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Prestress/Post-Tensioning Strand Systems

Schwager Davis Incorporated

SDI C4.6

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
4 0.6" 234 3500 176

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.80" 2 7° 0.62"Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
5 3/4" x 2 1/8" A536 GR. 80-55-069/19/2007Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 1 1/8"
Strand hole diameter:

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
none used Unconfirmed
Bearing hole diameter:
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
13" x 3 1/4" transition HDPE plastic9/19/2007Unconfirmed
8 7/16" x 2 11/16 HDPE plastic9/19/2007Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
2" I.D. Plastic9/19/2007Unconfirmed
1" x 3" Galvanized spiro9/19/2007Unconfirmed

SPIRAL
4 #5 stirrups

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