Press release 4 November 2015
Electronic toolbox for timber construction
professionals: Stora Enso launches its new design
software CLTengineer
Free online tool supports planning and static design of wooden construction projects with
Cross Laminated Timber (CLT)
Vienna, 4 November 2015: For years now Stora Enso's CLT has been used in projects of
outstanding quality and thereby established itself as a sustainable building material of the
future. In order for architects and structural engineers as well as carpenters to get the most
out of this innovative material Stora Enso now offers CLTengineer the free, platformindependent online tool that lets you create perfect designs for ceilings, roofs, supports,
supporting beams, lintels, bearings, continuous beams and CLT panels. The latest findings
in materials research as well as extensive investigations into the load bearing behaviour of
CLT make CLTengineer an indispensable planning tool for timber construction technicians.
Photo: © Stora Enso
CLTengineer replaces a previous tool called "Bemessung CLT" and offers extended
functionalities
Stora Enso has offered a design guide for CLT for some time with its "Bemessung CLT" software,
which until now has been intensively used by engineers for a wide range of projects. From now on
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users can perform the same calculations in CLTengineer; all existing Bemessung CLT modules
have been incorporated into the new tool:
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Design of CLT panels with loads acting perpendicularly to the horizontal plane (ceilings and
roofs)
Ribbed ceilings
CLT supports
CLT wall panels (horizontal and vertical loads in the CLT plane)
Lintels (above windows and doors)
Wall-like supporting beams
Bearing design
Building reinforcement
In CLTengineer these modules have been extended, however, to include national annexes to the
Eurocode standards as well as new functionalities. In the ribbed ceiling module for example it is now
also possible to calculate hollow box ceilings. For CLT supports loads can be considered both as
acting along the horizontal plane or perpendicularly to it. The CLT wall panel module has been
completely restructured and is based on a method of approximation developed in cooperation with
the Holzbau Forschungs GmbH based at the Technical University of Graz. As a result it is now
possible to consider openings in CLT wall panels, such as doors and windows, which have a
significant influence on wall stiffness. Thanks to the integration of the CLT wall panel module into
the building reinforcement module it is now also possible to transfer the calculated wall stiffness
values directly into the building reinforcement calculations.
Platform independence, new modules and ongoing expansion
In addition to the previous version's functionalities CLTengineer also offers a number of new
modules in line with current timber construction requirements:
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Wooden continuous beams (rectangular cross section)
Wooden supports (rectangular cross section)
Continuous beams made of steel
Steel supports
Wood / concrete composites for concrete + CLT, concrete + wooden rib for concrete + CLT
+ rib
2-axis cantilevered CLT plates (flat roof on a corner of the building)
CLT cross-section values
The CLTengineer software scores highly not just thanks to its functionalities but also with its
attractive design and user-friendliness. The results of all calculations can be represented in a short
or long form for example and if necessary also be downloaded as a PDF file and printed.
CLTengineer was created as an online tool to ensure that it will work on almost all available
devices, no matter whether on a desktop PC, laptop, smartphone or tablet. Users can provide
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valuable feedback via the built-in feedback feature, which is then incorporated into the software's
further development.
We already know which extended functionalities will come next for CLTengineer. Planned are
modules for designing connecting devices, structural physics and a design function to suit Swiss
standards (SIA). At the same time CLTengineer is continually being improved and kept up-to-date
by Stora Enso's R&D department.
"As a leading manufacturer and innovator in the CLT field we stay in close contact with architects,
structural engineers and timber construction technicians and we know exactly what they need when
creating static designs in their daily work. With the new CLTengineer software we provide them with
an important tool for timber construction that they can put to good use in a wide range of projects,"
explains Herbert Jöbstl, SVP of Stora Enso Wood Products GmbH in Central Europe.
Editor's note
The CLTengineer design software is available to all interested timber construction technicians at:
https://engineer.clt.info as well as on the www.clt.info homepage.
It is free to use, all you have to do is register and Stora Enso will then activate it for you.
About CLT
CLT (Cross Laminated Timber) is a solid wood construction product which is made of at least three
layers of single-ply boards, glued together transversely, and is currently produced in a size of up to
2.95 x 16 m. CLT solid wood panels consist of several layers and are available in different panel
thicknesses, depending on the static requirements. The lamination is carried out using
environmentally-friendly adhesive. CLT offers almost unlimited possibilities regarding design
concept, style and architecture and is completely compatible with other construction materials. CLT
is suitable for interior and exterior walls, as well as floors and roofs. The finished tailored CLT
panels are delivered directly to the construction site, where they are then fitted by a construction
company. With an annual capacity of 140,000 cubic metres, Stora Enso is the world's largest
producer of CLT.
www.clt.info
About Stora Enso Wood Products
Stora Enso’s Wood Products division provides versatile wood-based solutions for building and
housing. Our product range covers all areas of urban construction including massive wood elements
and housing modules, wood components and pellets. We offer a variety of sawn timber goods. Our
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customers are mainly construction and joinery companies, merchandisers and retailers. Wood
Products operates globally and has more than 20 production units in Europe.
www.storaenso.com
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