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Prestress/Post-Tensioning Strand Systems

Stresstek

S19.5

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
16 1/2" 660.8 N/A 496

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.85" AISI 86L20 59-62 7° 10' Unconfirmed
1.85" AISI C11L17 Rc 59-62 7° 10' Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
6.80" Ø x 3.18" AISI C1050, 4140/422/9/1971Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 0.970"
Strand hole diameter: 0.570"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
12 1/2" Square x 2" ASTM A-363/21/1985Unconfirmed
Bearing hole diameter: 5.3"
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
20" 16 Gage2/9/1971Unconfirmed
20" 12 Gage8/8/1973Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
3 1/4" O.D. 2/9/1971Unconfirmed

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