creating a sloping RoofTo begin the process of creating a sloping roof, we will cap off the west wing of our building.. Select the west wing exterior walls, as shown in Figure 7.38.. On
Trang 1creating a sloping Roof
To begin the process of creating a sloping roof, we will cap off the west wing of our building The exterior walls used for the perimeter need to be altered You are already a pro at this, so let’s start right there:
1 Go to a 3D view.
2 Select the west wing exterior walls, as shown in Figure 7.38.
3 On the Properties panel select Exterior - Brick And CMU On MTL
Stud (No Parapet), as shown in Figure 7.38
F i g u R e 7 3 8 Changing the walls to Exterior - Brick And CMU On MTL
Stud (No Parapet)
4 In the Project Browser, go to the West Roof floor plan.
5 On the Home tab, select Roof ➢ Roof By Footprint
6 On the Draw panel, select the Pick Walls button.
7 On the Options bar, uncheck Defines Slope.
8 Type 1′–0″ for the Overhang value
Trang 29 Move your cursor over a wall Make sure the overhang alignment line
is facing outside the walls to the exterior
10 Press the Tab key on your keyboard All of the walls will be selected.
11 Pick the wall The magenta lines are completely drawn in Your sketch
should look like Figure 7.39
F i g u R e 7 3 9 The perimeter of the roof is set.
Now it is time to set the slope The objective here is to slope the roof starting
at the northeast corner (as the low point) and ending at the southwest corner
(the high point) This is done by adding a slope arrow:
1 On the Draw panel, select the Slope Arrow button, as shown in
Figure 7.40
F i g u R e 7 4 0 Clicking the Slope Arrow button on the Draw panel
Trang 32 Pick the corner at the upper right and then the corner at the lower
left, as shown in Figure 7.41
3 Press Esc.
4 Select the slope arrow you just added to the model.
5 In the Properties dialog, under Constraints change Specify to Slope.
6 Under Dimensions, change Slope to 3′ / 12″ (see Figure 7.42)
7 Click Finish Edit Mode on the Modify | Create Roof Footprint tab.
F i g u R e 7 4 1 Adding the slope arrow
F i g u R e 7 4 2 Changing the Slope Arrow properties
Trang 4Again, we have a view range issue You can see only the corner of the roof that
sits below the cut plane You can change that with the view range:
1 Press Esc to display the view properties in the Properties dialog.
2 Scroll down the list until you arrive at the View Range row When
you do, click the Edit button
3 In the View Range dialog, under Primary Range set Top to Unlimited.
4 Set the Cut Plane Offset to 40’–0” (see Figure 7.43).
5 Click OK You can now see the entire roof.
6 Go to a 3D view You now have a cool, sloping roof, as shown in
Figure 7.44
F i g u R e 7 4 3 Setting the view range
F i g u R e 7 4 4 The sloping roof
Trang 5Of course there is a wall issue You can attach most of the walls to the roof simply by selecting them and attaching the tops You will, however, have to modify the profile for one wall:
1 In the 3D view, select all of the exterior west wing walls, excluding
the one on the east side that is west of the corridor (you can see it in Figure 7.45)
2 On the Modify | Walls tab, select Attach Top/Base.
3 Pick Top from the Options bar (it is all the way to the left).
4 Pick the sloping roof (see Figure 7.45).
5 In the Project Browser, go to the section called West Corridor Section.
6 Select the wall that does not attach to the roof.
7 On the Mode panel, click Edit Profile.
8 Trace the roof with the line tool Be sure you delete the magenta line
that established the top of the wall
9 On the Sketch tab, click Finish Edit Mode You now have all of the
walls joined to the roof Right now would be a good time to check out the roof in 3D just to make sure the results are pleasing to you
10 Save the model.
F i g u R e 7 4 5 Attaching the tops of the walls to the sloping roof
Trang 6The next item to tackle will be creating a roof by extrusion This is where you
can design a custom roof
Roofs by extrusion
Creating a roof by extrusion is almost always done in an elevation or a section
view The concept here is to create unique geometry that cannot be accomplished
by simply using a footprint in plan A barrel vault or an eyebrow dormer comes to
mind, but there are literally thousands of combinations that will influence how
our roofs will be designed
To get started, the last roof left to be placed is the south jog in the west wing
of the model This is the perfect area for a funky roof!
The first thing to do is to change the three walls defining the jog to the
Exterior - Brick And CMU On MTL Stud (No Parapet) wall type:
1 Go to a 3D view.
2 Select the three walls that comprise the jog in the south wall, as
shown in Figure 7.46
3 From the Properties dialog, switch these walls to Exterior - Brick And
CMU On MTL Stud (No Parapet), as shown in Figure 7.46
F i g u R e 7 4 6 Changing the wall types as we have been doing all along
4 Go to the Level 1 floor plan.
5 On the View tab, select the Elevation button.
6 In the Properties dialog, be sure the elevation is a Building elevation (you
are given the choice in the drop-down menu at the top of the dialog box)
Trang 77 Place the elevation as shown in Figure 7.47.
8 Pick the view extents (the blue grips at the ends of the elevation), and
drag them in so you can see only the west wing
9 Make sure you pull the view depth window back to see the wall
beyond (see Figure 7.47)
10 Change View Scale to 1/2″ = 1′–0″
11 Change Detail Level to Fine.
12 Change View Name to South Entry Elevation.
13 Click Apply.
14 On the Home tab, select the Ref Plane button; then, in the Draw panel,
click the Pick Lines button
F i g u R e 7 4 7 Adjusting the view
15 Set Offset to 1′–6″
16 Pick the southmost wall and offset the reference plane away from the
building (see Figure 7.48)
17 Press Esc twice to clear the command.
18 Select the reference plane.
19 In the Properties dialog, change the name to South Entry Overhang.
20 Click Apply.
21 Open the elevation called South Entry Elevation.
after you place the
elevation, you will
have no idea where
the view is extended
to Is it to the end
of the building? You
just don’t know If
you pick the elevation
arrow (the part of the
elevation marker),
you can then
grip-edit the elevation to
see what you need.
Trang 8F i g u R e 7 4 8 Adding a reference plane
The importance of that reference plane you just added becomes obvious at this
point You needed to establish a clear starting point for the roof you are about to
add Because the roof will be added in an elevation, Revit does not know where
to start the extrusion This reference plane will serve as that starting point
1 On the Home tab, select the Roof ➢ Roof By Extrusion command, as
shown in Figure 7.49
2 When you start the command, Revit will ask you to specify a
refer-ence plane Select Referrefer-ence Plane: South Entry Overhang from the
Name drop-down list, as shown in Figure 7.50
3 Click OK.
4 In the next dialog, change the Level setting to Level 3, and click OK.
5 In the Home tab, select Reference Plane as shown in Figure 7.51, then
click the Pick Lines button
6 Offset a reference plane 3′–0″ to the left and to the right of the
exte-rior walls, as shown by numbers 1 and 2 in Figure 7.51
7 Offset a reference plane 4′–0″ up from the top of the wall, as shown by
number 3 in Figure 7.51
8 In the Properties dialog, click the Edit Type button.
9 Click Duplicate.
10 Call it Canopy Roof.
While you are in Sketch Mode, when
I tell you to click the roof properties button, you need
to click the roof properties button
on the right, not the one on the left they are two different properties.
O
Trang 9F i g u R e 7 4 9 The Roof ➢ Roof By Extrusion command
F i g u R e 7 5 0 Selecting the South Entry Overhang reference plane
11 Click the Edit button in the Structure row.
12 In the Edit Assembly dialog, change the structure thickness to 4″, as shown in Figure 7.52
13 Click OK twice to get back to the model.
Trang 10F i g u R e 7 5 1 Adding reference planes to use as construction lines
F i g u R e 7 5 2 Changing the thickness of the canopy roof