Transmission And Substation Foundations - Technical Design Manual

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

RS9625.395 Helical Pile and Anchor Product Specifications

Hot-rolled HSS 9-5/8-inch, 0.395 inch nominal wall with 80 ksi minimum yield strength

Shaft

Corroded 9.612 in 244.1 mm Corroded 8.903 in 226.1 mm

Shaft Size, Od 9.625 in

244.5 mm

Shaft Size, Id*

8.89 in

225.8 mm

Corroded 110.47 in 4 Corroded 10.30 in 2 Corroded 22.95 in 3 Corroded 30.1 in

Moment Of Inertia (I)*

4772.1 cm 4

114.65 in 4

4598.1 cm 4

ASSEMBLY OF RS9625.395 FIGURE 6-43

Shaft Area (A)*

10.69 in 2

68.9 cm 2

66.45 cm 2

Section Modulus (S x-x )*

23.8 in 3

390.4 cm 3

376.2 cm 3

Perimeter

30.2 in

76.7 cm

76.4 cm

Coupling

Welded external sleeve flush fit joint

Four 1-1/2 inch diameter ASTM F1554 Grade 105 threaded studs 0.625-inch thick, formed on matching metal dies, ASTM A572 Grade 50 or better Hot dip galvanized per ASTM A123 Grade 75, 3.0 mil minimum thickness or Bare Steel

Coupling Bolts

Helix Plates

Coatings

Torque Properties Torque Correlation Factor

3 ft- 1

10 m- 1

Torque Rating 200,000 ft∙lb

271,164 N∙m

Structural Capacity

Nominal

LRFD Design

Tension Strength

600 kip

2669 kN 450 kip 2002 kN

Allowable Tension Strength

300 kip

1334.5 kN

Torque-Correlated Capacity Capacity Limit Based Ultimate

Allowable

On Torque Correlation, Tension / Compression

600 kip

2669 kN 300 kip 1334.5 kN

Note: * Computed with 93% of wall thickness per AISC 360-10, B4.2

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