Transmission And Substation Foundations - Technical Design Manual

SECTION 6: PRODUCT DRAWINGS AND RATINGS Type RS9625.395 Helical Piles

• 600 kip Ultimate – 300 kip Allowable Capacity • Installation Torque Rating – 200,000 ft∙lb • Multi-Purpose 9-5/8” Diameter, 0.395” Wall, Round HSS Shaft with Sleeve Couplings

Description: Chance® Type RS9625.395 helical piles have 600 kip ultimate capacity and 300 kip working or allowable capacity in compression or tension. This capacity is based on well-documented correlations with installation torque, which is recognized as one method to determine capacity per IBC Section 1810.3.3.1.9. Lead sections and extensions couple together to extend the helix bearing plates to the required load-bearing stratum. Round shaft helical piles offer increased lateral and buckling resistance compared to solid square shafts with similar torque-strength. Strength calculations are based on a design corrosion level of 50 years for most soil

conditions. Chance Type RS helical piles feature straight leading-edge helix plates that are circular in plan to provide uniform load bearing in most soil conditions. Custom lengths and helix configurations are available upon request. See below for additional information and other sections of this manual for specifications and design details.

HOLE ACCEPTS 1 1/2” DIA THREADED STUD HOLE ACCEPTS 1-1/2" DIA THREADED STUD

9.625" DIA PIPE SHAFT

9.625” DIA PIPE SHAFT

CHANCE Type RS9625.395 Helical Piles

UP TO 20’ LONG UP TO 20 ' LONG

UP TO 15’ LONG UP TO 15 ' LONG

3 x DIA SPACING TYPICAL 3 × DIA SPACING TYPICAL

TRUE HELIX FORM TRUE HELIX FORM

1 1/2” DIA THREADED STUD 1-1/2" DIA THREADED STUD

7-3/8" SQUARE

6’’ PITCH STRAIGHT LEADING EDGE 6" PITCH STRAIGHT LEADING EDGE

14” 14"

45 PILOT POINT 45 0 PILOT POINT

SINGLE-HELIX LEAD SECTION SINGLE-HELIX LEAD SECTION

TRIPLE-HELIX LEAD SECTION TRIPLE-HELIX LEAD SECTION

HELICAL EXTENSION SECTION HELICAL EXTENSION SECTION

PLAIN EXTENSION SECTION PLAIN EXTENSION SECTION

COUPLING DETAIL

COUPLING DETAIL

All Hubbell Power Systems, Inc., Chance helical products are MADE IN THE U.S.A.

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