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Prestress/Post-Tensioning Strand Systems
Schwager Davis Incorporated
SDI 12.6
Last edit date: 3/20/2024
GENERAL |
| Bar or Tendon Size |
Strand Diamter |
Ultimate (kips) |
Concrete Strength(psi) |
PJack (kips) |
| 12 |
0.6" |
703 |
4500/6500 |
527 |
WEDGES |
| Wedges Length |
Material |
Wedge Parts |
Wedge Angle |
Wedge Inside Diameter |
|---|
| 1-3/4" |
AISI 12L14 | 2 |
7° |
9/16" |
| 1-3/4" |
AISI 11L17 | 2 |
7° |
9/16" |
ANCHOR HEADS |
| Anchor Heads Size |
Material |
Authorization Date |
|---|
| 7.25"Ø x 3.375" |
A536 Gr. 80-55-06 | 11/25/2002 |
Wedge hole angle: Wedge hole diameter: Strand hole diameter: |
BEARING PLATES |
| Bearing Plates Size |
Material |
Authorization Date |
|---|
| 11.5"Ø x 3" |
A536 Gr. 80-55-06 | 11/25/2002 |
Bearing hole diameter: 5.375" Spiral size and turns: |
TRUMPETS |
| Trumpets Size |
Material |
Authorization Date |
|---|
| 14" x 5 7/16" |
HDPE | |
DUCTS |
| Ducts Size |
Material |
Authorization Date |
|---|
| 3.25" O.D. |
galvanized spiro | |
SPIRAL |
| VARIES depending on concrete strength: see approval letter |
