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Are there recordings of the key features and workflows? A quarterly recording of the current vyzn version: getting started, key features, updates and what's next. Currently: Q3 2026. → Which Project Phase Is Best for Using vyzn? vyzn adds value in all phases – from competition and preliminary studies through preliminary and detailed design to tendering and construction.… → Testing vyzn – Trial and Demo Access vyzn does not offer a self-service "free trial" button. Instead, a personal demo account is set up for you on a test environment that is… → What is a tenant in vyzn? A tenant is the organizational unit in vyzn that isolates data between different organizations. You can switch tenants in the user menu. → How do I log in to vyzn? vyzn runs in the browser at app.vyzn.tech — no installation needed. You receive access from your organization's administrator or from vyzn support. → How do I switch tenants in vyzn? If you have access to multiple tenants, you switch them via the user menu in the top right → "Switch tenant". → How many users can I invite to a project? The number of users per project is unlimited. → How do we work as a team in vyzn? Your team works in a shared company workspace (tenant) with the same data. Users and roles are set up for you by the vyzn team – with full access… → Can I use vyzn without a 3D model? Yes, you can use vyzn flexibly, even without a 3D model. Areas and quantities can be entered via Excel/CSV import – a sample template is available… → How do I calculate my first 3D model (IFC) in vyzn? In vyzn, you calculate your first 3D model in three steps: upload, integrate, calculate. You upload your IFC file in the "Models" area, integrate… → How do I reach the vyzn support team? You can reach our support team at any time by email at support@vyzn.tech or directly from within vyzn via the support form. Your request is… → Can I use vyzn for new buildings and existing buildings? Yes. During integration you choose whether the project is a new build or a conversion. All vyzn applications work for both project types. →

What is a project in vyzn? A project is the top-level container in vyzn that groups related buildings. → What is a building in vyzn? A building is a structure within a project. It contains one or more variants. → What is a variant in vyzn? A variant is a planning state of a building with its own models, assignments, zones, and calculations. Multiple variants of the same building can… → How are project, building, and variant related in vyzn? In vyzn, the project is the top-level container that groups related buildings. A building contains one or more variants — each a planning state… → How does vyzn calculate the project-specific thresholds? The thresholds are project-specific, not fixed table values. Per zone, the formula is: base value B × zone area A ÷ EBF. The rows are summed to… → What level of detail should my models have? Less is more: simple models speed up upload, processing and variant studies. Ideal is a lean model that still contains all relevant components –… → How can I isolate or hide individual elements in the viewer? Right-click an element in the viewer to run actions such as "Isolate". While holding the Ctrl key, you can also draw a selection rectangle to… → How do I create multiple variants that I can compare? In vyzn, variants are technically versions of a model: you create them via the «+» icon, choosing between «Variante erstellen» (create variant,… → How long does it take to upload a model? Uploading a model typically takes 3–9 minutes. The exact duration depends on the size and complexity of your model. The process is being… → Can I import zones and rooms from IFC (IfcSpace/IfcZone)? Yes – vyzn imports rooms from IFC (IfcSpace) directly during import, including name, storey, gross floor area and volume. You can see them in the… → Can I select local climate data or weather stations, and which locations are available? Yes — when creating or editing a building, you select the appropriate climate station in the "Weather station" field. For Swiss locations, the… → How do I update my model with the Replay function? The Replay function reuses the settings you have already made when you re-integrate a model, instead of starting from scratch. Open "Re-integrate… → How do I manage multiple variants without losing component and material assignments? In vyzn, each variant of a model carries its own component and material assignments. To make sure nothing gets lost, duplicate variants instead of… → What requirements should my model meet? Ideally, you provide an architectural design model as an IFC file (IFC 2x3 or IFC 4) containing the most important building elements such as… → How do I handle IfcBuildingElementProxy elements? IfcBuildingElementProxy elements are not lost during IFC import, but by default they end up in the catch-all category "Building element proxy" or… → Do I have to start from scratch every time I have a new model? No, you do not have to start over. In vyzn you plan iteratively across all phases: work you have already done, such as component assignments,… → How do I manage zones in vyzn? You manage zones centrally in the zone management area: this is where you create, edit and delete zones and assign elements to them via… → What kind of 3D models can I use? You can use 3D models in the IFC 2x3 or IFC 4x format (regardless of the CAD tool, e.g. ArchiCAD, Revit, SketchUp, Vectorworks or Rhino). You can… → Are there modeling guidelines or naming conventions I need to follow for the IFC export? No, vyzn does not impose a binding, documented modeling or naming guideline – the IFC import is deliberately tolerant. However, the cleaner the… → Can I combine multiple models (architecture, HVAC, structural)? Yes, you can keep several IFC models per building, for example architecture, structural and HVAC. The uploads coexist and a new model does not… → What should I look out for when exporting a model from CAD? Export your model with the unit of measure set to "meter" and without IfcBuildingElementProxy elements. Disable the option "Split multi-layer… →

IFC Versions and Recommended Export Settings vyzn imports IFC files schema-agnostically – you simply upload your file without selecting an IFC version. In practice, IFC4 models are used. For… → What is a zone in vyzn? A zone is a spatial unit of a variant with area and classifications (e.g., EBF, usage, Minergie-ECO), managed in zone management. Zones determine… → What is a component or product in vyzn? A component (product) is an entry in the catalog — a component (single material), an assembly (multi-layer build-up), or a system. Its attributes… → What is DMP (Deep Model Processing)? DMP (Deep Model Processing) is vyzn's AI-based in-depth analysis of your IFC model during integration. It automatically derives reference areas… → What is the catalog in vyzn? The catalog is a collection of components organized in categories with their attributes. Catalogs are the data source for all assignments in vyzn. → What is a model element in vyzn? A model element is a building element imported from the IFC model (e.g., wall, slab, window). A component from the catalog is assigned to it; only… → What is eBKP-H? eBKP-H (Baukostenplan Hochbau, SN 506 511) is the Swiss cost classification for buildings by elements (e.g., C Construction, D Services, E… → What is the SNBS? SNBS (Standard Nachhaltiges Bauen Schweiz) is a comprehensive Swiss sustainability standard covering society, economy, and environment. In vyzn,… → What is IFC? IFC (Industry Foundation Classes) is the open, vendor-neutral file format for exchanging building models (BIM) between software applications. vyzn… → What product types does the vyzn catalog contain and what statuses exist? The catalog contains five product types: components, materials, reference materials, building services, and other resources. Each product has one… → What material properties does the summer heat protection need? For the simulation, materials in the catalog must have the properties "Heat capacity", "Thermal conductivity", and "Density" — they determine the… → What is the difference between "Material Costs" and "Quantity Takeoff"? "Material Costs" calculates purely area-based: per model element area × "Price in CHF" of the assigned component, summed to the "Component Costs"… → Which data sources does vyzn use, and how often are they updated? vyzn combines several verified sources: KBOB reference materials (in multiple versions), Ökobaudat, materialsdb and generic vyzn materials. Our… → Can I choose between different KBOB versions, and which one is used? Yes and no – by design: we release every new KBOB version in vyzn and recommend the latest. Older versions are never removed, so the data of your… → Can I create and edit my own building components and layers in vyzn? Yes. You create new components in your own product catalogue and assemble their build-up freely from individual layers – including attributes such… → Are KBOB reference materials included in vyzn? Yes, the official KBOB reference materials are included in vyzn and are always kept up to date. → Why do CO2 emissions differ between similar concrete types, and are the values comparable? The CO2 values in vyzn come directly from the official KBOB life cycle assessment dataset and are not estimated. Differences between similar… → How do I group elements by "Type" instead of "Name"? In the configuration screen you can freely choose which attribute is used for grouping – for example "Type" or "Type name" instead of "Name". For… → Why is a component from the vyzn catalog read-only, and how can I still adapt it? vyzn standard templates are read-only by design so that they remain consistent across projects. To adapt a component anyway, create a copy, edit… → Do I need to link all elements to components? No, you do not need to link every element to a component. Deliberately link only the elements that should be included in your analyses (e.g. a… → How do I link materials to KBOB reference materials? Open your material in the catalogue in edit mode and click "Link to a reference material" on the relevant attribute group. Select the matching… → Can steel profiles be created as separate components, or do they have to be integrated into an overall assembly? Both options are possible: you can create steel profiles as separate components or integrate them into an overall assembly. What matters is how… → How are openings (windows/doors) recognized? vyzn recognizes windows and doors automatically from your IFC model based on their IFC type: IfcWindow is identified as a window, IfcDoor as a… → How can I import existing materials and building components into vyzn? You can import materials into vyzn directly from Excel, the Lesosai catalogue (.ldl) or the Archicad material catalogue (.xlsx or .txt). Entire… → How do I create a new building component? You create your own building components in the component catalog: open Catalog → Components, select the desired catalog or folder and add a new… → Can I store my own material data? Yes. As a customer, you can also import and store your own material data in vyzn. It is then available to you in addition to the material data… → How are columns and beams captured in vyzn? Columns and beams are captured automatically during IFC import: vyzn recognizes the IFC classes IfcColumn and IfcBeam (including StandardCase… → Are components assigned to 3D model elements automatically? Yes, to a large extent: when you import your IFC model or create a version, the 3D elements are automatically grouped according to SIA 2032, and… → How do I link model elements to building components? Linking is a guided process: once your IFC model has been processed, open the "Model elements" page for the variant. The assignment happens in… → Can I store project-specific references such as EPDs and compare multiple datasets per material? Partially: you can create your own reference materials and link them to your materials per attribute group, and EPD documents can be uploaded as… → Can I automatically link model elements to building components? Yes, vyzn automatically links your model elements to building components during IFC import: they are grouped according to SIA 2032 A.2.2, and each… → Can I use EPDs (Environmental Product Declarations) in vyzn? Yes, you can use EPDs in vyzn. vyzn allows you to add your own materials, which also lets you bring in values from EPDs. Correctly interpreting,… → How do I define cross-sections and percentage values correctly? You define the cross-section and percentage values in the catalogue directly on the component: open the component in edit mode and click… → How does vyzn handle complex geometries (freeform, curtain walls, stairs), and where are the limits? vyzn does not evaluate your IFC by re-meshing the raw geometry; it uses the quantities stored in the model (Qto or VYZN property sets). Curtain… → What model size is recommended and how does it affect upload and software performance? There is no fixed recommended model size in vyzn, but there is a technical upper limit: in the standard environment, the maximum file size per… → How do I model hybrid constructions such as timber-concrete composites or ventilated facades? You model hybrid constructions via the component build-up in the cross-section matrix: add stacked layers with "Add layer" and split inhomogeneous… → How do I create materials in the catalog? You create your own materials in the catalog: under Katalog → Materialien, open the desired catalog or folder and select «Produkt erfassen»… → What data does the vyzn material catalogue contain? The vyzn material catalogue contains standard materials and components with all the information required for the respective analyses. This… →

Norm and Method Configurations in vyzn vyzn is designed for the Swiss context (KBOB, SIA 380/1, eBKP-H). There is no country switcher (e.g. to Germany). Within the Swiss framework,… → What is SIA 380/1? SIA 380/1 "Heating demand" is the Swiss standard that defines the calculation of heating demand and the requirements for the thermal building… → What is KBOB and what are KBOB life cycle data? KBOB life cycle data for the building sector is the Swiss data collection with environmental indicators for building materials, building services,… → What is Minergie and Minergie-ECO? Minergie and Minergie-ECO are Swiss building standards for energy-efficient buildings; Minergie-ECO adds requirements for health and building… → What is the EBF (Energy Reference Area)? The EBF (Energiebezugsfläche / Energy Reference Area) per SIA 380/1 is the sum of heated or air-conditioned floor areas. In vyzn, it is defined… → What is GHG (Greenhouse Gas Emissions)? GHG stands for greenhouse gas emissions, expressed in kg CO₂ equivalent (kg CO₂-eq). It is the measure of the global warming potential over the… → What is Gray Energy? Gray energy is the non-renewable primary energy expended for manufacturing, transport, replacement, and disposal of components. The unit in vyzn… → What is SIA 180? SIA 180 is the Swiss standard for thermal protection, moisture protection, and indoor climate in buildings. It is the basis for the summer heat… → What are UBP (Environmental Impact Points)? UBP (Umweltbelastungspunkte / Environmental Impact Points) are based on the Swiss ecological scarcity method. They aggregate various environmental… → What is biogenic carbon? Biogenic carbon is the carbon stored in biomass (e.g., wood), expressed in kg C. It indicates how much carbon is bound in the built-in materials. → In what formats can I export the LCA report? The LCA results can be downloaded as a PDF report per SIA, as a CSV per GHG Protocol, and as a CSV per the Minergie Net Zero standard. → What four environmental indicators does the LCA in vyzn calculate? The LCA in vyzn calculates four environmental indicators at once, each per m² EBF per year: greenhouse gas emissions (GHG) in kg CO₂-eq, gray… → What inputs do I need for an LCA calculation in vyzn? For an LCA calculation, you need an IFC model with quantities, component assignments from the catalog (providing KBOB data), and at least one zone… → What do the thresholds GW1 and GW2 mean in Minergie-ECO? Minergie-ECO checks gray energy and greenhouse gas emissions of construction against two project-specific thresholds: GW2 is the maximum allowable… → What verification types does the Energy Efficiency app support? On the Energy Efficiency page, you select one of the common Swiss verification types: SIA 380/1, MINERGIE-P, MINERGIE-A, or MINERGIE-ECO. The… → Why does vyzn report the LCA "per year" and how is amortization applied? vyzn spreads each component's environmental impact over its service life: a metric "per m² per year" equals the component's total impact ÷… → How do I improve a non-compliant SIA 380/1 verification? You typically improve a non-compliant heating demand through better U-values of envelope components, reduced thermal bridges, or a more compact… → How does the summer heat protection calculation work? The app orders a thermal simulation per SIA 180; it is executed externally and takes up to 5 business days. It then shows metrics such as… → Does the LCA in vyzn include operational energy? No. The LCA app assesses per SIA 2032 the "construction scope", i.e., the embodied environmental impact: manufacturing (modules A1-A3),… → How does the Quantity Takeoff calculate costs from quantities? The app automatically sums model quantities per eBKP-H position; additional positions (e.g., foundation) you enter manually. Per position, you… → What inputs do I need for the energy efficiency calculation (SIA 380/1)? For the heating demand calculation per SIA 380/1, you need: weather station and altitude in the building details, zones with usage and at least… → How does vyzn handle renovations and existing buildings (existing components, demolition, replacement)? vyzn models renovations on three levels: mark the variant as «Umbau» (conversion), tag components as existing, and mark individual material layers… → How do I calculate summer thermal protection in vyzn? vyzn calculates summer thermal protection according to SIA 180 – largely automated. You classify your zones, provide the thermal material… → How do I calculate energy efficiency in vyzn? You calculate energy efficiency per variant in the "Energy efficiency" area – a SIA 380/1 verification computed from your model. Choose the… → How are the limit values for PV systems calculated? The limit values for PV systems are calculated according to the ECO/SIA standard. The calculation is based on the average value in kWp per m² of… → How should the «railing» element be treated in the life cycle assessment? Railings are generally not relevant for the life cycle assessment. You can either delete them or simply leave them unlinked to any building component. → Can I compare variants graphically? Yes, you can compare variants graphically in vyzn. Use the comparison overview to view your variants side by side. → How do I calculate the area and quantity evaluation in vyzn? vyzn calculates the areas automatically in the "Area and Quantity Evaluation" card (currently BETA) on the model/version page: as soon as you have… → How does vyzn determine areas from the IFC model, and which area terms are used? Deep Model Processing does not geometrically recalculate areas; instead, vyzn adopts the area and volume values stored on the rooms in your IFC… → How do I calculate the life cycle assessment (LCA) in vyzn? You calculate the life cycle assessment per variant directly from your model on the "Life Cycle Assessment" page. Prerequisites are a zone with an… → Can I upload only partial models and still get valid results? Yes — partial models are a completely normal workflow in vyzn: you can manage several models and variants side by side for one building. Results… → How are costs calculated in vyzn and can I import my own benchmarks? vyzn offers two ways to work with costs: material costs are calculated automatically from the prices stored in your catalog products, and in the… → How does vyzn calculate areas and lengths? vyzn does not invent geometry: areas and lengths are read directly from the standardized IFC base quantities of your imported BIM model. These are… → How is biogenic carbon calculated? vyzn reports biogenic carbon as a dedicated indicator – transparently and separately from greenhouse gas emissions. The calculation is based on… → How do I calculate material costs in vyzn? Open the "Material costs" page for the desired model version. vyzn matches each component to the corresponding product in your catalog by its name… → How are thermal bridges and shading approximated if the model does not explicitly include them? vyzn calculates according to SIA 380/1 using only the data stored in the model and does not automatically approximate thermal bridges or shading… → What accuracy can I expect in early phases and how do I communicate uncertainties? In early phases (preliminary study/competition), vyzn calculates primarily on the basis of reference values via the SIA 2032 preliminary project;… → How are life cycle stages (A1–A5, B, C, D) represented in vyzn? vyzn calculates the embodied life cycle assessment based on the KBOB 2022 dataset and represents the life cycle stages not as individual EN 15978… →

Are vyzn results accepted for certifications? vyzn provides the calculations and verification documents for common Swiss certifications – from the SIA 380/1 system verification (Minergie… → Where do I assign the eBKP-H classification to a component for the SIA 2032 report? You assign the eBKP-H classification via "Edit component" → "Costs". There you will find the field for eBKP-H. Once the eBKP-H is set, the… → Can I transfer changes back into my CAD? Yes. You export an enriched IFC from vyzn and re-import it into your CAD – bringing the decisions you made in vyzn back into your planning… → Can I use vyzn for compliance reports and certifications (Minergie, SNBS, DGNB)? Yes, vyzn is built for compliance work within the Swiss framework: you create the SIA 380/1 energy system compliance report for Minergie-P,… → How do I export data as CSV? Yes, you can download your data directly as CSV in several places. The export always sits where the data is created: in the data table of your… → How do I export results to create my own graphics and reports? You can export the underlying data from several result areas in vyzn – as Excel, CSV, PDF, XML or JSON – and continue working with it in Excel,… → Which standards does vyzn support (SIA 2032, 380/1, 180, KBOB)? vyzn covers the key Swiss standards across the entire energy and sustainability workflow – from SIA 380/1 and SIA 180 through SIA 2032 and KBOB… →

What does "The calculation is outdated" mean and how do I recalculate? The note on the button means that the model, assignments, or zones have changed since the last calculation. Click "Recalculate" on the respective… → How do I report a bug to vyzn? Write to support@vyzn.tech describing: what you wanted to do, what happened instead (exact wording of the message), the affected project,… → What does the "Delayed" tag on an uploaded model mean? "Delayed" means our team is still checking your upload – you did nothing wrong and don't need to do anything. The model is usually fully processed… → Why are elements not being imported? In most cases the issue lies with the IFC model, not with vyzn. The most common causes are unsupported element types, an incorrect IFC class… → Why are certain building elements missing after the IFC import, and how do I find the cause? This is often intentional: vyzn primarily imports the IFC types relevant for analysis, and elements such as furniture or open spaces are… → Why can't I calculate a life cycle assessment (LCA) in vyzn? You start the life cycle assessment directly in the variant via "Calculate now" or "Recalculate" – before starting, vyzn checks the prerequisites.… → Why does my model appear "zoomed far out" when opening, and how do I handle coordination points? If your model looks tiny and far away when opened, the cause is almost always large coordinate offsets in the IFC: survey or coordination points… → Why does the upload fail and where can I find logs for support? If the upload stops at a certain percentage or ends with an error message, this is usually caused by very complex elements or by faulty or… → Why is my project loading very slowly? A slow project load usually has one of three causes: the 3D model being prepared for the viewer, a very large IFC model, or evaluations being… →

Backups and recovery in vyzn Yes, vyzn creates daily automatic backups via Azure. Data can be restored to a previous point in time using point-in-time restore. → Will you be notified in case of a security incident? Yes. In the event of a reportable security incident, you will be notified in accordance with GDPR (Art. 33/34) and the revised Swiss Data… → How vyzn uses AI and machine learning Core calculations in vyzn are deterministic and standards-based. Machine learning is only used supplementarily for attribute suggestions, without… → Data Storage, Encryption and Certifications vyzn runs on Microsoft Azure in the European region. Your data is protected both in transit (HTTPS/TLS) and at rest (Azure storage encryption).… → How does vyzn handle personal data, and is there a DPA? The data controller is vyzn AG, Seilergraben 49, 8001 Zurich. We process data under Swiss data protection law and – where applicable – the EU… → Can I give an external auditor access to the model without granting full project access? Yes. Through our access management (Auth0), we can set up read-only access to the project for an external auditor. The auditor can see all data… → How long are projects stored and can I have data deleted? Your projects remain stored for as long as your contract with vyzn is active – there is no automatic deletion period during the contract term.… →