System Name The label used to identify a PT system. It usually describes the system, such as strand size and bonding.

Type Whether the system has unbonded or bonded strand.

A_ps The cross sectional area of one strand. Since strand is usually comprised of seven wires then the area is more complicated than πd²/4.

E_ps The Young’s Modulus of the strand at zero strain.

f_se The assumed effective stress in the strand after all losses. Using jacks overrides this assumption. See "About jacks" for further information.

f_py The yield stress of the strand.

f_pu The ultimate stress of the strand.

Duct Width The width or diameter of bonded tendon duct.

Max Strands Per Duct The maximum number of strands in a bonded tendon (use 1 for unbonded tendons).

Minimum Radius The minimum vertical radius that allows satisfactory placement of tendons in the field. You should consult with a local PT supplier. A value of zero disables radius checking for this PT system.

Jacking Stress / Anchor Friction / Wobble Friction / Angular Friction / Seating Distance / Long-Term Losses

Friction loss calculations use these properties. They have no effect unless tendon jacks are used. See "Jack properties" in Chapter 26, "Defining Tendons" for further information.