Materials¶
Manage → Materials opens the material browser in the main view, like Revit's.
The browser¶
- Left: the model's materials, with a search box, their family's colour and how many elements are made of each. Below, the library.
- Right, for the material chosen:
- Identity: name, family (concrete, steel, timber…), IFC category;
- Properties: density (kg/m³), modulus E (MPa), characteristic strength (MPa) and where the values come from;
- Graphics: how its family is drawn, from the standards: the colour on screen, the hatch where cut and where seen. Edit in the standards opens them on that family.
In a .bimble model, every change is a change of the model (undo, history). Dragging a value is one
step. Use the values of C30/37 copies the library's values for the grade the name refers to;
Clear the values removes them.
An IFC's materials are listed read only: their values are those of the library grade their name refers to.
The library¶
Standard grades, with the values of the tables they come from:
| Grades | Values |
|---|---|
| Concrete C20/25 … C50/60 | fck and Ecm from EN 1992-1-1 Table 3.1; 2500 kg/m³ (25 kN/m³, EN 1991-1-1) |
| Structural steel S235, S275, S355, S460 | fy (t ≤ 40 mm) from EN 1993-1-1; E = 210 GPa; 7850 kg/m³ |
| Reinforcement B500B | fyk = 500 MPa; Es = 205 GPa (SIA 262) |
| Timber C24 | fm,k, E0,mean, ρmean from EN 338 |
| Glulam GL24h, GL28h, GL32h | fm,g,k, E0,g,mean, ρg,mean from EN 14080 |
They are a starting point: check them against the standard your project uses. Add puts a grade in the model's materials.
A material's name finds its grade: "C30/37", "S235(R)", "Steel S355 J2", "GL24h 24x46".
Where the values are used¶
- Schedules: the Mass column is volume × density (schedules).
- IFC exports:
Pset_MaterialCommon.MassDensity,Pset_MaterialMechanical.YoungModulus, andPset_MaterialConcrete.CompressiveStrengthorPset_MaterialSteel.YieldStress, in SI units.