Autodesk Revit Architecture 2011 No Experience Required - part 32 pot

Now you can… add a floor to your model by using the building’s footprint as a guide E E by picking the walls and by drawing lines add additional floors to higher levels by using the Copy

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F i g u R e 6 5 8 The completed shafts as seen in 3D

Are You experienced?

Now you can…

add a floor to your model by using the building’s footprint as a guide E

E

by picking the walls and by drawing lines add additional floors to higher levels by using the Copy/paste aligned E

E method of quickly repeating the geometry up through the building add a specific, alternate material to different parts of the floor by E

E using the Split Face command in conjunction with the paint materials function

split a floor into segments, and add additional points to set a negative E

E elevation for pitching to floor drains create a shaft opening that will cut out any new floor slab You also E

E can use symbolic lines within the opening to indicate that there is an opening within the shaft

Roofs come in all shapes and sizes Given the nature of roofs, there is a lot to think about when you place a roof onto your building If it is a flat roof, pitch is definitely a consideration Drainage to roof drains or scuppers is another con-sideration as well But how about pitched roofs? Now we are in an entirely new realm of options, pitches, slopes, and everything else you can throw at a roof design Also, there are always dormers that no pitched roof can live without! Do the dormers align with the eaves, or are they set back from the building?

placing roofs by footprint





Creating a sloping roof





roofs by extrusion





adding a roof dormer





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Placing Roofs by Footprint

This book can’t address every situation you will encounter with a roof system, but

it will expose you to the tools needed to tackle these situations yourself The tech-niques we will employ in this chapter start with the concept of adding a roof to the model by using the actual floor plan footprint As with floors, we will also build the roof’s composition for use in schedules, quantities, and material takeoffs

The command you’ll probably use most often when working with roofs is the one

to place a roof by footprint Essentially, we will create a roof by using the outline

of the building in plan view There are three roof types you can place by using a footprint:

A flat roof (OK, no roof is actually flat, but you get the point)





A gable roof where two sides are sloped and the ends are left open





A hip roof where all sides are sloped





You have only these options while placing a roof by footprint because you are looking at the roof in plan, which limits your ability to place a roof with nonuni-form geometry Later in the book, we will explore doing just that, but for now let’s start with placing a flat roof using the footprint of the east wing

Flat Roofs by Footprint

To begin, open the file you have been following along with If you did not

com-plete the previous chapter, go to the book’s web page at www.sybex.com/go/

revit2011ner From there you can browse to Chapter 7 and find the file called

NER-22.rvt The objective of this procedure is to create a flat roof by outlining the building’s geometry in the plan:

1 In the Project Browser, double-click on the Roof view in the Floor

Plans section (be careful not to click on Roof in the Ceiling plans)

2 Zoom in to the east wing.

3 Type VP to access the View Properties dialog.

4 Find the Underlay row and select None from the menu, as shown in

Figure 7.1

5 Click Apply.

6 On the Home tab, click Roof ➢ Roof By Footprint, as shown in Figure 7.2.

F i g u R e 7 1 Changing the view’s Underlay to None

7 On the Modify | Create Roof Footprint tab, be sure the Pick Walls

but-ton on the Draw panel is checked, as shown at the top of Figure 7.3

8 On the Options bar, uncheck Defines Slope, as shown in Figure 7.3.

F i g u R e 7 2 Clicking Roof By Footprint on the Home tab of the Design bar

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9 In the Options bar, make sure the overhang is set to 0′ 0″

10 Uncheck Extend Into Wall Core (if it is checked).

11 Hover your pointer over the leftmost vertical wall Notice that it becomes

highlighted When you see the wall highlight, press the Tab key on your keyboard Notice that all the perimeter walls highlight When they do, pick (left-click) anywhere along the wall This will place a magenta sketch line at the perimeter of the building (see Figure 7.3)

F i g u R e 7 3 Adding a sketch line to the perimeter of the building by

highlighting one wall and pressing Tab

12 On the Modify | Create Roof Footprint tab, click Finish Edit Mode.

13 Go to a 3D view, as shown in Figure 7.4

With the roof added, step 1 is out of the way Now we need to create a roof system You will do this the same way you created your floor system in Chapter 6, “Floors.”

F i g u R e 7 4 The roof has been added We still have a lot of work to do, though.

creating a Flat Roof system

Although you can use this system for a pitched roof, the steps for a flat roof

sys-tem differ slightly In Revit Architecture, there are two ways to look at a roofing

system One way is to create it using all of the typical roof materials and to create

a large space for the structural framing In this book I do not recommend that

approach Creating a roof using only the roofing components is necessary, but

adding the structure will lead to conflicts when the actual structural model is

linked with the architectural model Also, it is hard for the architect to guess what

the depth of the structural framing will be In Revit, you want each component to

be as literal and as true to the model as possible The second way to look at a

roof-ing system, as we are about to explore, is to build the roof in a literal sense—that

is, to create the roof as it would sit on the structural framing by others

The objective of this procedure is to create a roof system by adding layers of

materials:

1 Select the roof (If you are having trouble selecting the roof, remember

the Filter tool.)

2 On the Modify | Roofs tab, click the Type Properties button.

3 Click Duplicate.

4 Call the new roof system 4″ Insulated Concrete Roof.

5 Click OK.

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6 Click the Edit button in the Structure row.

7 Change the material of Structure 1 to Concrete - Cast-in-Place

Lightweight Concrete (You do this by clicking in the cell and by clicking the […] button You can then select the material from the menu.) Once the material is selected, click OK

8 Change Structure Thickness to 4″ (see Figure 7.5)

9 Insert a new layer above the core boundary (You do this by

click-ing on the number on the left side of the Core Boundary row, and clicking the Insert button below the Layers section, as shown in Figure 7.5.)

10 Change the function of the new layer to Thermal/Air Layer [3].

11 Click in the Material cell.

12 Click the […] button to open the Materials dialog.

13 Select Insulation / Thermal Barriers - Rigid Insulation for the

material

14 Click OK.

15 Change Thickness to 4″

16 Click the Variable button When we modify the roof, this insulation

layer will warp, allowing us to specify roof drain locations

17 Insert a new layer above the Insulation.

18 Give it a Function of Finish 1 [4].

19 Select Roofing - EPDM Membrane.

20 Click OK.

21 Change Thickness to 1/4″ (see Figure 7.5)

22 Click OK.

23 Click OK again to get back to the model.

24 Press Esc.

Phew! That was a long procedure It was worth it, though You will be using this process a lot in Revit Architecture

For the next procedure, we will add some roof drain locations, and then taper the insulation to drain to these locations

F i g u R e 7 5 The complete roof system

ta k e a lo o k

It is always a good idea to keep the preview window open when you modify

the roof system If you look toward the bottom of the Edit Assembly dialog,

you will see a preview button, as shown in the following illustration Click

it, and you can see the roof as it is being constructed

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tapering a Flat Roof and Adding drains

If you went through the floor procedure in Chapter 6, you will see that the pro-cess for tapering a roof is similar to pitching a floor You may have also noticed that creating a roof system is identical to creating a floor system

To taper the roof insulation, you must first divide the roof into peaks and valleys, and then specify the drain locations based on the centering of these locations:

1 In the Project Browser, make sure you are in the Roof floor plan.

2 Select the roof (You may have to use the Filter tool here.)

T I P even when you do successfully select the roof, you may not be able to tell The roof doesn’t seem to highlight When you have the roof selected, the Options bar will show the Modify icons Also, look in the top of the Properties dialog box—it should read Basic roof : 4″ Insulated Concrete roof

3 With the roof selected, select the Create Split Lines button shown in

Figure 7.6

4 Draw a line from the points shown in Figure 7.6.

5 Press Esc.

6 Select the roof.

T I P One really nice thing about modifying the roof is now, to select the roof, all you need to do is pick one of the ridgelines and the roof is selected

7 To activate the points in the roof, click the Modify Sub Elements

but-ton, as shown in Figure 7.7 This will allow you to modify the points you have picked already

8 Click the Add Point button, as shown near the top of Figure 7.8.

9 Add two points at the midpoints marked as “1” and “2” in Figure 7.8.

10 Click the Add Split Line button and draw a ridge across the entire

length of the building from point 1 to point 2, as shown in Figure 7.9

11 Press Esc twice; then, on the Home tab, click Ref Plane as shown at

the top right of Figure 7.10

12 Draw four reference planes spaced approximately the same as in

Figure 7.10

F i g u R e 7 6 Start splitting the radial portion of the roof.

F i g u R e 7 7 Click the Modify Sub Elements button to activate the points in

the subassembly of the roof.