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Prestress/Post-Tensioning Strand Systems

DYWIDAG-Systems International

9-0.6

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
9 0.6" 527.4 3500 396

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.654" AISI C12L14 Rc 58-67 7° 30' ± 10' 0.56" ± 0.003"Unconfirmed
1.654" AISI 11L17 7° 30' ± 10' 0.56" ± 0.003"Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
7" Ø x 2 3/8" AISI C1045-C10504/21/1986Unconfirmed
5.750" Ø x 2.441" AISI C 1045 (Hot roll)3/27/1991Unconfirmed
5.512" Ø x 2.165" ASTM A-521-76 (Forged)9/17/1991Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 1.102"-1.122"
Strand hole diameter: 0.669"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
11 1/8"Square x 1 5/8" ASTM A-363/16/1979Unconfirmed
11 1/8" Square x 1 1/2" ASTM A-361/18/1991Unconfirmed
7.480 Ø x 4.921 (MPA) ASTM A-536 Gr 65-45-129/5/1991Unconfirmed
Bearing hole diameter: 4.449"
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
19" ASTM D1248 ABS 0.10"2/20/1981Unconfirmed
17" ASTM D1248 - Polyethylene 0.08"5/8/1984Unconfirmed
25" ASTM D1248 - Polyethylene 0.08"5/8/1984Unconfirmed
13.980" ASTM D4976 - Hard Polyethylene9/5/1991Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
2 7/8" O.D. 26 Gage3/16/1979Unconfirmed

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