Modelling Of Upper Roof
- Harika Inanc (Unlicensed)
- mert.goktas (Unlicensed)
Upper Roof plan layout and loading plan are shown below. We are going to use following features to model the upper roof floor.
→ Overlay
→ Slab edge & slab piece
→ Slab opening
→ Arbitrary & rectangular column
→ Shear wall & analytical wall
→ Plan view cutout (for shear wall)
→ Shear wall opening
→ Area loading
Go to Upper Roof → Overlay
Select Xref drawing as Upper Roof Linked Drawing
Click OK
Zoom in and start drawing. Since upper roof drawing is the top floor plan there is no column or shear wall above. We will draw slab, beam, column below and shear wall below objects.
Drawing Slab
Click + next to Upper Roof item on tree view
Go to Slab → Slab Edge Button
Start to draw slab
You can view slab edge drawing by right clicking on spreadsheet and selecting it in AutoCAD as shown below.
Enter the properties of slab such as thickness or clear cover.
You can edit material from clicking material cell above if it is desired to be different from default slab material.
Since there is no association between slabs you should draw them all by using slab edge command. So just hit space to repeat last command which is slab edge and draw. Enter slab edge properties as shown above.
Click update button to update changes on 3D view and cloud
To refresh the 3D view;
Use the "Refresh Parametric Model" button
If reference drawings are floor plans which means it shows columns/shear walls above, you must overlay the drawing of one lower floor to draw columns and shear wall which are carrying the slab.
To draw shear walls and columns below;
Go to Upper Roof → Overlay
Select Xref drawing of Roof linked drawing
Unselect Upper Roof linked drawing
Click OK
Now you see the shear walls and columns below.
Drawing Columns
There is 2 columns in upper roof.
Since the column shown on the right is rectangle shaped but rotated you must draw it with arbitrary column command as shown below.
Go to Upper Roof → Columns
Click arbitrary column and draw the column shown
Click rectangular column and draw the other column
Drawing Shear Walls
Go to Upper Roof → Shear Walls
Click Shear Wall to start drawing
You can select shear wall drawing by right clicking on spreadsheet and selecting it in AutoCAD.
You must draw analytical walls of shear walls for finite element analysis and for exporting floor models to CSI SAFE correctly.
To draw analytical walls;
Spreadsheet Data → Analytical Walls
Click Analytical wall to draw
You must draw a straight line from mid point of one edge to mid point of other edge of shear wall. If shear wall is not straight you must draw analytical walls for each directions of shear wall parts.
Corner intersection of two analytical walls linked to one shear wall must be as shown on the right.
Enter thickness of each analytical wall
Enter offset value of reference line of analytical wall (if necessary)
If an analytical wall intersects another from middle, break point is automatically created in the intersection point. But you can also create break point to define different thickness and offset to analytical wall parts.
Go to analytical wall on spreadsheet
Click No Break Pts cell
Draw line starting from start point of analytical wall to intersection point
Continue drawing to the end point of analytical wall
Hit ESC
You can edit thickness or refline offset of analytical wall parts which is divided by break points with different values by entering “,” between values as shown above.
We will create an opening on shear wall for door as shown below.
Go to analytical wall which the opening will be drawn
Click Show in Elevation View
Click Wall Opening → Select Rectangle Shape
You must consider the point locations on plan and elevation view.
Draw a rectangular opening with dimensions above.
Click Show Story to go back to plan view.
There is a closed polygon shaped shear wall in floor plan, we must create a plan cut-out for the closed polygon shaped shear wall.
Spreadsheet → Shear Walls
Click Shear Wall
Draw outer polygon of shear wall
Click Plan View Cutout
Draw inner polygon of shearwall
Hit ESC after drawing
3D view of shear walls must be as in below after updated to cloud.
Drawing Load Geometry
Go to loads
Click Area
Draw loading area the same as slab edge polygons
Select load case according to the loading schedule
Load cases are the loads that we defined in Loading page.
You can copy the load area and assign different load case.
Right click on the load in the spreadsheet
Click Duplicate
Select load case for duplicated area
Each slab edge area must be loaded with superimposed dead load and live load.
Upper roof modelling is completed. 3D of upper roof is shown below.