Chance Technical Design Manual

TABLE OF CONTENTS

Round Shaft Helical Piles and Anchors................................................................................................. 7-29 Chance Rock-It Helical Lead......................................................................................................................7-75 Type SS/RS Combination Helical Piles.................................................................................................. 7-76 Chance Helical Pulldown Micropiles........................................................................................................7-77 Remedial Repair Brackets For Chance Helical Piles......................................................................... 7-81 New Construction Pile Caps......................................................................................................................7-90 SECTION 8: DESIGN EXAMPLES Design Example 1: Atlas Resistance Piers...............................................................................................8-2 Design Example 2: Atlas Resistance Piers with Integrated Tieback.............................................8-3 Design Example 3: Helical Pile Foundation for New Construction.............................................. 8-5 Design Example 4: Light Commercial Structure................................................................................. 8-6 Design Example 5: Helical Pulldown Micropiles for New Construction.....................................8-10 Design Example 6: Helical Piles for Boardwalks.................................................................................8-14 Design Example 7: Helical Piles for Boardwalks with Lateral Support...................................... 8-15 Design Example 8: Helical Tieback Anchors In Clay......................................................................... 8-16 Design Example 9: Helical Tieback Anchors In Sand....................................................................... 8-17 Design Example 10: Soil Screw Retention Wall System................................................................... 8-19 Design Example 11: Helical Piles/Anchors for Telecommunication Towers..............................8-24 Design Example 12: Helical Anchors for Pipeline Buoyancy Control.......................................... 8-31 Design Example 13: Type RS Helical Piles for Lateral Support.................................................... 8-35 Design Example 14: Instant Foundations for Street Light Supports.........................................8-36 Design Example 15: Foundation Earth Pressure Resistance.........................................................8-39 Design Example 16: Buckling Example Using the Davisson Method........................................ 8-40 Design Example 17: Buckling Example Using the Finite-Difference Method...........................8-41 Design Example 18: Buckling Example Using the Finite-Element Method..............................8-43 Design Example 19: Monopole Foundation with Steel Grillage & RS5500 Helical Piles....8-44 SECTION 9: SOIL SCREW® RETENTION WALL SYSTEM Introduction....................................................................................................................................................... 9-2 Soil Screw® Retention Wall System........................................................................................................... 9-2 Preliminary Design Considerations........................................................................................................... 9-4 Geotechnical And Structural Engineering............................................................................................. 9-5 Limiting Load Capacities...............................................................................................................................9-7 General Construction Considerations of Underpinning/Shoring Systems.................................9-7 Concepts And Applications Of Underpinning/Shoring Systems.................................................. 9-8 Case Study 1 - High Foundation Line Load With Shallow Cut....................................................... 9-9 Case Study 2 - Low Foundation Line With Deep Cut...................................................................... 9-12 SECTION 10: INSTANT FOUNDATION® SYSTEM Introduction......................................................................................................................................................10-2 Design.................................................................................................................................................................10-2 Laterally Loaded Foundations...................................................................................................................10-6 Instant Foundations® System Specifications........................................................................................ 10-7 Product Specifications................................................................................................................................. 10-7 Pole Load Determination Data Sheet.....................................................................................................10-9

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