Repairing and retrofitting of over-bridge Old Zone to New Zone at KASEZ, Gandhidham.

Sr. No (DSR 2023) Items of Works Unit Qty Rate Amount

Grinding to existing concrete surface Carefully removing, loose materials

from concrete surfaces with the help of suitable mechanical tool without

damaging parent core concrete to ensure concrete surface including

scaffolding staging etc. all complete as per direction of Engineer-In-Charge.

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

26.28.2 50mm average thickness Sqm 1200.00 256.35 307620.00

26.28.3 25 mm average thickness Sqm 250.00 126.75 31687.50

Removing of Expansion Joint inclusive of the all labour, tools, temporary

3 NS supports for structures, electricity,etc. all complete as per direction of Rmt 360.00 914.50 329220.00

Engineer-In-Charge

Strip Seal Expansion Joint (Providing and laying of a strip seal expansion

joint catering to maximum horizontal movement upto 70 mm, complete as

per approved drawings and standard specifications to be installed by the

manufacturer/supplier or their authorised representative ensuring

compliance to the manufacturer's instructions for installation all complete

as per direction of Engineer-In-Charge

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

total rust free steel surface by using alkaline chemical rust remover of

5 26.29 approved make with paint brush and removing loose particles after 24

hours of its application with wire brush and thoroughly washing with water

and allowing it to dry, all complete as per direction of Engineer-In-Charge.

26.29.1 Bars upto 12 mm diameter Meter 15000.00 8.25 123750.00

26.29.2 Bars above 12 mm diameter Meter 9400.00 16.45 154630.00

Sr. No (DSR 2023) Items of Works Unit Qty Rate Amount

Bonding Agent: Providing and applying epoxy bonding agent for bonding

old to new concrete for structural members prior applying the epoxy

mortar to the concrete surfaces etc. all complete as per direction of

Engineer-In-Charge.

RUST PASSIVATION: 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

7 NS by brush or spray as per Manufactureres recommendation, complete. The Sqmt 1250.00 367.00 458750.00

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 all complete as per direction of

Engineer-In-Charge.

Corrosion Inhibitor: Providing & applying bipolar migrating corrosion

inhibition treatment to the overall concrete surface repair area including

area where reinforcement is exposed. The product shall be as per

specifications ,Item rate is inclusive of the materials, all labour,

supervision, tools and tackles and transportation etc., complete as per

specification and as direction of engineer in charge.

Powerthrow: Insertion of POWRTHROW, sustained release Corrosion

inhibiting caplets which protect both anodic & cathodic sites and reduces

Corrosion potential in the reinforcement steel, by drilling 25 mm dia holes

into the concrete at a depth of 60 mm and inserts to be filled by epoxy

mortar as per the manufacturing specifications and as per the direction

the Engineer-in-charge.

Galvanic Anode: Embeded Sacrificial galvanic Anode: Providing & fixing

Galvanic Sacrificial anodes in compliance with ASTM B 418-95a Type I 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 upto 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.

Sr. No (DSR 2023) Items of Works Unit Qty Rate Amount

Galvanic Sacrificial Protection of steel by Strip Anodes: Providing and

fixing sacrificial zinc strip anode to protect reinforcement from corrosion of

reinforcement in adjoining sound concrete due to chloride ingress by

installing anodes for Column and Beam area of concrete (as per approved

design), as per manufacturer specification, covered with mortar with of

resistivity less than of parent concrete on the cleaned reinforcement steel

as per manufacturers specification before applying passivation coating at

all heights and including of all material, labour, tools, temporary supports

for structures, scaffolding, electricity, plant and machineries, etc. complete

as directed by Engineer-in-charge.

Micro concrete: Polymer Modified Micro- Concrete: Providing and

laying of polymer modified micro- concrete like Emaco S46 T of

BASF/Renderoc RG (S) of Fosroc/ReCon MC 40 of Conmix or

equivalent material blended with washed, saturated surface-dry (SSD),

graded, low absorption, high density aggregates of size 8 mm &

below up to 50% (as and when required) by weight of micro-concrete and

12 NS water at 4 lit. per 25 kg bag and pouring into the form work using Kg 20000.00 26.00 520000.00

suitable pumping device for uniform flow of concrete. The side

shuttering can be removed after 3 days and the bottom shuttering after 7

days ensuring proper bond between the micro concrete and existing

concrete substrate. Item rate inclusive of all materials, labours,

supervision, tools, tackles, transportation, curing, making of hole etc.

Complete as per the manufacturing specification and as per the direction

Sr. No (DSR 2023) Items of Works Unit Qty Rate Amount

Single Part PMM Treatment: Providing and laying of polymer

modified single component, alkaline resistant fibre reinforced, duel

shrinkage-compensated, thixotropic, cementations patch repair mortar

Emaco S48CT of BASF/ Renderoc SP 40 of Fosroc or equivalent

material that achieves compressive strength of 35 MPa at 7 days

and finishing with trowel carefully compacting the same around the

13 NS rebars and finishing to bring it in line with existing concrete surface on Sqm 1250.00 1550.00 1937500.00

the beams, slabs. pile caps etc., where the thickness of application is less

than 50mm in patches as per specification after applying

bonding coat (bonding coat shall be payable separately). Item rate

inclusive of all materials, labours, supervision, tools, tackles, etc., complete

as per the manufacturing specification and as per the direction the

Engineer-in-charge.

Providing and applying anti carbonation coating as approved make

includding all necessary tools, man power Material , wastage etc. all

complete as per manufacturer specification and direction of enginring In-

Steel work welded in built up sections/ framed work, including cutting,

15 10.25 hoisting, fixing in position and applying a priming coat of approved steel

primer using structural steel etc. as required.

In gratings, frames, guard bar, ladder, railings, brackets, gates and similar

Removing dry or oil bound distemper, water proofing cement paint and the

16 13.91 like by scrapping, sand papering and preparing the surface smooth Sqm 3000.00 25.15 75450.00

including necessary repairs to scratches etc. complete

Painting with synthetic enamel paint of approved brand and manufacture of

required colour to give an even shade :

13.99.1 or more coats on old work Sqm 3000.00 102.80 308400.00

Demolishing R.C.C. work manually/ by mechanical means including

18 15.3 stacking of steel bars and disposal of unserviceable material within 50 Cum 50.00 3551.25 177562.50

metres lead as per direction of Engineer - in- charge.

Dismantling steel work manually/ by mechanical means in built up sections

19 15.19 without dismembering and stacking within 50 metres lead as per direction kg 3000.00 3.85 11550.00

of Engineer-in-charge.

Sr. No (DSR 2023) Items of Works Unit Qty Rate Amount

Dismantling of flexible pavement (bituminous courses) by mechanical

20 15.59 means and disposal of dismantled material up to a lead of 1 kilometre, as Cum 150.00 420.80 63120.00

per direction of Engineer-in-charge.

Taking out existing CC interlocking paver blocks from footpath/ central

verge, including removal of rubbish etc., disposal of unserviceable material

21 16.83 to the dumping ground, for which payment shall be made separately and Sqmt 60.00 131.75 7905.00

stacking of serviceable material within 50 metre lead as per direction of

Engineer-in-Charge.

Preparation of sub-base road pavement with commercial dry lime (slaked),

fly ash stabilised soil with a mix of 3% lime, 12% fly ash and 85% local

suitable soil by weight, so as to achieve minimum field C.B.R. of 20,

including mixing, rolling with road roller curing etc. all complete.

16.51.1 Minimum thickness 15 cm Cum 60.00 1514.40 90864.00

Providing and laying 60mm thick faciory made cement concrete

interlocking paver block of M -30 grade made by block making machine

with strong vibratory compaction, of approved size, design & shape, laid in

required colour and pattern over and including 50mm thick compacted bed

of coarse sand, filling the joints with line sand etc. all complete as per the

direction of Engineer-in-charge.

Providing and applying tack coat using bitumen emulsion conforming to

24 16.31 IS:8887, using emulsion pressure distributer including preparing the

surface & cleaning with mechanical broom

16.31.1 With rapid setting bitumen emulsion

16.31.1.2 On bituminous surface @ 0.25kg/sqm Sqm 7433.60 9.20 68389.12

Providing and laying Dense Graded Bituminous Macadam using

crushed stone aggregates of specified grading, premixed

with bituminous binder and filler, transporting the hot mix to work site by

tippers, laying with paver finisher equiped with electronic sensor to

the required grade, level and alignment and rolling with

smooth wheeled, vibratory and tandem rollers as per specifications to

achieve the desired compaction and density, complete as per specificatons

and directions of Engineer-in-Charge

50 to 100 mm average compacted thickness with bitumen of grade VG-30

@ 5% (percentage by weight of total mix) and lime filler @ 2%

(percentage by weight of Aggregate) prepared in Batch Type Hot Mix Plant

of 100-120 TPH capacity.

Sr. No (DSR 2023) Items of Works Unit Qty Rate Amount

Providing and laying semi- dense Bituminous concrete using crushed stone

aggregates of specified grading, premixed with bituminous binder and

filler, transporting the hot mix to work site by tippers, laying with paver

26 16.56 finisher equiped with electronic sensor to the required grade, level and

alignment and rolling with smooth wheeled, vibratory and tandem rollers

to achieve the desired compaction and density as per specification,

complete and as per directions of Engineer-in Charge.

25 mm compacted thickness with bitumen of grade VG 30 @ 5%

(percentage by weight of total mix) and lime filler @ 2% (percentage by

weight of Aggregate) prepared in Batch Type Hot Mix Plant of 100-120