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Prestress/Post-Tensioning Strand Systems

Avar Construction Systems, Incorporated

ACS 34.5

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
34 1/2" 1404.2 3500 1054

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside DiameterBABA Act Information*
1.46" AISI 11L17 Rc 59-63 7° 5' Unconfirmed

ANCHOR HEADS
Anchor Heads Size Material Authorization DateBABA Act Information*
9" Square x 4" C1040-1045 H.R. Normalized1/14/1991Unconfirmed
Wedge hole angle: 7°
Wedge hole diameter: 1.035"
Strand hole diameter: 0.63"

BEARING PLATES
Bearing Plates Size Material Authorization DateBABA Act Information*
18" Square x 2 1/2" ASTM A-364/19/1985Unconfirmed
15" Square x 15" ASTM A-536 Gr 80-55-061/14/1991Unconfirmed
Bearing hole diameter: 7 5/8"
Spiral size and turns: #4-9 turns

TRUMPETS
Trumpets Size Material Authorization DateBABA Act Information*
24" 24 Gage Galvanized4/19/1985Unconfirmed
24" Polyethylene 0.06"4/19/1985Unconfirmed

DUCTS
Ducts Size Material Authorization DateBABA Act Information*
4" I.D. 24 Gage4/19/1985Unconfirmed

SPIRAL
FRO CAST BEARING PLATE: #4 SPIRAL, 17 OD., 9 TURNS AT 2,5" PITCH, TIE FIRST 2 TURNS

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