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Prestress/Post-Tensioning Strand Systems

DYWIDAG-Systems International

5-0.6"

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
5 0.6" 293 3500 220

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.77" AISI C12L14 Rc 58-67 7° 20'± 5' Unconfirmed
1.77" AISI 11L17 7° 20'± 5' Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
5" Square x 2 1/2" AISI 10456/25/1980Unconfirmed
5 1/8" Ø x 2.559" (MPA) Cast ASTM A-536 Gr 80-55-063/27/1991Unconfirmed
Wedge hole angle: 6°
Wedge hole diameter: 1.102"
Strand hole diameter: 0.669"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
8 1/4" Square x 1 1/8" ASTM A-366/25/1980Unconfirmed
5.9" x 3.543" round A536 Gr. 65-45-123/27/1991Unconfirmed
Bearing hole diameter: 3.543"
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
9.842" ASTM D4976 PE Hard3/27/1991Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
There are no duct components for this system at this time

SPIRAL
-

Caltrans contact: Jim Ma, Concrete Committee Chair, jim.ma@dot.ca.gov

*As attested to by the supplier as of April 14, 2026 per definition in 2 CFR 184 and 23 CFR 635.410. Stakeholders should use this information in conjunction with corresponding Caltrans special provision section 6-1.04 to understand applicable requirement for the project.

The California Department of Transportation (Caltrans) is implementing statutory changes required by the Bipartisan Infrastructure Law -Build America, Buy America Act (BABA), as outlined in 2 CFR 184 and 23 CFR 635.410.

https://www.fhwa.dot.gov/construction/cqit/buyam.cfm