Repair, rehabilitation and retrofitting of distressed reinforced concrete structures of Classroom Complex Building at SVNIT Campus, Surat at risk and

Name of Work: Repair, rehabilitation and retrofitting of distressed reinforced concrete structures of Classroom Complex Building at SVNIT Campus,

Surat at Risk & Cost of Previous Agency.

Sr.No. Description Quantity Unit Rate Amount

Sub-Head-A Civil and Misc. Works

Sub Head: Eart Work

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual means over areas

1 2.60 (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and 648.00 cum 177.50 115,020.00

disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by Engineer- incharge.

1.1 2.6.1 All kinds of soil

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in

2 2.25 layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, 593.40 cum 196.00 116,306.40

lead up to 50 and for all lift.

Sub Head: Concrete Work

Providing and laying in position cement concrete of specified grade excluding the cost of centering

and shuttering - All work up to plinth level :

1:4:8 (1 Cement : 4 coarse sand (zone-III) derived from natural sources : 8 graded stone

aggregate 40 mm nominal size derived from natural sources)

4 16.11 Dry Stone pitching 22.5 cm thick including supply of stones and preparing surface complete 197.95 Sqm 883.15 174,819.54

Sub Head: Reinforced Cement Concrete Work

Centering and shuttering including strutting, propping etc.

and removal of form for

Suspended floors, roofs, landings, balconies and access

Lintels, beams, plinth beams, girders, bressumers and

5.3 5.9.6 Columns, Pillars, Piers, Abutments, Posts and Struts 4,107.40 Sqm 961.30 3,948,443.62

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position

and binding all complete below/above plinth level.

6.1 5.22A.6 Thermo-Mechanically Treated bars of grade Fe-500D or more 39,000.00 Kg 107.85 4,206,150.00

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Sr.No. Description Quantity Unit Rate Amount

Providing and laying in position ready mixed or site batched design mix cement concrete for

reinforced cement concrete work; using coarse aggregate and fine aggregate derived from

natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in

recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve

durability and workability without impairing strength; including pumping of concrete to site of

7 5.33 laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and

reinforcement as per direction of the engineer-in-charge; for the following grades of concrete.

Note: Extra cement up to 10% of the minimum specified cement content in design mix

shall be payable separately. In case the cement content in design mix is more than 110%

of the specified minimum cement content, the contractor shall have discretion to either re-

design the mix or bear the cost of extra cement.

7.1 5.33.1 All works upto plinth level

7.1.1 5.33.1.2 Concrete of M30 grade with minimum cement content of 350 kg /cum 33.00 cum 9,655.70 318,638.10

7.2 5.33.2 All works above plinth level upto floor V level

7.2.2 5.33.2.2 Concrete of M30 grade with minimum cement content of 350 kg /cum 609.05 cum 10,011.35 6,097,412.72

Sub Head: Brickwork

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in

superstructure above plinth level up to floor V level in all shapes and sizes in :

8.1 6.4.1 Cement mortar 1:4 (1 cement : 4 coarse sand) 50.00 cum 9,344.35 467,217.50

Extra for brick work / AAC block masonry / Tile brick masonry in superstructure above floor V

level, for each four floors or part thereof by mechanical means.

Providing and laying autoclaved aerated cement blocks masonry with 150 to 300 mm thick with

Grade-I AAC blocks of density 551 to 650 kg/cum confirming to IS:2185 (part 3) in super

10 6.47 structure above plinth level up to floor V level with RCC band at sill level and lintel level with 50.00 cum 8,333.65 416,682.50

approved block laying polymer modified adhesive mortar all complete as per direction of Engineer-

in-Charge. (The payment of RCC band and reinforcement shall be made for seperately).

Sub Head: Finishing Work

11 13.4 12 mm cement plaster of mix :

Sub Head: Dismantling and Demolishing Work

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and

disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge.

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Sr.No. Description Quantity Unit Rate Amount

Dismantling tile work in floors and roofs laid in cement mortar including stacking material within

50 metres lead.

13.1 15.23.2 For thickness of tiles above 25 mm and up to 40 mm 2,626.25 Sqm 113.35 297,685.44

Demolishing brick work manually/ by mechanical means including stacking of serviceable material

14 15.7 and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-

Dismantling old plaster or skirting raking out joints and

15 15.56 cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 13,917.00 Sqm 54.65 760,564.05

Disposing of building rubish/malba/similar unserviceable ,dismantled or waste materials by

mechnical means,including loading,transportation,unloading to approved muncipal dumping

ground or as approved by Engineer in charge beyond 50 mtr intial lead,for all leads including all

lifts involved .

Demolition of cement Concrete by maually/mechenical means including disposal of material

within 50 mtrs leas as instructed by Engineer Incharge

Dismantling doors,windows and cleestory windows(steelor wood0shtter including

chowkhats,architrave,holdfasts etc.completeand stacking within 50 meters lead

Sub Head : Water Proofing

Providing and laying water proofing treatment in sunken portion of WCs, bathroom etc., by

applying cement slurry mixed with water proofing cement compound consisting of applying :

(a) First layer of slurry of cement @ 0.488 kg/sqm mixed with water proofing cement compound

@ 0.253 kg/ sqm. This layer will be allowed to air cure for 4 hours.

19 22.50 (b) Second layer of slurry of cement @ 0.242 kg/sqm mixed with water proofing cement 560.00 Sqm 617.05 345,548.00

compound @ 0.126 kg/sqm. This layer will be allowed to air cure for 4 hours followed with water

curing for 48 hours.

The rate includes preparation of surface, treatment and sealing of all joints, corners, junctions

of pipes and masonry with polymer mixed slurry.

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Sr.No. Description Quantity Unit Rate Amount

Providing and laying integral cement based water proofing treatment including preparation of

surface as required for treatment of roofs, balconies, terraces etc consisting of following

(a) Applying a slurry coat of neat cement using 2.75 kg/sqm of cement admixed with water

proofing compound conforming to IS. 2645 and approved by Engineer-in-charge over the RCC

slab including adjoining walls upto 300 mm height including cleaning the surface before treatment.

(b) Laying brick bats with mortar using broken bricks/brick bats 25 mm to 115 mm size with 50%

of cement mortar 1:5 (1 cement : 5 coarse sand) admixed with water proofing compound

conforming to IS : 2645 and approved by Engineer-in-charge over 20 mm thick layer of cement

mortar of mix 1:5 (1 cement :5 coarse sand) admixed with water proofing compound conforming

to IS : 2645 and approved by Engineer-in-charge to required slope and treating similarly the

adjoining walls upto 300 mm height including rounding of junctions of walls and slabs.

(c) After two days of proper curing applying a second coat of cement slurry using 2.75 kg/ sqm of

cement admixed with water proofing compound conforming to IS : 2645 and approved by

Engineer-in-charge.

(d) Finishing the surface with 20 mm thick jointless cement mortar of mix 1:4 (1 cement :4 coarse

sand) admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-

in-charge including laying glass fibre cloth of approved quality in top layer of plaster and finally

finishing the surface with trowel with neat cement slurry and making pattern of 300x300 mm

square 3 mm deep.

20.1 22.7.1 With Average thicknes of 120 mm & minimum Thickness at Khura as 65 mm 1,284.80 Sqm 1,684.60 2,164,374.08

Sub Head : New Technologies and Materials

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

21 26.28 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

21.1 26.28.1 75mm average thickness 282.75 Sqm 378.00 106,879.50

Cleaning of reinforcement from rust from the reinforcing bars to give it a total rust free steel

surface by using alkaline chemical rust converter of approved make with paint brush and

removing loose particles after 24 hours of its application with wire brush, as per manufacturer's

recommendations & all complete as per direction of Engineer-In-Charge.

22.1 26.29.1 Bars upto 12 mm diameter 99,000.00 metre 8.25 816,750.00

22.2 26.29.2 Bars above 12 mm diameter 40,425.00 metre 16.45 664,991.25

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as

per specifications and direction of Engineer-In-charge complete in all respect.

SBR Polymer (@10% of cement weight) modified cementitious bond coat @ 2.2 kg cement per

sqm of surface area mixed with specified proportion of approved polymer

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Sr.No. Description Quantity Unit Rate Amount

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.)

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

Repair to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sqm and under, including

cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with

white cement based polymer modified self curing mortar, including disposal of rubbish, all

complete as per the direction of Engineer-In-Charge.

Providing, mixing and applying SBR polymer (of approved make) modified Cement mortar in

proportion of 1:4 (1 cement: 4 graded coarse sand with polymer minimum 2% by wt. of cement

used) as per specifications and directions of Engineer-in-charge.

26 26.32 Note: Measurement and payment: The pre-measurement of thickness shall be done just after the 1,200.00 Sqm 587.35 704,820.00

surface preparation is completed and Payment under this item shall be made only after proper

wet curing has been done and surface has been satisfactorily evaluated by sounding / tapping

with a blunt metal instrument and/or the 75 mm size cube crushing strength at the end 28 days to

be not less than 30 N/Sqmm2).

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Sr.No. Description Quantity Unit Rate Amount

26.1 26.32.2 25 mm average thickness in 2 layers.

Sub-Total Sub Head:- Sub-Head-(A) Civil and Misc. Works 39,574,365.09

Total Sub Head:- Sub-Head-(A) Civil and Misc. Works based on Modified Estimated cost after using correction factor on DSR 2023 on

account of GST@ 0.973

Sub-Head (B) = Repair, Retrofitting and Strengthning works

Providing and applying of ready to use 2 component acrylic cementitious waterproofing coating

comprising of 2 coats of equal consumption of 1.5 kg/sqm and reinforced with glass fabric cloth

applied over a saturated surface inclusive of providing & execution according to specification at

all heights and floors. The 2 coats must be applied at right angle to each other with a brush. The

coating must be taken to a height of 300 mm on walls. The material to be used shall be of

approved manufacturer only and provide valid certificates as a proof. Coated area shall be

measured and paid (unit of mesurement shall be in sqm over the applied surface where is

Providing and applying Two component, low solvent, zinc rich epoxy resin based Anticorrosive

Treatment of reinforcements in coats with time interval of minimum 4 hours between each coat of

the specified approved makes . The application shall be done by brush or spray as per

Manufactureres recommendation, complete. The rates are inclusive of all materials, labor,

machinery, equipment, tools, tackles etc., all complete. Mode of measurement will be per sqmt of

the exposed reinforcement area of concrete.

Embeded Sacrificial galvanic Anode (Capsule): Providing & fixing Galvanic Sacrificial anodes in

compliance with ASTM B 418 Type II in RCC elements after tying them to the existing clean rebar

with the specially attached wires to it in a grid fashion to achieve corrosion potential more

negative than rebar. The sacrificial anode shall have zinc mass of at least 60 grams encased in

conductive mortar. The anodes shall be soaked in water for about 30 minutes before installation.

Work to be executed complete as per manufacturer specification and the project consultants.

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Sr.No. Description Quantity Unit Rate Amount

Galvanic sacrificial protection of steel using strip type anodes:Providing and fixing sacrificial zinc

strip anode Weight of ZINC content in strip anode should not be less than 0.89kg/Meter to protect

reinforcement from corrosion of reinforcement in adjoining sound concrete due to chloride ingress

by installing anodes from approved manufacturer having zinc core in compliance with ASTM B418

Type II encased in an activation mortar having pH more than 14 and not containing intentionally

added constituents that are corrosive to the embedded steel as per ACI 222R such as chlorides,

bromides,or other halides.The core zinc shall be evenly distributed around a steel core which is

30 NDSR continuous along the length of the anode, and supplied with a pair of uncoated stainless steel tie 50.00 Nos. 22,696.74 1,134,837.00

wires to make connection to the reinforcement. The anodes shall be overed with bed-mortar of

resistivity less than 50 kOhm-cm or similar to the parent concrete on the cleaned steel

reinforcement as per manufacturers specification All necessary design calculations for spacing of

anodes, stallation training, installation confirmation, monitoring of set of anodes to confirm current

from anodes shall be carried out by manufacturer's representative (preferably, a NACE Certified

CP2 or higher) complete at all heights and including of all materials, labour, tools, plants and

machineries as directed by Engineer-in-charge

Application of shrinkage compensated self compacting ultra-high performance concrete for Making

up lost section of concrete for thickness as per structural drawings, after the application of

bonding agents, followed by water curing/ chemical curing for at least 7 days. The rates are

31 NDSR inclusive of all materials, labor, machinery, equipment, tools, tackles, etc., all complete.The 37.50 cum 68,000.00 2,550,000.00

concrete shall be free flow, Self compacting & should not require any vibratory

compaction.Payment shall be made on the basis of consumed dry material of concrete and

payment for bonding agents will be done through separate BOQ item. - minimum M 60 grade

Application of shrinkage compensated self compacting high performance concrete of minimum M-

40 grade for Making up lost section of concrete for thickness as per structural drawings, after the

application of bonding agents, followed by water curing/ chemical curing for at least 7 days. The

32 NDSR rates are inclusive of all materials, labor, machinery, equipment, tools, tackles, etc., all 750.00 cum 14,900.00 11,175,000.00

complete.The concrete shall be free flow, Self compacting & should not require any vibratory

compaction.Payment shall be made on the basis of consumed dry material of concrete and

payment for bonding agents will be done through separate BOQ item.

Stainless steel (SS) reinforcement bars for R.C.C. work including straightening, cutting, bending,

33 NDSR placing in position and binding all complete below/above plinth level. 78,000.00 Kg 188.00 14,664,000.00

High Strength deformed Stainless Steel bars of SS-550 grade as per IS 16651:2017

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Sr.No. Description Quantity Unit Rate Amount

Providing and Injecting non-shrink cement grout with OPC cement slurry (with slurry mix would

have around 16-18 liter water and 500 ml of EPKO KP 200 or equivalent corrosion inhibitor and

CEBAX 100 or equivalent non-shrink compound dose as per manufacturer per Bag of 50Kg of

Cement) at pressure upto 4 Kg / Sq cm. Grouting to be done till the nozzle refuses to accept the

grout. Measurement shall be done for nozzle points.

The rate includes the cost of nozzle and its fixing grout material etc. complete.

Providing and Injecting super low viscous epoxy grout of approved make with pressure through

35 NDSR Pressure shall be upto 8Kg / Sq cm. Grouting to be done in cracks till the nozzle refuses to accept 175.00 Nos. 550.00 96,250.00

the grout, as per specifications. Measurement shall be done for nozzle points.

NOTE: The rate includes the nozzle & its fixing, grout material also.

For Shear Connector/Ties/Stirrups: Supply and fixing of shear connectors/ties/stirrups using

specially fabricated glass FRP bars of 6/8mm diameter for column/beam/Shear walls etc at

designed embedement length wherever required , including power drilling, cleaning of holes, then

rebars should be inserted in holes that should be filled with FIS V Plus of Fischer or equivalent, a

hybrid rebarring chemical with ETA approval, DIBt, approved for diameter range from 8 mm to

36 NDSR 28mm reinforcement bar as per manufacturer's specification as per the direction of Engg In-

charge. Drilling of hole should be done upto provided embedment depth as per the design from

manufacturer approved by EnC, followed by cleaning with blow pump, wire brush and blow pump

for 4 times, complete as per the manufacturer's methodology. The chemical shall have tested

service life of 50years as per ETA. Cost of providing, cutting, bending of rebar shall be paid

separately as per approved item.

Rebar For Main Reinforcement: Supply and fixing of main reinforcement using rebars of

designated dia for column/beam/Shear walls/Foundations at designed embedement length

wherever required , including power drilling, cleaning of holes, then rebars should be inserted in

holes that should be filled with FIS EM Plus of Fischer or equivalent, a heavy duty pure epoxy

based rebarring chemical with ETA approval, DIBt, approved for diameter range from 8 mm to 40

mm reinforcement bar as per manufacturer's specification as per the direction of Engg In-charge.

Drilling of hole should be done upto provided embedment depth as per the design from

manufacturer approved by EnC, followed by cleaning with blow pump, wire brush and blow pump

for 4 times, complete as per the manufacturer's methodology. The chemical shall be approved for

diamond-drilled and water-filled drill holes as well as seismic applications in performance

categories C1, C2 for rebar connections.shall have ETA complying to EAD 332402-00-0601-v01.

Cost of providing, cutting, bending of rebar shall be paid separately as per approved item.

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Sr.No. Description Quantity Unit Rate Amount

Cutting suitable holes/cores in reinforced cement concrete with core cutting machine to a depth

of upto 200mm in RCC slabs. (All complete as per direction of Engineer-In-Charge.)

Supplying and applying pre tested and approved acrylic based concrete curing compound Concure

39 NDSR ab or euivalent to concrete/ masonry surface, all as per manufacturer's specification and 8,400.00 Sqm 172.00 1,444,800.00

direction of Engineer-in- charge.

Providing and applying plasto-elastic coating based on UV-curing acrylic dispersion with excellent

crack-bridging & anti-carbonation.

Properties:- 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

40 NDSR Bridging Ability 3.2 mm at according to ASTM C 1305; Adhesion Strength > 1.5 N/mm2 according 2,000.00 Sqm 380.00 760,000.00

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. The supplier must have

their own manufacturing facility, should not be private label product or sourced from third party.

The manufacturer must be an ISO 9001 & 14001 certified and valid certificates must be produced

Application of POLYMER MODIFIED repair mortar of minimum 40 MPA compressive strength or

higher of approved make for Making up lost section of concrete after the application of bonding

agents (Bond coat) for thickness upto 30mm thickness in 2 layers . It would be followed by

41 NDSR water/chemical curing for at least 7 days. The rates are inclusive of all materials, labor, 2,450.00 Sqm 2,795.00 6,847,750.00

machinery, equipment, tools, tackles, etc., all complete. Payment shall be made on the basis of

surface area of PMM. The payment for bonding agents/coat will be done through separate BOQ

Total Sub Head (B)= Repair, Retrofitting and Strengthning works 74,191,251.00

Digitally signed by AVDHESH