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Prestress/Post-Tensioning Strand Systems

VSL

CS/EC5-31

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
31 1/2" 1280.3 N/A 960.2

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.47" AISI 11L17 7° 10 '± 5' Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
9.00" Ø x 4.00" ASTM A536 Gr 80-55-061/3/1996Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 1.035"
Strand hole diameter: 0.63"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
Total with concrete 3.94" Unconfirmed
12.60" Ø x2.05"(Metal) ASTM -A536 Gr 80-55-061/3/1996Unconfirmed
Bearing hole diameter: 6.89"
Spiral size and turns: #5-7 turns

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
22.44" P. E3/28/1994Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
4 1/8" O.D. 3/28/1994Unconfirmed

SPIRAL
#5- 18"O.D. 2" Pitch, 7 turn, Gr 60 for CS5-31

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