Design of monopole Tower

ZND090-AMT-Td-0001 Rev. A

FAST PLANETS Co LTD., ENGINEERING DEPARTMENT P.0. BOX : 34620 RIYADH - 11478

ANALYSIS / COMPARATIVE STUDY OF EXISTING 25+4.0m Extended Latticed MONOPOLE TOWER (LTE Project 2011)

Main Site No.:

ZND090

ORIGINAL DESIGN LOAD + EXISTING & PROPOSED LOADING CONDITION

LTE Project 2011

ZND090-AMT-Td-0001 Rev.A

TABLE OF CONTENTS TITLE

PAGE NO.

COVER PAGE

1

TABLE OF CONTENTS

2

INTRODUCTION

3

CONCLUSION

3

TOWER COMPARATIVE STUDY

4

TABLE I - WIND LOAD ON ANTENNA SUPPORT PIPE AND OTHER MOUNTED POLE STRUCTURE

6

TABLE II - STANDARD 25m SELF-SUPPORT MONOPOLE WIND LOAD

7

TOWER DEFLECTION

8

TOWER INFORMATION

9

ATTACHMENT ORIGINAL TOWER LOAD DESIGN CALCULATION TOWER PROFILE

Analyzed by:

J.B.Vasquez Telecom Engineer

Checked by:

Approved by:

J.A.Hasson Structural Engineer

A.A.Aleem Projects Manager

L'

Page 2 of 11

LTE Project 2011

Main Site No.

ZND090-AMT-Td-0001 Rev.A

ZND090

INTRODUCTION Tower load comparative study for main site no. ZND090 was performed to compare the design load against the actual load to determine its feasibility to support the existing and the proposed new antenna loading to be used for LTE Project 2011. Refer to pages 4 to 7 for the detailed comparative study of the tower original design loading and actual loading. Tower existing loading condition and proposed new antennas and tower physical condition and other relevant information are tabulated on pages 9 to 11. For information on tower mast geometry and member sizes, see attachment.

CONCLUSION The results show that the tower meet the criteria of 39 m/s (140KPH) basic wind speed. The original design load of the tower is greater than the present actual load and it is indicative that there is no increase in antenna loads. Hence, we can conclude that the tower can safely support the existing and the proposed microwave antenna loading for LTE Project 2011 .

Page 3 of 11

LTE Project 2011

ZND090-AMT-Td-0001 Rev.A

Comparison between original design loads and actual loads for standard 25.0m Monopole tower

Tower height = Gh =

25 m 1.690

Original Design Loads Wind speed =

39 m/s

Design Loads

Size

Dept

Qty, n

(m)

Elevation

Kz

(m)

Fa

Fa*Gh*Kz*n

Base Moment

(kN)

(kN)

(kN-m)

PANEL

900 MHZ

GSM

9

25.0

1.299

0.89

17.51

437.64

HP

1.20 DIA

MW

2

25.0

1.299

1.39

6.10

152.57

HP

2.40 DIA

MW

1

25.0

1.299

5.56

12.21

305.15

Tubular Poles 1

25.0 m high

GSM

LS

N/A 4

1.000

N/A 4

N/A 4

4636.41

Mounted Poles 2

2.0 m high

GSM

LS

N/A 4

1.000

N/A 4

N/A 4

2.86

Cantilevered Lattice 3

4.0 m high

GSM

LS

N/A 4

1.000

N/A 4

N/A 4

137.89

Total Base Moment =

1 25.0m high Monopole Tubular Pole 2 2.0 m high Mounted Pole 3 4.0m high Cantileverd Lattice 4 Previously gusted (i.e. K Z and Gh equal to 1.0), see Tables I, II & III

Page 4 of 11

5672.52

LTE Project 2011

ZND090-AMT-Td-0001 Rev.A

Actual Loads Wind speed = Actual Loads LR PANEL HP PANEL HP PANEL 3G HP HP HP HP HP NEW LTE 1 Tubular Poles Mounted Poles Cantilevered Lattice

35 m/s

GH = 1.69 Qty, n Elevation (m)

Size (m)

Dept

0.20 Ø x 2.0m

GSM

1

900 MHZ 0.30 DIA. 1800 MHZ 0.30 DIA. 900 MHZ 2100 MHZ 0.30 DIA. 0.60 DIA. 0.30 DIA. 0.30 DIA. 0.30 DIA.

GSM

3

Kz

Fa (kN)

Fa*Gh*Kz*n Base Moment (kN) (kN-m)

30 29 28 26 24 25 25 24 23 23 22.5 23

1.3687 1.3555 1.3420 1.3139 1.2842 1.2992 1.2992 1.2842 1.2687 1.2687 1.2607 1.2687

0.016

0.04

1.08

0.713

4.90

142.10

0.120

1.09

30.48

0.534

1.19

30.83

0.120

0.26

6.25

0.713

1.57

39.14

0.538

1.18

29.53

0.120

0.26

6.25

0.350

0.75

17.26

0.26 0.51 0.26 3.58

5.92 11.51 5.92 93.18

3734.14 2.26 111.26

MW

4

GSM

1

MW

1

GSM

1

GSM

1

MW

1

MW

1

MW MW MW GSM

1 2 1 3

26.00

1.314

0.120 0.120 0.120 0.538

25.0m high

GSM

LS

N/A 2

1.000

N/A 2

N/A 2

2.0M high

GSM

LS

N/A 2

1.000

N/A 2

N/A 2

4.0m high

GSM

LS

N/A 2

1.000

N/A 2

N/A 2

Total Base Moment = % Comparison of original design loads versus actual loads = 1

New GSM antenna

2

Previously gusted (i.e. K Z and Gh equal to 1.0), see Tables I & II

4267.11 0.7522

Conclusion : Since there is no increase in antenna loads, therefore the tower can safely support the existing plus the proposed new loading.

Page 5 of 11

LTE Project 2011

ZND090-AMT-Td-0001 Rev.A

Table I - Wind load on antenna support pipe and other mounted pole & latticed structures. Tower ht. = Wind speed = Gh1 = Actual Loads

LR

1

25 m 39 m/s 1.00