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CALCULATION
SHEET FOR GUYED STEEL MAST HEIGHT 46.00 M. |
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PROJECT
: GUY TOWER 46.0 M. (TYPICAL) |
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| I |
GENERAL |
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PREFACE
AND GENERAL VIEW |
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THE
STRUCTURAL OF GUYED STEEL MAST IS |
TRIANGLE |
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CROSS
SECTION MAST |
PIPE |
60.5-4
mm. |
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BRACING
MEMBER OF MAST |
Round
bars |
19 |
MM |
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DESIGN
REFERENCE |
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MAST,GUY,WIND
FORCE |
E.I.A.
STANDARD RS-222-C,D,E |
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DESIGN
MAST MEMBER,GUY,PLATE |
AISC.STANDARD |
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ANCHOR
FOUNDATION |
ACI.STANDARD
318 |
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FOUNDATION
PARAMETER |
E.I.A.
STANDARD RS-222-C,D,E |
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| II |
DESIGN
CRITERIA |
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WIND
LOAD VELOCITY |
130 |
KM./HR. |
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CONVERT
VELOCITY TO |
36.11 |
M./S. |
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GUY-1 |
GUY-2 |
GUY-3 |
GUY-4 |
GUY-5 |
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MAIN
POST OF MAST |
60.5 |
60.5 |
60.5 |
60.5 |
60.5 |
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DIAGONAL
MEMBER OF MAST |
19 |
19 |
19 |
19 |
19 |
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WIDTH
OF TOWER |
0.61 |
0.61 |
0.61 |
0.61 |
0.61 |
M. |
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GROSS
AREA(Ag) |
1.05 |
1.05 |
1.05 |
1.05 |
1.05 |
M2/M |
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PROJECT
AREA OF FEEDER LINE AND LIGHTENING |
0.19 |
0.19 |
0.19 |
0.19 |
0.19 |
M2/M |
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MAIN
PIPE + DIAGONAL AREA PER 1 METER |
0.121 |
0.121 |
0.121 |
0.121 |
0.121 |
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PROJECT
AREA OF ROUND STRC.COMPONENTS 1 FACE(Ar) |
0.311 |
0.311 |
0.311 |
0.311 |
0.311 |
M2/M |
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PROJECT
AREA OF FLAT STRC.COMPONENTS 1 FACE(Af) |
0.050 |
0.051 |
0.050 |
0.050 |
0.050 |
M2/M |
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SOLIDITY
RATIO(e) |
(Ar+Af)/Ag |
(Ar+Af)/Ag |
(Ar+Af)/Ag |
(Ar+Af)/Ag |
(Ar+Af)/Ag |
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0.344 |
0.344 |
0.344 |
0.344 |
0.344 |
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FOR
ROUND STRUCTURAL COMPONENTS Rr=0.51e2+0.57 |
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REDUCTION
FACTOR(Rr) |
0.630 |
0.631 |
0.630 |
0.630 |
0.630 |
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WIND
DIRECTION FACTOR FOR ROUND COMPONENTS(Dr) |
1 |
1 |
1 |
1 |
1 |
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WIND
DIRECTION FACTOR FOR FLAT STC. COMPONENTS(Df) |
1 |
1 |
1 |
1 |
1 |
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STRUCTURAL
CO-EFFICIENT |
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STRUCTURAL
FORCE CO-EFFICIENT(Cf) |
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Cf
= 4.0e2 -5.9e+4.0 (square cross section) |
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Cf
= 3.4e2 -4.7e+3.4 (Round cross section)
= |
2.185 |
2.185 |
2.185 |
2.185 |
2.185 |
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EFFECTIVE
PROJECTIVE AREA IN 1 FACE ( Ae) =(DfxAf+DrxArxRr))= |
0.246 |
0.247 |
0.246 |
0.246 |
0.246 |
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| III |
WIND
FORCE |
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GUY-1 |
GUY-2 |
GUY-3 |
GUY-4 |
GUY-5 |
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WIND
VELOCITY |
36.11 |
36.11 |
36.11 |
36.11 |
36.11 |
M/S |
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HEIGHT
OF MAST |
46 |
61 |
61 |
61 |
61 |
M. |
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HEIGHT
TO MID POINT OF SECTION(Z) |
5 |
16 |
28 |
38.5 |
44.5 |
M. |
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EXPOSURE
CO-EFFICIENT(Kz) = (Z/10)2/7,
1.0<Kz,2.58 = |
1.000 |
1.144 |
1.342 |
1.470 |
1.532 |
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THE
VELOCITY PRESSURE(Qz) = 0.613KzV2
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799.360 |
914.244 |
1072.758 |
1174.943 |
1224.582 |
Pa |
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GUST
RESPONSE FACTOR(Gh) = 0.65+0.60/(H/10)1/7
= |
1.132 |
1.113 |
1.113 |
1.113 |
1.113 |
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WIND
FORCE = Qz X Gh X Cf X Ae = |
49.674 |
55.928 |
65.541 |
71.784 |
74.817 |
KG./M. |
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Design
wind load (Pw) = wind force/project area** |
201.66 |
226.68 |
266.08 |
291.43 |
303.74 |
KG./SQ.M. |
>
127 kg./sq.m. ok |
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**For
recheck total load on mast |
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| IV |
WIND
FORCE ON GUY WIRE |
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GUY-1 |
GUY-2 |
GUY-3 |
GUY-4 |
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CONSIDER
HORIZONTAL DIST FROM TOWER BASE TO ANCHR |
15.00 |
15.00 |
15.00 |
15.00 |
M. |
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HEIGHT
TOWER BASE TO TENSION POINT |
10 |
22 |
34 |
43 |
M. |
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DIAMETER
OF GUY STRAND |
0.016 |
0.016 |
0.016 |
0.016 |
M. |
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ANGLE
OF GUY |
33.707 |
55.741 |
66.228 |
70.805 |
DEGREE |
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SIN
D |
0.555 |
0.827 |
0.915 |
0.944 |
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COS
D |
0.832 |
0.563 |
0.403 |
0.329 |
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LENGTH
OF GUY(Lc) |
18.028 |
26.627 |
37.162 |
45.541 |
M. |
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GUY
DRAG FORCE CO-EFFICIENT (Cd) =1.2SIN3
D |
0.205 |
0.678 |
0.920 |
1.011 |
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GUY
LIFT FORCE CO-EFFICIENT (Cl) = 1.2 SIN3
D COS D = |
0.307 |
0.461 |
0.405 |
0.352 |
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TOTAL
DRAG FORCE ON GUY Fd =QzGhCd D Lc = |
5.459 |
29.951 |
66.584 |
98.217 |
KG. |
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TOTAL
LIFT FORCE ON GUY Fl = QzGhCl d Lc = |
8.183 |
20.399 |
29.328 |
34.192 |
KG. |
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| V |
WIND
LOAD ON ANTENNA |
FX |
FY |
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SPAN
AND DISTANCE FROM TOP |
AXIAL
FORCE |
WT.+MOUNTING |
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9-
SECTOR ANTENNA
DISTANCE FROM TOP 8.0 M. |
300 |
270 |
KG. |
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1-
GRID ANT. 1.8 M.
DISTANCE FROM TOP 15.0 M. |
150 |
95 |
KG. |
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| VI |
MATERIALS |
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STEEL
TOWER USE |
JIS.STANDARD
G3444 |
FY=2400
KSC. |
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STEEL
BRACING USE |
GIS.3101STD.TIS.20-2527 |
FY=2400
KSC. |
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| VII |
ELEVATION
OF MAST |
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HEIGHT |
M. |
0 |
10 |
22 |
34 |
43 |
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GUY
SPAN |
M. |
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MAIN
POST |
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PIPE
60.5 MM. |
PIPE
60.5 MM. |
PIPE
60.5 MM. |
PIPE
60.5 MM. |
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DIAGONAL
MEMBER |
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RB19 |
RB19 |
RB19 |
RB19 |
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HORIZONTAL
MEMBER |
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RB19 |
RB19 |
RB19 |
RB19 |
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GUY
DIAMETER & PROPERTIES |
INCHS |
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5/16
EHS. |
2-5/16
EHS. |
5/16
EHS. |
2-5/16
EHS. |
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| VIII |
STRESS
ANALYSIS |
RESULT
FROM MFEAP II,P1 VERSION 3.3 DEVLP.BY MICRO-ACE CLUB,DIVISION OF
STRUCTURAL ENGINEERING,ASIAN INSTITUTE OF TECHNOLOGY. |
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GUY-1 |
GUY-2 |
GUY-3 |
GUY-4 |
GUY-5 |
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| 1 |
WIND
FORCE |
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ON
MAST |
KG./M. |
49.674 |
55.928 |
65.541 |
71.784 |
74.817 |
KG./M. |
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ON
GUY |
KG. |
5.459 |
29.951 |
66.584 |
98.217 |
KG. |
KG. |
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| 2 |
MOMENT
OF INNERTIA |
CM4 |
13384 |
13384 |
13384 |
13384 |
13384 |
CM4 |
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| 3 |
SECTION
MODULUS |
CM3 |
382 |
382 |
382 |
382 |
382 |
CM3 |
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| 4 |
MAX.BENDING
MOMENT |
KG.-CM. |
92016 |
309760 |
67083 |
78757 |
8 |
KG.-CM. |
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| 5 |
REACTION
FORCE |
KG. |
8560 |
-7450 |
-5315 |
-3560 |
-270 |
KG. |
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| 6 |
MAX.SHEAR
FORCE |
KG. |
342 |
517 |
598 |
437 |
525 |
KG. |
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| IX |
DESIGN
ON GUY WIRE |
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| 1 |
DIAMETER/TYPE
OF GUY |
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5/16
EHS. |
2-5/16
EHS. |
5/16
EHS. |
2-5/16
EHS. |
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| 2 |
SECTIONAL
AREA |
CM
2 |
0.44 |
0.88 |
0.44 |
0.88 |
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| 3 |
UNIT
WEIGHT |
KG. |
0.6785 |
1.357 |
0.6785 |
1.357 |
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| 4 |
LENGTH |
M. |
18.028 |
26.627 |
37.162 |
45.541 |
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| 5 |
YOUNG'S
MODULUS |
TSC. |
1680 |
1680 |
1680 |
1680 |
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| 6 |
HEIGHT |
M. |
10 |
22 |
34 |
43 |
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| 7 |
DISTANCE |
M. |
15.00 |
15.00 |
15.00 |
15.00 |
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| 8 |
ANGLE
OF GUY |
DEGREE |
33.707 |
55.741 |
66.228 |
70.805 |
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| 9 |
SIN
D |
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0.555 |
0.827 |
0.915 |
0.944 |
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| 10 |
COS
D |
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0.832 |
0.563 |
0.403 |
0.329 |
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| 11 |
TENSION
FORCE(ANALYSIS RESULT) |
KG. |
606 |
2040 |
1546 |
3230 |
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| 12 |
INITIAL
TENSION |
KG. |
100 |
100 |
100 |
100 |
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| 13 |
TEMPERATURE
EFFECT(30 Difference Temp.) |
KG. |
30.00 |
51.70 |
72.15 |
88.42 |
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| 14 |
TENSION
FORCE IN GUY |
KG. |
736 |
2192 |
1718 |
3418 |
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| 15 |
TENSION
STRESS IN GUY |
KSC. |
1,673 |
2,491 |
3,905 |
3,885 |
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| 16 |
BREAKING
STRENGTH |
KG. |
4587 |
9174 |
4587 |
9174 |
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| 17 |
FACTOR
OF SAFETY(F.S. > 2.00----->SAFETY) |
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6.23 |
4.19 |
2.67 |
2.68 |
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| 18 |
VERTICAL
FORCE FROM GUY TO MAST |
KG. |
336.15 |
1685.50 |
1414.46 |
3049.77 |
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| 19 |
SWAY
OF MAST(WIND VELOCITY 130 KM/HR.)** |
CM. |
7.5 |
21.5 |
34 |
38 |
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| 20 |
HEGHT
OF CONSIDER POINT |
CM. |
2200.00 |
3400.00 |
4300.00 |
4600.00 |
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WIND
DIRECTION **(Consider 130 KM/HR) |
DEGREE |
0.20 |
0.36 |
0.45 |
0.47 |
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<0.70
degree OK. |