Material Mapping with the inventory on the left and the library on the right
Page layout
The page is split into two panels that work together:
The Auto Mapping button in the top-left runs an automated pass across the whole inventory — see Auto mapping at the bottom of this page.
The header strip also shows two live numbers:
- % MAPPED — share of inventory items currently linked to a material.
- kgCO₂/m²/year — current intensity based on what is already mapped.
The intensity unit (and the reference area it is divided by) is calculation-specific — it follows the framework selected for the project. See National compliance for the rules per country.
Building Component Inventory
Group by material or by type
Use the Material / Type toggle at the top of the inventory to change how items are grouped.- Material — types are bundled by the material they share (for example, all Cast-in-place reinforced concrete types in one group). Map once at the group level and every type inside inherits the mapping.
- Type — every type is listed individually. Useful when you want to map types one by one or inspect a specific type’s properties.
A material group expanded to show the individual types beneath it
Inventory card information
Each inventory row carries one or more badges and chips that tell you something at a glance:
An Unknown item — geometry came through with no material assigned in the authoring tool
Search, sort, and filter
The toolbar above the inventory has four ways to narrow the list:- Search inventory — free-text search across item names.
- Sort — order the list by Name or Amount.
- Filter — combine filters across Models, Mappings, States, DataSources, and ClassificationCodes.
- Select — enter selection mode to act on multiple rows at once.
Sort menu — Name or Amount
Filter menu — combine model, mapping, state, datasource, and classification filters
Item properties
Click an item’s name (or its expand caret) to open the Item properties modal. This is where you set the data the calculation needs — lifetime, classification, and the unit that the mapped material is measured in.
Item properties modal
Mark an item as reused
Flip the Reuse toggle on for components that are being kept from an existing building or reused from elsewhere. The item’s color in the inventory changes so reused items are easy to spot.
Reuse toggle enabled for Reinforced concrete 200
Lifetime table
Click Lifetime table next to the lifetime field to open the default service lifetime reference for the active classification system. Pick a Structure group and a Material to read the default lifetime for that combination, then close the table to apply it.
Default service lifetime table grouped by structure type and material
Mapping a material
To map an item, drag a card from the Library panel onto the inventory. You can drop either onto a single type or onto a parent group — the target highlights green while you hover.Map a single type
Drop the library card directly on the type row to map only that one.
Dropping a Library material onto a single type
Map all types in a group
Drop the card on the parent row to apply the same material to every type inside the group at once. This is the fastest way to map repetitive items like all cast-in-place concrete floors.
Dropping a Library material onto a parent group applies it to every type inside
Fill in any missing properties
If the item is still missing required properties when you drop a material on it — most commonly the Lifetime — Real-Time LCA blocks the mapping and opens a Set missing properties to complete mapping modal that lists exactly what is missing.
Missing properties modal — fill in Lifetime to complete the mapping
Linked state
Once mapped, the EPD name appears underneath the item and the row turns green. The unmapped chip on the parent group drops accordingly.
Walls: Reinforced concrete 200 linked to UNI-GREEN BETON C35/45, shown in the material grouping
Same mapping viewed in the type grouping
Inspect an EPD
Click an EPD card in the Library (or the linked EPD name on a mapped item) to open the full EPD details modal — declaration data, validity, indicator values, and the per-stage GWP chart.
EPD details modal
Hotspot chart on mapped items
Open the Item properties for a mapped item and the modal expands to show a GWP Hotspot chart on the right — the life-cycle stages where this specific item’s emissions concentrate. Use it to spot whether A1–A3 (production), B4 (replacement), or C/D dominates, and to compare alternatives before committing.
Item properties for a mapped item — GWP hotspot chart on the right
Include or exclude an item from the calculation
The checkmark control on the right of each inventory row toggles whether the item counts in the running total. A green check means included; clearing it excludes the item without removing its mapping. Handy for what-if comparisons or for setting aside elements that are out of scope.
Include or exclude toggle on each inventory row
Auto mapping
When a project has many similar elements — or when you already have a comparable project mapped — Auto Mapping can do most of the work for you. It scans the inventory and proposes mappings based on prior data, which you then review and accept or reject as a whole. Click Auto Mapping in the top-left of the page to open the dialog.Choose a method
Auto mapping offers three methods. Pick the one that fits your data.
Most frequent — map each item using the EPD it has been mapped to most often
Most recent — map each item using the EPD it was last linked to
By project — map this project from a chosen reference project
Select a reference project
When By project is selected, choose the source in Select building project reference. Only projects you have access to appear in the dropdown.
Picking NTI New Headquarter (Clone) as the reference project
Overwrite existing mappings
By default auto mapping only fills in unmapped items so your existing work is safe. Flip Overwrite currently mapped materials if you want the reference project to replace what is already there.
Overwrite toggle on — existing mappings will be replaced
Review the preview
After clicking Start auto map the dialog closes and you return to the mapping page in a preview state — auto-mapped rows are marked with an Auto Mapped badge and a banner at the top reminds you that nothing has been committed yet.
Preview banner — review the proposed mappings before accepting
Accept or reject
When you are happy, click Accept or Reject Auto Mapping in the top-left to open the decision modal.
Accept or Reject the full auto-mapping pass
- Accept — commit every proposed mapping in one go.
- Reject — discard the entire preview and return to where you started.
Materials successfully auto mapped
AI Classification
AI Classification suggests the right building-element classification codes for inventory items whose BIM source code is missing or incorrect. It runs on a selection you choose — not the whole inventory — so you stay in control of where AI is applied.Select materials to classify
The AI Classification button in the top-left stays gray until you pick items. Use the Select bar above the inventory to enter selection mode and tick the rows you want to classify, then click AI Classification to run on that selection.Review and apply results
Classification takes a moment. When it finishes, the suggested codes appear in a review table — accept the suggestions as-is or overwrite any code you disagree with before applying.AI Classification uses Mistral models, processed on EU servers. AI-generated codes are labelled and should be reviewed before they are applied. See Transparency & privacy for how your data is handled.
Not all classification systems are currently supported.
Request access to AI Classification
AI Classification is an open beta — enabled per organisation on request.