In the latest version of the software we added new features:
- Definition of the connection for tensile and shear forces independent of each other
- Bug fixing and small improvements
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The Greek language module has been updated to version 79.
In the latest version of the software we added new features:
- We added the possibility to define the geographical position within the Republic of San Marino. If the user geolocates the building within the territory of the Republic of San Marino, the software automatically calculates the actions acting on the building: wind, snow and seismic action.
- We added new connections to the archives: Borga Italia and Simpson Strong-Tie. Specifically, the new connections by Borga Italia and some new connections by Simpson Strong-Tie have been added.
- We added Pfeifer CLT panels to software archives
- We updated the CLT archives with the new Stora Enso data
- Improvement of the vibration checks of the floors: we added the possibility to take into account the transverse bending stiffness of the floor also for the calculation of its fundamental frequency f1. In the previous version, the transverse load-carrying effect was considered only in the calculation of the effective width.
- We added the Romanian standard. The National Annexes of Romania have been added
- Changes to the input data – values of the acting loads: it is now possible to use values of loads lower than the default ones proposed by the Eurocodes to better adapt to local standards
- Changes to the input data – width of framed wall elements: it is now possible to use studs and frame elements with a width of less than 40 mm to better adapt to customer needs
- Bug fixing and small improvements
The Spanish language module has been updated to version 80.
In the latest version of the software we have added the following new features:
- Improved license management
- Bug fixing and small improvements
In the latest version of the software we added new features:
- Fire protections: checks on the load-bearing function of structural members initially protected from exposure to fire can now be performed. Gypsum Plasterboard, Gypsum Plasterboard Type F, Gypsum Fibreboard and custom definitions can be used. In the first three cases, the software automatically calculates the time of start of charring tch, the failure time of protection tf (evaluated differently for vertical and horizontal elements), the time ta and the insulation coefficient k2. In the case of custom definition, the designer can manually enter the parameters in order to manage protection solutions not listed in the standard or defining specifications of a particular manufacturer. For all protected structural elements, the rules proposed in EN 1995-1-2 are used with all the cases proposed by the standard for the calculation of the charring depth dchar,n, the calculation of k0 and k2 and the calculation of the effective charring depth deff.
The joist floors and the framed walls with protections are calculated as assemblies with void cavities following the indications of Annex D of Eurocode EN 1995-1-2, which provides for different times of start of charring for the sides directly exposed to fire and for the sides facing the empty cavities.
- CLT panels by the Spanish manufacturer Egoin added: it is now possible to check the CLT structures made with Egoin panels
In the latest version of the software we added new features:
- Inclusion of LVL: both softwood and beech LVL are now available and they can be used as beams, columns, joist floors and solid wood floors. The databases include the products of the main European manufacturers: Metsa Wood (Kerto), Steico e Pollmeier (BauBuche e Fichte LVL).
- Improvement of the reactions in foundation export: inclusion of two new fields in the “actions.csv” file providing the name and the length of the element in each node. Inclusion of three new layers in the “geometry.dxf” file displaying the nodes numbers, the walls lines and the names of the elements in each node.
- Improvement of the databases translations: all the databases are now consistently translated and they support the transition of the software from Italian to English version and viceversa.
- Inclusion of Uso Fiume and Uso Trieste timber: softwood and chestnut Uso Fiume timber and softwood Uso Trieste timber are now available and they can be used in beam, column and joist elements according to their ETA specifications.
- Spreadsheet for the calculation of the interstorey drift sensitivity coefficient: the users can now download form their Personal area the spreadsheet for the calculation of the interstorey drift sensitivity coefficient for the assessment of the second-order effects.
- New welcome page: the software shows an interactive welcome page that will host constantly updated contents such as papers, events, blog posts, software updates and tutorial videos.
The check of CLT elements under fire conditions can be crucial in the design of a timber structure. Due to the layered structure of their cross-section, the calculation process is peculiar as pointed out in the examples below.
The charring depth of a CLT panel under fire conditions depends on the properties of the glue used in the panel assembly. The polyurethane glue (PUR), often used by manufacturers, is not resistant in case of high temperature meanwhile MUF glue (melamine-urea-formaldehyde) shows better performance.
This is why the new TimberTech Buildings additional module for the fire design of timber structures implements two calculation models to be applied according to the CLT properties certified by the manufacturer:
- Glue line integrity maintained: the charring rate is assumed to be constant through the whole cross-section. This method can also be used when the manufacturer’s certificates suggest a constant charring rate (higher than that of the wood) to take into account the lower performance of the glue in a simplified manner.
- Glue line integrity not maintained: the charring rate is not constant and depends on the panel stratigraphy. The CLT cross-section can be seen as a sequence of layers where each one acts as a protective layer for the following one. Therefore, the method for protected elements provided by EN 1995-1-2 can be applied to obtain a charring rate trend such as the one reported in the figure below where the k3 factor usually has a value of 2.
CLT design example: R60 with glue line integrity not maintained
- Cross-section: 120 mm (20-30-20-30-20)
- Glue: glue line integrity NOT maintained
- Fire exposure: 60 minutes on one side
- Unidimensional charring rate: beta0 = 0.65 mm/min
- Charring depth: dchar,0 = 53 mm. Layer 1 (constant charring rate), layer 2 (double charring rate in the first 25 mm, then constant charring rate), strato 3 (double charring rate up to the required 60′)
- Effective charring depth: def = dchar,0 + k0d0 = 60 mm
- Effective cross-section: 60 mm (20-30-10)
Bending check 101% (MEd = 11.36 kNm)
Shear check 14% (VEd = 7.81 kNm)
Download the TimberTech Buildings calculation report about this example
CLT design example: R60 with glue line integrity maintained
- Cross-section: 120 mm (20-30-20-30-20)
- Glue: glue line integrity NOT maintained
- Fire exposure: 60 minutes on one side
- Unidimensional charring rate: beta0 = 0.65 mm/min
- PCharring depth: dchar,0 = 39 mm. Constant charring rate through all layers
- Effective charring depth: def = dchar,0 + k0d0 = 46 mm
- Effective cross-section: 74 mm (20-30-20-4)
Bending check 55% (MEd = 11.36 kNm)
Shear check 12% (VEd = 7.81 kNm)
Download the TimberTech Buildings calculation report about this example
In the latest version of the software we added new features:
- Verification of the timber structural elements in fire conditions: it is now possible to perform the resistance checks in fire conditions of the unprotected structural timber elements.
The development of an update to include fire protection layers in the analysis and verification process is already in progress.
For further information on the fire design module please click here. - Improvement in the management of extended and polygonal walls: extended and polygonal walls can now support floor, roof and wall elements according to more complex configurations.
- Improvement of the formatting of the calculation report.
In the latest version of the software we have added the following new features:
- Inclusion of Simpson Strong-Tie connections: a selection of Simpson Strong-Tie connections with all the relevant strength and stiffness parameters is now available in TimberTech Buildings. The selection includes hold-downs, timber-to-timber shear and tensile plates, timber-to-concrete shear plates and timber-to-timber and timber-to-concrete angle brackets with the appropriate fasteners and anchors.
- Binderholz CLT update: two material are now available for Binderholz CLT: BBS 125 and BBS XL. The user can choose the appropriate material according to the panel type.
- Bug fixing and small improvements
