Transmission And Substation Foundations - Technical Design Manual (TD06088E)

P p .......................................................................... Passive Earth Pressure P crit ............................................................... Critical Compression Load E ................................................................................Modulus of Elasticity

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I ........................................................................................Moment of Inertia

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K .......................................................................End Condition Parameter

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L u ..............................................................................Unsupported Length d ...................................................................Foundation Shaft Diameter

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L ....................................................................... Foundation Shaft Length

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Kl/r ................................................................................ Slenderness Ratio

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P cr .......................................................................... Critical Buckling Load E p ....................................Modulus of Elasticity of Foundation Shaft I p ............................................Moment of Inertia of Foundation Shaft k h .......................................................... Modulus of Subgrade Reaction U cr ..............................................................................Dimensionless Ratio y ................................................Lateral Deflection of Shaft at Point x

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x ......................................................................... Distance Along the Axis

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EI ...................................... Flexural Rigidity of the Foundation Shaft

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Q ........................................................................Axial Compressive Load

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DESIGN METHODOLOGY

E s y .......................................................... Soil Reaction per Unit Length E s .................................Secant Modulus of the Soil Response Curve C a ...................................................................................... Adhesion Factor

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DISCLAIMER

The information in thismanual is provided as a guide to assist youwith your design and inwriting your own specifications.

Installation conditions, including soil and structure conditions, vary widely from location to location and from point to point on a site.

Independent engineering analysis and consulting state and local building codes and authorities should be conducted prior to any installation to ascertain and verify compliance to relevant rules, regulations and requirements.

Hubbell Power Systems, Inc., shall not be responsible for, or liable to you and/or your customers for the adoption, revision, implementation, use or misuse of this information. Hubbell, Inc., takes great pride and has every confidence in its network of installing contractors and dealers.

Hubbell Power Systems, Inc., does NOT warrant the work of its dealers/installing contractors in the installation of CHANCE ® Civil Construction foundation support products.

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