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Prestress/Post-Tensioning Strand Systems

Contech

12-0.6 (Lang anchor head)

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
12 0.6" 703.2 3500 506.3

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.875" AISI 12L142 7° 10' ± 10' 0.620" x 4°Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
Without 1 1/8" center hole Unconfirmed
7.30" Ø x 3.25" Cast 65-45-12 Ductile Iron9/29/1995Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 1.17"
Strand hole diameter: 0.66"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
17" X 17" X 21/2" ASTM A-36 (Bearing plate was not included of approval )Unconfirmed
Bearing hole diameter: 5.625"
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
There are no trumpet components for this system at this time

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