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Prestress/Post-Tensioning Strand Systems

VSL

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 961

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

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
9" Ø x 3.95" C1050 HR2/26/1985Unconfirmed
9" Ø x 4" ASTM A536 Gr 80-55-0610/28/1991Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 1.035"
Strand hole diameter: 0.625"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
14" Square x 13.385" ASTM A 536,Gr 80-55-062/26/1985Unconfirmed
Bearing hole diameter: 7.00"
Spiral size and turns: #4-8 turns

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
Integral ASTM A536,Gr 80-55-06Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
4 1/4" O.D. 22 GageUnconfirmed

SPIRAL
#4 17"OD, 2" pitch, 8 turn , grad 60 for EC 5-31

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