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Prestress/Post-Tensioning Strand Systems

Schwager Davis Incorporated

SDI 22.6-8

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
22 0.6" 1289 3500 966.8

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside Diameter
1-3/4" AISI 12L142 7°
1-3/4" AISI 11L172 7°

ANCHOR HEADS
Anchor Heads Size Material Authorization Date
9" x 3 3/4" w/step A536 GR. 80-55-06
Wedge hole angle:
Wedge hole diameter:
Strand hole diameter:

BEARING PLATES
Bearing Plates Size Material Authorization Date
15.5" O.D. x 3" A536 GR. 80-55-06
Bearing hole diameter: 6 7/8"
Spiral size and turns:

TRUMPETS
Trumpets Size Material Authorization Date
21 7/8" x 4 3/16"(1/8" thick) HDPE

DUCTS
Ducts Size Material Authorization Date
Galvanized Spiro

SPIRAL
#4 spiral @ 17" OD, 6 turns at 3.5" pitch