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<ids:specificationifcVersion="IFC4X3"name="Structural safety"instructions="Beams must be assessed for security concerns"minOccurs="1"maxOccurs="unbounded">
Copy file name to clipboardexpand all lines: Documentation/material-facet.md
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@@ -6,9 +6,9 @@ In the simplest case, an element may have a single **Material**. For example, a
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An element may also have multiple **Materials** in three possible scenarios:
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-**Layered materials**: an element (e.g. a wall or slab) is parametrically defined in terms of material layers with a thickness (e.g. stud layer, insulation layer, and gypsum layer). Each layer may have a different **Material**.
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-**Profiled materials**: an element (e.g. a column or beam) is parametrically defined in terms of a profile (e.g. C-profile, Z-profile, or I-profile) extruded along a path. Composite columns and beams may have multiple profiles from different **Materials**.
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-**Constituent materials**: an element (e.g. a window, or slab) where portions of the element are made out of different **Materials** (e.g. the window glazing and the window frame) or mixed (e.g. a concrete slab may be composed of a percentage of cement, aggregate, etc)
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-**Layered materials**: an element (e.g. a wall or slab) is parametrically defined in terms of material layers with a thickness (e.g. stud layer, insulation layer, and gypsum layer). Each layer may have a different **Material**.
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-**Profiled materials**: an element (e.g. a column or beam) is parametrically defined in terms of a profile (e.g. C-profile, Z-profile, or I-profile) extruded along a path. Composite columns and beams may have multiple profiles from different **Materials**.
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-**Constituent materials**: an element (e.g. a window, or slab) where portions of the element are made out of different **Materials** (e.g. the window glazing and the window frame) or mixed (e.g. a concrete slab may be composed of a percentage of cement, aggregate, etc)
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**Value** | ❌ | ✔️ | Any material name or material category. The material name is typically specific to the project or local convention. The material category is recommended to be one of 'concrete', 'steel', 'aluminium', 'block', 'brick', 'stone', 'wood', 'glass', 'gypsum', 'plastic', or 'earth'. | The element must be made out of a **Material** with the specified name or category. If there are multiple **Materials**, then any **Material**, **Layer**, **Profile** or **Constituent** with that name or category will also satisfy the requirement.
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**URI** | ❌ | ❌ | A URI identifying the material compliant with ISO 23386 | You may find valid URIs using the [buildingSMART Data Dictionary](https://search.bsdd.buildingsmart.org/). Materials are found in the data dictionary as classifications with the keyword "/mat/" in the URI.
|**Value**| ❌ | ✔️ | Any material name or material category. The material name is typically specific to the project or local convention. The material category is recommended to be one of 'concrete', 'steel', 'aluminium', 'block', 'brick', 'stone', 'wood', 'glass', 'gypsum', 'plastic', or 'earth'. | The element must be made out of a **Material** with the specified name or category. If there are multiple **Materials**, then any **Material**, **Layer**, **Profile** or **Constituent** with that name or category will also satisfy the requirement.|
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|**URI**| ❌ | ❌ | A URI identifying the material compliant with ISO 23386 | You may find valid URIs using the [buildingSMART Data Dictionary](https://search.bsdd.buildingsmart.org/). Materials are found in the data dictionary as classifications with the keyword "/mat/" in the URI.|
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If no parameters are specified, then it means that any **Material** should be present, regardless of name or category.
Any entity with a material | The entity must have a material | No parameters
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All entities made from wood | The entity must be made out of wood | Value="wood"
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All entities made from brick | The entity must be made out of brick | Value="brick"
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All entities made from either concrete or steel | The entity (e.g. foundation piles) must be made of either concrete or steel | Value=["concrete", "steel"]
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Any entities with a material named with a code starting with "CON" followed by 2 digits, like CON01, CON02, etc | The entity shall have a material with the naming scheme of "CON" followed by two digits, such as CON01, CON02, etc. | Value="CON[0-9]{2}"
|Any entity with a material | The entity must have a material | No parameters|
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|All entities made from wood | The entity must be made out of wood | Value="wood"|
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|All entities made from brick | The entity must be made out of brick | Value="brick"|
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|All entities made from either concrete or steel | The entity (e.g. foundation piles) must be made of either concrete or steel | Value=["concrete", "steel"]|
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|Any entities with a material named with a code starting with "CON" followed by 2 digits, like CON01, CON02, etc | The entity shall have a material with the naming scheme of "CON" followed by two digits, such as CON01, CON02, etc. | Value="CON[0-9]{2}"|
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