Transmission And Substation Foundations - Technical Design Manual (TD06088E)

CHANCE® DRIVECAST™ SCREW DISPLACEMENT PILES The CHANCE Drivecast screw displacement pile utilizes soil displacement methodology which allows the pile to be advanced into the soil by rotation. Pile sections are comprised of a centralized steel shaft and a patented displacement assembly placed at regular intervals from the pile tip. By design, the pile establishes a cylindrical void which allows a column of grout to be immediately pulled down from a gravity-fed reservoir, creating a grouted, high capacity pile. Drivecast piles are made from structural steel meeting the requirements of ASTM A500, A572, A656, and A1018. The displacement paddle extends from the perimeter of the central shaft to the outer edge of the lower helix. Depth requirements are achieved by adding 5’ or 10’ extension sections via couplings and structural grade bolts.

DISPLACEMENT PLATES FOR CASED GROUT COLUMNS

DRAWINGS AND RATINGS

Lead Displacement Plates Catalog Number Plate Dia (in)

Extension Displacement Plates Catalog Number Plate Dia (in)

Casing Dia (in)

Product Series

Casing Dia (in)

Product Series

T1100911

5

4

SS5/SS150

T1100913

5

4

SS5/SS150

C1100912

7

6

SS175

C1100914

7

6

SS175

DISPLACEMENT PLATES FOR UNCASED GROUT COLUMNS

Lead Displacement Plates Catalog Number Plate Dia (in) Product Series T1100915 5 SS5/SS150 C1100916 5 SS175

Lead Displacement Plates Catalog Number Plate Dia (in) Product Series T1100917 5 SS5/SS150 C1100918 5 SS175

COMMON LEAD CONFIGURATIONS

CHANCE Helical Round-Cornered Square Shaft Leads used with HELICAL PULLDOWN ® Micropile (1)

Figure 6-41

Helix Plate Diameter (in)

Catalog Number

Nominal Length (ft)

Effective Length (ft)

Helix Grade

Type

Weight

A B C D

SS5

C1100921

8 10 12

-

7

76.2

79

50

SS175

C1100922

8 10 12

-

7

76.2

100 50

(1) HELICAL PULLDOWN ® Micropiles use Standard Exten-

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