Prestress/Post-Tensioning Strand Systems

DYWIDAG-Systems International

27-0.6 MA

Last edit date: 3/20/2024

GENERAL

Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
27 0.6" 1582.2 4000 1188

WEDGES

Wedges Length Material Wedge Parts Wedge Angle Wedge Inside Diameter
1.654" AISI C12L143 7° 30' ± 10' 0.56" ± 0.003"
1.654" AISI C11L173 7° 30' ± 10' 0.56" ± 0.003"

ANCHOR HEADS

Anchor Heads Size Material Authorization Date
9.449"Ø x 4.134" ASTM A-521-76 (forged)9/17/1991
9.5"Ø x 4.75" HR C104510/18/2007
9.449"Ø x 4.134" ASTM A536 Gr.80-55-068/18/2014
Wedge hole angle:
Wedge hole diameter:
Strand hole diameter:

BEARING PLATES

Bearing Plates Size Material Authorization Date
12.402"Ø x 9.449" ASTM A536 Gr. 65-45-1210/18/2007
12.402"Ø x 9.469" ASTM A536 Gr. 65-45-128/18/2014
Bearing hole diameter:
Spiral size and turns:

TRUMPETS

Trumpets Size Material Authorization Date
22.625" x 6.339" Hard Polyethylene10/18/2007
26.628" x 6.339" Hard Polyethylene10/18/2007

DUCTS

Ducts Size Material Authorization Date
4.375" O.D. ASTM A653 Gr.6010/18/2007

SPIRAL

A615 Grade 60 #6 @ 2.25" pitch; 17" O.D.; 7 turns