Creating Roofs and Roof Slabs

1
Chapter 7

• Creating Roofs and Roof Slabs

2
Objectives

• Use RoofAdd to create hip, gable, shed, and
  gambrel roofs
• Edit roof plate height, roof slope, thickness,
  overhang, and fascia angle using the Properties
  palette
• Use grips to change a hip roof to a gable roof
• Convert walls and linework to a roof
• Convert roofs, walls, and linework to roof slabs
• Create roof slabs and dormer roofs that intersect
  the main roof
• Extend walls to the roof line

3
Accessing Roof and Roof Slab Commands
4
Roof Command Options

• Select Roof from the Roof slab flyout of the
  Build panel.
• or
• Select Roof from the Design palette.
• Edit Properties palette to define the roof

5
Properties Palette for Creating a Roof
6
Roof Properties Palette of an Existing Roof
7
Content of the Roof Properties Palette

• Design-Basic
• General
• Description
• Layer
• Bound Spaces
• Dimensions
• Thickness
• Edge cut-Square/Plumb
• Next Edge
• Shape-Single, Double and Gable
• Overhang

• Lower Slope
• Plate Height
• Rise
• Run
• Upper Slope
• Upper height
• Rise
• Run
• Slope
• Location
• Rotation
• Elevation

8
Defining the Roof Properties

• The Properties palette consists of edit fields to
  define the shape, overhang, and slope of the
  roof.
• The roof is based upon a specified slope and
  plate height.
• The Workspace options of the roof are
• Shape
• Gable
• Overhang
• overhangValue
• PHeight
• PRise
• PSlope
• UHeight
• URise
• USlope
• Match

9
Specifying Roof Point Locations

• When the RoofAdd command is executed the
  Properties Palette opens as shown at right.
• Respond to the command line prompts to specify
  roof points.
• Select points using the Endpoint, Intersection,
  or Node object snap
• Points selected are located at the bottom of the
  wall with a Z coordinate 0

10
Plate Heights-Single Slope and Double Slope
11
Roof Edge Properties
12
Truss Roof Representation

• Select Outer Edge of Wall for Roof
  VerticesCreates a Truss Roof Representation

13
Conventional Frame Roof Representation

• Select Inner Edge of Wall for Roof
  VerticesCreates a Conventional Roof
  Representation

14
Steps to Creating a Roof from Walls

• Select the Roof tool from the Design tool
  palette, right click and select Apply Tool
  Properties togtLinework and Walls
• Respond to the command line prompts as shown on
  the next slide.

15
Apply Tool Properties to gtLinework and Walls,
cont

• Choose walls or polylines to create roof profile
• Select objects (Select the walls using a
  crossing window from p1 shown at left.)
• Specify opposite corner (Select a point near p2
  as shown at left.)
• 8 found
• Select objects EnterKey (Press the
  EnterKey to end selection.)
• Erase layout geometry? Yes/No ltNogt EnterKey
  (Press the EnterKey to retain the original
  geometry and develop the roof shown at left.)

16
Steps to Creating a Gable Roof

• Select the Roof tool from the Design palette.
• Edit the Properties palette ShapeSingle Slope,
  Overhang16", select point p1 as shown below.
• Retain settings in the Properties palette, select
  point p2.

17
Steps to Creating a Gable Roof cont

• 4. Edit the Properties palette set
  ShapeGable, Overhang3", select point p3.
• 5. Edit the Properties palette set
  ShapeSingle Slope, Overhang16", select point
  p4.
• 6. Edit the Properties palette set
  ShapeGable, Overhang3, select point p5 as
  shown in next slide.

18
Gable Roof Created Using the Properties Palette
19
Accessing Edit Roof Edges/ Faces Command

• Select the roof, choose Edit Edges from the
  Modify panel of the Roof tab

• Select the roof, choose Edit Edges/Faces from the
  shortcut menu

20
Changing the Edge to Gable
21
Steps to Editing Roof Edge and Faces

• Select the roof, right click and select Edit
  Edges/Faces from the shortcut as shown below.
  Respond to the command prompts as shown below.
• Select a roofedge (Select roof edge at p1 shown
  below.)
• Select a roofedge EnterKey (Press the
  EnterKey to end selection and open the Roof
  Edges and Faces dialog box.)
• Edit the Roof Edges and Faces dialog box, click
  in the Overhang column of the top Roof Edges
  section, overtype the overhang value to 12 then
  click in the Roof Faces by Edge click in the
  Slope column and overtype the slope value to 90
  as shown below. Pick OK to close the Roof Edges
  and Faces dialog box.
• Slope of roof changed as shown at right.

22
Editing Edges/Faces from the Properties Palette
23
Steps to Using Grips to Create a Gable Roof

• 1. Select a roof to display its grips.
• 2. Select the ridge grip at p1 as shown below.
• 3. Stretch the hot grip to the left specify the
  new location by selecting a point to the left
  near p2 as shown in B below.
• 4. Press Escape to remove the display of grips.
  The hip roof plane is converted to a gable as
  shown in C below.

24
Create a Gambrel Roof Using Double Slope
25
Accessing the Roof Slab Command
26
Roof Slab Properties and Components
27
Advantages of Roof Slabs

• Roof slabs allow you to add detail features such
  as fascia, soffit, and frieze components
• Roof slabs can be trimmed, extended, and mitered
• Roof slabs can be trimmed to create a dormer
• Materials can be assigned to a roof slab

28
Roof Slab Edge Section
29
Roof Slab Properties
30
Content of the Roof Slab Properties Palette

• General
• Description
• Style
• Bound spaces
• Mode-Direct/Projected
• Dimensions
• A-Thickness
• B-Vertical offset
• C-Horizontal offset
• Justify-Top, Center, Bottom, and Slopeline
• Base height

• Direction
• Overhang
• Baseline edge
• Perimeter edge
• Slope
• Rise
• Run
• D-Angle

31
Roof Slab Justifications
32
Horizontal and Vertical Offsets
33
Closing a Roof Slab with Direction

• The roof slab is created by selecting two points
  to specify the pivot point and baseline, and then
  selecting Ortho close from the shortcut menu.
• The Direction property specified in the
  Properties palette allows you to create a roof
  slab to the left or right of the first roof edge
  line

34
Application of Ortho Close

• Ortho close option can also be used after
  specifying a series of points as shown at right.
• The roof shape is completed as necessary to form
  a right angle between the last roof edge and the
  first roof edge segment

35
Application of the Close Option

• Select a series of points to specify roof slab
  vertices, right click and select Close.
• Last segment is created to close to the first
  edge without regard to the angle formed.

36
Converting a Closed Polyline to a Roof Slab

• Select Roof Slab of the Design palette,
  right click and choose Apply Tool Properties
  togtLinework, Walls and Roof
• Select roof, walls or polylines (Select polyline
  at p1 shown at right.)
• Select roof, walls or polylines EnterKey
  (Press the EnterKey to end selection.)
• Erase layout geometry? Yes/No ltNogt EnterKey
  (Press the EnterKey to retain the polyline.)
• Creation mode Direct/Projected ltProjectedgt
  EnterKey (Press the EnterKey to project the
  roof above the polyline.)
• Specify base height lt0"gt8' EnterKey (Type the
  distance value to project the roof.)
• Specify slab justification Top/Center/Bottom/Slop
  eline ltBottomgt EnterKey (Press the
  EnterKey to create a bottom justified slab.)

37
Creating a Roof Slab from a Wall

• Select Roof Slab of the Design palette,
  right click and select Apply Tool Properties
  togtLinework, Walls and Roof
• Select roof, walls or polylines 1 found (Select
  wall at p1 shown at right.)
• Select roof, walls or polylines EnterKey
  (Press the EnterKey to end selection.)
• Erase layout geometry? Yes/No ltNogt EnterKey
  (Press the EnterKey to retain the wall.)
• Specify slab justification Top/Center/Bottom/Slop
  eline ltBottomgt EnterKey (Press the
  EnterKey to specify a bottom justification.)
• Specify wall justification for edge alignment
  Left/Center/Right/BaselineltBaselinegt r
  (Specify the right justification.)
• Specify slope Direction Left/Right ltLeftgt
  EnterKey (Press the EnterKey to select the
  default left justification.)

38
Converting a Roof to a Roof Slab

• Select a roof, choose Convert from the Modify
  panel of the Roof tab.

• Select a roof, choose Convert to Roof Slabs from
  the shortcut menu.

39
Converting a Roof to a Roof Slab

• Select a Roof choose Convert from the Modify
  panel.
• The Convert to Roof Slabs dialog box opens.
• Specify a Roof Slab Style and clear Erase Layout
  Geometry check box, to retain the roof object.
• Each plane of the roof is converted to a roof
  slab as shown at lower right.

40
Converting a Roof to a Roof Slab Using the
Shortcut Menu

• Select the roof, right click and select Convert
  to Roof Slabs. The Convert to Roof Slabs dialog
  box opens as shown below.
• Specify the roof slab style and respond to the
  Erase Layout Geometry check box.
• Select OK to dismiss the Convert to Roof Slabs
  dialog box.

41
Modifying Roof Slabs
42
Content of the Properties Palette for Existing
Roof Slabs

• Design-Basic
• General
• Description
• Layer
• Style
• Bound Spaces
• Shadow display
• Dimensions
• A-Thickness
• B-Vertical offset
• C-Horizontal offset
• Edges button
• A-Overhang
• Edge Style
• B-Edge Cut
• C-Angle

• Slope
• Rise
• Run
• Slope
• Hold fascia elevation
• Pivot Point X
• Pivot Point Y
• Pivot Point Z
• Location
• Elevation
• Additional information button

43
Editing Using the Roof Slab Edges Dialog Box

• Select the roof slab, right-click and choose Edit
  Roof Slab Edges. Select an edge to open the Roof
  Slab Edges dialog box as shown below.

44
Grips of the Roof Slab
45
Trimming a Roof Slab Using ROOFSLABTRIM

• Select the Roof slab at p1 shown below and select
  Trim from the Modify panel of the Roof Slab tab.
• Respond to the workspace prompts as follows
• Select trimming object (a slab, wall, or
  polyline) (Select the wall at p2 at left shown
  below.)
• Specify side to be trimmed (Select a point near
  p3 as shown below.)
• Roof slab is trimmed as shown at right below.

46
Extending a Roof Slab Using ROOFSLABEXTEND

• (Select a roof slab p1 as shown at left below,
  select Extend from the Modify panel of the Roof
  Slab tab. Respond to the following workspace
  prompts.)
• Select an object to extend to (a slab or wall)
  (Select the wall at p2 at left below.)
• (Slab will be extended by lengthening two edges.)
• Select first edge to lengthen (Select the roof
  slab at p3 shown at left below.)
• Select second edge to lengthen (Select the slab
  at p4 shown at left below.)
• (Wall extended as shown at right below.)

47
Mitering Roof Slabs Using ROOFSLABMITER-Intersecti
on Method

• (Select a roof slab and select Miter from the
  Modify panel of the RoofSlab tab.)
• Miter by Intersection/Edges ltIntersectiongt
  EnterKey (Press the EnterKey to select the
  Intersection option.)
• Select first roof slab at the side to keep
  (Select the roof slab at p1 as shown at left
  above.)
• Select second roof slab at the side to keep
  (Select the roof slab at p2 as shown at left
  above.)
• (Roof slabs are mitered as shown at right above.)

48
Mitering Roof Slabs Using ROOFSLABMITER-Edges
Method

• Select a roof slab and select Miter from the
  Modify panel of the RoofSlab tab.
• Miter by Intersection/Edges ltIntersectiongt e
  EnterKey (Type e to select the Edges option.)
• Select edge on first slab (Select the edge at
  p1, shown at left above.)
• Select edge on second slab (Select the edge at
  p2, shown at left above.)
• Edges extended to form miter as shown at right
  above.

49
Cutting a Roof Slab-ROOFSLABCUT

• (Select the roof slab at p1 shown at left and
  select Cut from the Modify panel of the RoofSlab
  tab.)
• Select cutting objects (a polyline or connected
  solid objects) (Select the polyline at p2.)
• Select cutting objects (a polyline or connected
  solid objects) EnterKey (Press the EnterKey
  to end object selection.)
• (Verify the roof slab is cut by selecting the
  slab as shown at right below.)

50
Adding a Roof Slab Vertex-ROOFSLABADDVERTEX

• Select a roof slab and select Add from the
  Vertex flyout of the Modify panel in the Roof
  Slab tab.
• Specify point for new vertex _mid of (Hold the
  ShiftKey down, right click and select Mid from
  the shortcut then select the edge near p1.)
• Select the slab to verify the new vertex grip
  point.

51
Adding a Hole to a RoofSlab

• Select a roof slab and choose Add from the Hole
  flyout menu of the Modify panel in the Roof Slab
  contextual tab. Respond to the workspace prompts
  as follows
• Select closed polyline or connected solid objects
  to define a hole (Select the polyline at p1 as
  shown at right.)
• Select closed polyline or connected solid objects
  to define a hole (Press ENTER to end selection.)
• Erase layout geometry? Yes/NoltNogt ENTER (
  Choose No.)

52
Adding Body Modifier to Roof Slabs

• Select the roof slab at p1 and choose Body
  Modifier
• Select objects to apply as body modifiers
  (Select mass element at p2)
• Select objects to apply as body modifiers Enter
  (Press Enter to end selection.)
• Edit the Add Body Modifier dialog box. Choose
  Replace from the Operation drop-down and Erase
  Selected Objects.

53
Creating a Roof Dormer

• (Select the roof slab at p1 shown at right select
  Dormer from the Dormer panel of the Roof Slab
  tab.)
• Select objects that form the dormer (Select
  wall at p2.)
• Select objects that form the dormer (Select
  wall at p3.)
• Select objects that form the dormer (Select
  wall at p4.)
• Select objects that form the dormer (Select
  wall at p5.)
• Select objects that form the dormer (Select
  dormer roof slab at p6.)
• Select objects that form the dormer (Select
  dormer roof slab at p7.)
• Select objects that form the dormer EnterKey
  (Press the EnterKey to end selection.)
• Slice wall with roof slab Yes/No ltYesgt
  EnterKey (Press the EnterKey to slice the
  dormer wall to remove the lower portion of dormer
  wall.)
• (Dormer created as shown at right, to complete
  the operation, use the erase command to erase the
  wall at p8.)

54
Determining Roof Intersections

• To determine the valley intersections of multiple
  roof slabs
• Create a mass group
• Use the mass group to identify where the planes
  intersect
• Draw a polyline that traces the intersection, and
  use this polyline as a cutting object with the
  RoofSlabCut command to remove the unnecessary
  extension of the roof slab

55
Determining Roof Intersections using Mass Groups

• Create a Mass Group to view the roof
  intersection.
• Draw a polyline to specify cutting line of roof
  slabs.
• Use the RoofSlabCut command to cut roof slabs

56
Attaching a Roof to a Mass Group

• Select the Mass Group from the Massing tool
  palette.
• Respond to the workspace prompts as follows
• Select elements to attach (Select roof at p1)
• Select elements to attach (Select roof at p2)
• Select elements to attach (Select roof at p3)
• Location (Select a location near p4.)
• Attaching elements
• 3 element(s) attached.

57
Steps to Cutting and Editing Roof Slabs Based
Upon the Roof Intersection

• 1.  View the roof from Top. Draw a polyline that
  traces the intersection of the roof using the
  Intersection object snap The polyline is shown
  at p5 in the isometric view.
• 2.  Select Southwest Isometric from the View
  flyout. Select the group right-click and choose
  Detach and detach the roof slabs from the group.
• 3.    Select the roof slab at p6 as shown at
  right, right click and select Cut from the
  short-cut menu. Respond to the workspace prompts
  as shown below.
• Select cutting objects (a polyline or connected
  solid objects) (Select the polyline at p5.)
• Select cutting objects (a polyline or connected
  solid objects) EnterKey
• Erase layout geometry Yes/No ltNogtN EnterKey
• 4.      Repeat step 3 to cut the p7 plane.
• 5.      Erase the roof planes which penetrate
  into the building, slabs at p8 and p9.

58
View of Slab Intersection After Cut
59
Roof Slab Styles

• Roof slab styles include preset values for
  thickness and predefined roof slab edge styles.
• Fascia, soffit, and frieze components can be
  assigned to roof slab edge styles of the roof
  slab.
• Materials can be assigned to the roof slab to
  represent the roofing materials.
• The Standard roof slab style is the default roof
  slab style when a roof slab is inserted.
• Fourteen roof slab styles are included in the
  Design Tool Catalog.

60
Creating Roof Slab Styles

• Select Roof Slabs and Slabs category of the
  Design Tool Catalog Imperial or Design Tool
  Catalog Metric from the Content Browser.

61
Importing Roof Slab Styles from the Content
Browser
62
Defining a Roof Slab Stylein the Style Manager
63
Components Tab
64
Materials Tab
65
Material Definition Sources

• Apply Material Definitions using Material tool of
  the Design palette
• Or
• Import the material definition in the Style
  Manager from \Documents and Settings\All
  Users\Application Data\Autodesk\ACA
  2010\enu\Styles\Imperial\Material Definitions
  (Imperial)
• Or
• \Documents and Settings\All Users\Application
  Data\Autodesk\ACA 2010\enu\Styles\Metric\Material
  Definitions (Metric)

66
Material Definitions of the Material Definitions
(Imperial).dwg
67
Procedure to Assign Material Definitions to a
Roof Slab

• Import material definitions from the
  Visualization Catalog gt AEC Material Tools of the
  Content Browser
• Assign the Material Definition to the Roof Slab
  component in the Materials tab Roof Slab Styles
  dialog box.
• Or
• Assign material definitions using the Material
  tool of the Design palette

68
Classifications Tab
69
Display Properties Tab
70
Creating a New Roof Slab Edge Style

• Roof Slab Edge Styles are assigned to a roof slab
  to represent fascia, frieze, and soffit.
• Roof Slab Edge Styles are defined in the Roof
  Edge Style folder of the Style Manager
• Roof Slab Edge Styles are accessed from the Style
  Manager from the Roof Slab Roof Slab Edge
  Styles (Imperial) drawing of the Imperial or
  Metric Style folders of Content.

71
Roof Slab Edge Styles in the Style Manager
72
General Tab Roof Slab Edge Styles
73
Defaults Tab-Roof Slab Edge Styles
74
Design Rules-Roof Slab Edge Styles
75
Materials Tab-Roof Slab Edge Styles
76
Version History Tab of Roof Slab Edge Style
77
Materials Applied to Roof Slab and Roof Slab Edge
78
Assigning a Roof Slab Edge Style to a Roof Slab
Edge

• Roof slab edge styles can be assigned to a roof
  slab edge by selecting the Edges button in the
  Properties palette of an existing roof slab.
• Or
• Select a roof slab, right click and select Edit
  Roof Slab Edges from the shortcut menu. Respond
  to the command line prompts to edit an edge

79
Edit Roof Slab Edges dialog box Accessed from the
Edges button of the Properties palette
80
Specify a Roof Slab Edge Style for an Edge in the
Edit Roof Slab Edges dialog box