V-7103 Leg Report

8/10/2019 V-7103 Leg Report

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PV Elite 2012 Licensee: ALPHA PROJECTS SERVICES PVT LTDFileName : V-7103 A-B_ISMC_150-------------------------------Leg Check, (Operating Case) : Step: 18 3:56p Nov 19,2014

RESULTS FOR LEGS : Operating Case Description: LEGS

Legs attached to: node 20

Section Properties : Channel ISMC200

India ISI Structural Steel Data

Overall Leg Length 200.000 cm

Effective Leg Length Leglen 170.000 cm

Distance Leg Up Side of Vessel 0.000 cm

Number of Legs Nleg 4

Cross Sectional Area for ISMC200 Aleg 28.210 cm²

Section Inertia ( strong axis ) 1819.293 cm**4

Section Inertia ( weak axis ) 140.399 cm**4

Section Modulus ( strong axis ) 181900.750 mm ³

Section Modulus ( weak axis ) 26300.107 mm ³

Radius of Gyration ( strong axis ) 80.300 mm

Radius of Gyration ( weak axis ) 22.300 mm

Leg Orientation - Strong Axis

Overturning Moment at top of Legs 1645.4 kgf-m.

Total Weight Load at top of Legs W 10287.0 kgf

Total Shear force at top of Legs 709.5 kgf

Additional force in Leg due to Bracing Fadd 0.0 kgf

Occasional Load Factor Occfac 1.333

Effective Leg End Condition Factor k 1.000

Note: The Legs are Not Cross Braced

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The Leg Shear Force includes Wind and Seismic Effects

Pad Width along Circumference C11P 300.000 mm

Pad Length along Vessel Axis C22P 200.000 mm

Pad Thickness Tpad 12.000 mm

Maximum Shear at top of one Leg [Vleg]:

= ( Max(Wind, Seismic) + Fadd ) * ( Imax / Itot )

= ( 709.5 + 0.0 ) * ( 1819.0/3918.56 )

= 329.34 kgf

Axial Compression, Leg futhest from N.A. [Sma]

= ((W/Nleg)+(Mleg/(Nlegm*Rn)))/Aleg)

= ((10287 / 4 ) + (1645 /( 2 * 162.60 )))/ 28.210 )

= 109.10 kgf/cm²

Axial Compression, Leg closest to N.A. [Sva]

= ( W / Nleg ) / Aleg

= ( 10287 / 4 ) / 28.210

= 91.17 kgf/cm²

Allowable Comp. for the Selected Leg (KL/r < Cc ) [Sa]:

= Occfac * ( 1-(kl/r)²/(2*Cc²))*Fy /

( 5/3+3*(Kl/r)/(8*Cc)-(Kl/r³)/(8*Cc³)

= 1.33 * ( 1-( 76.23 )²/(2 * 127.18² )) * 2531 /

( 5/3+3*( 76.23 )/(8* 127.18 )-( 76.23³)/(8* 127.18³)

= 1484.45 kgf/cm²

Bending at the Bottom of the Leg closest to the N.A. [S]:

= ( Vleg * Leglen * 12 / Smdsa )

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= ( 329.34 * 170.00 * 12 / 181900.75 )

= 307.80 kgf/cm²

Allowable Bending Stress[Sb]:

= ( 0.6 * Fy * Occfac )

= ( 0.6 * 2531 * 1.33 )

= 2024.33 kgf/cm²

AISC Unity Check [Sc]( must be < or = to 1.00 ) :

= (Sma/Sa)+(0.85*S)/((1-Sma/Spex)*Sb)

= (109 /1484 )+( 0.85 *307.795 )/(( 1 -109 /2449 ) *2024 )

= 0.2088

Bolting Size Requirement for Leg Baseplates :

Baseplate Material SA-516 70

Baseplate Allowable Stress SBA 1406.14 kgf/cm²

Baseplate Length B 300.0000 mm

Baseplate Width D 175.0000 mm

Baseplate Thickness BTHK 20.0000 mm

Leg Dimension Along Baseplate Length d 0.0000 mm

Leg Dimension Along Baseplate Width b 0.0000 mm

Dist. from the Leg Edge to Bolt Hole Center z 50.0000 mm

Bolt Material SA-307 B

Bolt Allowable Stress STBA 492.15 kgf/cm²

Anchor Bolt Nominal Diameter BOD 30.0000 mm

Number of Anchor Bolts in Tension per Leg NB 1

Total Number of Anchors Bolt per Leg NBT 1

Ultimate 28-day Concrete Strength FCPRIME 210.921 kgf/cm²

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Baseplate analysis is performed for Angle, Beam & Pipe legs only.

PV Elite is a trademark of Intergraph CADWorx & Analysis Solutions, Inc. 2012

V-7103 Leg Report

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