- Tendons are considered as an external load (and the balance loading is assumed to be included in the load factors).
- The reinforcement type (as defined in the design section or design strip segment) is considered (PT or RC).
- The stress levels in the structure are determined by the moment envelope for the rule set (reinforcement may be required on both faces).
- The design strip segment or design section property "Environment "is used to determine the exposure category of members as follows:
- Protected: X0, XC1
- Normal: XC2, XC3, XC4
- Corrosive, Very Corrosive: XD1, XD2, XS1, XS2, XS3
- Code Rules are applied as shown in the following table:
Table 1. Quasi-Permanent service rule mapping
Design System |
RC |
Bonded PT
|
Unbonded PT |
UK National Annex
|
|
|
|
All systems |
7.3
|
7.32 |
7.31 |
Generic National Annex
|
|
|
|
All systems |
7.3
|
7.32 |
7.3
|
Note: 1- for Unbonded PT members, 7.3 is only performed where
"crack width" design is requested.
Note: 2- for Bonded PT members, only the decompression design is applied for the appropriate exposure.