On the Massing & Site tab, click the Split Surface button, as shown in Figure 18.7.. Click the Edit Surface button on the Modify | Topography tab.. On the Massing & Site tab, click the
Trang 1C h a p t e r 1 8 • S i t e a n d To p o g r a p h y
8 0 4
Excellent! You are getting the hang of this Next, we need to create some raised areas (small hills) where we can eventually add some plantings and different materials The problem is, to create a small hill, we need the site to sharply rise
to the new elevation To achieve this, we have to physically split the surface
splitting the surface
When you need a drastic change in the surface’s elevation without influencing the rest of the site, you must split the surface Just to warn you up front, be deliberate about when and where you do this because you are physically cutting a hole in the surface and adding a secondary toposurface to the void Although you can merge these surfaces back together, in some situations it can be difficult to merge cleanly The objective of the next procedure is to split the toposurface and create smaller toposurfaces
1 In the Project Browser, go back to the Site plan.
2 On the Massing & Site tab, click the Split Surface button, as shown in
Figure 18.7
3 Select the toposurface.
4 Zoom in on the corridor area that links the east and the west wings,
as shown in Figure 18.8
F i g u R e 1 8 7 The Split Surface button
Trang 25 On the Draw panel, click the Line button.
6 Sketch a perimeter similar to the one in Figure 18.8.
7 Click Finish Edit Mode You now have a new toposurface.
F i g u R e 1 8 8 The split surface sketch
Now we can manipulate this surface without influencing the main topography
This is the ideal situation for creating bumps and berms
The objective of the next procedure is to raise this toposurface to an elevation
of 4′–0″ We do this by using a point and placing the datum in the middle of
the berm
1 Select the newly formed toposurface as shown in Figure 18.9.
2 Click the Edit Surface button on the Modify | Topography tab.
3 On the Tools panel, click the Place Point button.
4 On the Options bar, enter a value of 4′–0″ in the Elevation field
5 Pick three points near the center of the hill, as shown in Figure 18.9.
F i g u R e 1 8 9 Adding a new datum elevation
Trang 3C h a p t e r 1 8 • S i t e a n d To p o g r a p h y
8 0 6
6 Click Finish Surface.
7 Go to a 3D view, and orbit around so the hill is visible.
8 Select the hill.
9 In the Properties dialog, in the Material field, click the […] button.
10 In the Materials dialog, select Site - Earth.
11 Click OK.
12 Deselect the topography Your site should resemble Figure 18.10.
N O T E Yes, you can copy these little hills around just like anything else in revit—I am very glad you asked! after you copy the hills, you can edit them just like any other toposurface
Well, I think you can see where this is all going When you work with sites, it
is just good to have some kind of procedure This takes us to our next perplex-ing situation Suppose we just want to keep the contours and the dips and hills intact, and we only want to specify a new material in a subregion of the main topography? Well, we can!
F i g u R e 1 8 1 0 The raised area of the site
creating subregions
The purpose of a subregion is to match two surfaces together so any change in ele-vation or lateral movement will be reflected within both regions We need this abil-ity for walks and most roadways When you split the toposurface into subregions,
after you place the
points in the model,
you can still pick the
points and drag them
left and right, as
well as up and down
also, if you look at
the site in section or
elevation, you can
pick the points and
drag them up and
down, too.
Trang 4you give yourself the freedom to manipulate two different materials within the
same datum Another benefit to subregions is that the file size will remain as if
there was still one toposurface If you were to split the surface every time you
needed a path or a roadway, your file size would bloat
The objective of the following procedure is to create a walkway path using the
subregion command
1 Go to the Site plan.
2 Zoom in on the east entry.
3 On the Massing & Site tab, click the Subregion button, as shown in
Figure 18.11
4 On the Draw panel, click the Start-End-Radius-Arc button.
5 Draw a path similar to the one shown in Figure 18.12 (It does not
have to be exact.)
F i g u R e 1 8 1 1 The Subregion button
6 Click Finish Edit Mode.
7 Select the subregion.
8 In the Properties dialog, change Material to Site - Earth.
9 Create another subregion extending to the bottom ramp Use your
imagination
10 Go to a 3D view and compare yours with Figure 18.13.
Trang 5C h a p t e r 1 8 • S i t e a n d To p o g r a p h y
8 0 8
F i g u R e 1 8 1 2 Sketching the subregion
N O T E You cannot cross over and exceed the extents of the original boundary If you do, revit will not allow you to finish the sketch also, this subregion must form a continuous loop with no gaps or overlapping lines You will need a straight line at each end of the path
F i g u R e 1 8 1 3 The sidewalks in 3D
How did you do? If you don’t like the line in the sidewalk, you can simply redo the two separate sidewalks and create just one
Trang 6Not too shabby! There definitely is something missing from this site, though
It sure would be nice to start adding some trees and plantings The great thing
about adding plantings after you have your topography in place is that any site
component added to the model will be hosted by the topography This means
you do not have to determine the elevation
Adding site components
Adding a site component to Revit is no different than adding a desk or a door A
component is a component as far as Revit is concerned As you have learned, a
component is hosted by a system component For example, when you are
insert-ing a window, there needs to be a wall, or Revit will not allow such a foolish
trans-action to occur The same goes for a site component You need dirt to plant a tree!
The objective of this next procedure is to add various trees and plantings to the
Revit model First, however, we need to load some bushes
1 On the Insert tab, click the Load Family button.
2 Scroll to the Planting directory
3 Load every file in the directory.
4 In the Project Browser, go to the Site plan.
5 On the Massing & Site tab, click the Site Component button, as shown
in Figure 18.14
F i g u R e 1 8 1 4 The Site Component button
Trang 7C h a p t e r 1 8 • S i t e a n d To p o g r a p h y
8 1 0
6 In the Change Element Type menu In the Properties dialog, click
Figure 18.15
F i g u R e 1 8 1 5 Adding the shrubs to the walkway
7 Click the Site Component button again.
8 From the Change Element Type menu, select any tree you wish, and
plant it on our little hill
9 Put some shrubs around it.
10 Go to a 3D view and compare it to that shown in Figure 18.16.
Now that we have all the contours and plantings in place, we need to knock out
a small maintenance issue There is a function that will allow you to automati-cally add contour labels to the site This is a great feature in Revit Architecture
Adding contour Properties and Labels
Since nothing in Revit Architecture is “dumb,” we can take advantage of a topo-graphic surface having some “smarts” as well Even the contour lines of a site are smart
Trang 8F i g u R e 1 8 1 6 The trees and shrubs on the hill
N O T E Now that looks simply horrible! Don’t worry When we move to
the next chapter, we will focus on rendering this is where the trees literally
come to life
The objective of this next procedure is to examine some site settings and throw
some labels into the contours It is a quick set of steps, but important nonetheless
To examine the Site Settings, run through the following procedure:
1 Click the arrow in the lower-right corner of the Model Site panel, as
shown in Figure 18.17
2 In the Site Settings dialog, you will see a field that contains additional
contours In the Increment panel, change the value of 1′ 0″ to 6″, as
shown in Figure 18.17
3 Click OK Notice the contours are tighter.
With the contours in place, it is time to label them Luckily there is a
func-tion in Revit that allows you to do it all in one shot All you need to do is draw
a line specifying the alignment of the contours, and let Revit add the labels
automatically
Trang 9C h a p t e r 1 8 • S i t e a n d To p o g r a p h y
8 1 2
F i g u R e 1 8 1 7 Changing the additional contour increment
Follow these steps to add contour labels to the site:
1 On the Massing & Site tab, click the Label Contours button, as shown
in Figure 18.18
F i g u R e 1 8 1 8 The Label Contours button
2 Pick a point to the outside of the toposurface, labeled “1” in Figure 18.19.
3 Pick a second point near the building, labeled “2” in Figure 18.19
After you pick the second point, the contours are labeled
Trang 10F i g u R e 1 8 1 9 Adding the contour labels
With the site in place, it is time to address a situation that has arisen
unbe-knownst to you You see, we never defined any areas where we may not want
earth to “spill into,” such as the basement This will affect every section that we
have We can place a pad to displace the earth in the basement.
Adding Building Pads to displace earth
When you need to displace a volume of earth, you use a tool exclusive to the Massing
& Site tab to do so By placing a building pad into your model, you tell Revit that
you want to cut the earth away from this area while still leaving the earth beneath a
certain elevation For example, if you wanted to remove the earth from the basement
(which we will be doing) but you still needed the earth to exist beneath the
base-ment, you must place a building pad
To place a building pad into the model, follow this procedure:
1 In the Project Browser, go to the T.O Footing plan It is located in the
Structural category
2 On the Massing & Site tab, click the Building Pad button, as shown in
Figure 18.20