Loading...
Reload document 
Open in new tab
- Titre : 978-1-63057-200-6-7.pdf
- Submitted by : Anonymous
- Description : Revit 2019 Structure Fundamentals Autodesk ® ® SDC PUBLICATIONS www.SDCpublications.com Better Textbooks. Lower Prices.
Transcription
®
®
Autodesk
Revit 2019 Structure
Fundamentals
SDC
P U B L I C A T I O N S
Better Textbooks. Lower Prices.
www.SDCpublications.com
Visit the following websites to learn more about this book:
Powered by TCPDF (www.tcpdf.org)
C h a p t e r
Structural Framing
The skeleton of a building is its structural framing. Together, elements such as
columns, beams, bracing, and trusses give buildings the stability they need. While
the basic process of adding these elements to the project is simple, you also need
to complete more complex tasks, such as manipulating connections (by setting
bearing offsets, cantilevers, cut backs, and justifications), applying beam coping,
and editing beam joins.
Learning Objectives in this Chapter
• Sketch individual beams for girders connecting columns and structural walls.
• Create Beam Systems of multiple similar sized beams spaced at equal intervals to speed up
adding joists.
• Add Bracing to support the integrity of other framing members.
• Make changes to framing members so that the connections fit the exact situation.
• Add trusses to support long spans of open space.
© 2018, ASCENT – Center for Technical Knowledge®
7–1
Autodesk Revit 2019 Structure Fundamentals
7.1 Modeling Structural Framing
The Autodesk® Revit® software enables you to frame a building
with wood, concrete, and steel framing and bracing, such as the
steel example shown in Figure 7–1. You can add individual
beams, as well as beam systems and bracing elements.
Figure 7–1
Framing types include: Concrete, Light Gauge Steel,
Precast Concrete, Steel, and Wood.
In views set to a Coarse detail level, the software assigns a
lineweight to the structural members based on their structural
usage. For example, a Girder displays in a heavier lineweight
than a Joist, while a Purlin displays with a dashed line. as
shown in Figure 7–2.
•
•
Girder
Joist
Purlin
Figure 7–2
7–2
© 2018, ASCENT – Center for Technical Knowledge®
Structural Framing
How To: Add Beams
1.
2.
3.
In the Structure tab>Structure panel, click
In the Type Selector, select a beam type.
In the Options Bar, specify the options, as shown in
Figure 7–3 and described below.
(Beam).
Figure 7–3
• Placement Plane: Defaults to the current level if you are in
a plan view but can be modified to other levels.
• Structural Usage: Select a type (as shown in Figure 7–3),
•
or accept the default of
3D Snapping: Select this if you want to draw a beam
from one point to another at different heights.
• Chain: Select this if you want to draw a series of beams in
a row. To stay in the command and start another chain,
press
4. For automatic tagging, in the Modify | Place Beam tab>Tag
5.
(Tag on Placement).
panel, click
In the Modify | Place Beam tab>Draw panel, use the Draw
tools to draw the beams.
How To: Add Multiple Beams on Grid Lines
1. Start the Beam command and specify the type and other
options, as outlined above.
2.
In the Modify | Place Beam tab>Multiple panel, click
Grids).
(On
© 2018, ASCENT – Center for Technical Knowledge®
7–3
Autodesk Revit 2019 Structure Fundamentals
3. Select the grids where you want to locate the beams. A beam
is placed between each grid intersection, as shown in
Figure 7–4. Hold
pick and drag window to select multiple grids at one time.
Columns must be in
place to support the
beams for this to work.
4.
In the Modify | Place Beam>On Grid Line tab>Multiple panel,
Figure 7–4
click
(Finish).
• Sometimes this can be the quickest way to add beams. If you
need to use various sizes of beams, when you are finished,
select those beams and make any changes in the Type
Selector.
Beam Systems are layouts of parallel beams placed between
other beams, as shown in Figure 7–5. Typically used in joist
layouts, beam systems can be set up to use either a fixed
distance or number of beams.
• Beam systems can be created automatically with sufficient
bounding elements (other beams). You can also sketch the
boundary for a beam system.
Beam Systems
7–4
© 2018, ASCENT – Center for Technical Knowledge®
Figure 7–5
Structural Framing
How To: Add Automatic Beam Systems
1.
In the Structure tab>Structure panel, click
System) or type BS.
(Beam
2. The Modify | Place Structural Beam System tab>Beam
System panel, click
(Automatic Beam System).
3. When
(Tag on Placement) is selected, in the Options
Bar, set the Tag Style as shown in Figure 7–6.
• Framing: Tags each individual member.
• System: Places one tag for the entire framing system.
4.
In the Options Bar (shown in Figure 7–7), set the Beam Type,
Justification, and Layout Rule.
Figure 7–6
Figure 7–7
• The Layout Rules include: Clear Spacing, Fixed
Distance, Fixed Number, and Maximum Spacing. Set
the required distance or number.
• Make changes in Properties or in the Options Bar as
required to establish the required beam system.
© 2018, ASCENT – Center for Technical Knowledge®
7–5
Autodesk Revit 2019 Structure Fundamentals
5. Move the cursor over an existing beam until the guide lines
display in the correct area and direction, as shown vertically
and horizontally in Figure 7–8. This can also identify angled
lines.
Figure 7–8
6. Select the existing beam to place the system.
7. Repeat this step in other bays as required.
• The Beam System is one uniform group. You can change
beam’s type, spacing, and elevation in Properties or in the
Options Bar.
•
•
If a grid line is moved, the beams automatically space
themselves. If the bay increases beyond the minimum
spacing, a beam is added. If the bay shrinks below the
allowable spacing, a beam is removed.
If you need to change the system to individual beams, in the
Modify | Structural Beam Systems tab>Beam System panel,
click
remain but are no longer grouped together.
(Remove Beam System). The individual beams
7–6
© 2018, ASCENT – Center for Technical Knowledge®