Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/~phil/hardware/telescope/Feed_Arm_Truss_Table_27apr10.pdf Дата изменения: Wed Apr 28 01:38:42 2010 Дата индексирования: Sat Jun 26 00:45:42 2010 Кодировка: Поисковые слова: вечный календарь

ARECIBO RADIO OBSERVATORY FEED ARM TRUSS MEMBER CAPACITY AND LOAD TABLE

FEED ARM TRUSS 1963 Force Table
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(-) Compression (+) Tension 1992 Operational
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Fy = Fu = 1992 Survival
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50 70

ksi ksi Tension Limited Members

Italic Members Fy = 36 ksi Compression Limited Members 1963 Ratio 1992 Ratio 1992 Ratio 2010 Ratio Remarks
Operational Operational Survival Operational

Member

Original Member

Area
[in2]

1992 Reinforcement

Area
[in2]

2010 STAAD Forces (no WL)
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Length Gross Area
[ft] [in2]

0.6FyAg
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1963 Ratio 1992 Ratio 1992 Ratio 2010 Ratio Capacity
Operational Operational Survival Operational [kip]

Top Chords U1-U2 2-C8x11.5 U2-U3 2-C8x11.5 U3-U4 2-C8x11.5 U4-U5 2-C8x11.5 U5-U6 2-C8x13.75 U6-U7 2-C8x13.75 U7-U8 2-C8x13.75 Bottom Chords Lo-L1 2-C8x11.5 L1-L2 2-C8x11.5 L2-L3 2-C8x11.5 L3-L4 2-C8x13.75 L4-L5 2-C8x13.75 L5-L6 2-C8x13.75 L6-L7 2-C8x13.75 L7-L8 2-C8x13.75 Verticals U1-L1 2-L3.5x2.5x5/16 U2-L2 2-L4x3x7/16 U3-L3 2-L5x3x1/2 U4-L4 2-C8x11.5 U5-M52 W10x60 + 2-9.25"x1/2" M52-M5 W10x60 + 2-9.25"x1/2" M5-M51 W10x39 M51-L5 W10x39 U6-M62 2-L4x3x3/8 M62-M6 2-L4x3x3/8 M6-M61 2-L4x3x3/8 M61-L6 2-L4x3x3/8 U7-M7 2-L4x3x3/8 M7-L7 2-L4x3x3/8 U78-M78 2-L3.5x2.5x5/16 U8-L8 2-C8x11.5 Diagonals L0-U1 2-L3.5x2.5x5/16 L1-U2 2-L4x3x5/16 L2-U3 2-L4x3x5/16 L3-U4 2-L5x3x5/16 L4-U5 2-L6x3.5x5/16 L45-M5 2-C8x11.5 M5-L56 2-C8x11.5 M5-M562 2-C8x11.5 M562-U6 2-C8x11.5 M5-M561 2-C8x11.5 M561-L6 2-C8x11.5 M6-U7 2-C8x11.5 M6-L7 2-C8x11.5 U7-M78 2-L3.5x2.5x5/16 M7-U8 2-C8x11.5 M7-L8 2-C8x11.5 Outriggers O5-M52 M52-M52' 05-M51 M51-M51' M52-M51' M51-M52' M52-M562 M562-M62 M51-M561 M561-M61 M51-M62 M61-M52 U5-M562 L5-M561 A B C D

6.74 6.74 6.74 6.74 8.08 8.08 8.08 6.74 6.74 6.74 8.08 8.08 8.08 8.08 8.08 3.56 5.74 7.5 6.74 26.85 26.85 11.5 11.5 4.96 4.96 4.96 4.96 4.96 4.96 3.56 6.74 3.56 4.18 4.18 4.8 5.74 6.74 6.74 6.74 6.74 6.74 6.74 6.74 6.74 3.56 6.74 6.74

2-6"x1/2" 2-6"x3/4" 2-6"x1/2"

6 9 6

33 71 99 129 174 155/-37 156/-91 -34 -72 -97 -120 -149 -172 12/-134 46/-113 -35 -35 -41 -48 88 88 27 27 31/-4 31/-4 -31 -31 17/-9 10/-19 -17 7/-12 35 51 55 58 65 19 20 -66 -66 70 70 -49 52 15 6/-30 30

53 107 178 239 276 250 185 -54 -106 -153 -231 -355 -336 -252 -214 -23 -47 -67 -67 -80 -97 -110 71 -12 33 2/-26 17 37 13/-18 0 30 67 89 117 105 116 3 44 29 11/-22 -40 33 -79 81 2 4/-38 38 -199 -190 296 212 -17 -17 16/-9 60 15 -44 -65 53 46 -35

12 46/-3 116/-12 194/-30 228/-21 176 106 -13 -47 -107 -179 -296 3/-277 -179 -122 -11 -41 -52 -50 89/-160 49/-134 -155 243/-196 25/-30 44/-32 91/-63 114/-71 25/-18 12/-20 0 4/-5 14 39 80 84 108 88/-29 76/-10 26/-29 39/-31 40/-40 50/-40 26/-58 60/-15 2 32/-41 41/-31 -291 -248 413 285 45/-85 45/-85 34/-10 60 15/-31 -50 -73 60 38/-4 37/-5

25 55 97 176 182 167 106/-23 -28 -49 -75 -167 -287 -267 -182 26/-153 -22 -23 -48 -56 -94 -97 -130 62 25/-9 59 35/-49 50/-7 44/-5 48/-18 0 19 32 47 98 125 123 33 30 9/-36 14/-55 30/-7 65/-2 -90 94/-24 5 34/-53 53/-48 -218 -177 336 239 -28 -28 28 48 -18 -46 -63 54 20 -29 -6 7 3 -2

15 18.5 20 21.5 21.425 21.425 21.425 13.568 15.798 19.236 10.27 21.852 21.601 21.488 21.432 9.7357 14.693 19.963 24.648 5.7764 8.5322 5.7764 5.7764 5.7442 16.477 16.479 8.2383 33.5

6.74 6.74 6.74 12.74 17.08 14.08 8.08 6.74 6.74 6.74 12.58 17.08 17.08 12.58 17.08 3.56 5.74 7.5 6.74 26.85 26.85 11.5 19.5 4.96 4.96 4.96 4.96 4.96 4.96 3.56 6.74 3.56 4.18 8.18 4.8 5.74 6.74 6.74 6.74 6.74 6.74 6.74 6.74 6.74 3.56 6.74 6.74 14.68 11.74 20.7 14.68 8.96 8.96 6.74 6.74 6.74 6.74 6.74 6.74 3.38 3.38 3.38 3.38 2.38 2.38

202.20 202.20 202.20 382.20 512.40 422.40 242.40

16.32% 35.11% 48.96% 33.75% 33.96% 36.70% 64.36%

26.21% 52.92% 88.03% 62.53% 53.86% 59.19% 76.32%

5.93% 22.75% 57.37% 50.76% 44.50% 41.67% 43.73%

12.36% 27.20% 47.97% 46.05% 35.52% 39.54% 43.73% -165.05 -188.05 -181.76 -319.99 -379.13 -383.52 -315.14 -428.23 -47.42 -59.72 -118.00 -103.96 20.60% 38.29% 53.37% 37.50% 39.30% 44.85% 42.52% 26.39% 73.81% 58.60% 34.75% 46.17% 32.72% 56.37% 84.18% 72.19% 93.64% 87.61% 79.96% 49.97% 48.51% 78.70% 56.78% 64.45% 7.88% 24.99% 58.87% 55.94% 78.07% 72.23% 56.80% 28.49% 23.20% 68.65% 44.07% 48.10% 16.96% 26.06% 41.26% 52.19% 75.70% 69.62% 57.75% 35.73% 46.40% 38.51% 40.68% 53.87%

2-6"x3/8" 2-6"x3/4" 2-6"x3/4" 2-6"x3/8" 2-6"x3/8"

4.5 9 9 4.5 9

377.40 512.40

3.18% 8.98%

5.07%

2-8"x1/2" 2-L4x3x3/8 2-L4x3x3/8 2-L4x3x3/8

8 4.96 4.96 4.96

579.96 579.96 248.40 488.40 107.14 148.80 148.80 148.80 107.14 107.14 202.20 76.90 90.29 210.29 144.00 172.20 202.20 202.20 202.20 202.20 202.20 202.20 202.20 202.20 76.90 202.20 202.20

15.17% 15.17% 10.87% 5.53% 28.94% 20.83%

15.35% 8.45% -208.00 14.54% 22.18% 49.75% 23.33% 29.57% 61.16% 76.61% 23.33% 11.20% 1.98% 18.21% 43.20% 38.04% 58.33% 62.72% 43.52% 37.59% 12.86% 19.29% 19.78% 24.73% 12.86% 29.67% 2.60% 15.83% 20.28% 12.69% 23.33% 39.65% -67.94 41.07% 44.80% 9.40% 41.61% 52.06% 46.60% 86.81% 71.43% 16.32% 14.84% 4.45% 6.92% 14.84% 32.15% 46.49% 6.50% 16.82% 26.21% -30.00 -30.00 45.63% 30.00% 63.33% 38.27% 92.73% 60.00% 66.67% 72.13% 16.67% 60.00% -12.98% 52.88% 74.52% 62.50%

15.87% 9.33% 3.46% 45.52% 56.49% 26.15% 40.28% 37.75% 9.40% 9.89%

34.54% 12.13% 14.84% 87.13% 98.57% 55.64% 72.92% 67.36% 1.48% 21.76% 14.34% 5.44% 16.32% 40.06% 2.60% 1.98% 18.79%

60.00%

2-4"x1/2" 2-L5x3x5/16 2-L6x3.5x5/16

4 4.8 5.74

15.328 10.417 9.2824 18.088 26.53 27.536 27.028 27.365

34.62% 34.62% 25.72% 19.51% 2.97% 14.84%

-156.14 -179.25 -183.68 -141.18 -93.58 -88.19 -90.90 -89.10 -362.60 -331.66

42.27% 36.82%

12.27% 21.78% 84.42%

52.36%

18.57% 17.29% 21.78% 28.33% 61.98% 17.01% 45.11% 34.79% 80.25% 74.78%

23.06% 30.68% 3.81% 1.42% 96.17% 27.22% 58.31% 53.87% 60.12% 53.37%

215k/180k Gregorian (Gregorian @ 19.8°, CH1 @ 0°)

33.00%

41.81%

2-C10x25 2-C10x20 2-C10x20 +2-C10x15.3 2-C10x25 2-C10x15.3 2-C10x15.3 2-C8x11.5 2-C8x11.5 2-C8x11.5 2-C8x11.5 2-C8x11.5 2-C8x11.5 2-L4x3x1/4 2-L4x3x1/4 2-L4x3x1/4 2-L4x3x1/4 2-L3x2x1/4 2-L3x2x1/4

14.68 11.74 20.7 14.68 8.96 8.96 6.74 6.74 6.74 6.74 6.74 6.74 3.38 3.38 3.38 3.38 2.38 2.38

54.88% 57.29%

621.00 440.40 268.80 268.80 202.20 202.20 202.20

47.67% 48.14%

7.91% 29.67% 7.42%

66.51% 64.71% 16.74% 16.74% 16.82% 29.67% 7.42%

54.11% 54.27% -177.00 -177.00 13.85% 23.74% -162.13 -97.87 27.14% 66.42% 30.84% 74.59% 28.37% 64.37% 9.60% 9.60% 48.02% 48.02% 15.82% 15.82%

14.159 25.746

202.20 101.40 101.40 101.40

26.21% 45.36%

29.67% 37.48% 36.49%

26.71% 19.72% -35.05 6.90% 17.12%

90%-100% Stressed Over 100% Stressed

K:\PROJ\A&W\4176\CALCS\2010 Analysis Models (VMA)\Results\Feed Arm Truss Table

2010/04/15 VMA