11e411_1

Technical Specification

of

Ground Based Tower of 30, 40 & 50m height (Including Foundation, Earthing System & Aviation Warning Lamp)

Specification No.: UTL/GBT/02-01 OCT 2011

United Telecom Limited (JV of MTNL, TCIL, TCL & NVPL)

Triveni Complex, Putali Sadak, Kathmandu, Nepal Price: NRs. 1130

(Including VAT)

UTL/GBT/02-01 OCT 2011 Page 2 of 44

Technical Specification

of

Ground Based Tower of 30, 40 & 50m height (Including Foundation, Earthing System & Aviation Warning Lamp)

Specification No.: UTL/GBT/02-01 OCT 2011

United Telecom Limited (JV of MTNL, TCIL, TCL & NVPL)

Triveni Complex, Putali Sadak, Kathmandu, Nepal


Table of Contents

Chapter Title Page

1. General Specifications 4

2. Bill of Materials of Towers & Foundation 11

3. Earthing System & Lightening Arrestor 40

4. Aviation Warning Lamp 43

5. Key Diagrams 44


Chapter-1

General Specifications

1.0 Introduction

This document contains the generic requirements of 50, 40 and 30 m Ground Based

Tower for Cellular wireless systems etc. The towers shall be four legged and able to sup-

port the loading of the antennas as given below:

a. 6 Nos. of panel antennas for cellular wireless systems at 35m from ground level for

40 & 50m GBT. In case of 30m GBT, 6 Nos. of panel antennas for cellular wireless

systems at 1m from the top.

b. 2 Nos. of 2.4m solid parabolic antenna at 2.5m from the top.

c. 1 Nos. of 1.8m solid parabolic antenna at 2.5m from the top.

d. 2 Nos. of 1.2m solid parabolic antenna at 8m from the top.

e. 4 Nos. of 0.6m solid parabolic antenna at 8m from the top.

f. 3 Nos. of 1.8m solid parabolic antenna at 10m from the top.

1.1 Other parameter for designing of Ground Based Towers shall be as under

a. Factor of Safety = 1.5

b. Basic Wind Speed = 180 Km/hr

c. Terrain Category = 2

d. Tower twist and sway is found to be less than 0.5 deg @ 75% of basic wind speed.

2.0 Detailed Technical Requirements

2.1 Type of Tower

Four legged 50m, 40m and 30m ground base tower with square base.

2.2 Height of Tower

50m, 40m and 30m as per drawing attached.

2.3 Foundation

The Raft type of Foundation of the tower has been designed basically for soft soil with

safe bearing capacity of 70KN/ m2 (min).

The foundation reinforcement detail for soft soil is given in Chapter-2.


The back filling should be done by proper compaction of soil in layers & it should be

done before erection of tower.

Material: M-20 grade concrete shall be used. High yield strength deformed steel bars of

grade FE-415 conforming to IS: 456 shall be used. Bending of bars shall be as per IS:

2502 (1963).

Non-galvanizing steel structures such as Anchor bolts etc. should be painted with red

oxide coating. The base plates should be galvanized as some portion of them may be di-

rectly exposed to environment.

2.4 Super Structure

2.4.1 Legs/ Bracings

Material: MS angles of grade A as per IS 2062, IS: 808 (1989) shall be used.

Finish: All MS angles are to be hot dip galvanized as per IS: 4759 (1996). Zinc for gal-

vanizing should conform to IS: 13229- 1991 or IS: 209 (1992).

2.4.2 Gusset/ Splice Plates

Material: MS Plates of grade A as per IS 2062 shall be used.

Finish: All the plates are to be hot dip galvanized as per IS: 4759 (1996). Zinc for galva-

nizing should conform to IS: 13229- 1991 or IS: 209 (1992).

2.4.3 Nuts, Bolts & Washers

Material: Nuts and bolts of grade 5.6 as per IS: 6639 (1972), IS: 1364, IS: 1367 part 8

(1992) and plain washers as per IS: 6610 (1972) & spring washers of type B as per IS:

3063 (1994) shall be used.

Finish: Nuts, bolts and Washers are to be hot dip galvanized as per IS: 1367.

2.5 Connection between Vertical Legs and Bracings

Vertical legs and bracings shall be connected to each other at site by gusset/splice plates

with nuts, bolts and washers by user as per design. The design of tower members and

joints shall be in accordance with the relevant provisions in BIS document IS: 800

(1984).

2.6 Fabrication

i. The tower is designed as per IS: 800-1984 and IS: 802 (part-I).

ii. Tolerances in fabrication shall be allowed as per IS: 7215-1974.

iii. All holes shall be punched or drilled with tolerances confirming to IS-1367 part

VIII.


iv. No holes shall be formed by gas cutting.

v. All welding procedures shall be in accordance with IS: 1969.

2.7 Galvanization

i. All steel members to be hot dip galvanized as per IS: 4759, bolts and nuts as per IS-

1367 part VIII.

ii. Minimum coating

Thickness less than 2mm : 43 Micron

Thickness 2mm to 5mm : 65 Micron

Thickness more than 5mm : 85 Micron

2.8 Arrangement for feeder cable rack

One cable rack for running feeder cables from the rear of the antennas up to the Base

Transceiver Station (BTS) equipment shall be provided. Suitable supports shall be pro-

vided for all the feeder cables runs at 825mm each or as per tower designs/ drawings.

Width of each rack shall be 500 mm.

2.9 Ladder

A ladder shall be provided internally for the entire 30/40/50m height of the tower. Hoops

and runners shall be provided to ensure the safety of the persons climbing the tower.

Ladder width/pitch shall be of 500 mm and 300mm respectively. The diameter of safety

hoops shall be 750mm and Guard radius should be 375mm.

3.0 Platforms

Three Working platforms with railing all around shall be provided for mounting panels

and microwave antennas. In addition two, three and four resting platforms for 30 metre,

40 metre and 50 metre respectively shall be provided. The platforms shall be located as

given below:

For 50m tower (internal)

i. 2.5m from the top (working platform)

ii. 7.5m from the top (working platform)

iii. 12.5m from the top(working platform)

iv. 15.0m from the top (resting platform)

v. 23.5m from the top (resting platform)


vi. 31.0m from the top (resting platform)

vii. 40.0m from the top (resting platform)




iii. 12.5m from the top (working platform)



vi. 31.0m from the top (resting platform)




iii. 12.5m from the top (working platform)



4.0 Wind Velocity

Tower shall be operational and able to withstand the wind velocity corresponding to wind

180 Km/Hr of IS: 875 (Part 3) (1987).

5.0 Lightning Arrestor

Lightning arrestor using lightning rod made of copper, with 16 mm diameter and 1200 mm

length as per IS: 613(2000)] with a spike on one end and threading on the other shall be

provided on the top of the tower. Tin coated copper wire IS mark of gauge 50 sq. mm shall

be provided from lower of the lightning rod to the lug with a hole provided at 0.5 m below

the top of the tower. The supply of the material and installation shall be in the scope of the

suppliers.

6.0 Aviation Warning Lamps

Fixing arrangement for twin type aviation warning lights at the top level shall be provided.

Aviation Warning Lamps shall conform to ICAO regulation.


Note:

i. Screened PVC insulated twin copper wire of size 3/22 (IS Marked) will be used

for connection of aviation warning lamp to the power supply.

ii. The aviation warning lamps and Screened PVC insulated twin copper shall be

supplied by tower supplier. The detail specification is attached in Chapter-4.

7.0 Antenna mounting

Antennas- GI pipes, conforming to IS: 1161(1998) with minimum Yst220 Mpa with 65

medium class, 3.0 meter long for cellular wireless system antenna (6 Nos.); NB 80 me-

dium class, 1.0 metre long for 0.6m to 1.2m diameter microwave antenna (6 Nos.) and

NB 100 medium class, 2.0 metre long for 1.8m and 2.4 m microwave antenna (6 Nos.)

along with the fixtures/ clamps for leg mounting should be provided as per details given

in the BoM.

8.0 Verticality

The verticality of tower (i.e. the bottom of the line joining the centre of the top of the

tower and the center of the base) shall be as given in IS: 12843:1989, Table iii (b).

Note: This shall be checked in the field after the erection of the tower at sites.

9.0 Earthing

For earthing of the tower, 50x3mm GI strips should be bounded to the all four tower legs

at the termination of the gusset plate of first joint and connected to ring earth at the other

end. Two plate earthing and ring earthing materials shall be supplied by tower suppliers.

(The maximum value of earth resistance shall be 2.0 Ohm. For more details please refer to

Chapter-3.

10.0 Welding

Welding shall be done as per IS: 9595 (1996) and test for quality of welding will be carried

as prescribed in the test schedule/test procedure. Welding connections of Base Plate shall

be as per IS 800:1984.

11.0 Marking

Manufactures identity marking and item marking shall be provided on each section by

punching & painting for Enabling easy assembly and trace -ability. Smaller elements, on

which complete marking detail are not practicable, shall be supplied in suitable packing

boxes and each box shall be clear marking details such as name of sites, height of the

tower and other details as given above. However, part No. / Item No. shall be marked on

all tower elements. The tower supplier shall also provide the tower component manufac-

turers identity / source. A plate indicating the manufacturers identity, year of manufac-


ture, wind velocity and the maximum load capacity of the tower shall be supplied by the

manufacturer for display at the bottom of the tower. The top horizontal members of the

tower on all the four faces should have center clearly by visibly marked for easy check of

vertically.

12.0 Painting

The tower shall be coloured with alternate bands of orange & white or red and white

paint as per ICAO recommendations. The Ready mixed Paint, Primer, Enamel etc., used

for tower painting, shall be as per the following IS codes:

1. IS 2074(1992): Ready Mixed Paint, Air Drying, Red oxide Zinc Chrome, Priming

Specification;

2. IS 2932(1993): Enamel, Synthetic, Exterior:

a. Undercoating

b. Finishing Specification;

3. IS 2933(1975): Enamel exterior (a) undercoating, (b) finishing; the tower painting

shall be done after tower erection.

13.0 Documentation

Two hard copies and one soft copy of complete documents along with installation details,

in English, shall be supplied by the supplier.

14.0 Weight of Towers

50/40/30 m Tower (Tolerance in weight: 3%)

a. Weight of Tower structures, inclusive of all parts of Superstructure (including base

plate, anchor bolts but excluding the weight of antenna fixtures, nuts, bolts and earth

strip) are 17,477Kg 12,432Kg and 8,215Kg for 50 metres, 40 metres and 30 metres

height of tower respectively.

b. Weight of cellular wireless system antenna mounting arrangement (per antenna):

40.6Kg.

c. Weight of microwave antenna mounting arrangement (per antenna): 31.6 Kg (for 0.6

m to 1.2 m dia.) and 56.9 Kg (for 1.5m to 2.4m dia.).

d. Weight of nuts, bolts and washers for tower structure: 551Kg, 532Kg and 409Kg for

50m, 40m and 30m height of tower respectively.

15.0 Weight of Foundations

50/40/30 m Tower Foundation


a. Weights of steel reinforcement (but excluding RCC) are 3,014.10 Kg, 1,828.37 Kg and

1,340.94 Kg for 50m, 40m and 30m towers respectively.

b. Volumes of RCC M20 grade are 42.02 m, 23.218 m and 15.45m for 50, 40 and 30

metres tower foundation respectively. Volumes of PCC M10 grade are 5.93m, 3.6 m

and 2.5m for 50, 40 and 30 metres tower foundations respectively.

16.0 Bill of Material

The bill of Materials for all the towers is given in Chapter-2.

17.0 Design

The detailed drawing of the tower shall be as per technical specification No.

UTL/GBT/01-01 OCT 2011 of UTL.

Notes:

1. All the major components of material for tower shall be procured from the IS ap-

proved sources and certificate to this affect shall be given by manufacturer.

2. All responsibility for tower erection shall lie with the supplier/erection agency which

shall follow safety norms as per IS 7205(1974)".

3. All IS standards are subject to revision and the most recent editions of the standards

shall be applicable.

4. All unspecified holes in tower members are 17.5mm diameter for 16 mm bolts con-

forming to Class 5.6. All unspecified plates 6 mm thick.

5. Structural steel shall conform to IS 2062 grade-A with minimum yields stress of

2550 kg/ sq. cm.

6. Spring washers are to be used under each nut.

7. Tower accessories include lightening protection system, grounding system (includ-

ing plate earthing and ring earthing), earth strips, ladder, vertical and horizontal

feeder support, antenna mounting structures, working and resting platform.

8. Angular rotation & twist are less than 0.5 and twist is less than 0.5 .

9. Minimum thickness of the members considered is:

Leg members 5 mm

Lattices/ Belts 5 mm

Redundant members 5 mm

10. The foundation bolts at the base of the legs should be monolithic with the concrete in

the foundation.


Chapter-2

Bill of Material for Ground Based Tower

2.1 Bill of Material for 30m Ground Based Tower

Sl. No. Description Marked Section Nos. Length Weight/

piece

Total

Weight

1.

Pan

el 1

3 t

o18

Horizontal 1A L75x5 4 1975 11.3 45.0

1B L75x5 6 1975 11.3 67.5

1B-X L75x5 6 1975 11.3 67.5

1C L75x5 4 1975 11.3 45.0

1C-X L75x5 4 1975 11.3 45.0

Minor Bracing 4 L45x5 40 1063 3.6 144.6

20 L45x5 8 1068 3.6 29.0

Redundant 3 L45x5 40 815 2.8 110.8

5 L45x5 40 871 3.0 118.5

19 L45x5 8 844 2.9 23.0

21 L45x5 8 798 2.7 21.7

Diagonal 6 L65x5 40 3332 16.3 653.1

18 L65x5 4 3276 16.1 64.2

18A L65x5 4 3276 16.1 64.2

Railing flat 9 Fl 50x5 8 1113 2.2 17.8

14 Fl 50x5 4 1113 2.2 8.9

22 Fl 50x5 4 1136 2.3 9.1

Gusset Plate 2 271x201x6 8 271 2.6 20.5

8 271x328x6 32 271 4.2 134.0

16 271x328x6 8 271 4.2 33.5

Splice Cleat angle 12 L90x90x8 4 356 3.8 15.4

13 L90x90x10 4 356 4.8 19.1

Splice Cleat Plat 10 PL 80x351x8 16 351 1.8 28.2

Splice Cleat Pack-

ing Plat 11 PL 50x150x2 16 150 0.1 1.9

Leg 7 L100x8 4 4623 55.9 223.8

15 L100x10 4 4994 74.4 297.6

17 L100x10 4 5050 75.2 301.0

2.

Pan

el 1

0 t

o 1

2

Horizontal 23 L75x5 1 2223 12.7 12.7

23X L75x5 1 2223 12.7 12.7

23A L75x5 1 2223 12.7 12.7

23A-X L75x5 1 2223 12.7 12.7

37 L65x5 1 2408 11.8 11.8

37-X L65x5 1 2408 11.8 11.8

37A L65x5 2 2408 11.8 23.6

Minor Bracing 27 L45x5 8 1110 3.8 30.2

32 L45x5 8 1211 4.1 32.9

Redundant 26 L45x5 8 827 2.8 22.5



piece

Total

Weight

28 L45x5 8 843 2.9 22.9

31 L45x5 8 877 3.0 23.9

33 L45x5 8 889 3.0 24.2

41 L45x5 8 784 2.7 21.3

42 L45x5 8 1606 5.5 43.7

43 L45x5 8 1743 5.9 47.4

44 L45x5 8 739 2.5 20.1

45 L45x5 4 952 3.2 12.9

Diagonal 25 L65x5 4 3385 16.6 66.3

25A L65x5 4 3385 16.6 66.3

34 L65x5 4 3576 17.5 70.1

34A L65x5 4 3576 17.5 70.1

40 L65x5 4 4496 22.0 88.1

40A L65x5 4 4496 22.0 88.1

Gusset Plate 24 PL161x436x8 4 436 4.4 17.6

24X PL161x436x8 4 436 4.4 17.6

29 PL155x314x8 8 314 3.1 24.5

38 PL215x288x8 8 215 3.9 31.1

Splice Cleat Angle 36 L110x110x10 4 470 7.8 31.2

Splice Cleat Plate 35 PL120x470x8 8 120 3.5 28.3

Leg 30 L130x130x12 4 5175 121.6 486.5

39 L130x130x12 4 3650 85.8 343.1

3.

Pan

el 8

to

9

Horizontal 47 L75x5 1 2688 15.3 15.3

47-X L75x5 1 2688 15.3 15.3

47A L75x5 1 2688 15.3 15.3

47A-X L75x5 1 2688 15.3 15.3

58 L65x5 1 2981 14.6 14.6

58-X L65x5 1 2981 14.6 14.6

58A L65x5 2 2981 14.6 29.2

Redundant 50 L45x5 8 890 3.0 24.2

51 L45x5 8 1630 5.5 44.3

52 L45x5 8 1741 5.9 47.4

53 L45x5 8 837 2.8 22.8

54 L45x5 4 1071 3.6 14.6

361 L45x5 8 974 3.3 26.5

362 L45x5 8 1423 4.8 38.7

363 L45x5 8 1517 5.2 41.3

364 L45x5 8 835 2.8 22.7

Diagonal 49 L65x5 4 4685 23.0 91.8

49A L65x5 4 4685 23.0 91.8

360 L65x5 4 4516 22.1 88.5

360A L65x5 4 4516 22.1 88.5




piece

Total

Weight

59 PL225x235x8 8 225 3.3 26.6

68 PL225x255x8 8 225 3.6 28.8

78 PL205x401x8 8 205 5.2 41.3



Leg 46 L150x150x12 4 3750 102.4 409.5

366 L150x150x12 4 3112 85.0 339.8

4. Stump S30 L150x150x12 4 620 16.9 67.7

5. Base Plate B30 PL450x450x25 3 450 39.7 119.2

6. Foundation Bolt Rod 25 48 1400 5.5 262.1

7.

Lad

der

Su

pp

ort

Ladder support LS1 L65x5 2 2217 10.9 21.7

LS1X L65x5 2 2217 10.9 21.7

LS2 L65x5 3 2217 10.9 32.6

LS2X L65x5 3 2217 10.9 32.6

LS3 L65x5 1 2219 10.9 10.9

LS4 L65x5 1 2219 10.9 10.9

LS5 L65x5 1 2666 13.1 13.1

LS5X L65x5 1 2666 13.1 13.1

LS6 L75x5 1 2975 17.0 17.0

LS7 L75x5 1 2975 17.0 17.0

LS8 L65x5 1 3278 16.1 16.1

LS8X L65x5 1 3278 16.1 16.1

8.

Pla

tfo

rm

Platform P1 Fl 50x4 12 542 0.9 10.4

P2 L45x5 12 739 2.5 30.2

P3 Mesh 2217x844 6 2217 20.6 123.5

P4 Fl 50x4 6 1825 2.9 17.5

P5 Fl 50x4 12 256 0.4 4.9

P6 Fl 50x4 6 2217 3.5 21.3

P7 Mesh 2219x845 1 2219 20.6 20.6

P8 Fl 50x4 1 2219 3.6 3.6

P9 Fl 50x4 2 186 0.3 0.6

P10 Fl 50x4 2 591 0.9 1.9

P11 L45x5 1 789 2.7 2.7

P12 L45x5 1 789 2.7 2.7

P13 Fl 50x4 1 1923 3.1 3.1

P14 Mesh 720x974 1 720 7.7 7.7

P15 Fl 50x4 2 720 1.2 2.3

P16 Fl 50x4 3 874 1.4 4.2

P17 L45x5 1 720 2.4 2.4

P18 L65x5 1 720 3.5 3.5

P19 L65x5 1 720 3.5 3.5

P20 L75X5 1 2975 17.0 17.0

P21 PL125X170X6 4 125 1.0 4.0

P22 L65x5 2 1197 5.9 11.7

P22X L65x5 2 1197 5.9 11.7



piece

Total

Weight

P23 Fl 50x4 1 794 1.3 1.3

P24 L50X5 1 794 3.0 3.0

P25 PL125X170X6 2 125 1.0 2.0

P26 L65x5 1 1193 5.8 5.8

P26X L65x5 1 1193 5.8 5.8

P27 Fl 50x4 2 729 1.2 2.3

P28 L50X5 2 729 2.8 5.5

P29 Fl 50x4 1 324 0.5 0.5

P30 L50X5 1 324 1.2 1.2

P31 L75X6 1 3608 24.5 24.5

9.

Ladder L1

L1L L50X50X4 1 2697 8.1 8.1

L1R L50X50X4 1 2697 8.1 8.1

ROD16 R16 DIA 9 510 0.8 7.3

CR1 FLAT 40X4 3 2024 2.6 7.9

CF1 FLAT 40X4 3 2419 3.1 9.4

10.

Ladder L2

L2L L50X50X4 1 3894 11.7 11.7

L2R L50X50X4 1 3894 11.7 11.7

ROD16 R16 DIA 13 510 0.8 10.6

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 1 1032 1.3 1.3

CF2 FLAT 40X4 2 3788 4.9 9.8

CF2A FLAT 40X4 1 2615 3.4 3.4

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 6 166 0.2 1.3

11.

Ladder L3

L3L L50X50X4 1 5086 15.3 15.3

L3R L50X50X4 1 5086 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF3 FLAT 40X4 2 5192 6.7 13.5

CF3A FLAT 40X4 1 2040 2.7 2.7

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

12.

Ladder L4

L4L L50X50X4 1 5111 15.3 15.3

L4R L50X50X4 1 5111 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 4 2024 2.6 10.5

CR2 FLAT 40X4 1 1032 1.3 1.3

CF4 FLAT 40X4 2 5111 6.6 13.3

CF4A FLAT 40X4 1 3527 4.6 4.6

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.0



piece

Total

Weight

13.

Ladder L5

L5L L50X50X4 1 4786 14.4 14.4

L5R L50X50X4 1 4786 14.4 14.4 ROD16 R16 DIA 16 510 0.8 13.1

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF5 FLAT 40X4 2 4786 6.2 12.4

CF5A FLAT 40X4 1 2507 3.3 3.3

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 6 166 0.2 1.3

14.

Ladder L306

L306L L50X50X4 1 5911 17.7 17.7

L306R L50X50X4 1 5911 17.7 17.7

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 4 2024 2.6 10.5

CF306 FLAT 40X4 3 3333 4.3 13.0

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 6 166 0.2 1.3

15.

Cable Ladder CL1

CL1L L50X50X4 1 2697 8.1 8.1

CL1R L50X50X4 1 2697 8.1 8.1

CLF FLAT 40X4 4 480 0.6 2.5

16.

Cable Ladder CL2

CL2L L50X50X4 1 3894 14.8 14.8

CL2R L50X50X4 1 3894 14.8 14.8

CLF FLAT 40X4 4 480 0.6 2.5

SA1 L65X65X5 2 206 0.0

17.

Cable Ladder CL3

CL3L L50X50X4 1 5086 15.3 15.3

CL3R L50X50X4 1 5086 15.3 15.3

CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

18.

Cable Ladder CL4

CL4L L50X50X4 1 5111 15.3 15.3

CL4R L50X50X4 1 5111 15.3 15.3

CLF FLAT 40X4 7 480 0.6 4.4

SA1 L65X65X5 2 206 1.0 2.0

19.

Cable Ladder CL5

CL5L L50X50X4 1 4786 14.4 14.4

CL5R L50X50X4 1 4786 14.4 14.4

CLF FLAT 40X4 5 480 0.6 3.1

SA1 L65X65X5 2 206 1.0 2.0

20.

Cable Ladder CL6

CL6L L50X50X4 1 5911 17.7 17.7

CL6R L50X50X5 1 5911 22.5 22.5



piece

Total

Weight

CLF FLAT 40X4 7 480 0.6 4.4

SA1 L65X65X6 2 206 1.2 2.4

21.

Horizontal cable

Ladder

HL6L L50X50X4 1 5111 15.3 15.3

HL6R L50X50X5 1 5111 19.4 19.4

CLF FLAT 40X4 14 480 0.6 8.7

Pipe NB50M 6 3000 15.3 91.8

Angle L65X65X6 3 600 3.5 10.4

22.

Foundation Tem-

plate

Main angle

L65x5 4 3158 15.5 61.9

Corner angle

L50x5 4 2170 8.2 33.0

Plate

Pl 550x550x10 4 450 15.9 63.6

Nut Bolt

L/S

5.0

Total Weight of Tower 8215.0

2.1.1 Antenna mounting structure for sector / cellular wireless antenna per set.

Sl. No. Description Marked Nos. Length Total

Weight

1. L65X65X6 AC1 2 750 8.7

2. ISMC75 AC2 2 320 4.6

3. ISMC75 AC2A 2 320 4.6

4. UCLAMP PLAIN

ROD 16DIA AC3 2 335 1.1

5. PIPE NB65M BP1 1 3000 19.3

6. BOLT M16X125 8 1.6

7. NUT M16 12 0.5

8. PLAIN WASHER M16 12 0.3

9. SPRING WASHER M16 12 0.1

Total Weight of Each 40.6

Total Weight for 6 sets @ 40.6 Kg 243.6


2.1.2 For Microwave 0.6m diameter to 1.2m diameter per set.



Weight

1. L75X75X6 MW1 2 500 6.8

2. ISMC75 MW2 2 420 6.0

3. ISMC75 MW2A 2 420 6.0

4. UCLAMP PLAIN ROD

16DIA MW3 2 380 1.2

5. PIPE NB80M BP2 1 1000 8.4

6. BOLT M16X175 8

2.0

7. NUT M16 12

0.9

8. PLAIN WASHER M16 12

0.3

9. SPRING WASHER M16 12

0.1




Weight

1. L100X100X6 MW1 2 500 9.2

2. ISMC100 MW2 2 420 8.0

3. ISMC100 MW2A 2 420 8.0

4. UCLAMP PLAIN ROD

20DIA MW3 2 430 2.2

5. PIPE NB100M BP3 1 2000 24.4

6. BOLT M20X175 8

4.0

7. NUT M20 12

0.5


0.4


0.2




2.1.4 Bill of Material for Foundation for 30m Ground Based Tower.

Sl. No. Item of work Nos. L B H/D Qty Unit

m m m

1. Earth work on excava-

tion 1 5 5 3.3 82.5 m

3

2. 8" soling on founda-

tion 1 5 5 0.2 5 m

3

3. PCC 1:3:6 1 5 5 0.1 2.5 m3

4.

RCC 1:1.5:3 (M20)

On raft 1 5 5 0.45 11.25 m3

on pedestal shaft 4 0.55 0.55 2.75 3.3275 m3

on tie beam 4 2.908 0.25 0.3 0.8724 m3

Total RCC M20 15.4499 m3

5.

Form work

On raft 1 20

0.45 9 m2

on pedestal shaft 4 2.2

2.75 6.05 m2

on tie beam 4 2.908

0.6 1.7448 m2

Total form work 16.7948 m2

6.

Reinforcement steel

work

on raft

main bar 16 DIA 128 5.25 @ 1.58 1061.76 kg

chairs 12 DIA 16 1.5 @ 0.88 21.12 kg

on pedestal shaft

kg

main bar 25 DIA 12 4.2 @ 3.9 196.56 kg

stirrups1 8 DIA 17 1.95 @ 0.4 13.26 kg

stirrups2 8 DIA 17 1.378858 @ 0.4 9.376236 kg

on tie beam

kg

main bar 16 DIA 4 5.115 @ 1.58 32.3268 kg

stirrups3 6 DIA 27 1.1 @ 0.22 6.534 kg

Total reinforcement work 1340.937 kg

7 Earthwork on Backfil-

ling 59.5501 m

3


2.2 Bill of Material for 40m Ground Based Tower


piece

Total

Weight

1.

Pan

el 1

3 t

o18

Horizontal 1A L75x5 4 1975 11.3 45.0

1B L75x5 6 1975 11.3 67.5

1B-X L75x5 6 1975 11.3 67.5

1C L75x5 4 1975 11.3 45.0

1C-X L75x5 4 1975 11.3 45.0

Minor Bracing 4 L45x5 40 1063 3.6 144.6

20 L45x5 8 1068 3.6 29.0

Redundant 3 L45x5 40 815 2.8 110.8

5 L45x5 40 871 3.0 118.5

19 L45x5 8 844 2.9 23.0

21 L45x5 8 798 2.7 21.7

Diagonal 6 L65x5 40 3332 16.3 653.1

18 L65x5 4 3276 16.1 64.2

18A L65x5 4 3276 16.1 64.2

Railing flat 9 Fl 50x5 8 1113 2.2 17.8

14 Fl 50x5 4 1113 2.2 8.9

22 Fl 50x5 4 1136 2.3 9.1

Gusset Plate 2 271x201x6 8 271 2.6 20.5

8 271x328x6 32 271 4.2 134.0

16 271x328x6 8 271 4.2 33.5


13 L90x90x10 4 356 4.8 19.1


Splice Cleat Packing

Plat 11 PL 50x150x2 16 150 0.1 1.9

Leg 7 L100x8 4 4623 55.9 223.8

15 L100x10 4 4994 74.4 297.6

17 L100x10 4 5050 75.2 301.0

2.

Pan

el 1

0 t

o 1

2

Horizontal 23 L75x5 1 2223 12.7 12.7

23X L75x5 1 2223 12.7 12.7

23A L75x5 1 2223 12.7 12.7

23A-X L75x5 1 2223 12.7 12.7

37 L65x5 1 2408 11.8 11.8

37-X L65x5 1 2408 11.8 11.8

37A L65x5 2 2408 11.8 23.6

Minor Bracing 27 L45x5 8 1110 3.8 30.2

32 L45x5 8 1211 4.1 32.9

Redundant 26 L45x5 8 827 2.8 22.5

28 L45x5 8 843 2.9 22.9

31 L45x5 8 877 3.0 23.9

33 L45x5 8 889 3.0 24.2



piece

Total

Weight

41 L45x5 8 784 2.7 21.3

42 L45x5 8 1606 5.5 43.7

43 L45x5 8 1743 5.9 47.4

44 L45x5 8 739 2.5 20.1

45 L45x5 4 952 3.2 12.9

Diagonal 25 L65x5 4 3385 16.6 66.3

25A L65x5 4 3385 16.6 66.3

34 L65x5 4 3576 17.5 70.1

34A L65x5 4 3576 17.5 70.1

40 L65x5 4 4496 22.0 88.1

40A L65x5 4 4496 22.0 88.1


24X PL161x436x8 4 436 4.4 17.6

29 PL155x314x8 8 314 3.1 24.5

38 PL215x288x8 8 215 3.9 31.1



Leg 30 L130x130x12 4 5175 121.6 486.5

39 L130x130x12 4 3650 85.8 343.1

3.

Pan

el 6

to

9

Horizontal 47 L75x5 1 2688 15.3 15.3

47-X L75x5 1 2688 15.3 15.3

47A L75x5 1 2688 15.3 15.3

47A-X L75x5 1 2688 15.3 15.3

58 L65x5 1 2981 14.6 14.6

58-X L65x5 1 2981 14.6 14.6

58A L65x5 2 2981 14.6 29.2

67 L75x5 1 3315 18.9 18.9

67-X L75x5 1 3315 18.9 18.9

67A L75x5 1 3315 18.9 18.9

67A-X L75x5 1 3315 18.9 18.9

77 L65x5 1 3860 18.9 18.9

77-X L65x5 1 3860 18.9 18.9

77A L65x5 2 3860 18.9 37.8

Redundant 50 L45x5 8 890 3.0 24.2

51 L45x5 8 1630 5.5 44.3

52 L45x5 8 1741 5.9 47.4

53 L45x5 8 837 2.8 22.8

54 L45x5 4 1071 3.6 14.6

61 L45x5 8 983 3.3 26.7

62 L45x5 8 1841 6.3 50.1

63 L45x5 8 1995 6.8 54.3

64 L45x5 8 921 3.1 25.1



piece

Total

Weight

65 L45x5 4 1179 4.0 16.0

70 L45x5 4 1307 4.4 17.8

71 L45x5 8 1094 3.7 29.8

72 L50x5 8 2004 7.6 60.9

73 L50x5 8 2196 8.3 66.8

74 L45x5 8 998 3.4 27.1

75 L45x5 4 1299 4.4 17.7

88 L45x5 4 1442 4.9 19.6

89 L45x5 8 1161 3.9 31.6

90 L50x5 8 2047 7.8 62.2

91 L50x5 8 2162 8.2 65.7

92 L45x5 8 1088 3.7 29.6

93 L45x5 4 1434 4.9 19.5

Diagonal 49 L65x5 4 4685 23.0 91.8

49A L65x5 4 4685 23.0 91.8

60 L65x5 4 5269 25.8 103.3

60A L65x5 4 5269 25.8 103.3

69 L75x6 4 5814 39.5 158.1

69A L75x6 4 5814 39.5 158.1

94 L75x6 4 5998 40.8 163.1

94A L75x6 4 5998 40.8 163.1


59 PL225x235x8 8 225 3.3 26.6

68 PL225x255x8 8 225 3.6 28.8

78 PL205x401x8 8 205 5.2 41.3

Batten Plate 79 PL272x100x12 16 272 2.6 41.0


83 L130x130x12 4 470 11.0 44.2

84 L130x130x12 4 470 11.0 44.2

85 L130x130x12 8 470 11.0 88.4

97 L130x130x12 8 470 11.0 88.4

98 L130x130x12 8 470 11.0 88.4


82 Pl120x470x12 8 120 5.3 42.5

86 Pl272x470x12 4 272 12.0 48.2

95 Pl272x470x12 4 272 12.0 48.2

96 Pl120x470x12 8 120 5.3 42.5

Splice Packing Plate 57 Pl110x260x4 8 110 0.9 7.2

87 Pl90x230x4 8 90 0.6 5.2

Leg 46 L150x150x12 4 3750 102.4 409.5



piece

Total

Weight

66 L150x150x16 4 3950 141.4 565.6

76 L150x150x16 4 4450 159.3 637.2

80 L130x130x12 4 4690 110.2 440.9

81 L130x130x12 4 4450 104.6 418.3

4.

Stump S40 L130x130x12 4 901 21.2 84.7

S41 L130x130x12 4 907 21.3 85.3

5. Base Plate B40 PL450x450x25 4 450 39.7 159.0


7.

Lad

der

Su

pp

ort


LS1X L65x5 2 2217 10.9 21.7

LS2 L65x5 3 2217 10.9 32.6

LS2X L65x5 3 2217 10.9 32.6

LS3 L65x5 1 2219 10.9 10.9

LS4 L65x5 1 2219 10.9 10.9

LS5 L65x5 1 2666 13.1 13.1

LS5X L65x5 1 2666 13.1 13.1

LS6 L75x5 1 2975 17.0 17.0

LS7 L75x5 1 2975 17.0 17.0

LS8 L65x5 1 3278 16.1 16.1

LS8X L65x5 1 3278 16.1 16.1

LS9 L75x5 1 3608 20.6 20.6

LS10 L75x5 1 3608 20.6 20.6

LS11 L75x5 1 3957 22.6 22.6

LS11X L75x5 1 3957 22.6 22.6

8.

Pla

tfo

rm

Platform P1 Fl 50x4 12 542 0.9 10.4

P2 L45x5 12 739 2.5 30.2

P3 Mesh 2217x844 6 2217 20.6 123.5

P4 Fl 50x4 6 1825 2.9 17.5

P5 Fl 50x4 12 256 0.4 4.9

P6 Fl 50x4 6 2217 3.5 21.3

P7 Mesh 2219x845 1 2219 20.6 20.6

P8 Fl 50x4 1 2219 3.6 3.6

P9 Fl 50x4 2 186 0.3 0.6

P10 Fl 50x4 2 591 0.9 1.9

P11 L45x5 1 789 2.7 2.7

P12 L45x5 1 789 2.7 2.7

P13 Fl 50x4 1 1923 3.1 3.1

P14 Mesh 720x974 2 720 7.7 15.4

P15 Fl 50x4 4 720 1.2 4.6

P16 Fl 50x4 4 874 1.4 5.6

P17 L45x5 2 720 2.4 4.9

P18 L65x5 2 720 3.5 7.1

P19 L65x5 2 720 3.5 7.1

P20 L75X5 1 2975 17.0 17.0

P21 PL125X170X6 8 125 1.0 8.0

P22 L65x5 4 1197 5.9 23.5



piece

Total

Weight

P22X L65x5 4 1197 5.9 23.5

P23 Fl 50x4 2 794 1.3 2.5

P24 L50X5 2 794 3.0 6.0

P25 PL125X170X6 4 125 1.0 4.0

P26 L65x5 2 1193 5.8 11.7

P26X L65x5 2 1193 5.8 11.7

P27 Fl 50x4 4 729 1.2 4.7

P28 L50X5 4 729 2.8 11.1

P29 Fl 50x4 2 324 0.5 1.0

P30 L50X5 2 324 1.2 2.5

P31 L75X6 1 3608 24.5 24.5

9.

Ladder L1

L1L L50X50X4 1 2697 8.1 8.1

L1R L50X50X4 1 2697 8.1 8.1

ROD16 R16 DIA 9 510 0.8 7.3

CR1 FLAT 40X4 3 2024 2.6 7.9

CF1 FLAT 40X4 3 2419 3.1 9.4

10.

Ladder L2

L2L L50X50X4 1 3894 11.7 11.7

L2R L50X50X4 1 3894 11.7 11.7

ROD16 R16 DIA 13 510 0.8 10.6

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 1 1032 1.3 1.3

CF2 FLAT 40X4 2 3788 4.9 9.8

CF2A FLAT 40X4 1 2615 3.4 3.4

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 6 166 0.2 1.3

11.

Ladder L3

L3L L50X50X4 1 5086 15.3 15.3

L3R L50X50X4 1 5086 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF3 FLAT 40X4 2 5192 6.7 13.5

CF3A FLAT 40X4 1 2040 2.7 2.7

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

12.

Ladder L4

L4L L50X50X4 1 5111 15.3 15.3

L4R L50X50X4 1 5111 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 4 2024 2.6 10.5

CR2 FLAT 40X4 1 1032 1.3 1.3

CF4 FLAT 40X4 2 5111 6.6 13.3

CF4A FLAT 40X4 1 3527 4.6 4.6

SA1 L65X65X5 2 206 1.0 2.0



piece

Total

Weight

SF1 FLAT 40X4 4 166 0.0

13.

Ladder L5

L5L L50X50X4 1 4786 14.4 14.4

L5R L50X50X4 1 4786 14.4 14.4 ROD16 R16 DIA 16 510 0.8 13.1

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF5 FLAT 40X4 2 4786 6.2 12.4

CF5A FLAT 40X4 1 2507 3.3 3.3

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 6 166 0.2 1.3

14.

Ladder L6

L6L L50X50X4 1 5111 15.3 15.3

L6R L50X50X4 1 5111 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 5 2024 2.6 13.2

CF6 FLAT 40X4 2 5111 6.6 13.3

CF6A FLAT 40X4 1 4435 5.8 5.8

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

15.

Ladder L7

L7L L50X50X4 1 5086 15.3 15.3

L7R L50X50X4 1 5086 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF7 FLAT 40X4 2 5086 6.6 13.2

CF7A FLAT 40X4 1 2526 3.3 3.3

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

16.

Ladder L408

L408L L50X50X5 1 5706 21.7 21.7

L408R L50X50X5 1 5706 21.7 21.7

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X5 4 2024 3.2 13.0

CF408 FLAT 40X5 3 3333 5.3 16.0

SA1 L65X65X6 2 206 1.2 2.4

SF1 FLAT 40X5 6 166 0.3 1.6

17.

Cable Ladder CL1

CL1L L50X50X4 1 2697 8.1 8.1

CL1R L50X50X4 1 2697 8.1 8.1

CLF FLAT 40X4 4 480 0.6 2.5

18.

Cable Ladder CL2

CL2L L50X50X4 1 3894 14.8 14.8

CL2R L50X50X4 1 3894 14.8 14.8

CLF FLAT 40X4 4 480 0.6 2.5



piece

Total

Weight

SA1 L65X65X5 2 206 0.0

19. Cable Ladder CL3

CL3L L50X50X4 1 5086 15.3 15.3

CL3R L50X50X4 1 5086 15.3 15.3 CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

20.

Cable Ladder CL4

CL4L L50X50X4 1 5111 15.3 15.3

CL4R L50X50X4 1 5111 15.3 15.3

CLF FLAT 40X4 7 480 0.6 4.4

SA1 L65X65X5 2 206 1.0 2.0

21.

Cable Ladder CL5

CL5L L50X50X4 1 4786 14.4 14.4

CL5R L50X50X4 1 4786 14.4 14.4

CLF FLAT 40X4 5 480 0.6 3.1

SA1 L65X65X5 2 206 1.0 2.0

22.

Cable Ladder CL6

CL6L L50X50X4 1 5111 15.3 15.3

CL6R L50X50X4 1 5111 15.3 15.3

CLF FLAT 40X4 7 480 0.6 4.4

SA1 L65X65X5 2 206 1.0 2.0

23.

Cable Ladder CL7

CL7L L50X50X4 1 5086 15.3 15.3

CL7R L50X50X4 1 5086 15.3 15.3

CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

24.

Cable Ladder CL8

CL8L L50X50X4 1 5706 17.1 17.1

CL8R L50X50X4 1 5706 17.1 17.1

CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

25.

Horizontal cable

Ladder

HL8L L50X50X4 1 4786 14.4 14.4

HL8R L50X50X4 1 4786 14.4 14.4

CLF FLAT 40X4 14 480 0.6 8.7

Pipe NB50M 6 3000 15.3 91.8

Angle L65X65X6 3 600 3.5 10.4

26.

Foundation Tem-

plate

Main angle L75x5 4 4200 23.9 95.8

Corner angle L50x5 4 2878 10.9 43.7

Plate Pl 550x550x10 4 550 19.6 78.5

Nut Bolt L/S

5.0







Weight

1. L100X100X6 MW1 2 500 9.2

2. ISMC100 MW2 2 420 8.0

3. ISMC100 MW2A 2 420 8.0

4. UCLAMP PLAIN ROD 20DIA MW3 2 430 2.2

5. PIPE NB100M BP3 1 2000 24.4

6. BOLT M20X175 8

4.0

7. NUT M20 12

0.5


0.4


Weight

1. L65X65X6 AC1 2 750 8.7

2. ISMC75 AC2 2 320 4.6

3. ISMC75 AC2A 2 320 4.6

4. UCLAMP PLAIN ROD 16DIA AC3 2 335 1.1

5. PIPE NB65M BP1 1 3000 19.3

6. BOLT M16X125 8

1.6

7. NUT M16 12

0.5


0.3


0.1




Weight

1. L75X75X6 MW1 2 500 6.8

2. ISMC75 MW2 2 420 6.0

3. ISMC75 MW2A 2 420 6.0


5. PIPE NB80M BP2 1 1000 8.4

6. BOLT M16X175 8

2.0

7. NUT M16 12

0.9


0.3


0.1





Weight


0.2




Sl. No Item of work Nos. L B H/D Qty Unit

m m m

1. Earth work on excavation 1 6 6 3.3 118.8 m3

2. 8" soling on foundation 1 6 6 0.2 7.2 m3

3. PCC 1:3:6 1 6 6 0.1 3.6 m3

4.

RCC 1:1.5:3 (M20)

On raft 1 6 6 0.5 18 m3


on tie beam 4 3.8 0.25 0.35 1.33 m3


5.

Form work

On raft 1 26

0.5 13 m2


2.7 6.48 m2

on tie beam 4 3.8

0.7 2.66 m2


6.

Reinforcement steel work

on raft

main bar 16 DIA 148 6.25 @ 1.58 1461.5 kg

chairs 12 DIA 25 1.6 @ 0.88 35.2 kg

on pedestal shaft

kg

main bar 25 DIA 16 4.2 @ 3.9 262.08 kg

stirrups1 8 DIA 17 2.15 @ 0.4 14.62 kg

stirrups2 8 DIA 17 1.52028 @ 0.4 10.3379 kg

on tie beam

kg

main bar 16 DIA 4 5.6 @ 1.58 35.392 kg

stirrups3 6 DIA 35 1.2 @ 0.22 9.24 kg


7. Earthwork on Backfilling

84.782 m3


2.3 Bill of Material for 50m Ground Based Tower.


piece

Total

Weight

1.

Pan

el 1

3 t

o18

Horizontal 1A L75x5 4 1975 11.3 45.0

1B L75x5 6 1975 11.3 67.5

1B-X L75x5 6 1975 11.3 67.5

1C L75x5 4 1975 11.3 45.0

1C-X L75x5 4 1975 11.3 45.0

Minor Bracing 4 L45x5 40 1063 3.6 144.6

20 L45x5 8 1068 3.6 29.0

Redundant 3 L45x5 40 815 2.8 110.8

5 L45x5 40 871 3.0 118.5

19 L45x5 8 844 2.9 23.0

21 L45x5 8 798 2.7 21.7

Diagonal 6 L65x5 40 3332 16.3 653.1

18 L65x5 4 3276 16.1 64.2

18A L65x5 4 3276 16.1 64.2

Railing flat 9 Fl 50x5 8 1113 2.2 17.8

14 Fl 50x5 4 1113 2.2 8.9

22 Fl 50x5 4 1136 2.3 9.1

Gusset Plate 2 271x201x6 8 271 2.6 20.5

8 271x328x6 32 271 4.2 134.0

16 271x328x6 8 271 4.2 33.5


13 L90x90x10 4 356 4.8 19.1


Splice Cleat Packing

Plat 11 PL 50x150x2 16 150 0.1 1.9

Leg 7 L100x8 4 4623 55.9 223.8

15 L100x10 4 4994 74.4 297.6

17 L100x10 4 5050 75.2 301.0

2.

Pan

el 1

0 t

o 1

2

Horizontal 23 L75x5 1 2223 12.7 12.7

23X L75x5 1 2223 12.7 12.7

23A L75x5 1 2223 12.7 12.7

23A-X L75x5 1 2223 12.7 12.7

37 L65x5 1 2408 11.8 11.8

37-X L65x5 1 2408 11.8 11.8

37A L65x5 2 2408 11.8 23.6

Minor Bracing 27 L45x5 8 1110 3.8 30.2

32 L45x5 8 1211 4.1 32.9

Redundant 26 L45x5 8 827 2.8 22.5

28 L45x5 8 843 2.9 22.9

31 L45x5 8 877 3.0 23.9



piece

Total

Weight

33 L45x5 8 889 3.0 24.2

41 L45x5 8 784 2.7 21.3

42 L45x5 8 1606 5.5 43.7

43 L45x5 8 1743 5.9 47.4

44 L45x5 8 739 2.5 20.1

45 L45x5 4 952 3.2 12.9

Diagonal 25 L65x5 4 3385 16.6 66.3

25A L65x5 4 3385 16.6 66.3

34 L65x5 4 3576 17.5 70.1

34A L65x5 4 3576 17.5 70.1

40 L65x5 4 4496 22.0 88.1

40A L65x5 4 4496 22.0 88.1


24X PL161x436x8 4 436 4.4 17.6

29 PL155x314x8 8 314 3.1 24.5

38 PL215x288x8 8 215 3.9 31.1



Leg 30 L130x130x12 4 5175 121.6 486.5

39 L130x130x12 4 3650 85.8 343.1

3.

Pan

el 6

to

9

Horizontal 47 L75x5 1 2688 15.3 15.3

47-X L75x5 1 2688 15.3 15.3

47A L75x5 1 2688 15.3 15.3

47A-X L75x5 1 2688 15.3 15.3

58 L65x5 1 2981 14.6 14.6

58-X L65x5 1 2981 14.6 14.6

58A L65x5 2 2981 14.6 29.2

67 L75x5 1 3315 18.9 18.9

67-X L75x5 1 3315 18.9 18.9

67A L75x5 1 3315 18.9 18.9

67A-X L75x5 1 3315 18.9 18.9

77 L65x5 1 3860 18.9 18.9

77-X L65x5 1 3860 18.9 18.9

77A L65x5 2 3860 18.9 37.8

Redundant 50 L45x5 8 890 3.0 24.2

51 L45x5 8 1630 5.5 44.3

52 L45x5 8 1741 5.9 47.4

53 L45x5 8 837 2.8 22.8

54 L45x5 4 1071 3.6 14.6

61 L45x5 8 983 3.3 26.7

62 L45x5 8 1841 6.3 50.1



piece

Total

Weight

63 L45x5 8 1995 6.8 54.3

64 L45x5 8 921 3.1 25.1

65 L45x5 4 1179 4.0 16.0

70 L45x5 4 1307 4.4 17.8

71 L45x5 8 1094 3.7 29.8

72 L50x5 8 2004 7.6 60.9

73 L50x5 8 2196 8.3 66.8

74 L45x5 8 998 3.4 27.1

75 L45x5 4 1299 4.4 17.7

88 L45x5 4 1442 4.9 19.6

89 L45x5 8 1161 3.9 31.6

90 L50x5 8 2047 7.8 62.2

91 L50x5 8 2162 8.2 65.7

92 L45x5 8 1088 3.7 29.6

93 L45x5 4 1434 4.9 19.5

Diagonal 49 L65x5 4 4685 23.0 91.8

49A L65x5 4 4685 23.0 91.8

60 L65x5 4 5269 25.8 103.3

60A L65x5 4 5269 25.8 103.3

69 L75x6 4 5814 39.5 158.1

69A L75x6 4 5814 39.5 158.1

94 L75x6 4 5998 40.8 163.1

94A L75x6 4 5998 40.8 163.1


59 PL225x235x8 8 225 3.3 26.6

68 PL225x255x8 8 225 3.6 28.8

78 PL205x401x8 8 205 5.2 41.3



83 L130x130x12 4 470 11.0 44.2

84 L130x130x12 4 470 11.0 44.2

85 L130x130x12 8 470 11.0 88.4

97 L130x130x12 8 470 11.0 88.4

98 L130x130x12 8 470 11.0 88.4


82 Pl120x470x12 8 120 5.3 42.5

86 Pl272x470x12 4 272 12.0 48.2

95 Pl272x470x12 4 272 12.0 48.2

96 Pl120x470x12 8 120 5.3 42.5

Splice Packing Plate 57 Pl110x260x4 8 110 0.9 7.2

87 Pl90x230x4 8 90 0.6 5.2



piece

Total

Weight

Leg 46 L150x150x12 4 3750 102.4 409.5

66 L150x150x16 4 3950 141.4 565.6

76 L150x150x16 4 4450 159.3 637.2

80 L130x130x12 4 4690 110.2 440.9

81 L130x130x12 4 4450 104.6 418.3

4.

Pan

el 4

T0

5

Horizontal 594 L75x5 2 4315 24.6 49.2

594A L75x5 1 4315 24.6 24.6

594A-X L75x5 1 4315 24.6 24.6

115 L75x5 2 4930 28.1 56.2

115A L75x5 2 4930 28.1 56.2

Redundant 105 L45x5 4 1636 5.6 22.2

106 L45x5 8 1327 4.5 36.1

107 L65x5 8 2244 11.0 88.0

108 L50x5 8 2421 9.2 73.6

109 L45x5 8 1212 4.1 33.0

110 L45x5 4 1601 5.4 21.8

123 L45x5 4 1847 6.3 25.1

124 L50x5 8 1483 5.6 45.1

125 L65x5 8 2353 11.5 92.2

126 L50x5 8 2434 9.2 74.0

127 L45x5 8 1387 4.7 37.7

128 L45x5 4 1831 6.2 24.9

Diagonal 99 L65x5 4 2899 14.2 56.8

99A L65x5 4 2899 14.2 56.8

104 L65x5 4 3850 18.9 75.5

104A L65x5 4 3850 18.9 75.5

119 L75x5 4 3105 17.7 70.8

119A L75x5 4 3105 17.7 70.8

120 L75x5 4 4150 23.7 94.6

120A L75x5 4 4150 23.7 94.6

Diagonal Cleat angle 111 L65x5 8 256 1.3 10.0

122 L65x5 8 286 1.4 11.2

Diagonal Cleat Plate 112 PL60x231x6 16 60 0.7 10.4

121 PL60x256x6 16 60 0.7 11.6

Gusset Plate 102 Pl201x473x8 4 201 6.0 23.9

102X Pl201x473x8 4 201 6.0 23.9

117 PL145x175x6 8 145 1.2 9.6

116 PL145x374x8 8 145 3.4 27.2

118 PL145x170x6 8 145 1.5 12.4

G50 PL145x168x8 8 145 1.5 12.2




piece

Total

Weight


134 L130x130x12 16 470 11.0 176.7


133 PL272x470x12 8 272 12.0 96.3

Leg 113 L130x130x12 4 5059 118.9 475.5

114 L130x130x12 4 5059 118.9 475.5

129 L130x130x12 4 4950 116.3 465.3

130 L130x130x12 4 4950 116.3 465.3

Stump S50 L130x130x12 4 903.5 21.2 84.9

S51 L130x130x12 4 913.5 21.5 85.9

Base Plate B50 PL550x550x32 4 550 76.0 304.0


6.

Lad

der

Su

pp

ort


LS1X L65x5 2 2217 10.9 21.7

LS2 L65x5 3 2217 10.9 32.6

LS2X L65x5 3 2217 10.9 32.6

LS3 L65x5 1 2219 10.9 10.9

LS4 L65x5 1 2219 10.9 10.9

LS5 L65x5 1 2666 13.1 13.1

LS5X L65x5 1 2666 13.1 13.1

LS6 L75x5 1 2975 17.0 17.0

LS7 L75x5 1 2975 17.0 17.0

LS8 L65x5 1 3278 16.1 16.1

LS8X L65x5 1 3278 16.1 16.1

LS9 L75x5 1 3608 20.6 20.6

LS10 L75x5 1 3608 20.6 20.6

LS11 L75x5 1 3957 22.6 22.6

LS11X L75x5 1 3957 22.6 22.6

LS12 L75x6 1 4334 29.5 29.5

LS12A L75x6 1 4334 29.5 29.5

LS13 L75x6 1 5021 34.1 34.1

LS13X L75x6 1 5021 34.1 34.1

7.

Pla

tfo

rm

Platform P1 Fl 50x4 12 542 0.9 10.4

P2 L45x5 12 739 2.5 30.2

P3 Mesh 2217x844 6 2217 20.6 123.5

P4 Fl 50x4 6 1825 2.9 17.5

P5 Fl 50x4 12 256 0.4 4.9

P6 Fl 50x4 6 2217 3.5 21.3

P7 Mesh 2219x845 1 2219 20.6 20.6

P8 Fl 50x4 1 2219 3.6 3.6

P9 Fl 50x4 2 186 0.3 0.6



piece

Total

Weight

P10 Fl 50x4 2 591 0.9 1.9

P11 L45x5 1 789 2.7 2.7

P12 L45x5 1 789 2.7 2.7

P13 Fl 50x4 1 1923 3.1 3.1

P14 Mesh 720x974 2 720 7.7 15.4

P15 Fl 50x4 4 720 1.2 4.6

P16 Fl 50x4 4 874 1.4 5.6

P17 L45x5 2 720 2.4 4.9

P18 L65x5 2 720 3.5 7.1

P19 L65x5 2 720 3.5 7.1

P20 L75X5 1 2975 17.0 17.0

P21 PL125X170X6 8 125 1.0 8.0

P22 L65x5 4 1197 5.9 23.5

P22X L65x5 4 1197 5.9 23.5

P23 Fl 50x4 2 794 1.3 2.5

P24 L50X5 2 794 3.0 6.0

P25 PL125X170X6 4 125 1.0 4.0

P26 L65x5 2 1193 5.8 11.7

P26X L65x5 2 1193 5.8 11.7

P27 Fl 50x4 4 729 1.2 4.7

P28 L50X5 4 729 2.8 11.1

P29 Fl 50x4 2 324 0.5 1.0

P30 L50X5 2 324 1.2 2.5

P31 L75X6 1 3608 24.5 24.5

P32 Mesh 720x974 1 720 7.7 7.7

P33 L75X6 1 4334 29.5 29.5

P34 L65x5 1 720 3.5 3.5

P35 L45x5 1 720 2.4 2.4

P36 L65x5 1 720 3.5 3.5

P37 Fl 50x4 2 720 1.2 2.3

P38 Fl 50x4 2 874 1.4 2.8

P39 L65x5 2 1197 5.9 11.7

P39X L65x5 2 1197 5.9 11.7

P40 Fl 50x4 1 794 1.3 1.3

P41 L50X5 1 794 2.7 2.7

P42 PL125X170X6 2 125 1.0 2.0

P43 L65x5 1 1193 5.8 5.8

P43X L65x5 1 1193 5.8 5.8

P44 Fl 50x4 2 729 1.2 2.3

P45 L50X5 2 729 2.8 5.5

P46 PL125X170X6 4 125 1.0 4.0



piece

Total

Weight

P47 L50X5 1 324 1.2 1.2

P48 Fl 50x4 1 324 0.5 0.5

8.

Horizontal diagonal HD1 L65x6 1 2519 14.6 14.6

HD1x L65x6 1 2519 14.6 14.6 HD1A L65x6 1 2519 14.6 14.6

HD1A-x L65x6 1 2519 14.6 14.6

HD2 L80x6 1 3046 22.2 22.2

HD2x L80x6 1 3046 22.2 22.2

HD2A L80x6 1 3046 22.2 22.2

HD2A-x L80x6 1 3046 22.2 22.2

9.

Ladder L1

L1L L50X50X4 1 2697 8.1 8.1

L1R L50X50X4 1 2697 8.1 8.1

ROD16 R16 DIA 9 510 0.8 7.3

CR1 FLAT 40X4 3 2024 2.6 7.9

CF1 FLAT 40X4 3 2419 3.1 9.4

10.

Ladder L2

L2L L50X50X4 1 3894 11.7 11.7

L2R L50X50X4 1 3894 11.7 11.7

ROD16 R16 DIA 13 510 0.8 10.6

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 1 1032 1.3 1.3

CF2 FLAT 40X4 2 3788 4.9 9.8

CF2A FLAT 40X4 1 2615 3.4 3.4

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 6 166 0.2 1.3

11.

Ladder L3

L3L L50X50X4 1 5086 15.3 15.3

L3R L50X50X4 1 5086 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF3 FLAT 40X4 2 5192 6.7 13.5

CF3A FLAT 40X4 1 2040 2.7 2.7

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

12.

Ladder L4

L4L L50X50X4 1 5111 15.3 15.3

L4R L50X50X4 1 5111 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 4 2024 2.6 10.5



piece

Total

Weight

CR2 FLAT 40X4 1 1032 1.3 1.3

CF4 FLAT 40X4 2 5111 6.6 13.3

CF4A FLAT 40X4 1 3527 4.6 4.6

SA1 L65X65X5 2 206 1.0 2.0 SF1 FLAT 40X4 4 166 0.0

13.

Ladder L5

L5L L50X50X4 1 4786 14.4 14.4

L5R L50X50X4 1 4786 14.4 14.4

ROD16 R16 DIA 16 510 0.8 13.1

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF5 FLAT 40X4 2 4786 6.2 12.4

CF5A FLAT 40X4 1 2507 3.3 3.3

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 6 166 0.2 1.3

14.

Ladder L6

L6L L50X50X4 1 5111 15.3 15.3

L6R L50X50X4 1 5111 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 5 2024 2.6 13.2

CF6 FLAT 40X4 2 5111 6.6 13.3

CF6A FLAT 40X4 1 4435 5.8 5.8

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

15.

Ladder L7

L7L L50X50X4 1 5086 15.3 15.3

L7R L50X50X4 1 5086 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF7 FLAT 40X4 2 5086 6.6 13.2

CF7A FLAT 40X4 1 2526 3.3 3.3

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

16.

Ladder L8

L8L L50X50X4 1 4786 14.4 14.4

L8R L50X50X4 1 4786 14.4 14.4

ROD16 R16 DIA 16 510 0.8 13.1

CR1 FLAT 40X4 4 2024 2.6 10.5

CR2 FLAT 40X4 1 1032 1.3 1.3

CF8 FLAT 40X4 2 4786 6.2 12.4



piece

Total

Weight

CF8A FLAT 40X4 1 3508 4.6 4.6

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

17.

Ladder L9 L9L L50X50X4 1 5086 15.3 15.3

L9R L50X50X4 1 5086 15.3 15.3

ROD16 R16 DIA 17 510 0.8 13.9

CR1 FLAT 40X4 3 2024 2.6 7.9

CR2 FLAT 40X4 2 1032 1.3 2.7

CF9 FLAT 40X4 2 5086 6.6 13.2

CF9A FLAT 40X4 1 3409 4.4 4.4

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 4 166 0.2 0.9

18.

Ladder L510

L510L L50X50X4 1 5823 17.5 17.5

L510R L50X50X4 1 5823 17.5 17.5

ROD16 R16 DIA 18 510 0.8 14.7

CR1 FLAT 40X4 4 2024 2.6 10.5

CF510 FLAT 40X4 3 3333 4.3 13.0

SA1 L65X65X5 2 206 1.0 2.0

SF1 FLAT 40X4 6 166 0.2 1.3

19.

Cable Ladder CL1

CL1L L50X50X4 1 2697 8.1 8.1

CL1R L50X50X4 1 2697 8.1 8.1

CLF FLAT 40X4 4 480 0.6 2.5

20.

Cable Ladder CL2

CL2L L50X50X4 1 3894 14.8 14.8

CL2R L50X50X4 1 3894 14.8 14.8

CLF FLAT 40X4 4 480 0.6 2.5

SA1 L65X65X5 2 206 0.0

21.

Cable Ladder CL3

CL3L L50X50X4 1 5086 15.3 15.3

CL3R L50X50X4 1 5086 15.3 15.3

CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

22.

Cable Ladder CL4

CL4L L50X50X4 1 5111 15.3 15.3

CL4R L50X50X4 1 5111 15.3 15.3

CLF FLAT 40X4 7 480 0.6 4.4

SA1 L65X65X5 2 206 1.0 2.0

Cable Ladder CL5



piece

Total

Weight

23.

CL5L L50X50X4 1 4786 14.4 14.4

CL5R L50X50X4 1 4786 14.4 14.4

CLF FLAT 40X4 5 480 0.6 3.1

SA1 L65X65X5 2 206 1.0 2.0

24.

Cable Ladder CL6

CL6L L50X50X4 1 5111 15.3 15.3

CL6R L50X50X4 1 5111 15.3 15.3

CLF FLAT 40X4 7 480 0.6 4.4

SA1 L65X65X5 2 206 1.0 2.0

25.

Cable Ladder CL7

CL7L L50X50X4 1 5086 15.3 15.3

CL7R L50X50X4 1 5086 15.3 15.3

CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

26.

Cable Ladder CL8

CL8L L50X50X4 1 4786 14.4 14.4

CL8R L50X50X4 1 4786 14.4 14.4

CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

27.

Cable Ladder CL9

CL9L L50X50X4 1 5086 15.3 15.3

CL9R L50X50X4 1 5086 15.3 15.3

CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

28.

Cable Ladder CL10

CL10L L50X50X4 1 5823 17.5 17.5

CL10R L50X50X4 1 5823 17.5 17.5

CLF FLAT 40X4 6 480 0.6 3.7

SA1 L65X65X5 2 206 1.0 2.0

29.

Horizontal cable

Ladder

HL10L L50X50X4 2 5111 15.3 30.7

HL10R L50X50X4 2 5111 15.3 30.7

CLF FLAT 40X4 14 480 0.6 8.7

Pipe NB50M 6 3000 15.3 91.8

Angle L65X65X5 3 600 2.9 8.8

30.

Foundation Template

Main angle L75x5 4 5538 31.6 126.3

Corner angle L50x5 4 2878 10.9 43.7

Plate Pl 550x550x10 4 550 23.7 95.0

Nut Bolt L/S

5.0





weight

1. L65X65X6 AC1 2 750 8.7

2. ISMC75 AC2 2 320 4.6

3. ISMC75 AC2A 2 320 4.6

4. UCLAMP PLAIN ROD 16DIA AC3 2 335 1.1

5. PIPE NB65M BP1 1 3000 19.3

6. BOLT M16X125 8

1.6

7. NUT M16 12

0.5


0.3


0.1





weight

1 L75X75X6 MW1 2 500 6.8

2. ISMC75 MW2 2 420 6.0

3. ISMC75 MW2A 2 420 6.0


5. PIPE NB80M BP2 1 1000 8.4

6. BOLT M16X175 8

2.0

7. NUT M16 12

0.9


0.3


0.1





weight

1 L100X100X6 MW1 2 500 9.2

2. ISMC100 MW2 2 420 8.0

3. ISMC100 MW2A 2 420 8.0


5. PIPE NB100M BP3 1 2000 24.4

6. BOLT M20X175 8

4.0



weight

7. NUT M20 12

0.5


0.4


0.2




Sl. No. Item of work Nos. L B H/D Qty Unit

m m m

1. Earth work on excava-

tion 1 7.7 7.7 3.3 195.657 m

3

2. 8" soling on founda-

tion 1 7.7 7.7 0.2 11.858 m

3

3. PCC 1:3:6 1 7.7 7.7 0.1 5.929 m3

4.

RCC 1:1.5:3 (M20)

On raft 1 7.7 7.7 0.6 35.574 m3


on tie beam 4 5.138 0.25 0.4 2.0552 m3


5.

Form work

On raft 1 32.8

0.6 19.68 m2


2.6 6.76 m2

on tie beam 4 5.138

0.8 4.1104 m2


6.

Reinforcement steel

work

on raft

main bar 16 DIA 200 7.95 @ 1.58 2512.2 kg

chairs 12 DIA 49 1.8 @ 0.88 77.616 kg

on pedestal shaft

kg

main bar 32 DIA 12 4.5 @ 6.3 340.2 kg

stirrups1 8 DIA 17 2.35 @ 0.4 15.98 kg

stirrups2 8 DIA 17 1.661701 @ 0.4 11.29957 kg

on tie beam

kg

main bar 16 DIA 4 7.088 @ 1.58 44.79616 kg

stirrups3 6 DIA 42 1.3 @ 0.22 12.012 kg


7. Earthwork on Backfil-

ling 135.8468 m

3


Chapter-3

Specifications for Earthing System & Lightening Arrestor

Plate Earth

(Layout & interconnection)

(Diagram not to Scale)

Figure 1

Notes:

a. GI Plates and Strips are connected by GI nuts and Bolts to prevent ingress of moisture

and soil. The joint is made watertight by covering with bitumen.

b. The bends in GI strips should not be sharp but within radius of 1 meter as shown in fig-

ure.

c. After the plate earthing electrode is placed in position and all the interconnection made,

the pit shall be filled up with fine ash and/or finely sieved good quality soil, which shall

be rammed in layers so that it is compact and cohesive.

d. Chemical treatment of earth using salts etc. are not recommended as the chemical treat-

ment does not last long and needs to be checked periodically.


e. Earth conductor should not be encircled with metal clamps while taking it along the wall.

This is essential to eliminate the high inductive reactance that will impede the flow of

surge current along the conductor in case of lightning.

f. Earthing conductor shall not pass through any metallic conduit or pipe as this will in-

crease surge impedance.

Figure 2 Earthing arrangement using outdoor Grounding Bus bar

And indoor Grounding Bus bar

GROUNDING STRIP 50 mmX3 mm TO PLATE EARTH

RING

EARTH

TOWER PLATEFORM

FEEDER GROUNDING CARD

FEEDER

BTS

LIGHTENING

ARRESTER

MOUNT

GROUNDING

WIRE

SMPS

GROUNDING WIRE

OUTDOOR

GROUNDING

BUS BAR

INDOOR

GROUNDING

BUS BAR


3.1 The bidder shall provide two numbers of G I plate earth (one for DG set and other for

equipment) located at least 3 meter apart and should be connected by 50mmX3mm G I strip

for maintaining common potential (Figure-2). Each plate earth system shall have ohmic

value 2.

3.2 Each earth plate (Figure-1) shall include excavation of pit of size 1500x1500x2000mm

depth and placing four numbers of G I plates of size 300x300x6 mm thick vertically at di-

agonally opposite ends in the excavated pit and inter connecting the plates with 4 Nos. of

50x3mm G I strips with 2 Nos. of G I bolts and nuts of 10mm diameter at each connection

and covering the joints with bitumen, placing G I pipe of 50mm internal diameter (B Class)

and 2000mm length at the center of the plate grid for watering and filling the pit with fine

ash and / or finally sieved good quality soil including ramming in 20 cm layers etc complete

and cover the pit with 750x750x50mm thick precast reinforced cement concrete slab having

100mm diameter hole at the centre to pass the GI pipe and construct a chamber of internal

size not less than 280x280x250mm with half brick wall including fixing CI manhole cover

of size 300x300mm of weight not less than 7.20 Kg. (cover & frame) and plastering the

chamber on all sides with cement mortar 1:4 of 12mm thick (1 cement : 4 fine sand) and in-

cluding disposal of surplus excavated earth if any.

3.3 The bidder shall terminate separate earth strips from the two earth pits up to indoor and

outdoor grounding bus bar mounted on the wall of building/shelter (i.e. one earth strip from

first pit to indoor grounding bus bar and another from second earth pit to outdoor grounding

bus bar) as per figure-2.

3.4 The bidder shall provide ring earth by providing GI Strip of size 50mm x 3 mm around the

tower in the trench and minimum one meter away from the tower by digging a trench 50

cm. wide and 150 cm. deep. The depth should not be less than 90 cm, in any case (for rocky

soil). To get the resistance of 2 ohms if any extra treatment of the soil is required the same

has to be done by the supplier without any extra cost.

3.5 The bidder shall provide four G I strips of size 50x3 mm, one end connected to the legs at

the bottom of tower with GI bolts and nuts [with lead sheath in between] and the other end

shall be connected to the ring earth with G I bolts and nuts [with lead sheath in between]

without any sharp bends using necessary clamps and screws.

3.6 The bidder shall provide GI bus bar of 50 x 3 mm or 50sq. mm Copper cable (PVC insu-

lated) connected to the lightning conductor and to the ring earth with 2 Nos. of 10 mm di-

ameter GI nuts & bolts [with lead sheath in between] at each connection. The bus bar shall

be drawn through heat shrink sleeve and shall be shrunk properly. The bus bar/cable shall

be clamped to the tower walls at uniform interval of 1.5 M. using proper clamps and insula-

tors such that the bus bar shall be well insulated from the tower/building walls completely.

***


Chapter-4

Technical Specifications for Aviation Warning Light

Note: Screened PVC insulated twin copper wire of size 3/22 IS Mark shall be provided

by Supplier. The length of Wire may vary according the height of the tower.

1. No. of LEDS: at least 170.

2. Maximum forward current: 45 mA

3. Input Voltage Variability: Shall withstand fluctuation of 25%

4. Power Consumption: 5 W to 10 W (48V DC Supply)

5. PIV protection: LEDs internally protected against rev. voltage up to 1 KV

6. Insulation Resistance: >200 M

7. Dielectric Strength: 2.5 KV

8. Earthing: Terminal shall be provided inside body

9. Body Material: Aluminum body with powder coating

10. Dome Material: Polycarbonate unbreakable red dome

11. Cable entry: PG11 cable gland

12. Photo sensor: Inbuilt photo sensor for automatic operation

13. Illuminance: 3000 lux

14. No. of Circuits: Multiple Circuits provided for maximum reliability.

15. Type of LEDS: Ultra high glow LEDs

16. Warranty: 36 months


Chapter-5

Key Diagrams

Documents

11e411_1