by engineer -in -charge. |
| 28 | Providinganderectingsteelprops (up to full height, braced at centre, resting on wedge and block to support the structure provisionally during repair work and maintaining them in position till required and as directed by the Engineer-in-charge. |
| 29 | Chipping of unsound weak / loose concrete, concrete cover in damaged / honey combed areas with electric hammer or manually including tapering all edges, making square shoulders of cavities etc. complete as per site requirement and directions of Engineer-in-charge. |
| 30 | Corrosion Treatment to Existing Reinforcement: Providing and applying Sika Rustoff 100, single component liquid that removes rust and prevents further rusting of steel structures by providing a passivating coat, according to specification. The rust remover should have adensity of 1.01 kg/l at 30°C and the consumption of the material should be 0.2 kg/ square meter to be applied in 2 coats. |
| 31 | Providing and applying SikaTop Armatec-108 Plus, two component, cement based, polymer modified, protective coating with corrosion inhibitor. The anti corrosive coating shall have mixed density of 1.8 - 2.0 kg / litre and Tensile Adhesion Strength of 1 - 2 N / mm2. |
| 32 | Treatment to Cracks: Makeing "V" groove of 5mm wide and 5mm deep over crack line by electrically operated angle grinder with diamond concrete saw blade and cleaning it by air blower as directed by Engineer-in-charge. |
| 33 | Sealing of exposed "V" groove of 5mm deep and 5mm wide with Sikadur-31 IN, a solvent-free, moisture tolerant, thixotropic, two part structural adhesive and repair mortar, based on epoxy resins and special fillers. The epoxy adhesive and repair mortar should conform to ASTM C 881, Type I, Grade 3, Class B+C. Mixed Density should be ~1.80 ± 0.01 kg/l at 30°C and on vertical surfaces it should be non-sag up to 10 mm thickness, according to FIP 5.3 with measurement according to ASTM D2730. The material should exhibit following minimum properties: Compressive Strength according to ASTM C-579 at +30°C in 1 day = 45 N/mm2, in 14 days = 60 N/mm2; Tensile adhesion strength according to ASTM C 882 at +30°C for dry concrete, in 7 days = 10 N/mm2; Flexural Strength according to DIN EN 196 at +30°C, in 1 day = 10 N/mm2, in 14 days = 25 N/mm2; Tensile strength according to ISO 527 at +30°C,in 3 days = 5 N/mm2, in 7 days = 8 N/mm2. |
| 34 | Drilling and fixing injection packers in RC members including:- Drilling Holes: Drilling holes in structural members at the intervals as per recommendation of engineer in charge. Cleaning of holes: Clean the holes by air blower prior to fixing nozzles. Fixing of Packers: Insert & fix packers of required size as per site conditions in cleaned holes with epoxy resin based putty or equivalent. Cutting of Packers: Cut the packers by cut of wheel after completionof grouting without damaging structural elements. |
| 35 | Providing and applying Sikadur-55 LP IN, a two part, solvent-free, low viscosity injection-liquid, based on high strength epoxy resin, according to specification. The product must Confirms to ASTM C881, Type II and IV, Grade-1, Class F. The epoxy injection system must have a mixed density of 1.08 kg/l at +27°C and the viscosity of ~250 mPas at +30°C. The epoxy injection should have following minimum physical properties: Compressive Strength according to ASTM C 579 at +30°C in 7 days should be= 70 N/mm2; Tensile Strength should be ~ 50 N/mm2 after 7 days at +30°C according to ASTM D 638; Bond Strength to concrete according to ASTM C 882 should be ~7 N/mm2 after 2 days at +30°C & ~10 N/mm2 after 14 days at +30°C; Flexural strength according to ISO 178 at +30°C in 7 days should be ~50 N/mm2; Tensile Modulus should be ~2000 N/mm2 after 7 days at +30°C according to ASTM D 638; Tensile Elongation ~1.9 % according to ASTM D 638; Water absorption should be ~0.6 % after 24 hours water immersion according to ASTM D 570; Material should not shrink as per ASTM C 883. |
| 36 | Fixing & Grouting of New Reinforcement: Providing & fixing rebar of required length & diameter with Sika AnchorFix®-3030 or equivalent whereever required in RCC members including power drilling, cleaning of holes, then rebars should be inserted in holes that should be filled with epoxy to ensure the bond as per manufacture recommendation complete as per site requirement and directions of Engineer-incharge. |
| 37 | Providing & fixing shear connectors of 16 mm dia TOR steelup to 160mm length with Sika AnchorFix®-3030 or equivalent Epoxy resin RCC members including power drilling, cleaning of holes, insertion of epoxy, placing shear connectors in position to ensure the bond as per manufacture recommendation complete as per site requirement and directions of Engineer-incharge. |
| 38 | Epoxy Based Bonding Primer: Providing and applying Sikadur-32 LP solvent-free, two component bonding agent, based on selected epoxy resins, and confirming to ASTM C 881, Type II, Grade 2, Class B+C and should have a mixed density of 1.70 kg/l at +27°C. The epoxy bond coat should have: Compressive Strength in 7 days should be = 55 N/mm2 according to ASTM C 881 at +30°C; Flexural Strength in 10 days should be 30 - 35 N/mm2 according to IS 9162-1979 at +30°C; Tensile Strength in 14 days should be 18 - 20 N/mm2 according to ISO 527 at +30°C; Bond Strength in 14 days with dry concrete should be = 10 N/mm2 according to ASTM C 882 at +30°C. Consumption of the material should be between 0.7 to 0.8 Kgs/m2. |
| 39 | Patch Repair with Single Component, Polymer Modified, Ready to Use Cementitious Mortar (For Beams & Slabs): Providing and applying Sika MonoTop-122 F, dual shrinkage compensated trowelable fiber reinforced, thixotropic high strength mortar for structural concrete repairs. The repair mortar should have a bulk density of ~1.3 kg/l at 27 ºC and should have Compressive Strength at an ambient temperature of +30°C according to ASTM C109in 1 day = 20 N/mm2 , in 28 days = 50 N/mm2; Flexural Strength at an ambient temperature of +30°C according to EN 196 -1 in 7 days = 6 N/mm2 , in (28 days) = 9 N/mm2; Bond Strength at an ambient temperature of + 30°C according to ASTM C882 in 7 days = 8 N/mm2, in 28 days = 12 N/mm2. The consumption of the repair mortar should be ideally~2200 kg/m3 at water: powder ratio of 0.16. |
| 40 | Jacketing with Micro Concrete (For Columns) Providing and applying SikaRep Microcrete-4, factory designed pourable, non shrink, repair concrete with selected cement, aggregate and other chemicals, according to specification. The repair micro concrete must comply to the standards of ASTM C1107 and must comply to the following minimum standards: Compressive Strength at an ambient temperature of +30°C according to ASTM C 109 for 70mm Cube in 1 day ~25 N/mm2, in 3 days ~35 N/mm2, in 7 days ~45 N/mm2 and in 28 days ~65 N/mm2; Flexural Strength at an ambient temperature of +30°C according to ASTM C 293 in 7 days ~7 N/mm and in 28 days ~8 N/mm. |
| 41 | Corroion Inhibiting Protective Coating (All Areas) Providing and applying of Sika FerroGard-903 a surface applied corrosion inhibitor, based on organic and inorganic compounds, designed for use as an impregnation of steel reinforced concrete, applied approx 0.5kg/m2 on concrete surface. The corrosion inhibitor must penetrate the concrete and form a protective mono molecular layer on the surface of the reinforcing steel thereby delaying the start of corrosion and reducing the corrosion rate. Chemical Base of the material should be Amino alcohol and inorganic combination with density of 1.13 at +20°C and pH value of 11 with viscosity of 25 Cps. The corrosion inhibitor coating should have perfromance reports from International agencies Mott MacDonald, Wolfseher & Partner, Materials Technological Investigation. |
| 42 | Structural Strengthening / Column Confinement with CFRP - Sikawrap System: Supply and apply a stitched, one directional, high strength 450 GSM CFRP fabric SikaWrap® 451C IN in single layer over RCC member as per specification after surface preparation by rounding off sharp edges to 25 mm radius and cleaning it properly including thixotropic epoxy based impregnating resin / adhesive Sikadur®-330. Wrapping the CFRP fabric to RCC member atdesired orientation using tamping rollers to avoid any airvoids etc. and sprinkling sand over it as per direction and satisfaction of Engineer-in-charge. Epoxy and CFRP shall be from same manufacturer, Epoxy shall have durabity test report from EMPA reputed international swiss based lab. CFRP product used shall have minimum requirements: Tensile strength (nominal) = 4900N/mm2; Tensile E – modulus = 250000 N/mm2; elongation at break (nominal): 2.1%; fabric design thickness = 0.250 mm. |
| 43 | Flexural Improvement of Beams / Slabs with Sika Carbodur Laminates & Epoxy Adhesive Sikadur-30 LP (IN): Supply and apply ETA Approved, Pultruded CFRP plate of 100mm wide and 1.4 mm thick for structural strengthening of RCC withSika® CarboDur® S-1014 having properties of E-modulus: 1.65x105 N/mm2; tensile strength >=2800 N/ mm2. Product requirements: ETA-21/0276 Approved under catagory of strenthening of Concrete elements, approved by Fib, technical report, bulletin 14; E-break > 1.7%; temperature resistant > 150oC. Along with supply and apply a solvent-free, epoxy based, thixotropic, structural two part adhesive for plate bonding with Sikadur®-30 LP (IN) having properties of Compressive Strength >90 N/mm2 (7 days) according to ASTM C579; Shear Strength >10 N/mm2 (7 days at 250C) according to FIP 5.15; Bond Strength >= 2.5 N/mm2 according to EN1542. Including Surface Preparation by grinding of concrete surface by electrically operated diamond cup wheel grinder, rounding off sharp edges to 25 mm radius and cleaning it properly as per direction and satisfaction of Engineer-in-charge |
| 44 | Protective Coating ( All Areas ) Providing and applying 2 coats of Sikagard-550 W IN, one part, plasto-elastic coating based on UV-curing acrylic dispersion with excellent crack-bridging & anti-carbonation properties; having Dry Film Thickness of 200 Microns. The coating must be acrylic copolymer based with density of ~1.4 kg/l at +27°C & solid content of ~70 %. The coating must exhibit CO2 diffusion resistance > 50m and water vapour diffusion resistance < 5m for thickness of 200 microns. The coating should have following minimum system properties: Elongation at break > 200 % according to ASTM D 412; Crack Bridging Ability 3.2 mm at according to ASTM C 1305; Adhesion Strength > 1.5 N/mm2 according to ASTM D 4541; no discoluration after 400 hours of UV exposure and negligible chloride ion penetration when applied to concrete substrates. The surface should be primed with acrylic based Sikagard-552 IN Primer W having the density of~1.02 kg/l at +27°C. Consumption of Sikagard-552 IN Primer W shall be approx 0.15 kg / sq mt & Sikagard 550 W IN shall be approx 0.20 kg / sq mt / coat. |
Copyright © 2024 · All Rights Reserved. Terms of Usage | Privacy Policy
For Tender Information Services Visit : TenderDetail
