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Prestress/Post-Tensioning Strand Systems

Avar Construction Systems, Incorporated

ACS 4.5

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
4 1/2" 165.2 3500 124

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.46" AISI 11L17 Rc 59-63 7° 10' Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
3 1/2" Ø x 23/8" C1045 H.R. Normalized12/18/1985Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 1.035"
Strand hole diameter: 0.63"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
6 1/4" Square x 7/8" ASTM A-362/14/1985Unconfirmed
Bearing hole diameter: 2 3/8"
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
6.0" 24 Gage Galvanized2/14/1985Unconfirmed
6.0" Polyethylene .06"2/14/1985Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
1 3/4" I.D. 26 Gage2/14/1985Unconfirmed

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