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Sag RodsNo
Total Weight
125,46Kgs.
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LinerYes
Deflection Limit (Wind Loads)
180
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Welded Plate
Yes
Deflection Limit (Wind Load)
120
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Design Calculation Sheet for Zee Girts
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Spans m10,006,506,50
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WL PRESSUREkN/m0,791,090,64
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WL SUCTIONkN/m-1,08-1,49-0,88
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The above values are calculated by adding the loads and multiplying by the purlin spacing.
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DL+LL
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11111111111DL+LL+COL
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Girts Sizes250Z25250Z20250Z20
WL PRESSURE
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Girts LapsFFF
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DL+WL
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Wind Increase1,33
WL SUCTION
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By Structrural analysis using Stiffness Matrix Analysis the following Internal Forces are obtained
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** WL PRESSURE
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Moment-Left Support kN.m0,00#VALUE!0,000,000,000,000,000,000,000,00
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Moment-Left LapkN.m0,000,000,000,000,000,000,000,000,000,00
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Moment-Mid SpankN.m8,00#VALUE!5,760,000,003,380,000,000,000,00
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Moment-Right LapkN.m#VALUE!0,000,000,000,000,000,000,000,000,00
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Shear-Left LapkN#VALUE!0,003,540,000,002,080,000,000,000,00
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Shear-Right LapkN#VALUE!0,00-3,540,000,00-2,080,000,000,000,00
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** WL SUCTION
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Moment-Left Support kN.m0,00#VALUE!0,000,000,000,000,000,000,000,00
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Moment-Left LapkN.m0,000,000,000,000,000,000,000,000,000,00
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Moment-Mid SpankN.m#VALUE!#VALUE!-7,870,000,00-4,650,000,000,000,00
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Moment-Right LapkN.m#VALUE!0,000,000,000,000,000,000,000,000,00
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Shear-Left LapkN#VALUE!0,00-4,840,000,00-2,860,000,000,000,00
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Shear-Right LapkN#VALUE!0,004,840,000,002,860,000,000,000,00
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By checking the stresses as per AISI 1996 Edition
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the following Stress Ratios ( Actual Stress / Allowable Stress ) are obtained
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Shear strength as per section C3.2
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Bending strength as per section C3.1
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Web Crippling strength as per section C3.4
The Maximum Value of these Stress Ratios are reported below
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Combined Bending & Shear strength as per section C3.3
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Combined Bending & Web Crippling as per section C3.5
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** WL PRESSURE
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Left Support#VALUE!#VALUE!0,130,130,080,08
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Left Lap#VALUE!#VALUE!0,130,08
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Mid Span#VALUE!#VALUE!0,400,23
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Right Lap#VALUE!#VALUE!0,130,08
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Deflection Cm #VALUE!#VALUE!1,800,000,001,050,000,000,000,00
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Allowable Cm#VALUE!#VALUE!3,613,61
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** WL SUCTION
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Left Support#VALUE!#VALUE!0,180,180,110,11
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Left Lap#VALUE!#VALUE!0,180,11
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Mid Span#VALUE!#VALUE!0,540,32
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Right Lap#VALUE!#VALUE!0,180,11
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0,000,000,000,000,000,000,000,000,000,00
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Deflection Cm -Ve#VALUE!#VALUE!2,460,000,001,450,000,000,000,00
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Allowable Cm-Ve#VALUE!#VALUE!5,425,42
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#VALUE!
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#VALUE!
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Last Revised on 28-May-2005
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