Transmission And Substation Foundations - Technical Design Manual

Section 7: Design Examples

CONTENTS Design Example 1: Helical Piles/Anchors for Telecommunication Towers . . . . . . . . . . . . . . . . . . . . . . . ......................... 7-2 Design Example 2: Lattice Tower Design with Fixed Head grillage . . . . . . . . . . . . . . . . . . . . . . . . . . ........................... 7-9 Design Example 3: H-Frame Structure Design with Concrete Cap and Micropile . . . . . . . . . . . . . . . . . . . . .................... 7-13 Design Example 4: Traditional Monopole Helical Foundation Design . . . . . . . . . . . . . . . . . . . . . . . . . .........................7-19 Design Example 5: Guyed Transmission Structure Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .............................. 7-24 Design Example 6: Helical Pile Foundation for New Substation Construction . . . . . . . . . . . . . . . . . . . . . ..................... 7-29 Design Example 7: Type RS Helical Piles for Substation Lateral Support . . . . . . . . . . . . . . . . . . . . . . . ....................... 7-30 Design Example 8: Helical Pile Foundation for Remediation of Substation Bus Support . . . . . . . . . . . . . . . . .................7-31 Design Example 9: Instant Foundations for Street Light Supports . . . . . . . . . . . . . . . . . . . . . . . . . . ........................... 7-33 Design Example 10: Foundation Earth Pressure Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................. 7-36 Design Example 11: Buckling Example Using The Davisson Method . . . . . . . . . . . . . . . . . . . . . . . . . ........................... 7-37 Design Example 12: Buckling Example Using the Finite-Difference Method . . . . . . . . . . . . . . . . . . . . . . ...................... 7-38 Design Example 13: Buckling Example Using the Finite-Difference Method . . . . . . . . . . . . . . . . . . . . . . ...................... 7-40 Design Example 14: Monopole Foundation with Steel Grillage And RS5500 Helical Piles . . . . . . . . . . . . . . . ................. 7-41

DISCLAIMER

The information in this manual is provided as a guide to assist you with your design and in writing 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 should be conducted and state and local building codes and authorities should be consulted 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 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® Construction foundation support products.

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