# Tekla Tedds Engineering Library (June 2021)

## UK and Asia

### Timber member design (EN1995)

Enhanced to allow built up sections to be wider than they are deep.

### Component calculations

Added a new folder to the Engineering Library for "Component calculations". A component calculation encapsulates a small engineering solution which can be easily reused by other calculations. They are typically used by calculations in the Tedds Engineering Library and can also be integrated in your own custom written calculations.

#### Component calculation: Steel section classification (EN1993)

Checks the section classification of carbon steel or stainless steel sections.

#### Component calculation: Steel section sketch

Creates a drawing of a Steel section profile which can then be used in the user interface or output of another calculation. Supports section types I, T, Channel, Hollow Circle, Hollow Rectangle, Angle, 2 Angles, 2 Angles (log leg), 2 Angles (short leg), Asymmetric I, Slimflor and Flats. The drawing can be customised to include dimensions and section properties as appropriate.

### Other Updates

#### Batch design

Enhanced to include examples for carbon steel and stainless steel for the "Steel section classification (EN1993)" calculation component.

#### Crane gantry girder design (EN1993)

[TEDDS-5738]^{1} - Fixed occasional incorrect placement of wheel loads when not all wheel loads are located on the beam.

#### Crane gantry girder design (EN1993)

RC pile cap design (EN1997)

RC pile cap design (ACI318)

Steel beam supporting hollowcore slab design (EN1993)

Steel beam torsion design (EN1993)

Steel masonry support design (EN1993)

Steel member fire resistance design (EN1993)

Updated to use version 2.x of the Steel section sketch component.

#### RC slab design (EN1992)

[TEDDS-5686]^{1} - Fixed undefined variable error when enabling the summary table option for one way slabs with one span

#### Retaining wall analysis & design (EN1992/EN1996/EN1997)

[TEDDS-5733]^{1} - Corrected the neutral axis depth calculation for the base of masonry retaining walls.

#### Steel member design (EN1993)

Fixed minor issues relating to the section sketch output to the document.

#### Timber 2D analysis & design (EN1995)

Timber member analysis & design (EN1995)

Timber member design (EN1995)

[TEDDS-581]^{1} - Added note to clarify design method for built-up sections.

[TEDDS-4703]^{1} - Added note to indicate calculation scope limitation for members that are wider than deep.

## USA

### Wood 2D analysis & design (NDS)

Wood member analysis & design (NDS)

Wood member design (NDS)

Enhanced to allow built up sections to be wider than they are deep.

### Component calculations

Added a new folder to the Engineering Library for "Component calculations". A component calculation encapsulates a small engineering solution which can be easily reused by other calculations. They are typically used by calculations in the Tedds Engineering Library and can also be integrated in your own custom written calculations.

#### Component calculation: Steel section sketch

Creates a drawing of a Steel section profile which can then be used in the user interface or output of another calculation. Supports section types I, T, Channel, Hollow Circle, Hollow Rectangle, Angle, 2 Angles, 2 Angles (log leg), 2 Angles (short leg), Asymmetric I, Slimflor and Flats. The drawing can be customised to include dimensions and section properties as appropriate.

### Product bulletin May 2021 (PBT-2105-1)

Column base plate design (AISC360) - Fixed a potentially un-conservative error affecting designs of tensions welds to ASD methodology. For more detailed information please refer to “Product bulletin May 2021 (PBT-2105-1)” in the Bulletins group of the Engineering Library Index.

### Other updates

#### Anchor bolt design (ACI318)

[TEDDS-4053]^{1} - Fixed an error placing 0.75 factor on shear capacity values under seismic loading for ACI 318-11 version and later.

#### Column base plate design (AISC360)

[TEDDS-5499]^{1} - Revised the calculation of A2 to ensure similar aspect ratio as the base plate.

[TEDDS-911]^{1} - Revised interface information notes to clarify limitations of ASD design method.

[TEDDS-929]^{1} - Fixed interface bug causing undefined variable, hlug, error.

[TEDDS-3021]^{1} - Fixed issue with incorrect check of bolt and section clash.

#### RC beam design (ACI318)

[TEDDS-5617]^{1} - Fixed the preview results not showing correctly when the beam is classified as beyond scope.

#### Seismic forces (ASCE7)

[TEDDS-5655]^{1} - Corrected undefined variable '_seismic_Tab' error.

[TEDDS-2952]^{1} - Added reference in interface for guidance on effective seismic weight

#### Wind loading (ASCE7)

[TEDDS-5403]^{1} - Fixed external pressure coefficients for roof zones for components and cladding in ASCE7-16

[TEDDS-5591]^{1} - Fixed pressure coefficients for arched roofs with a mean height of greater than 60ft.

[TEDDS-5601]^{1} - Fixed internal pressure coefficients not switching values correctly when switching between building types.

#### Wood 2D analysis & design (NDS)

Wood member analysis & design (NDS)

Wood member design (NDS)

[TEDDS-5714]^{1} - Revised the major axis effective length factor to use the member width instead of depth.

Fixed calculation of major axis effective length to be zero when not restrained but unbraced length is set to zero.

## Europe

### Timber member design (EN1995)

Enhanced to allow built up sections to be wider than they are deep.

### Component calculations

Added a new folder to the Engineering Library for "Component calculations". A component calculation encapsulates a small engineering solution which can be easily reused by other calculations. They are typically used by calculations in the Tedds Engineering Library and can also be integrated in your own custom written calculations.

#### Component calculation: Steel section classification (EN1993)

Checks the section classification of carbon steel or stainless steel sections.

#### Component calculation: Steel section sketch

Creates a drawing of a Steel section profile which can then be used in the user interface or output of another calculation. Supports section types I, T, Channel, Hollow Circle, Hollow Rectangle, Angle, 2 Angles, 2 Angles (log leg), 2 Angles (short leg), Asymmetric I, Slimflor and Flats. The drawing can be customised to include dimensions and section properties as appropriate.

### Other Updates

#### Batch design

Enhanced to include examples for carbon steel and stainless steel for the "Steel section classification (EN1993)" calculation component.

#### Crane gantry girder design (EN1993)

[TEDDS-5738]^{1} - Fixed occasional incorrect placement of wheel loads when not all wheel loads are located on the beam.

#### Crane gantry girder design (EN1993)

RC pile cap design (EN1997)

RC pile cap design (ACI318)

Steel beam supporting hollowcore slab design (EN1993)

Steel beam torsion design (EN1993)

Steel masonry support design (EN1993)

Steel member fire resistance design (EN1993)

Updated to use version 2.x of the Steel section sketch component.

#### RC slab design (EN1992)

[TEDDS-5686]^{1} - Fixed undefined variable error when enabling the summary table option for one way slabs with one span

#### Retaining wall analysis & design (EN1992/EN1996/EN1997)

[TEDDS-5733]^{1} - Corrected the neutral axis depth calculation for the base of masonry retaining walls.

#### Steel member design (EN1993)

Fixed minor issues relating to the section sketch output to the document.

#### Timber 2D analysis & design (EN1995)

Timber member analysis & design (EN1995)

Timber member design (EN1995)

[TEDDS-581]^{1} - Added note to clarify design method for built-up sections.

[TEDDS-4703]^{1} - Added note to indicate calculation scope limitation for members that are wider than deep.

## Australia

### Component calculations

#### Component calculation: Steel section sketch

## Canada

### Component calculations

#### Component calculation: Steel section sketch

### Footnotes

^{1} This number is an internal reference number and can be quoted to your local Support Department should further information on an item be required.