1. Home
  2. Programs
  3. Engineering Services (DES)
  4. Authorized Materials Lists (AML)
  5. Prestress/Post-Tensioning Strand Systems

Prestress/Post-Tensioning Strand Systems

DYWIDAG-Systems International

15-0.6

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
15 0.6" 879 3500 659.2

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.770" AISI C11L17 Rc 60-643 7° 20' ± 5' Unconfirmed
1.770" AISI C12L14 Rc 60-643 7° 20' ± 5' Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
7.087" Ø x 2.756" ASTM A521-76 (Forged )9/17/1991Unconfirmed
Wedge hole angle: 7° ± 10'
Wedge hole diameter: 1.102"
Strand hole diameter: 0.669"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
9.843" Ø x7.874" ASTM A536 Gr 65-45-129/17/1991Unconfirmed
Bearing hole diameter: 5.827"
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
27 5/8" ASTM D4976 - Hard Polyethylene3/27/1991Unconfirmed

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