How to get wall materials and thicknesses using API

[Anonymous]

Attached is a simple IFC model with one wall. Material of the wall is '100 block insul. cav.' and it has four layers:
- Common Brick 100m
- Air Space 50mm
- Insulation 25mm
- Concrete Block 100mm

Do you know how to get materials and thicknesses using API?

[Oleg]

I am not sure, but may be it is not material and composite fill.

Look at API_CompWallType attribute.

[Ralph Wessel]

Matti wrote:
Do you know how to get materials and thicknesses using API?

As Oleg says, start with API_CompWallType. The critical parts that describe the materials that make up the composite are in an attached memo structure API_AttributeDefExt, specifically the arrays of API_CWallComponent and API_CWallLineComponent.