Wind Pressure Calculation

8/11/2019 Wind Pressure Calculation

1/30

DATE

Design Check REV : 0

WIND PRESSURE CALCULATION

Code : EN50341-1-2012

Specification : Tender Spec

Terrain Category = II

Design Wind Speed Vp = 38.9 m/s

Reference Height h = 10 m/s

Roughness Length z0 = 0.05 m

Topography Factor C0 = 1

Turbulence intensity Iv(10) 1/(C0* ln (h/z0)) = 0.189

Basic Wind Velocity Vb,0 Vp/sqrt (1+7 Iv(10)) = 25.523 m/s

For OPGW

Wind Direction factor Cdir = 1

Terrain Factor kr = 0.189

Max height of OPGW h = 26.85 m

Mean wind velocity Vh (h) Vb,0 x Cdirx C0x krx ln (h/z0) = 30.323 m/s

Air Density = 1.25

Dynamic wind pressure qh (h) 0.5* * Vh (h)2

= 574.678 N/m2

Turbulence intensity Iv(h) 1/(C0* ln (h/z0)) = 0.159

Peak wind pressure qp (h) [ 1+7 Iv(h)] x qh (h) = 1214.3 N/m2

= 123.781 kg/m2

Wind Pressure on Conductor Qwe_v qp(h) x Gc xCc

Gc For 350m Span & 27m ht = 0.661Cc = 1

Wind Pressure Qwe_v = 81.819 kg/m2

For Conductor



Max height of Conductor h = 22.35 m

Mean wind velocity Vh (h) Vb,0 x Cdirx C0x krx ln (h/z0) = 29.438 m/s

Air Density = 1.25

Dynamic wind pressure qh (h) 0.5* * Vh (h) 2 = 541.622 N/m2

Turbulence intensity Iv(h) 1/(C0* ln (h/z0)) = 0.164

Peak wind pressure qp (h) [ 1+7 Iv(h)] x qh (h) = 1163.4 N/m2

= 118.594 kg/m2

Wind Pressure on Conductor Qwc_v qp(h) x Gc xCc

Gc For 350m Span & 22.5m ht = 0.6475

Cc = 1

Wind Pressure Qwc_v = 76.789 kg/m2

Loading Calculation For Tower Type "

S (0-2) "Title :

Project :Document No :


2/30

DATE

Design Check REV : 0Loading Calculation For Tower Type "

S (0-2) "Title :


PHASE TO PHASE/OPGW CLEARANCE CALCULATION

Phase to Phase clearance c k.(fmax+li) + 0.75*Dpp

Maximum Sag fmax = 9.56 m Sag & Tension

length of insulator Li = 2.1 m Tender drg

Min clearance Dpp = 1.4 m TS - Cl.4.4.3.4(a)Factor for all clearances k = 0.6 TS - Cl.4.4.3.4(a)

Phase to Phase clearance c = 3.099 m

Phase to OPGW clearance c k.(fmax+li) + 0.75*Del

Maximum Sag fmax = 9.56 m Sag & Tension

length of insulator Li = 2.1 m Tender drg

Min Clearance Del = 1.2 m TS - Cl.4.4.3.4(a)

Factor for all clearances k = 0.6 TS - Cl.4.4.3.4(a)

Phase to OPGW clearance c = 2.949 m

Swing Angle Calculation for Insulators

Wind Span of Conductor Ws = 350 m

Weight Span of Conductor Wts = 450 m

Self Weight of Conductor Wc = 0.98 kg

Dia of Conductor Dc = 21.8 mm

Dia of Insulator Di (Assumed) = 190 mm

Length of Insulator Li (Tender drawing) = 2100 mm

Weight of Insulator Wi (Assumed) = 75 kg

Peak Wind pressure qp(h) = 118.594 Kg/m2

Wind Pressure on Conductor Qwc_v qp(h) x Gc xCc

Gc For 350m Span & 22.5m ht = 0.6475 EN - Table 4.4c

Cc = 1 TS - Cl.4.4.1.3

Wind Pressure Qwc_v = 76.789 Kg/m2

Wind Pressure on Insulator Qwins qp(h) x Gins x Cins

Structural factor Gins = 1

Insulator drag factor Cins = 1.2

Wind Pressure on Insulator Qwins = 142.312 Kg/m2

Swing Angle Calculation 58% maximum wind

Weight to Wind Span r Wts/Ws = 0.75

Weight of Conductor QGc Wts x Wc = 441 kg

Weight of Insulator QGi Wi = 75 kg

Wind Load on Conductor Qwc Qwc_v x Ws x Dc x 0.58 = 339.82 kg

Wind Load on Insulator Qwi Qwins x Li x Di = 56.78 kg

Swing Angle tan (Qwc + 0.5xQwi) = 0.99989

(r.QGc +0.5 QGi)

Swing Angle = 45


3/30

DATE

Design Check REV : 0Loading Calculation For Tower Type "

S (0-2) "Title :


Swing Angle Calculation maximum wind

Weight to Wind Span r Wts/Ws = 0.75

Weight of Conductor QGc Wts x Wc = 441 kg

Weight of Insulator QGi Wi = 75 kg

Wind Load on Conductor Qwc Qwc_v x Ws x Dc = 585.9 kgWind Load on Insulator Qwi Qwins x Li x Di = 56.78 kg

Swing Angle tan (Qwc + 0.5xQwi) = 1.66813

(r.QGc +0.5 QGi)

Swing Angle = 59.06


4/30

X Y

1 -1.95 26.85

2 3 2 -0.6 26.85

1 4 3 0.6 26.85

4 1.95 26.85

Panel 6 5 6 5 -0.6 25.65

6 0.6 25.65

7 -3.1 24.45

7 8 9 10 8 -0.6 24.45

9 0.6 24.45

11 12 10 3.1 24.45

Panel 5 11 -0.6 23.15

13 14 12 0.6 23.15

13 -0.6 21.85

14 0.6 21.85

15 16 17 18 15 -3.4 20.65

16 -0.6 20.65

17 0.6 20.65

Panel 4 19 20 18 3.4 20.65

19 -0.6 18.7

20 0.6 18.7

21 -3.1 17.5

21 22 23 24 22 -0.6 17.5

23 0.6 17.5

Panel 3 24 3.1 17.5

25 26 25 -0.6 15.5

26 0.6 15.5

27 -0.761 13.5

27 28 28 0.761 13.5

29 -0.963 11

30 0.963 11

31 -1.205 8

32 1.205 8

Panel 2 29 30 33 -1.487 4.5

34 1.487 4.5

35 -1.648 2.5

36 1.648 2.5

37 -1.81 0.5

38 1.81 0.5

31 32

Coordinates in Slope

Y X

1 15.5 0.6

33 34 2 0 1.85

Panel 1 0.5 0.5 1.81

2 2.5 1.648

2 4.5 1.487

35 36 3.5 8 1.205

3 11 0.963

2.5 13.5 0.761

Y 2 15.5 0.6

37 38

X


5/30


6/30

PT1 PT2

Length in

m

No. of

identical

Width in

m

Panel 6 1 2 1.35 2 0.1 0.27

1 5 1.806 2 0.1 0.3612

2 6 1.697 2 0.1 0.3394

2 5 1.2 2 0.1 0.24

2 3 1.2 1 0.1 0.12

5 6 1.2 1 0.1 0.12

5 7 2.773 2 0.1 0.5546

5 9 1.697 2 0.1 0.3394

7 8 2.5 2 0.1 0.5

8 9 1.2 1 0.1 0.12

5 8 1.2 2 0.1 0.24

At 4.486 40% extra for Sub Bracing

Total Area

1 4 3.9

5 6 1.2

1.2

5 6 1.2

7 10 6.2

1.2 7.5

Solidity ratio 0.598

Ct (3.96(1-1.5SR+SR2) 1.824

Panel 5 8 9 1.2 1 0.1 0.12

8 11 1.3 2 0.1 0.26

11 13 1.3 2 0.1 0.26

13 14 1.2 2 0.1 0.24

13 15 3.046 2 0.1 0.6092

13 16 1.2 2 0.1 0.24

13 17 1.697 2 0.1 0.3394

15 16 2.8 2 0.1 0.56

16 17 1.2 1 0.1 0.12

8 12 1.769 2 0.1 0.3538

11 14 1.769 2 0.1 0.3538


Total Area

8 9 1.2

13 14 1.2

2.6

13 14 1.2

15 18 6.8

1.2 7.92


Ct (3.96(1-1.5SR+SR2) 1.809

Panel 4 16 17 1.2 1 0.1 0.12

16 19 1.95 2 0.1 0.39

19 20 1.2 1 0.1 0.12

19 21 2.773 2 0.1 0.5546

19 22 1.2 2 0.1 0.24

21 22 2.5 2 0.1 0.5

22 23 1.2 1 0.1 0.12

16 20 2.29 2 0.1 0.458

19 23 1.697 2 0.1 0.3394


Total Area


7/30

16 17 1.2

19 20 1.2

1.95

19 20 1.2

21 24 6.2

1.2 6.78


Ct (3.96(1-1.5SR+SR2) 1.838

Panel 1

36 38 2.007 2 0.1 0.4014

33 38 5.184 2 0.1 1.0368

35 36 3.296 1 0.1 0.3296

31 34 4.416 2 0.1 0.8832

32 34 3.511 2 0.1 0.7022


Total Area

31 32 2.41

37 38 3.62

7.5 22.613


Ct (3.96(1-1.5SR+SR

2

) 2.896Panel 2 30 32 3.01 2 0.1 0.602

28 30 2.508 2 0.1 0.5016

29 32 3.701 2 0.1 0.7402

27 30 3.037 2 0.1 0.6074

31 32 2.41 1 0.1 0.241 40% extra for Sub Bracing

At 3.769

Total Area

27 28 1.522

31 32 2.41

5.5 10.813


Ct (3.96(1-1.5SR+SR

2

) 2.369

Panel 3 26 28 2.006 2 0.1 0.4012

23 26 2 2 0.1 0.4

22 26 2.332 2 0.1 0.4664

25 28 2.419 2 0.1 0.4838

25 26 1.2 1 0.1 0.12


Total Area

22 23 1.2

27 28 1.522

23 28 4 5.444


Ct (3.96(1-1.5SR+SR2) 2.019


8/30

DATE

07.02.14


SSN SJL/TA

Basic Wind Velocity Vb,0 = 25.523 m/s



Roughness Length z0 = 0.05 mTopography Factor C0 = 1

Air Density = 1.25

Structural Factor Gt = 1

Turbulence intensity Iv(h) 1/(C0* ln (h/z0))

Mean wind velocity Vh (h) Vb,0 x Cdirx C0x krx ln (h/z0) m/s

Dynamic wind pressure qh (h) 0.5* * Vh (h)2

N/m2

Peak wind pressure qp (h) [ 1+7 Iv(h)] x qh (h) N/m2

Wind Load Tower Panels

QWt qp(h) x Gtx (1+0.2 sin22) x Ctx At

Panel Ht Iv(h) Vh(h) qh(h) qp(h) Ct At Qwt

4.25 0.225 21.431 287.055 739.167 2.896 4.694 2512.027

10.75 0.186 25.907 419.483 965.65 2.369 3.769 1649.961

15.5 0.174 27.672 478.587 1061.506 2.019 2.62 977.5078

19.075 0.168 28.673 513.838 1118.111 1.838 3.979 1351.456

22.55 0.164 29.481 543.206 1166.806 1.809 4.839 1617.621

25.65 0.16 30.102 566.332 1200.624 1.824 4.486 1512.052

Project : 132kV DC for Liberia Eletricty CorporationDocument No :

Title :Loading Calculation For Tower Type

" S (0-2) "


9/30

DATE

07.02.2014


SSN SJL/TA

Technical Parameters

OPGW Data:

Diameter Dg = 13.2 mm

Weight Wg = 6.64 N/m

No. of OPGW Ng = 1 NosTension at 15+NW Gtn = 10186 N

Tension at 15+FW Gtf = 21961 N

Tension at 15+QW Gtq = 19049 N

Tension at 15+HW Gth = 14702 N

Tension at 15+HQW Gthq = 13348 N

EW Data:

Diameter De = 14 mm

Weight We = 6.13 N/m

No .of EW Ne = 1 Nos

Tension at 15+NW Etn = 9433 N

Tension at 15+FW Etf = 22233 N

Tension at 15+QW Etq = 19193 N

Tension at 15+HW Eth = 14564 N

Tension at 15+HQW Ethq = 13078 N

Conductor Data:

Diameter Dc = 21.8 mm

Weight Wc = 9.61 N/m

No. of Conductor Nc = 1 Nos

Tension at 15+FW Ctn = 14975 N

Tension at 15+FW Ctf = 33795 N

Tension at 15+QW Ctq = 29272 N

Tension at 15+HW Cth = 22423 N

Tension at 15+HQW Cthq = 20234 NInsulator Data:

Diameter Di (Assumed) = 190 mm

Weight Wi (Assumed) = 736 N

Length Li Tender Dwg = 2100 mm

No. of Insulator Ni Tender Dwg = 1 Nos

Span

Weight Span Min Wtsx = 450 m

Weight Span Max Wtsn = 150 m

Wind Span Ws = 350 m

Wind Pressure

T.W Pressure on OPGW/EW Qwev = 802.64 N/m2

T.W Pressure on Conductor Qwcv = 786.25 N/m2

T.W Pressure on Insulator Qwins = 1396.08 N/m2

Q.W Pressure on OPGW/EW Qwev1 0.8*Qwev = 642.12 N/m2

Q.W Pressure on Conductor Qwcv1 0.8*Qwcv = 629 N/m2

Q.W Pressure on Insulator Qwins1 0.8*Qwins = 1116.86 N/m2

Line Angle:

Min Line Angle idmin = 0

Max Line Angle idmax = 2



" 2NS (0-2) "

Pag


10/30

DATE

07.02.2014


SSN SJL/TA



" 2NS (0-2) "

Vertical Load

Conductor

Weight of Conductor Max Min

=(Wc*Nc*Wtsx(Wtsn)) = 4325 1442 NWeight of Insulator

=(Wi*Ni) = 736 736 N

Weight of Linesmen with tool = 981 981 N

= 6042 3159 N

OPGW

Weight of OPGW Max Min

=(Wg*Ng*Wtsx(Wtsn)) = 2988 996 N


= 3969 1977 N

Earthwire

Weight of EW Max Min

=(We*Ne*Wtsx(Wtsn)) = 2759 920 N


= 3740 1901 N

Transverse Load

Conductor

Wind of Conductor

=(Dc*Nc*Ws*Qwcv) = 5999 N

Wind of Insulator

=(Di*Ni*Li*Qwins) = 557 N

Deviation Load

=(2*Ctf*sin(idmin/2)) = 0 N

= 6556 NOPGW

Wind of OPGW

=(Dg*Ng*Ws*Qwev) = 3708 N

Deviation Load

=(2*Gtf*sin(idmin/2)) = 0 N

= 3708 N

Earth Wire

Wind of EW

=(De*Ne*Ws*Qwev) = 3933 N

Deviation Load

=(2*Etf*sin(idmin/2)) = 0 N

= 3933 N

= (6.13*1*450(150))

Total Vertical Load, Nvex/Nven

=(2*22233*sin(0/2))

Total Vertical Load, Nte

=(2*21961*sin(0/2))

Total Vertical Load, Ntg

= (0.014*1*350*802.64)

= (0.0132*1*350*802.64)

= (0.19*1*2.1*1396.08)

=(2*33795*sin(0/2))

Total Vertical Load, Ntc

= (0.0218*1*350*786.25)

= (6.64*1*450(150))

Total Vertical Load, Nvgx/Nvgn

= (736*1)

Total Vertical Load, Nvcx/Nvcn

= (9.61*1*450(150))

Condition: Normal Working, Transverse Wind

Page


11/30

DATE

07.02.2014


SSN SJL/TA



" 2NS (0-2) "

Vertical Load

Conductor



=(Wi*Ni) = 736 736 N


= 6042 3159 N

OPGW

Weight of OPGW



= 3969 1977 N

Earthwire

Weight of EW



= 3740 1901 N

Transverse Load

Conductor

Wind of Conductor

=(Dc*Nc*Ws*Qwcv1) = 4799 N

Wind of Insulator

=(Di*Ni*Li*Qwins1) = 446 N

Deviation Load

=(2*Ctq*sin(idmin/2)) = 0 N

= 5245 NOPGW

Wind of OPGW

=(Dg*Ng*Ws*Qwev1) = 2967 N

Deviation Load

=(2*Gtq*sin(idmin/2)) = 0 N

= 2967 N

Earth Wire

Wind of EW

=(De*Ne*Ws*Qwev1) = 3146 N

Deviation Load

=(2*Etq*sin(idmin/2)) = 0 N

= 3146 NTotal Vertical Load, Nqte

= (0.014*1*350*642.12)

=(2*19193*sin(0/2))

= (0.0132*1*350*642.12)

=(2*19049*sin(0/2))

Total Vertical Load, Nqtg

= (0.19*1*2.1*1116.86)

=(2*29272*sin(0/2))

Total Vertical Load, Nqtc

= (0.0218*1*350*629)

= (6.13*1*450(150))

Total Vertical Load, Nvex1/Nven1

= (6.64*1*450(150))

Total Vertical Load, Nvgx1/Nvgn1

= (9.61*1*450(150))

= (736*1)

Total Vertical Load, Nvcx1/Nvcn1

Condition: Normal Working, Oblique Wind

Page


12/30

DATE

07.02.2014


SSN SJL/TA



" 2NS (0-2) "

Vertical Load

Conductor



=(Wi*Ni) = 736 736 N

= 5061 2178 N

OPGW

Weight of OPGW


= 2988 996 N

Earthwire

Weight of EW


= 2759 920 N

Transverse Load

Conductor

Wind of Conductor


Wind of Insulator


Deviation Load


= 6556 N

OPGW

Wind of OPGW

=(Dg*Ng*Ws*Qwev) = 3708 NDeviation Load


= 3708 N

Earth Wire

Wind of EW


Deviation Load


= 3933 N

Longitudinal load

Conductor

Deviation Load

=(0.5*Ctf*cos(idmin/2)) = 16898 N

= 16898 N

OPGW

Deviation Load

=(0.65*Gtf*cos(idmin/2)) = 14275 N

= 14275 N

Earth Wire

=(0.65*Etf*cos(idmin/2)) = 14451 N

Deviation Load

= 14451 NTotal Vertical Load, Ble

=(0.65*22233*cos(0/2))

=(0.65*21961*cos(0/2))

Total Vertical Load, Blg

=(0.5*33795*cos(0/2))

Total Vertical Load, Blc

= (0.014*1*350*802.64)

=(2*22233*sin(0/2))

Total Vertical Load, Bte

= (0.0132*1*350*802.64)

=(2*21961*sin(0/2))

Total Vertical Load, Btg

=(2*33795*sin(0/2))

Total Vertical Load, Btc

= (0.0218*1*350*786.25)

= (0.19*1*2.1*1396.08)

= (6.13*1*450(150))

Total Vertical Load, Bvex/Bven

= (6.64*1*450(150))

Total Vertical Load, Bvgx/Bvgn

= (736*1)

Total Vertical Load, Bvcx/Bvcn

Condition: Broken, Transverse Wind

= (9.61*1*450(150))

Page


13/30

DATE

07.02.2014


SSN SJL/TA



" 2NS (0-2) "

Vertical Load

Conductor



=(Wi*Ni) = 736 736 N

= 5061 2178 N

OPGW

Weight of OPGW


= 2988 996 N

Earthwire

Weight of EW


= 2759 920 N

Transverse Load

Conductor

Wind of Conductor


Wind of Insulator


Deviation Load


= 5245 N

OPGW

Wind of OPGW

=(Dg*Ng*Ws*Qwev1) = 2967 NDeviation Load


= 2967 N

Earth Wire

Wind of EW


Deviation Load


= 3146 N

Longitudinal load

Conductor

Deviation Load

=(0.5*Ctq*cos(idmin/2)) = 14636 N

= 14636 N

OPGW

Deviation Load

=(0.65*Gtq*cos(idmin/2)) = 12382 N

= 12382 N

Earth Wire

Deviation Load

=(0.65*Etq*cos(idmin/2)) = 12475 N

= 12475 N

=(0.65*19193*cos(0/2))

Total Vertical Load, Bqle

Total Vertical Load, Bqlc

=(0.65*19049*cos(0/2))

Total Vertical Load, Bqlg

Total Vertical Load, Bqte

=(0.5*29272*cos(0/2))

= (0.014*1*350*642.12)

=(2*19193*sin(0/2))

= (0.0132*1*350*642.12)

=(2*19049*sin(0/2))

Total Vertical Load, Bqtg

= (0.19*1*2.1*1116.86)

=(2*29272*sin(0/2))

Total Vertical Load, Bqtc

= (0.0218*1*350*629)

= (6.13*1*450(150))

Total Vertical Load, Bvex1/Bven1

= (6.64*1*450(150))

Total Vertical Load, Bvgx1/Bvgn1

= (9.61*1*450(150))

= (736*1)

Total Vertical Load, Bvcx1/Bvcn1

Condition: Broken, Oblique Wind

Page


14/30

DATE

07.02.2014


SSN SJL/TA



" 2NS (0-2) "

Vertical Load

Conductor



=(Wi*Ni) = 736 736 N

= 5061 2178 N

OPGW

Weight of OPGW


= 2988 996 N

Earthwire

Weight of EW


= 2759 920 N

Transverse Load

Conductor

Wind of Conductor


Wind of Insulator


Deviation Load


= 6556 N

OPGW

Wind of OPGW

=(Dg*Ng*Ws*Qwev) = 3708 NDeviation Load


= 3708 N

Earth Wire

Wind of EW


Deviation Load


= 3933 N

Longitudinal load

Conductor

Deviation Load

=(0.2*Ctf*cos(idmin/2)) = 6759 N

= 6759 N

OPGW

Deviation Load

=(0.4*Gtf*cos(idmin/2)) = 8784 N

= 8784 N

Earth Wire

Deviation Load

=(0.4*Etf*cos(idmin/2)) = 8893 N

= 8893 N

=(0.4*22233*cos(0/2))

Total Vertical Load, Cle

=(0.4*21961*cos(0/2))

Total Vertical Load, Clg

=(0.2*33795*cos(0/2))

Total Vertical Load, Clc

= (0.014*1*350*802.64)

=(2*22233*sin(0/2))

Total Vertical Load, Cte

= (0.0132*1*350*802.64)

=(2*21961*sin(0/2))

Total Vertical Load, Ctg

=(2*33795*sin(0/2))

Total Vertical Load, Ctc

= (0.0218*1*350*786.25)

= (0.19*1*2.1*1396.08)

= (6.13*1*450(150))

Total Vertical Load, Cvex/Cven

= (6.64*1*450(150))

Total Vertical Load, Cvgx/Cvgn

= (736*1)

Total Vertical Load, Cvcx/Cvcn

Condition: Cascading, Transverse Wind

= (9.61*1*450(150))

Page


15/30

DATE

07.02.2014


SSN SJL/TA



" 2NS (0-2) "

Vertical Load

Conductor



=(Wi*Ni) = 736 736 N


= 6042 3159 N

OPGW

Weight of OPGW



= 3969 1977 N

Earthwire

Weight of EW



= 3740 1901 N

Transverse Load

Conductor

Wind of Conductor


Wind of Insulator


Deviation Load


= 5245 NOPGW

Wind of OPGW


Deviation Load


= 2967 N

Earth Wire

Wind of EW


Deviation Load


= 3146 N

Longitudinal load

Conductor

=(0.2*Ctq*cos(idmin/2)) = 5854 N

= 5854 N

OPGW

=(0.4*Gtq*cos(idmin/2)) = 7620 N

= 7620 N

Earth Wire

=(0.4*Etq*cos(idmin/2)) = 7677 N

= 7677 NTotal Vertical Load, Cqle

=(0.4*19049*cos(0/2))

Total Vertical Load, Cqlg

=(0.4*19193*cos(0/2))

=(0.2*29272*cos(0/2))

Total Vertical Load, Cqlc

=(2*19193*sin(0/2))

Total Vertical Load, Cqte

=(2*19049*sin(0/2))

Total Vertical Load, Cqtg

= (0.014*1*350*642.12)

Total Vertical Load, Cqtc

= (0.0132*1*350*642.12)

= (0.0218*1*350*629)

= (0.19*1*2.1*1116.86)

=(2*29272*sin(0/2))

Total Vertical Load, Cvex1/Cven1

Total Vertical Load, Cvgx1/Cvgn1

= (6.13*1*450(150))

Total Vertical Load, Cvcx1/Cvcn1

= (6.64*1*450(150))

= (9.61*1*450(150))

= (736*1)

Condition: Cascading, Oblique Wind

Page


16/30

DATE

07.02.2014


SSN SJL/TA



" 2NS (0-2) "

Vertical Load

Conductor



=(Wi*Ni) = 736 736 N


= 6042 3159 N

OPGW

Weight of OPGW



= 3969 1977 N

Earthwire

Weight of EW



= 3740 1901 N

= (6.13*1*450(150))

Total Vertical Load, Evex/Even

= (6.64*1*450(150))

Total Vertical Load, Evgx/Evgn

= (9.61*1*450(150))

= (736*1)

Total Vertical Load, Evcx/Evcn

Condition: Erection, No Wind

Page


17/30

DATE

07.02.2014


SSN SJL/TA



" 2NS (0-2) "

Vertical Load

Conductor



=(Wi*Ni) = 736 736 N

= 5061 2178 N

OPGW

Weight of OPGW


= 2988 996 N

Earthwire

Weight of EW


= 2759 920 N

Transverse Load

Conductor

Wind of Conductor

=(Dc*Nc*Ws*0.5*Qwcv) = 3000 N

Wind of Insulator


Deviation Load

=(2*Cth*sin(idmin/2)) = 0 N

= 3279 N

OPGW

Wind of OPGW=(Dg*Ng*Ws*0.5*Qwev) = 1854 N

Deviation Load

=(2*Gth*sin(idmin/2)) = 0 N

= 1854 N

Earth Wire

Wind of EW

=(De*Ne*Ws*0.5*Qwev) = 1966 N

Deviation Load

=(2*Eth*sin(idmin/2)) = 0 N

= 1966 N

Total Vertical Load, Etg

= (0.014*1*350*0.5*802.64)

=(2*14702*sin(0/2))

= (0.19*1*2.1*0.5*1396.08)

=(2*22423*sin(0/2))

Total Vertical Load, Etc

=(2*14564*sin(0/2))

Total Vertical Load, Ete

= (0.0218*1*350*0.5*786.25)

= (6.64*1*450(150))

Total Vertical Load, Evgx0/Evgn0

= (6.13*1*450(150))

= (0.0132*1*350*0.5*802.64)

Condition: Erection, 50% Transverse Wind

= (9.61*1*450(150))

= (736*1)

Total Vertical Load, Evcx0/Evcn0

Total Vertical Load, Evex0/Even0

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" 2NS (0-2) "

Vertical Load

Conductor



=(Wi*Ni) = 736 736 N


= 6042 3159 N

OPGW

Weight of OPGW



= 3969 1977 N

Earthwire

Weight of EW



= 3740 1901 N

Transverse Load

Conductor

Wind of Conductor

=(Dc*Nc*Ws*0.5*Qwcv1) = 2400 N

Wind of Insulator

=(Di*Ni*Li*0.5*Qwins1) = 223 N

Deviation Load

=(2*Cthq*sin(idmin/2)) = 0 N

= 2623 NOPGW

Wind of OPGW


Deviation Load

=(2*Gthq*sin(idmin/2)) = 0 N

= 2967 N

Earth Wire

Wind of EW


Deviation Load

=(2*Ethq*sin(idmin/2)) = 0 N

= 3146 N

=(2*13078*sin(0/2))

Total Vertical Load, Eqte

Total Vertical Load, Eqtg

= (0.014*1*350*642.12)

= (0.0132*1*350*642.12)

=(2*13348*sin(0/2))

= (0.19*1*2.1*0.5*1116.86)

=(2*20234*sin(0/2))

Total Vertical Load, Eqtc

Total Vertical Load, Evex1/Even1

= (0.0218*1*350*0.5*629)

Total Vertical Load, Evgx1/Evgn1

= (6.13*1*450(150))

Total Vertical Load, Evcx1/Evcn1

= (6.64*1*450(150))

= (9.61*1*450(150))

= (736*1)

Condition: Cascading, 50% Oblique Wind

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(Maximum Weight Span) (Minimum Weight Span)

3969 3740 1977 1901

0 0 0 0

3708 3933 3708 39336042 6042 3159 3159

0 0 0 0

6556 6556 6556 6556

6042 6042 3159 3159

0 0 0 0

6556 6556 6556 6556

6042 6042 3159 3159

0 0 0 0

6556 6556 6556 6556

Load Case:1&2

Normal Working Condition: Tranverse Wind Load

F.O.S (Loads) 1.5

F.O.S S.W 1.1


3969 3740 1977 19010 0 0 0

2967 3146 2967 3146

6042 6042 3159 3159

0 0 0 0

5245 5245 5245 5245

6042 6042 3159 3159

0 0 0 0

5245 5245 5245 5245

6042 6042 3159 3159

0 0 0 0

5245 5245 5245 5245

Load Case:3&4

Normal Working Condition: Oblique Wind Load

F.O.S (Loads) 1.5

F.O.S S.W 1.1

132kV DC for Liberia Eletricty Corporation

Loading Calculation For Tower Type

" S (0-2) "


Title :


20/30

DATE

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" S (0-2) "


Title :

(Maximum Weight Span) E1 (Maximum Weight Span) C1

2988 3740 3969 3740

14275 0 0 0

3708 3933 3708 39336042 6042 5061 6042

0 0 16898 0

6556 6556 6556 6556

6042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

6042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

Load Case:5&6

Broken Condition: Transverse Wind

F.O.S (Loads) 1.2

F.O.S S.W 1.1

(Maximum Weight Span) C2 (Maximum Weight Span) C3

3969 3740 3969 3740

0 0 0 0

3708 3933 3708 39336042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

5061 6042 6042 6042

16898 0 0 0

6556 6556 6556 6556

6042 6042 5061 6042

0 0 16898 0

6556 6556 6556 6556

Load Case:7&8


F.O.S (Loads) 1.2

F.O.S S.W 1.1


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" S (0-2) "


Title :


3969 2759 3969 3740

0 14451 0 0

3708 3933 3708 39336042 6042 6042 5061

0 0 0 16898

6556 6556 6556 6556

6042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

6042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

Load Case:9&10


F.O.S (Loads) 1.2

F.O.S S.W 1.1


3969 3740 3969 3740

0 0 0 0

3708 3933 3708 39336042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

6042 5061 6042 6042

0 16898 0 0

6556 6556 6556 6556

6042 6042 6042 5061

0 0 0 16898

6556 6556 6556 6556

Load Case:11&12


F.O.S (Loads) 1.2

F.O.S S.W 1.1


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" S (0-2) "


Title :

(Minimum Weight Span) E1 (Minimum Weight Span) C1

996 1901 1977 1901

14275 0 0 0

3708 3933 3708 39333159 3159 2178 3159

0 0 16898 0

6556 6556 6556 6556

3159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

3159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

Load Case:13&14


F.O.S (Loads) 1.2

F.O.S S.W 1.1

(Minimum Weight Span) C2 (Minimum Weight Span) C3

1977 1901 1977 1901

0 0 0 0

3708 3933 3708 39333159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

2178 3159 3159 3159

16898 0 0 0

6556 6556 6556 6556

3159 3159 2178 3159

0 0 16898 0

6556 6556 6556 6556

Load Case:15&16


F.O.S (Loads) 1.2

F.O.S S.W 1.1


23/30

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" S (0-2) "


Title :


1977 920 1977 1901

0 14451 0 0

3708 3933 3708 39333159 3159 3159 2178

0 0 0 16898

6556 6556 6556 6556

3159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

3159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

Load Case:17&18


F.O.S (Loads) 1.2

F.O.S S.W 1.1


1977 1901 1977 1901

0 0 0 0

3708 3933 3708 39333159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

3159 2178 3159 3159

0 16898 0 0

6556 6556 6556 6556

3159 3159 3159 2178

0 0 0 16898

6556 6556 6556 6556

Load Case:19&20


F.O.S (Loads) 1.2

F.O.S S.W 1.1


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" S (0-2) "


Title :


2988 3740 3969 3740

14275 0 0 0

3708 3933 3708 39336042 6042 5061 6042

0 0 16898 0

6556 6556 6556 6556

6042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

6042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

Load Case:21&22

Broken Condition: Oblique Wind

F.O.S (Loads) 1.2

F.O.S S.W 1.1


3969 3740 3969 3740

0 0 0 0

3708 3933 3708 39336042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

5061 6042 6042 6042

16898 0 0 0

6556 6556 6556 6556

6042 6042 5061 6042

0 0 16898 0

6556 6556 6556 6556

Load Case:23&24


F.O.S (Loads) 1.2

F.O.S S.W 1.1


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" S (0-2) "


Title :


3969 2759 3969 3740

0 14451 0 0

3708 3933 3708 39336042 6042 6042 5061

0 0 0 16898

6556 6556 6556 6556

6042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

6042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

Load Case:25&26


F.O.S (Loads) 1.2

F.O.S S.W 1.1


3969 3740 3969 3740

0 0 0 0

3708 3933 3708 39336042 6042 6042 6042

0 0 0 0

6556 6556 6556 6556

6042 5061 6042 6042

0 16898 0 0

6556 6556 6556 6556

6042 6042 6042 5061

0 0 0 16898

6556 6556 6556 6556

Load Case:27&28


F.O.S (Loads) 1.2

F.O.S S.W 1.1


26/30

DATE

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" S (0-2) "


Title :


996 1901 1977 1901

14275 0 0 0

3708 3933 3708 39333159 3159 2178 3159

0 0 16898 0

6556 6556 6556 6556

3159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

3159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

Load Case:29&30


F.O.S (Loads) 1.2

F.O.S S.W 1.1


1977 1901 1977 1901

0 0 0 0

3708 3933 3708 39333159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

2178 3159 3159 3159

16898 0 0 0

6556 6556 6556 6556

3159 3159 2178 3159

0 0 16898 0

6556 6556 6556 6556

Load Case:31&32


F.O.S (Loads) 1.2

F.O.S S.W 1.1


27/30

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" S (0-2) "


Title :


1977 920 1977 1901

0 14451 0 0

3708 3933 3708 39333159 3159 3159 2178

0 0 0 16898

6556 6556 6556 6556

3159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

3159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

Load Case:33&34


F.O.S (Loads) 1.2

F.O.S S.W 1.1


1977 1901 1977 1901

0 0 0 0

3708 3933 3708 39333159 3159 3159 3159

0 0 0 0

6556 6556 6556 6556

3159 2178 3159 3159

0 16898 0 0

6556 6556 6556 6556

3159 3159 3159 2178

0 0 0 16898

6556 6556 6556 6556

Load Case:35&36


F.O.S (Loads) 1.2

F.O.S S.W 1.1


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" S (0-2) "


Title :


2988 2759 2988 920

8784 8893 8784 8893

3708 3933 3708 39335061 5061 2178 2178

6759 6759 6759 6759

6556 6556 6556 6556

5061 5061 2178 2178

6759 6759 6759 6759

6556 6556 6556 6556

5061 5061 2178 2178

6759 6759 6759 6759

6556 6556 6556 6556

Load Case:41&42

Cascading Condition: Tranverse Wind

F.O.S (Loads) 1.2

F.O.S S.W 1.1


3969 3740 3969 19017620 7677 7620 7677

2967 3146 2967 3146

6042 6042 3159 3159

5854 5854 5854 5854

5245 5245 5245 5245

6042 6042 3159 3159

5854 5854 5854 5854

5245 5245 5245 5245

6042 6042 3159 3159

5854 5854 5854 5854

5245 5245 5245 5245

Load Case:43&44

Cascading Condition: Oblique Wind

F.O.S (Loads) 1.2

F.O.S S.W 1.1


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" S (0-2) "


Title :


3969 3740 1977 1901

0 0 0 0

0 0 0 06042 6042 3159 3159

0 0 0 0

0 0 0 0

6042 6042 3159 3159

0 0 0 0

0 0 0 0

6042 6042 3159 3159

0 0 0 0

0 0 0 0

Load Case:41&42

Erection & Maintenance Condition: No Wind

F.O.S (Loads) 2

F.O.S S.W 1.1


2988 2759 996 9200 0 0 0

1854 1966 1854 1966

5061 5061 2178 2178

0 0 0 0

3279 3279 3279 3279

5061 5061 2178 2178

0 0 0 0

3279 3279 3279 3279

5061 5061 2178 2178

0 0 0 0

3279 3279 3279 3279

Load Case:43&44

Erection & Maintenance Condition: 50% Transverse Wind

F.O.S (Loads) 2

F.O.S S.W 1.1


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" S (0-2) "


Title :


3969 3740 1977 1901

0 0 0 01854 1966 1854 1966

6042 6042 3159 3159

0 0 0 0

3279 3279 3279 3279

6042 6042 3159 3159

0 0 0 0

3279 3279 3279 3279

6042 6042 3159 3159

0 0 0 0

3279 3279 3279 3279

Load Case:43&44

Erection & Maintenance Condition: 50% Transverse Wind

F.O.S (Loads) 2

F.O.S S.W 1.1

Documents

Wind Pressure Calculation