FAQs EN | Sommer Informatik GmbH

Which calculation standards are supported by WINISO®?

With WINISO®, it is possible to perform calculations in accordance with the following standards:

EN ISO 10077-2
EN 673
EN ISO 6946
ISO 15099

What materials are available in WINISO®?

WINISO® provides you with a wide range of material data and boundary conditions. The database can be customized to meet your specific needs.

Is it possible to calculate the Ucw value using WINISO®?

With WINISO®, you can calculate all the detailed values for the facade (U-values for profiles, Psi-values for glass edges, Psi-values for all-glass corners, Psi-values for mullion-to-door transitions, etc.), as well as the isotherm profiles of the connections. The values determined in this way are then summed by area and length for a Ucw calculation and applied to the total area of the facade. The latter is usually done using Excel or other tools.

How can the equivalence verification for the example shown be performed in accordance with DIN EN ISO 4108, Supplement 2?

The mathematical proof of equivalence is performed using the Psi-value and frsi-value calculations. The calculations are based on the standards DIN EN ISO 10077-2 in conjunction with DIN EN ISO 10211. The frsi value is calculated in accordance with DIN EN ISO 4108-2.

Can WINISO® model temperature distributions in glazing caused by solar radiation?

In WINISO®, you specify the absorption as “surface power” in W/m² on the surface of a material (boundary condition at the edge).

How can you enter products that are not stored in the sound database?

You can save your own configurations in the acoustic database and add acoustic values.

How can custom structures made of polycarbonate be entered?

The program allows users to import custom data for different component types. The spectral data can be easily imported into the program as data sets.

What is the difference between the Uw value and the U-value, and where is the U-value for glass defined? What role does the coating play in this?

Unlike the U-value, the UW-value takes the entire window into account. The UW-value is determined by several factors, with the coating having a significant influence on it.

Which part of the program can be used to calculate the lighting parameters of insulated glass?

WINSLT® calculates optical, radiative, and thermal performance characteristics of glazing in accordance with EN 673 and EN 410, as well as of glazing in combination with solar shading in accordance with EN ISO 52022-3.

Is it possible to calculate external slats?

You can use WINSLT® to calculate external slats. When creating the assembly, make sure to specify the correct directions for ventilation of the air space between the insulated glass and the external venetian blind. You can set these by right-clicking in the ventilated air layer and selecting “Change Ventilation Level.”

Do the values determined using WINSLT® meet the requirements of DIN 1279-5 (4.3.2.12. ... to be determined in accordance with EN 673; 4.3.2.13. ... to be determined in accordance with EN 410)?

The requirements of DIN EN 1279-5 are met in full, and the calculations in accordance with EN 673 and EN 410 have been certified/validated by ift Rosenheim. These calculations are based on values and spectral data declared by the manufacturers.

Which part of the program can be used to calculate the optical properties of insulated glass?

WINSLT® calculates optical, radiative, and thermal performance characteristics of glazing in accordance with EN 673 and EN 410, as well as of glazing in combination with solar shading in accordance with EN ISO 52022-3.

Can a company logo be added to the earnings report?

Yes, the header and footer of the printout can be customized. This also includes the option to add a logo.

How can I import the spectral data for a specific type of glazing?

Spectral data can be imported into WINSLT® using a sample Excel file. This file is already located in the WINSLT® installation directory.

Is the glass database in WINSLT® compatible with the international glass database IG(S)DB?

The “Optical Berkeley” add-on integrates access to spectral data from the IGSDB directly into the SommerGlobal calculation process.

The interface was developed as part of the EQWIN-P research project in collaboration with Fraunhofer ISE and is available as an add-on for the following modules:

WINSLT®
WINSLT® 15099
WINTHS

What standards and calculation methods does WINTHS use for verification?

WINTHS calculates the thermomechanical stresses in glass panes fully automatically based on the recognized French standard NF DTU 39 P3 and established European guidelines.

How accurately can complex shading scenarios be modeled?

Very precise. WINTHS simulates spectral solar radiation in accordance with VDI 3789 for any geographic location worldwide. The software accounts for shading caused by the building itself and external objects (e.g., neighboring buildings, roof overhangs, pilasters) as well as interior or exterior sunshade systems. This allows for the determination of critical, uneven temperature gradients at the edges of the glass, calculated to the hour, throughout the entire year.

Does the software also support modern, complex glass restorations?

Yes. WINTHS offers a comprehensive database of manufacturer spectral data and calculates single-, double-, and triple-pane insulated glass units. Coated glass (Low-E, solar control), highly absorbent glass, laminated safety glass (LSG), and gas fillings in the air space between the panes are all precisely incorporated into the thermal analysis.

What direct economic benefits does WINTHS offer during the planning phase?

The software prevents costly planning errors. Instead of prescribing thermally toughened glass (ESG/TVG) across the board—which is costly—WINTHS determines the actual stresses. You can immediately see where less expensive float glass is sufficient and at what point thermal tempering is technically mandatory. This optimizes material costs while also protecting against liability claims resulting from glass breakage after installation.

Can WINTHS be integrated into existing glass sizing workflows?

Yes, via a direct interface connection. WINTHS integrates seamlessly with the WINSLT® software (for determining the spectral-physical properties of glass and solar shading) and GLASGLOBAL® (for structural analysis in accordance with DIN 18008). Project data can be transferred directly, which minimizes the need for manual data entry and reduces the risk of errors.

General

What materials are available in GLASGLOBAL®?

GLASGLOBAL® provides you with a wide range of material data and boundary conditions. The database can be customized to meet your specific needs.

Can GLASGLOBAL® also be used to perform calculations for sunrooms or mullion-transom glazing?

Yes, this is possible with GLASGLOBAL®.

Are the printouts from GLASGLOBAL® verifiable?

The “expert printouts” for the GZT and the GZG, together with the “Verification” results printout, are verifiable.

What criteria are used for calculations in GLASGLOBAL®?

GLASGLOBAL® is software for the structural analysis of single-pane and insulated glass units. Based on DIN 18008 and the concept of partial safety factors, the software determines the risk of breakage and the deflection of glazing under loads from wind, snow, climate fluctuations, differences in elevation, and traffic loads. Optionally, the membrane stress effect can be taken into account for panes supported on all sides.

How are load assumptions for Switzerland handled?

Loads are entered into GLASGLOBAL according to SIA standards or manually. The “GLASGLOBAL® Snow Load Module Switzerland” add-on is required for this. If you do not yet have the “GLASGLOBAL® Snow Load Module Switzerland” add-on, please contact vertrieb@sommer-informatik.de

Is the GLASGLOBAL® software used for structural analysis or for preliminary structural design?

Appropriate certification is required to perform a verified structural analysis. If you have
this qualification, you can use GLASGLOBAL®
to perform a structural analysis.
Otherwise, the analysis performed with GLASGLOBAL® is a verifiable structural analysis that
contains all the information required for an inspection. If a
certified structural analysis of the glazing is required, you cannot do without a structural engineer.

GLASGLOBAL®18008

Is it possible to calculate a barrier clamped at the bottom that is subjected to a vertical load?

Yes, this is possible in the GLASGLOBAL® Standard module.
To do this, select vertical glazing in the geometry and set an installation angle of 90°. Now set the mounting to “clamped at the bottom.”

How is glazing supported on three sides calculated?

Glazing with three-sided support is calculated in the same way as glazing with two-sided support (in the Standard and Fall Protection modules).
If you analyze a glazing assembly in the Point Support module and select “Three-sided” as the support type, the FEM core calculates the utilization for the actual three-sided support (for single-pane glazing).

How is the partial safety factor γm calculated in the program, and can it be changed?

The partial safety factors are specified in DIN 18008, Part 1.

Can the Point Support module be used to perform calculations for dimensions smaller than 50 mm?

No, DIN 18008, Part 3, Section 5.3 only allows a radius of >= 25 mm in this case.

How is documentation of fall-protection glazing managed in the program?

Verification is performed in accordance with DIN 18008, Part 4.

When can the membrane tension be applied?

The membrane stress method is limited to linear support on all sides, surface loads, and rectangular plates. There is no distinction or restriction between horizontal and vertical directions.

What load is applied in the case of "glass installed in a lower-level structural element"?

In the calculations, the maximum snow load is assumed to be distributed across the entire glass pane.

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Frequently Asked Questions

General

GLASGLOBAL®18008