1. Home
  2. Programs
  3. Engineering Services (DES)
  4. Authorized Materials Lists (AML)
  5. Prestress/Post-Tensioning Strand Systems

Prestress/Post-Tensioning Strand Systems

Schwager Davis Incorporated

SDI 12.6-PC

Last edit date: 3/20/2024

GENERAL
Bar or Tendon Size Strand Diamter Ultimate (kips) Concrete Strength(psi) PJack (kips)
12 0.6" 703 3500 527

WEDGES
Wedges Length Material Wedge Parts Wedge Angle Wedge Inside Diameter
1.77" AISI 12L142 7°
1.77" AISI 11L172 7°

ANCHOR HEADS
Anchor Heads Size Material Authorization Date
7.06" O.D. x 5.2" shldr x 3" depth ASTM A536 Grade 80-55-06
Wedge hole angle:
Wedge hole diameter:
Strand hole diameter:

BEARING PLATES
Bearing Plates Size Material Authorization Date
11.50" O.D. x 5.5" I.D. x 3" depth ASTM A 536 Grade 80-55-06
Bearing hole diameter:
Spiral size and turns:

TRUMPETS
Trumpets Size Material Authorization Date
14" x 5 7/16" O.D. x 3 3/8" I.D. HDPE

DUCTS
Ducts Size Material Authorization Date
3" I.D.

SPIRAL
#4 Spiral @13" OD 6 turns @ 3" Pitch