Engineering library update - April 2025
Tekla Tedds engineering library update (April
2025 - version 27.01) can be downloaded and installed by going to Trimble
Downloads and clicking on the appropriate 
American Design
Product bulletin March 2025 (PBT-2503-1)
Snow loading (ASCE7) - Corrected a potentially un-conservative error affecting the calculation of parapets drift height as per ASCE 7-22. For more detailed information please refer to Product bulletin March 2025 (PBT-2503-1).
Other updates
| Composite beam design (AISC360) | |
|---|---|
| TEDDS-9265 | Enhance to include the ability to design for either combination '1.2 x D + 1.6 x L' or '1.4 x D' |
| TEDDS-8132 | Removed the 0.75 reduction factor for Ieff from the AISC 360-16/22 version of the calculation and added an option to exclude for earlier version of the code. |
|
RC 2D analysis & design (ACI318) RC beam analysis & design (ACI318) RC beam design (ACI318) |
|
|---|---|
| TEDDS-9342 | Corrected an undefined variable error when accessing the deflection dialog in the 2D member calculations. |
| TEDDS-9323 | Fixed summary table not showing the results for all spans on rerun of an existing calculation where no changes were made before finishing. |
| TEDDS-9319 | Renamed debug timer variables. |
| RC shear wall design (ACI318) | |
|---|---|
| TEDDS-7730 | Fixed undefined variable '_Eqn_sry_perm' error allowing correct production of y axis slenderness results. |
|
Steel 2D analysis & design (AISC360) Steel member analysis & design (AISC360) Steel member design (AISC360) |
|
|---|---|
| TEDDS-9342 | Corrected an undefined variable error when accessing the deflection dialog in the 2D member calculations. |
|
Wood 2D analysis & design (NDS) Wood member analysis & design (NDS) Wood member design (NDS) |
|
|---|---|
| TEDDS-9342 | Corrected an undefined variable error when accessing the deflection dialog in the 2D member calculations. |
| TEDDS-9445 | Fixed output showing incorrect adjusted modulus of elasticity in the output. |
Australian Design
Updates
|
RC 2D analysis & design (AS3600) RC beam analysis & design (AS3600) RC beam design (AS3600) |
|
|---|---|
| TEDDS-9342 | Corrected an undefined variable error when accessing the deflection dialog in the 2D member calculations. |
| TEDDS-9323 | Fixed summary table not showing the results for all spans on rerun of an existing calculation where no changes were made before finishing. |
| TEDDS-9319 | Renamed debug timer variables. |
|
Steel 2D analysis & design (AS4100) Steel member analysis & design (AS4100) Steel member design (AS4100) |
|
|---|---|
| TEDDS-9342 | Corrected an undefined variable error when accessing the deflection dialog in the 2D member calculations. |
British Design
Updates
| Reinforcement schedule (BS8666) | |
|---|---|
| TEDDS-9349 | Corrected error which was altering bar numbers when editing bars. |
| TEDDS-9353 | Corrected input update variable errors associated with adding new members and bars. |
Canadian Design
Product bulletin March 2025 (PBT-2503-2)
Steel section design (CSA-S16) - Corrected validation in UI to ensure moments and shear forces cannot be applied to angle sections, this issue is potentially unconservative allowing the design of angle sections in bending and shear, for more detailed information please refer to Product bulletin March 2025 (PBT-2503-2).
Other Updates
| Steel section design (CSA-S16) | |
|---|---|
| TEDDS-9132 | Corrected code references in the UI and the output. |
| TEDDS-9456 | Corrected calculation of lambda used in the classification of angle sections. |
| [TEDDS-9457 | Corrected calculation to ensure class 4 sections are reported as being beyond the scope of the calculation. |
Eurocode Design
Updates
|
RC 2D analysis & design (EN1992) RC beam analysis & design (EN1992) RC beam design (EN1992) |
|
|---|---|
| TEDDS-9342 | Corrected an undefined variable error when accessing the deflection dialog in the 2D member calculations. |
| TEDDS-9323 | Fixed summary table not showing the results for all spans on rerun of an existing calculation where no changes were made before finishing. |
| TEDDS-9319 | Renamed debug timer variables. |
| RC slab design (EN1992) | |
|---|---|
| TEDDS-8733 | Fixed undefined variable error, "_DebugOld". |
| Retaining wall analysis & design (EN1992/EN1996/EN1997) | |
|---|---|
| TEDDS-9336 | Calculation amended to ensure preview does not result in a divide by zero error for retaining walls where bearing pressure acts outside the base area. |
|
Steel 2D analysis & design (EN1993) Steel member analysis & design (EN1993) Steel member design (EN1993) |
|
|---|---|
| TEDDS-9342 | Corrected an undefined variable error when accessing the deflection dialog in the 2D member calculations. |
| TEDDS-9251 | Corrected expression used to calculate equivalent moment factor, CmLT.. |
| TEDDS-9322 | Corrected undefined variable error, "_Moment_y_{s#}", associated with opening old member design documents in newer versions of the calculation. |
|
Timber 2D analysis & design (EN1995) Timber member analysis & design (EN1995) Timber member design (EN1995) |
|
|---|---|
| TEDDS-9342 | Corrected an undefined variable error when accessing the deflection dialog in the 2D member calculations. |