Revit Architecture 2008

Autodesk Revit Tutorials, Revit Families, BIM Revit

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Home CHAPTER 1 Intrduction What to expect from BIM Where can you go from here The bottom ine CHAPTER 2 Introduction Working with Revit Parametric Elements The Revit User Interface Using the Project Browser The Bottom Line CHAPTER 3 Introduction Selecting, Changing, and Replacing Elements Editing Elements Interactively Other Useful Tools The Bottom Line CHAPTER 4 Introduction Starting a Project with a Custom Template Settings for Graphic Consistency Creating Custom Annotation Tags Creating Custom Title Blocks Creating a Custom Title Block with the Family Editor The Bottom Line CHAPTER 5 Introduction Wall Types Floor and Roof Types Ceiling Types Door and Window Types Stair Types Types and Type Catalogs Graphic Overrides of Host Objects with Complex Structure Additional Global Project Settings The Bottom Line CHAPTER 6 Introduction Modeling with Revit Principles of Modeling in Revit Where Can You Go From Here? The Bottom Line CHAPTER 7 Introduction Massing Studies The Bottom Line CHAPTER 8 Introduction Conceptual Design and Early Studies The Bottom Line CHAPTER 9 Introduction Revit Design Options The Bottom Line CHAPTER 10 Introduction Modeling Parametric 3D Families Choosing the Right Family Template Types of Families Smart Workflow: Nesting One Family into Another Parametric Arrays in the Family Editor Encoding Design Rules Building a Parametric 3D Family The Bottom Line CHAPTER 11 Introduction Basic Walls: Advanced Modeling Techniques Curtain Walls: Advanced Design Techniques Roofs Roofs and Slabs: Advanced Shape Editing Railings and Fences The Bottom Line CHAPTER 12 Introduction Drawings with Shadows Color-Coded Plans and Sections Elevations That Convey Depth Working with Perspective Views Rendering Creating Animated Walkthroughs Exporting to Other Formats The Bottom Line CHAPTER 13 Introduction Preliminary Design Tools Calculating Areas Schedules Using Schedules for Preliminary Cost Estimates The Bottom Line CHAPTER 14 Introduction Sustainability in Architecture Preliminary Design Tools Tracking Recycled Materials Window Surface Percentage vs. Room Area Energy Analysis The Bottom Line CHAPTER 15 Introduction Annotating Your Views Displaying Information about Rooms Schedule Keys Tags Shared Parameters Text and Keynotes The Bottom Line

Roofs and Slabs: Advanced Shape Editing

Sloped Roofs Warped Surfaces
Sloped Roofs
Let’s do a short exercise that shows how to make a sloped roof like the one in Figure 11.48 (shown in plan view).
Figure 11.48 A roof plan showing a roof divided in seg-ments with drainage points
Follow these steps:
Open Modifying Roof Shape start.rvt from the website for this book (www.sybex.com/go/masteringrevit2008). Select the roof that has been already prepared for you. Activate the Draw Split Lines tool (note that the color of the rest of the model grays out) Sketch ridge lines to divide the roof into areas that will be independently drained. Using the same tool, draw diagonal lines within those areas to create the valleys.
What you have done is split the roof surfaces into many subslabs, but they are still all at the same height/inclination. You should have a roof that looks like Figure 11.49.
Figure 11.49 Using the Draw Split Lines tool, ridges and valleys are created
Switch to a 3D view. To add a slope, you need to edit the height of the drainage points. Tab-select the crossing point of the diagonals. New controls that allow you to edit the text appear, and you can either move the arrows up and down or type in a value for the point height. As shown in Fig-ure 11.50, type in -0´ 5. (-13cm)
Figure 11.50 Edit points to change height
Repeat steps 1-7 for all three drainage points. If you need to move the point to another position (as often happens to accommodate what’s happening in the room below the roof), it is easily done by a simple select and drag-and-drop of the point. Make a section through the roof—if possible, somewhere through the drainage point. Open the section; change the detail level to Fine view to see all layers. What you will see is that the entire roof structure is sloped toward the drainage point.
What if you wanted the insulation to be tapered but not the structure. For that, the layers of the roofs can now have variable thickness. Let us see how we can apply a variable thickness to a Layer.
Select the roof, and navigate to its type properties to edit its structure. Activate the preview. You will notice that in the roof-structure preview, you do not see any slopes. That is correct and will not change. This preview is just a theoretical preview of the´ structure and will not show the exact sloping. You'll now see a Variable column under Layers (Figure 11.51). This allows layers of the roof to vary in thickness when slopes are present. Check Variable for the insulation material.
Figure 11.51 The Edit Roof Structure dialog
Go back to the section view and take a look at the difference that this change provoked. As you will see, only the insulation is tapered now, while the structure remains flat.
Currently this modifier cannot be applied to any floor or roof that has a nonstraight segment. However, you can work around that by using a vertical opening (Figure 11.52). You need to start with a simplified straight segment floor/roof shape that contains no arcs. You add the arc as a sub-traction in the form of an opening. By using the Opening tool in the Modeling tab and choosing the Vertical option, you can then sketch the arcs you need.
Figure 11.52 Roof Opening can be used to make non-straight roofs with the new slope options.