Rate Contract for Earthing Work in Various Offices and Building Premises in West Zone of AMC. (Within the limit of Amount Rs.10.00 lacs)

(Technical Bid only) of Tender

Office, Mezzanine Floor, “B”-Block,

in Physical form Sardar Patel Bhavan, Danapith,

Ahmedabad-380001.

4 Tender Vol-I (Technical Bid on 23/04/2026, 04:05 pm onwards

only) Opening Date, Time and Online Opening:- At the Office of

Place Additional Chief Engineer(Electrical),

Light Department, 5th Floor, “C”-Block,

Sardar Patel Bhavan, Danapith,

Ahmedabad-380001.

Physical Opening:-At the Office of Tender

Officer, Central Record Office, Mezzanine

Floor, “B”-Block, Sardar Patel Bhavan,

Danapith, Ahmedabad - 380001 or at

the above said office.

MUNICIPAL COMMISSIONER

Ahmedabad Municipal Corporation

Sardar Patel Bhavan,Danapith

PRICE BID (FOR REFERENCE ONLY)

Tender for Rate contract for Earthing Work in various Offices and Building

Premises in West zone of AMC.

(Within the limit of Amount Rs.10.00 lacs)

Item Description Unit Qty

Providing and Erecting required size Aluminium

strip for earthing of H.T., OCB / ACB /

Transformer, LT Panel Board, Motors etc. using

Providing and Erecting required size HOT deep

Galvanised iron strip for earthing of H.T., OCB /

ACB/ Transformer LT Panel Board, Motors etc.

using proper clamp.

Providing and Erecting required size Copper strip

3.0 for earthing of H.T. OCB / ACB/ Transformer, LT Kg. 1

Panel Board, Motors etc. using copper clamp.

Providing and Erecting Annealed bare Copper

wire 8 to 16 SWG.

Providing and Erecting HOT deep Galvanised iron

strip wire 8 to 16 SWG.

Providing and Erecting Pipe type earthing having

150 cms. long and 2.5 cms. dia. galvanised iron

6.1 pipe with coupling and buch buried in specially Ea. 1

prepared earth pit complete with necessary

SWG earth wire.

Providing and Erecting Pipe type earthing with

mm dia 2.5 mtr long 'B' grade G.I. pipe with

6.2 necessary coupling buch buried in specially Ea. 1

prepared earth pit & G.I. earth wire of 8 SWG

erected & connected as directed (For panel)

For using salt and charcoal / coke as required

for pipe type earthing.

Supplying & Erecting earth pit of minimum bore

dia.150mm size approved make Earthing

Electrode consisting Pipe-in-Pipe Technology as

per IS 3043-1987 made of corrosion free hot

dipped G.I. Pipes having Outer pipe dia of 50mm

having 80-200 Micron galvanising, Inner pipe dia

of 25mm having 200-250 Micron galvanising,

connection terminal dia of 12mm with constant

ohmic value surrounded by highly conductive

compound with high charge dissipation suitable

for following type of applications with chamber

and heavy duty cover. (A)(approved make OEM

has to submit test certificate including value of

earth resistance of installation duly stamped and

7.1 signed by agency and officer Incharge has to Ea. 1

ensure the value of earthing resistane mentioned

in test Certificate) & having back filling

compound of (B) Inner chemical (CCM

Compound)- Resistivity:- 0.2 ohm / meter testing

as per IEC 62561-2017, Voltage drop:- <1 volt at

no load & dry form, Sulphar content:- <2% (C)

Back fill Compound:- Earthing compound should

be capable to retain moisture for long time

Necessary test report must be submitted by

(a) For Electrical Installation up to 440V in

Length of pipe - 1 Mtr

Back filling compound - 1 Nos Bag of 15 Kg.

Same as Above For –

(b)For Electrical installation up to 11 KV in

7.2 normal soil. Ea. 1

Length of Pipe: 2.00 mtrs

Back filling Compound :1 no. Bag of 25 Kg.

Same as Above For –

(c) For Electrical Installation covering

Transformer Neutrals, Lightning arrester

Earthing, A.C.Plant & Sensitive Computer

System(like Automation, SCADA) i.e independent

Earthing in normal soil.

Length of Pipe : 3.00 mtrs

Back filling Compound :2 nos Bags of 25 Kg.

Supplying & Erecting in earthpit of minimum

bore dia. 225mm size approved make Safe

Earthing Electrode consisting Pipe-in-Pipe

Technology as per IS 3043-1987 made of

corrosion free hot dipped G.I. Pipes having Outer

pipe dia of 80mm having 80-200 Micron

galvanising, Inner pipe dia of 40mm having 200-

250 Micron galvanising, connection terminal dia

of 4 mm with constant ohmic value surrounded

by highly conductive compound with high charge

dissipation suitable for following type of

applications with chamber and heavy duty cover

(A)(approved make OEM has to submit test

8.1 certificate including value of earth resistance of Ea. 1

installation duly stamped and signed by agency

and officer Incharge has to ensure the value of

earthing resistane mentioned in test Certificate)

& having back filling compound of (B) Inner

chemical (CCM Compound)- Resistivity:- 0.2 ohm

/ meter testing as per IEC 62561-2017, Voltage

drop:- <1 volt at no load & dry form, Sulphar

content:- <2% (C) Back fill Compound:- Earthing

compound should be capable to retain moisture

for long time Necessary test report must be

submitted by Agency.[A] For electrical installation

up to 440 VLength of Pipe - 1 MtrBack filling

compound - 1 Nos. of Bag of 15 Kgs.

Same as Above For –

[B] For Electrical installation up to 11 KV located

8.2 in other than normal soil i.e. Soft Rock, Marshy Ea. 1

Soil etc.-Length of Pipe : 2 mtr-Back filling

Compound :1 no. Bag of 25 Kg.

Same as Above For –

[C] For Electrical Installation covering

Transformer Neutrals, Lightning arrester

Earthing, A.C. Plant & Sensitive Computer

8.3 System(like Automation, SCADA) i.e. independent Ea. 1

Earthing located in other than normal soil i.e.

Soft Rock, Marshy Soil etc.

-Length of Pipe : 3 Mtrs.

-Back filling Compound : 2 nos Bags of 25 Kg.

Providing one bag of 25 Kg. Additional Back

9.0 Filling Compound (BFC) suitable for safe earthing Ea. 1

Supplying & Erecting funnel type earthing having

earth plate of following size burred in specifically

prepared earth pit 3 mtr. below ground with

kg. charcoal and salt with alternate layers of

charcoal & salt, 20mm.dia. G.I. pipe with Funnel

with a wire mesh for watering & bricks masonry

block, C.I. Cover complete as per para 7.3 of IS

10.1 3043 with necessary length of double Galvanised Ea. 1

Iron / copper earth wire No 6 SWG bolted with

lug to the plate and covered in 12 mm dia. G.I.

pipe 2.5 mtr long complete connected to the

nearest switch gear with end socket as per

direction & duly tested by earth tester confirming

to IS (As per drawing) with following specification

(A) With 30 x 30 x 0.35 cms: C.I. earth plate

Same as Above For –

(B) With 45 x 45 x 0.35 cms. C.I. earth plate

Same as Above For –

(C) with 60 x 60x 0.315 cms. Copper earth Plate

ADD Extra for excavation in Semi hard rock

11.0 (Murrum) by dry and wet blasting and chiselling Ea. 1

for funnel type earthing of above

providing and erecting Cast iron earth plate size

30 X 30 X 0.35 cms. buried in specially prepared

2.5 Mtr. deep earth pit complete with necessary

G.I. strip in G.I. pipe 2 Mtr. long with coupling

and G.I. plug for earthing of switch gear, conduit

run or power plug etc.

providing and erecting Cast iron earth plate

size 45 X 45 X 0.35 cms. buried in specially

prepared 2.5 Mtr. Deep earth Pit complete with

necessary G.I. strip in G.I. pipe 2 Mtr. long with

coupling and G.I. plug for earthing of switch

gear, conduit run or power plug etc.

Estimated Amount in Rs.

Final Estimatet Amount(Including GST) in Rs.

I/We am/are willing to carry out work at ____________% above or

____________% Below the estimated cost mentioned above.

NOTE:- The Quoted Rate Shall be Inclusive of all taxes.

Signature of the Tenderer Addl. Chief Engineer

Name : (Electrical)

Company’s seal Date : AMC