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Prestress/Post-Tensioning Strand Systems

DYWIDAG-Systems International

37-0.6 (MPA)

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
37 0.6" 2168.2 N/A 1626.2

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.654" AISI C12L14 3 7° 30' ± 10' 0.560"Unconfirmed
1.654" AISI 11L173 7° 30' ± 10' 0.560"Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
10.774" Ø x 5.315" ASTM A-521-76(Forged)2/27/1995Unconfirmed
Wedge hole angle: 7° ± 10'
Wedge hole diameter: 1.142"
Strand hole diameter: 0.669"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
15.354" Square x 13.780" ASTM A536 Gr 60-42-102/27/1995Unconfirmed
24.5" Square x 4" A36 Steel Plate4/6/1995Unconfirmed
Bearing hole diameter: 8.465"
Spiral size and turns: #6-8 turns

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
24.608" ASTM D4976 - H.D.P.E2/27/1995Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
U.S std Gauge 26(Galv Corrugated )2/27/1995Unconfirmed

SPIRAL
ASTM-A 615 Grad 60 #6 @ 2.625 pitch 20" O.D. 8 full turn

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