An essential component for the safe and reliable realization of your building project is the statics of building elements. Various factors have to be taken into account. Building elements have to be dimensioned according to the external conditions and examined with regard to their individually required stability, load size and the type of fastening.

For the pre-dimensioning of the components, we give you here some hints for the determination of the load sizes.

If you have any further questions regarding your individual construction project, please do not hesitate to contact us.

We will gladly advise you

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Wind loads

According to the current DIN 1055-4 of March 2005, the wind loads for buildings are to be determined on the basis of the wind zones in conjunction with the building height, whereby different suction and pressure zones are to be distinguished in the area.

A design aid for determining the wind loads for wall and roof components can be found in our download area under the heading "Selection aids".

Snow loads

Due to the new version of DIN 1055-5 from July 2005, the snow loads for buildings are determined on the basis of the snow zones in connection with the terrain height. For a correct allocation of the object location, the current list of the German Institute for Building Technology must be taken into account in any case.

In contrast to earlier load approaches, an unusual load combination has been added, especially in the northern German lowlands. In addition, snow accumulations on rising structural members and roof overhangs must also be taken into account for the exact design, but these are not determined as part of the preliminary design.

A design aid for determining snow loads for roof components can be found in our download area under the heading "Selection aids".

Thermal load

Due to solar radiation and the resulting temperature difference between irradiated and non-irradiated face sheets, sandwich panels can deform towards the warm side. The resulting constraining forces and wrinkling stresses are noted in the support width tables with the division into color groups.

Illustrations courtesy of Pöter & Möller GmbH

In the case of the single span girder, the temperature deformations occur without restraint - that is, without internal cutting forces and bearing forces.

Temperature curvature
κ = αt Δ Θ / d

Bending radius
R = 1 / κ = αt d / Δ Θ

Deformation in the center of the field
f = αt Δ Θ / d * L2 / 8

For plane sandwich elements, the deformations at the single span beam are independent of the thickness of the face sheets.

The elastic restraint forces increase with the element stiffness (thickness of the element and the cover shells). As the element widths decrease, the restraint forces increase.

Color shade, color group and brightness value in relation to the support width table PUR sandwich elements

RALShadeColor groupBrightness valueRALShadeColor groupBrightness value
1000green beigeII726008brown greenIII16
1001beigeII686010grass greenIII37
1002sand yellowII686011reseda greenII43
1006corn yellowII636018yellow greenII50
1007chrome yellowII576019white greenI76
1013pearl whiteI826020chromium oxide greenIII23
1015light ivoryI817001silver grayII52
1016sulfur yellowI787002olive grayII44
1018zinc yellowI807013brown grayIII27
1020olive yellowII537015slate grayIII28
1024ochre yellowII577016anthracite grayIII21
2000yellow orangeII517035light grayI75
2001red orangeII407032pebble grayII67
2002blood orangeIII388004copper brownIII33
2003pastel orangeII558007fawnIII27
2004pure orangeII438011walnutIII22
3000fire redIII318014sepia brownIII19
5002ultramain blueIII208016mahogany brownIII18
5007brilliant blueIII338023orange brownII40
5009azureIII288025pale brownIII34
5010gentian blueIII229001cream whiteI84
5012light blueII469002gray whiteI81
6002deciduous greenIII299006aluminum whiteII66
6005moss greenIII219010pure whiteI90


The correct verification of the removal of the fastening forces is carried out by the new load assumptions and is becoming increasingly important due to the trend towards concealed fastenings. In the following, we would like to present some special features of the different fastening types.

For correct planning and execution of the fastening, we refer to the installation guidelines of the International Federation for Lightweight Metal Construction (IFBS) as well as to the specifications of the fastener manufacturers and the building inspectorate approvals Z-14.1-4 and Z-14.4-407.

If you have any further questions regarding the fasteners of our construction elements, please do not hesitate to contact us.

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Trapezoidal and cassette profiles

Cassette profiles are generally used as wall structures, spanning horizontally from support to support. In this way, they form the inner load-bearing shell of the system and replace the otherwise customary transom construction. The outer wall shells, e.g. made of trapezoidal profiles, can be optimally fastened to the horizontal webs created in this way.

IFBS installation instructions

Cassette wall with horizontal outer shell:

Alternative assembly of the cassette profiles

*) according to thermal insulation certificate

Sandwich elements - visual fixation

The classic joint for sandwich wall elements with visual fixation is characterized by the robust design and the choice of high quality sealing tapes.

Sandwich elements - concealed fixation

The narrow joint characterizes the high-quality appearance of SIP components with concealed fixation. Due to the different variants, the use is possible almost everywhere from static and constructional points of view.

1-fold screw connection (standard)

2-fold screw connection

2-fold screw connection with load distribution plate (LVP)

Roof elements

The joint geometry enables particularly easy and quick installation. The additional sealing tape in the overlap provides double security.

Cold store elements

The individual joint structure of our cold store elements meets the high demands placed on this material. The different joint geometries ensure high impermeability for all available material thicknesses.