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

Prestress/Post-Tensioning Strand Systems

Stresstek

S7.6

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
7 0.6" 410.2 N/A 308

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.95" AISI 8620 Leaded Rc 59-62 7° 10' Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
5.35" Ø x 2 3/4" AISI C1045/C10501/3/1983Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 1.190"
Strand hole diameter: 0.690"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
9 3/4" Square x 1 3/8" ASTM A-361/3/1983Unconfirmed
Bearing hole diameter: 3.7"
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
12" Carbon Steel1/3/1983Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
3.5" O.D. 1/3/1983Unconfirmed

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