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Prestress/Post-Tensioning Strand Systems

Stresstek

S13.5

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
13 1/2" 536.9 N/A 403

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

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
6" Ø x 2.61" AISI C1050, 4140/4211/2/1970Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 0.970"
Strand hole diameter: 0.570"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
11 1/2" Square x 1 1/2" ASTM A-3611/2/1970Unconfirmed
11 1/4" Square x 1 1/4" ASTM A-36 42 KSI (Min yield )6/12/1974Unconfirmed
Bearing hole diameter: 4.42"
Spiral size and turns: none

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
16" 14 GageUnconfirmed
16" 16 Gage11/2/1970Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
2 5/8" O.D. 11/2/1970Unconfirmed

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