Amendment No. 1 to tender documents dated 04.04.2013 … · 17 BOQ/Bill of Quantity (Part- B)/Page...

Amendment No. 1 to tender documents dated 04.04.2013.

Sub. : Tender: Supply, Erection, Testing and Commissioning of VRF (Variable Refrigerant Flow) Air Conditioning System work for various schools at University campus at Khadaganchki Village Aland Taluka Gulbarga District in Karnataka.

Tender No.:- RITES/CO/B&A/ EE/CUK - Gulbarga/VRF/P-II/E- 4/2013.

Table No- 1:- Pertaining to Tender Documents

S. No.

Reference/ Page No. / Clause No.

As per tender Document Amended and to be read as:-

1 NIT/2f & 2g/ page No. 6

f) Date of Tender submission: 14:00 Hrs on 12.04.2013.

g) Date of Tender opening: 14:30 Hrs on 12.04.2013.

f) Date of Tender submission: up to 14:00 Hrs on 17.04.2013.

g) Date of Tender opening: 14:30 Hrs on 17.04.2013.

2 Part-I Technical Bid /Section-4, Schedule A-F/Page No.77

Clause 10A i) Whether Material Testing Laboratory is to be provided at site. NO

Clause 10A i) Whether Material Testing Laboratory is to be provided at site. NO, But all measuring equipment/instruments like 1) Multimeter, 2) Vernier Caliper, 3) Screw Gauge, 4) Measuring Tape etc which are required to check/measure the work on frequent basis at site.


Designation Discipline to which should belong

Number

Principle Technical representative

Electrical 1

Technical Representative

Electrical/Mechanical

1

Engineers Electrical 2

Designation

Discipline to which should belong

Number

Principle Technical representative

Electrical Nil

Technical Representative

Electrical/Mechanical

1

Engineers Electrical/ Mechanical

1


Clause 46 Whether Clause 46.11.1A applicable NO Whether Clause 46.13A applicable NO

Clause 46 Whether Clause 46.10 applicable YES Whether Clause 46.11.1A applicable NO Whether Clause 46.13A applicable NO

5 Part-I Technical Bid /Section-5, Technical Specification clause No.1.2/Page

Compressor installed in each modular outdoor unit shall be equipped with multi inverter compressors for higher reliability, improved life, better backup and duty cycling purpose. The system shall be capable of changing the rotating speed of inverter compressor by

The Configuration of inverter and constant speed compressors in the ODU shall be as per manufacturer’s standards.

No.85 inverter controller to follow variations in cooling load

5/A

Part-I Technical Bid /Section-5, Technical Specification clause No.1.3/Page No.86

Outdoor Units shall be able to operate over a range of Outdoor Ambient Temperatures up to 500 C

The ODU and IDU shall be operate over a range of Outdoor Ambient Temperatures up to 480 C.

6 Part-I Technical Bid /Section-5, Technical Specification clause No.1.3/Page No.86

The outdoor units should have anti-corrosion paint free galbarium base plate for easy mounting of unit.

The painting of ODU and IDU shall be as per manufactures standards.

7 Part-I Technical Bid /Section-5, Technical Specification clause No.3.3/Page No.87 and BOQ item No.2/Page No.11

All Indoor Units shall have very low noise, not exceeding the prescribed limit as per norms and standard practice for maximum capacity and size. The Noise Level for the rooms indoor unit shall be not exceeding 38DB.

The noise level of indoor unit at highest operating level shall not exceed 49db (A) at a vertical distance of 1.5m below the units with duct connected to unit.

8 Part-I Technical Bid /Section-5, Technical Specification clause No.1.3/Page No.87

• All Equipment located outdoors

shall withstand Rain, Wind, and

Solar Radiation as prevalent in

Tropical Countries.

• The Casing, etc. shall be suitably UV Stabilized.

All equipments shall be as per manufacturer’s standards.

9 BOQ item No.1/Page No.11

Module total capacity is 388HP.

System -1 – 18 HP

System -2 – 70 HP

System -3 – 80 HP

Module total capacity is 1766 HP.

System -1 – 18 HP Cooling type only.

System -2 –70 HP Cooling type only.

System -3 – 80HP Cooling type only.


The indoor unit capacity shall be

rated at 24 deg. C DB and 18deg C

WB

The indoor units capacities are nominal

based on inside 27 deg C DB and 19 deg

C WB and ambient 35 deg C DB and

24deg C WB.


Capacity 11.0 TR with R-407C

refrigerant

Capacity 5.5TR with R-407C

refrigerant

Capacity 11.0 TR with R-407C/R-410A

refrigerant

Capacity 5.5TR with R-407C/R-410A

refrigerant


Supply testing of cordless remote

control

Supply testing of corded remote control.


Indoor Units Bidder has to quote against the specific

BOQ item only. Capacities mentioned are

the minimum required capacities.

However, the bidder can offer the next

higher size unit (if the required/specified

capacity unit is not manufactured by them)

against that particular item without any

extra cost.


Supply, Installation, Testing &

Commissioning of 6A Switch & 3 Pin

socket outlet on surface or in recess,

suitable for complete as required.

Supply, Installation, Testing &

Commissioning of 5/6A Switch & 3 Pin

socket outlet on surface or in recess.

15 BOQ item No.30/Page No.16/Note 1.

The Main power supply for HVAC

units 3P – 5A MCB or switch &

Socket for each indoor unit will be

provided within 1 meter near the

indoor unit,

The Main power supply for HVAC units 1P

– 5/6A MCB or switch & Socket for each

indoor unit will be provided within 1 meter

near the indoor unit,

16 BOQ item No.30/Page No.16/Note 1.

4P- MCB near to each outdoor

system shall be provided near the

outdoor unit. There after power

distribution to the vendor’s outdoor

unit shall be executed by the HVAC

contractor. The interconnecting

cabling from the MCB to the indoor

unit shall be executed by the HVAC

Contractor.

Power distribution from LT panel to the

VRF outdoor units shall be executed by

the HVAC contractor.

17 BOQ/Bill of Quantity (Part- B)/Page No.17

All inclusive Comprehensive

Operation & Maintenance contract of

VRF System only for the period of

four year after the completion of

Defect Liabilities Period.

All inclusive Comprehensive Operation &

Maintenance contract of VRF System only

for the period of four year after the

successful completion of Defect Liabilities

Period of one year.

18 BOQ/Bill of Quantity (Part- B)/Page No.17

a.1st year after warranty period

b.2 d year after warranty period

c.3 rd year after warranty period

d.4th year after warranty period

a.1st year after successful completion of

defect liability period

b.2nd year after successful completion of


c.3 rd year after successful completion of


d.4th year after successful completion of


19 BOQ/Bill of Quantity (Part- B)/Page No.17/Note-1

VRF system for the next 4 year after

completion of 1st one year of defect

liability period.

VRF system for the next 4 year after

successful completion of 1st one year of

defect liability period.

20 BOQ/Bill of Quantity (Part- B)/Page No.17/Heading

BILL OF QUANTITY (Part-B) BILL OF QUANTITY (Part-B) (Optional

Item)

Table No- 2:- Pertaining to General Modifications

1 Work Experience The VRF equipments manufacturers mentioned/ specified in the list of approved makes of this tender shall be considered meeting the eligibility criteria of work experience given in tender documents. However, any bidder other than approved VRF manufacturers shall have to fulfill the stipulated tender criteria of work experience.

2 Approved make for ERV/HRW – Energy Recovery Ventilator.

Acceptable makes are DRI / Edgetech / Zeco.

3 Indoor Units Indoor units up to and including 2.0TR indoor units shall be Lo-

Static units and above 2 TR indoor units shall be high static.

4 Heat load calculations Heat Load Calculation - Enclosed with this amendment in pages 20 nos. This is for the reference to the bidders.

Clarifications asked by bidders:

S.No Description Clarification asked by bidder/Queries Reply/Answer

1. Section-5, Technical Specification clause No.1.2

It is mentioned that each modular outdoor unit shall be equipped with multi inverter compressors while in clause no.1.3, it is mentioned that each outdoor unit shall have minimum one number variable capacity scroll compressor. We would request you to kindly allow configuration of inverter and constant speed compressors in any given ODU as per manufacturer’s standards.

Refer Amendment No.1


It is specified that Outdoor Units shall be able to operate over a range of Outdoor Ambient Temperatures upto 50 Deg C. We would request to kindly allow the permissible limit upto 48 Deg C which is the operating range with all VRF manufacturers. Moreover in city like Bangalore , general ambient temperature does not go as high as 50 Deg C.



It is specified that the outdoor units and indoor unit should have anti-corrosion treatment. We request you to kindly allow as per manufacturers standards.



It is specified that the noise level of unit at the highest operating level shall not exceed 49 dB(A), at a vertical distance of 1.5 m below the units with duct connected to the unit. While in the tender boq it is specified that the noise level for the room’s indoor unit shall not be exceeding 38 dB. We request you to kindly allow noise level of indoor and outdoor units as per the manufacturers standards.



It is specified that All the Equipments located outdoors shall withstand Rain, wind, and solar radiation as prevalent in tropical conditions and casing etc to be suitably UV stabilized. We request you to kindly allow the same as per the manufacturers’ standards.


6. BOQ – Item no.1, Outdoor Unit

Please guide us that wether we shall quote for cooling only outdoor unit or heating-cooling both options outdoor unit (heat pump type). In specifications of this item it is specified that module total capacity is 388 HP. We would request you to please guide us on the same.

Outdoor units with Cooling Only mode will be accepted.

7 BOQ, item no.2 – Indoor unit

It is specified that Indoor unit capacity shall be rated at 24 Deg C DB and 18 Deg C WB. We request you to kindly guide us that whether the specified capacities in BOQ for indoor units are nominal capacities i.e. inside 27 Deg C DB / 19 Dec C WB and ambient 35 Deg C DB / 24 Deg C WB or are actual capacities. In general nominal capacities are specified in BOQ.



We request you to kindly allow a tolerance of +/- 8 % in specified capacities enabling manufacturers to quote closest indoor units capacities as per their manufacturers standards. Beyond this tolerance level we shall be quoting next higher capacity available with us.

Not agreed and hence tender conditions will hold good.


We would request to kindly guide us that whether units up to 2 TR are to be low static.



We would like to highlight that for Ceiling suspended air cooled ductable split units most manufacturers offer these units with R-22 refrigerant. We would request you to kindly allow usage of this refrigerant against this item. Specification of this item is only covering “Supply” aspect. We would request you to kindly cover installation, testing and commissioning aspect as well in this item or guide us as applicable.


11 BOQ, item no.4 and 8 It is specified that all refrigerant piping insulation shall be finished with polyshield coating. Please guide us whether the complete refrigerant piping insulation is to be polyshield coated or it is only exposed piping that has to be

Complete refrigerant piping shall have polyshield coating.

considered for polyshield coating.

12 BOQ, item no.6 – BOQ. It is specified that on site assembly of the unit is not acceptable. We would like to highlight that as the assembly at site or factory depends on the manufacturing standards of ERV suppliers, so we request you to kindly allow the same as per manufacturing standards of ERV Suppliers.

On site assembly of ERV Units are not acceptable.

13 BOQ, item no.7 – cordless remote.

We would request you to kindly allow supply of corded remote against this item which goes well with a ductable indoor unit kind of application.


CENTRAL UNIVERSITY OF KARNATAKA - GULBARGA

PROJECT: FLOOR: AC FOR:DATE:PREPARED BY

Area 609 Sqft Summer DB %RH WB GR/LbAHU room area 0 Sqft Outside 105 77 93Full height 12.0 ft Inside 75 50 64F/c height 0 ft Difference 30 29By pass factor 0.12

1 Ventilation or InfiltrationPeople (not smoking) 40 x 5 200 Area- 609 x 0.06 36.54 Total cfm 237

2 Internal space sensible heat gain 75/50Structure Sqft. x Factor x T.D Btu/hr SHR 1 0.92 0.84 0.78Wall (N) 0 x 0.34 x 19 0 ADP 55.2 54 52 50Wall (S) 426 x 0.34 x 31 4490Wall (E) 0 x 0.34 x 33 0Wall(W) 0 x 0.34 x 27 0Sunglass(N) 0 x 0.56 x 39 0Sunglass(S) 80 x 0.56 x 11 493Sunglass(E) x 0.56 x 11 0 Apparatus Dew Point 53 FSunglass(W) 0 x 0.56 x 158 0All glass 80 x 1.13 x 30 2712 Dehumidified Air Qty 1941 cfmPartition 1050 x 0.3 x 25 7875Ceiling 609 x 0.4 x 25 6090 Refrigeration Capacity 56998 Btu/hrFloor 0 x 0.4 x 25 0Roof 0 x 0.55 x 53 0Ventilation 237 x 0.1296 x 30 920 Capacity 4.75 TRPeople (active) 40 x 230 x 1 9200Equipment load (KW) 0.5 x 1000 x 3.41 1705Lights (W) 609 x 1 x 4.26 2596AHU fan Load 0 x 1000 x 3.41 0Sensible heat sub total 36080 Capacity with 3% margin 4.9 TRSafety (12.5%) 4510Total space sensible heat gain 40590

3 Internal space latent heat gain Ventilation 237 x 0.080 x 29 552 IDU Selected :People (active) 40 x 120 x 1 4800Latent heat sub total 5352Safety (5%) 268Total space latent heat gain 5619

4 Total Space heat 462105 Sensible Heat Ratio 0.886 Ventilation air heat 10789

2 Nos 2.5 TR CONCEALED

Air conditioning ‐ Heat load formatGULBARGA UNIV

GROUNDCLASROOM412/12/2010

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2 Internal space sensible heat gain 75/50Structure Sqft. x Factor x T.D Btu/hr SHR 1 0.92 0.84 0.78Wall (N) 0 x 0.34 x 19 0 ADP 55.2 54 52 50Wall (S) 0 x 0.34 x 31 0Wall (E) 0 x 0.34 x 33 0Wall(W) 0 x 0.34 x 27 0Sunglass(N) 40 x 0.56 x 39 874Sunglass(S) 40 x 0.56 x 11 246Sunglass(E) x 0.56 x 11 0 Apparatus Dew Point 54.5 FSunglass(W) 40 x 0.56 x 158 3539All glass 120 x 1.13 x 30 4068 Dehumidified Air Qty 943 cfmPartition 330 x 0.3 x 25 2475Ceiling 198 x 0.4 x 25 1980 Refrigeration Capacity 20151 Btu/hrFloor 0 x 0.4 x 25 0Roof 0 x 0.55 x 53 0Ventilation 24 x 0.1296 x 30 92 Capacity 1.68 TRPeople (active) 3 x 245 x 1 735Equipment load (KW) 0.5 x 1000 x 3.41 1705Lights (W) 144 x 1 x 4.26 614AHU fan Load 0 x 1000 x 3.41 0Sensible heat sub total 16328 Capacity with 3% margin 1.7 TRSafety (12.5%) 2041Total space sensible heat gain 18369





GROUNDASST PROFESSOR2

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GROUNDASST PROFESSOR1

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1 Ventilation or InfiltrationPeople (not smoking) 5 x 5 25Area- 196 x 0.06 11.76 Total cfm 37

2 Internal space sensible heat gain 75/50Structure Sqft. x Factor x T.D Btu/hr SHR 1 0.92 0.84 0.78Wall (N) 97 x 0.34 x 19 627 ADP 55.2 54 52 50Wall (S) 97 x 0.34 x 31 1022Wall (E) 0 x 0.34 x 33 0Wall(W) 205 x 0.34 x 27 1882Sunglass(N) 40 x 0.56 x 39 874Sunglass(S) 40 x 0.56 x 11 246Sunglass(E) 0 x 0.56 x 11 0 Apparatus Dew Point 54 FSunglass(W) 0 x 0.56 x 158 0All glass 80 x 1.13 x 30 2712 Dehumidified Air Qty 996 cfmPartition 590 x 0.3 x 25 4425Ceiling 198 x 0.4 x 25 1980 Refrigeration Capacity 22729 Btu/hrFloor 0 x 0.4 x 25 0Roof 0 x 0.55 x 53 0Ventilation 37 x 0.1296 x 30 143 Capacity 1.89 TRPeople (active) 5 x 245 x 1 1225Equipment load (KW) 0.5 x 1000 x 3.41 1705Lights (W) 196 x 1 x 4.26 835AHU fan Load 0 x 1000 x 3.41 0Sensible heat sub total 17676 Capacity with 3% margin 2.0 TRSafety (12.5%) 2210Total space sensible heat gain 19886





GROUNDPROFESSOR12/12/2010

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2 Internal space sensible heat gain 75/50Structure Sqft. x Factor x T.D Btu/hr SHR 1 0.92 0.84 0.78Wall (N) 0 x 0.34 x 19 0 ADP 55.2 54 52 50Wall (S) 0 x 0.34 x 31 0Wall (E) 0 x 0.34 x 33 0Wall(W) 0 x 0.34 x 27 0Sunglass(N) 40 x 0.56 x 39 874Sunglass(S) 0 x 0.56 x 11 0Sunglass(E) 0 x 0.56 x 11 0 Apparatus Dew Point 54 FSunglass(W) 80 x 0.56 x 158 7078All glass 120 x 1.13 x 30 4068 Dehumidified Air Qty 2470 cfmPartition 2500 x 0.3 x 25 18750Ceiling 198 x 0.4 x 25 1980 Refrigeration Capacity 58487 Btu/hrFloor 0 x 0.4 x 25 0Roof 0 x 0.55 x 53 0Ventilation 124 x 0.1296 x 30 483 Capacity 4.87 TRPeople (active) 15 x 245 x 1 3675Equipment load (KW) 1 x 1000 x 3.41 3410Lights (W) 820 x 1 x 4.26 3495AHU fan Load 0 x 1000 x 3.41 0Sensible heat sub total 43813 Capacity with 3% margin 5.0 TRSafety (12.5%) 5477Total space sensible heat gain 49290



2 Nos 4.0 TR DUCTABLE


GROUNDDEAN

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2 Nos 4.0 TR DUCTABLE


GROUNDDEAN

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1 Nos 1.5 TR Concealed


GROUNDXEROX AND STATIONERY

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2 Internal space sensible heat gain 75/50Structure Sqft. x Factor x T.D Btu/hr SHR 1 0.92 0.84 0.78Wall (N) 315 x 0.34 x 19 2035 ADP 55.2 54 52 50Wall (S) 315 x 0.34 x 31 3320Wall (E) 395 x 0.34 x 33 4432Wall(W) 395 x 0.34 x 27 3626Sunglass(N) 0 x 0.56 x 39 0Sunglass(S) 0 x 0.56 x 11 0Sunglass(E) 160 x 0.56 x 11 986 Apparatus Dew Point 53 FSunglass(W) 160 x 0.56 x 158 14157All glass 320 x 1.13 x 30 10848 Dehumidified Air Qty 4893 cfmPartition 0 x 0.3 x 25 0Ceiling 1196 x 0.4 x 25 11960 Refrigeration Capacity 149716 Btu/hrFloor 0 x 0.4 x 25 0Roof 0 x 0.55 x 53 0Ventilation 672 x 0.1296 x 30 2612 Capacity 12.48 TRPeople (active) 120 x 230 x 1 27600Equipment load (KW) 2 x 1000 x 3.41 6820Lights (W) 1196 x 0.5 x 4.26 2549AHU fan Load 0 x 1000 x 3.41 0Sensible heat sub total 90944 Capacity with 3% margin 12.9 TRSafety (12.5%) 11368Total space sensible heat gain 102312



4 Nos 4 TR Ductable


GROUNDLECTURE HALL

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Area 800 Sqft P DB %RH WB GR/LbAHU room area 0 Sqft Outside 105 77 93Full height 12.0 ft Inside 75 50 64F/c height 0 ft Difference 30 29By pass factor 0.12

1 Ventilation or InfiltrationPeople (not smoking) 30 x 7.5 225 Area- 800 x 0.18 144 Total cfm 369




2 Nos 5.5 TR Ductable


GROUNDDINNING AND PANTRY

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1 Ventilation or InfiltrationPeople (not smoking) 300 x 5 1500 Area- 4050 x 0.06 243 Total cfm 1743

2 Internal space sensible heat gain 75/50Structure Sqft. x Factor x T.D Btu/hr SHR 1 0.92 0.84 0.78Wall (N) 0 x 0.34 x 19 0 ADP 55.2 54 52 50Wall (S) 1632 x 0.34 x 31 17201Wall (E) 1872 x 0.34 x 33 21004Wall(W) 0 x 0.34 x 27 0Sunglass(N) 0 x 0.56 x 39 0Sunglass(S) 240 x 0.56 x 11 1478Sunglass(E) 0 x 0.56 x 11 0 Apparatus Dew Point 53 FSunglass(W) 0 x 0.56 x 158 0All glass 240 x 1.13 x 30 8136 Dehumidified Air Qty 15062 cfmPartition 3500 x 0.3 x 25 26250Ceiling 0 x 0.4 x 25 0 Refrigeration Capacity 436505 Btu/hrFloor 0 x 0.4 x 25 0Roof 4050 x 0.55 x 53 118058Ventilation 1743 x 0.1296 x 30 6777 Capacity 36.38 TRPeople (active) 300 x 230 x 1 69000Equipment load (KW) 1 x 1000 x 3.41 3410Lights (W) 4050 x 0.5 x 4.26 8632AHU fan Load 0 x 1000 x 3.41 0Sensible heat sub total 279945 Capacity with 3% margin 37.5 TRSafety (12.5%) 34993Total space sensible heat gain 314939



4 Nos 11 TR Ductable


GROUNDAUDITORIUM12/12/2010

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1 Ventilation or InfiltrationPeople (not smoking) 24 x 5 120 Area- 1150 x 0.06 69 Total cfm 189

2 Internal space sensible heat gain 75/50Structure Sqft. x Factor x T.D Btu/hr SHR 1 0.92 0.84 0.78Wall (N) 0 x 0.34 x 19 0 ADP 55.2 54 52 50Wall (S) 0 x 0.34 x 31 0Wall (E) 0 x 0.34 x 33 0Wall(W) 480 x 0.34 x 27 4406Sunglass(N) 0 x 0.56 x 39 0Sunglass(S) 0 x 0.56 x 11 0Sunglass(E) x 0.56 x 11 0 Apparatus Dew Point 54.5 FSunglass(W) 40 x 0.56 x 158 3539All glass 40 x 1.13 x 30 1356 Dehumidified Air Qty 3857 cfmPartition 800 x 0.3 x 25 6000Ceiling 0 x 0.4 x 25 0 Refrigeration Capacity 87258 Btu/hrFloor 0 x 0.4 x 25 0Roof 1150 x 0.55 x 53 33523Ventilation 189 x 0.1296 x 30 735 Capacity 7.27 TRPeople (active) 24 x 230 x 1 5520Equipment load (KW) 2 x 1000 x 3.41 6820Lights (W) 1150 x 1 x 4.26 4902AHU fan Load 0 x 1000 x 3.41 0Sensible heat sub total 66801 Capacity with 3% margin 7.5 TRSafety (12.5%) 8350Total space sensible heat gain 75151



3 Nos 4.0 TR DUCTED


FIRST LIBRARY12/12/2010

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Central University Of Karnataka- GulbargaHVAC works Page 1 of 7









FIRST ASST PROF112/12/2010

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FIRST ASST PROF212/12/2010

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2 Internal space sensible heat gain 75/50Structure Sqft. x Factor x T.D Btu/hr SHR 1 0.92 0.84 0.78Wall (N) 0 x 0.34 x 19 0 ADP 55.2 54 52 50Wall (S) 0 x 0.34 x 31 0Wall (E) 0 x 0.34 x 33 0Wall(W) 300 x 0.34 x 27 2754Sunglass(N) 0 x 0.56 x 39 0Sunglass(S) 0 x 0.56 x 11 0Sunglass(E) 40 x 0.56 x 11 246 Apparatus Dew Point 54.5 FSunglass(W) 40 x 0.56 x 158 3539All glass 80 x 1.13 x 30 2712 Dehumidified Air Qty 2540 cfmPartition 950 x 0.3 x 25 7125Ceiling 0 x 0.4 x 25 0 Refrigeration Capacity 59300 Btu/hrFloor 0 x 0.4 x 25 0Roof 607 x 0.55 x 53 17694Ventilation 146 x 0.1296 x 30 569 Capacity 4.94 TRPeople (active) 22 x 230 x 1 5060Equipment load (KW) 0.5 x 1000 x 3.41 1705Lights (W) 607 x 1 x 4.26 2587AHU fan Load 0 x 1000 x 3.41 0Sensible heat sub total 43992 Capacity with 3% margin 5.1 TRSafety (12.5%) 5499Total space sensible heat gain 49491





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2 Nos 4.0 TR DUCTED


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2 Nos 4.0 TR DUCTED


FIRST RESEARCH212/12/2010

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Amendment No. 1 to tender documents dated 04.04.2013 … · 17 BOQ/Bill of Quantity (Part- B)/Page...

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Transcript of Amendment No. 1 to tender documents dated 04.04.2013 … · 17 BOQ/Bill of Quantity (Part- B)/Page...