Revit 2019 Tutorial Part 1 – Adding Vertical Bracing Systems

I still find many people asking what the best methods are for adding bracing to steel models, some are still using beams to try and model bracing, others still get into a bit of a mess with vertical bracing, more struggle with the representation on drawings.

I thought it was about time I created a tutorial on this subject, covering both horizontal and vertical bracing as well as some typical connections for adding those all-important details.

So first we need to look at some of the basics. In the images below, you can see Vertical, Horizontal and Roof Bracing.

Revit Bracing Examples

Creating Vertical Bracing

When creating vertical bracing it is best to create a framing elevation. The framing elevation creates an elevation on the frame a few hundred millimetres deep and sets a working plane for the bracing.

Framing Elevation

You must use the dedicated brace command to efficiently add bracing.

Bracing

You can roughly sketch the bracing that you require and then use the Properties Palette to fine tune the exact location of the bracing.

In the example below, you can see some vertical X-bracing, note that the start and end attachments are attached to the correct levels and you also have the option of adding offsets from each of these levels.

Vertical Bracing with PropertiesIn this example we have used Equal Angle to create the bracing. Both angles are in the same plane and hence clash.

This can easily be resolved by using the y Offset Value on each member. The analytical line remains centred, but the physical elements will be located correctly.

Offset Bracing in the Y Axis

The bracing is automatically represented in a plan view and can be tagged. The standard in the UK is to show a parallel line on the outside for bracing above and a parallel line on the inside for bracing below.

Plan Bracing

You can control the type of representation and spacing in the Structural Settings dialog box.

Structural Settings Bracing

Finally, if you want to tidy up the bracing and make the drawings look a little better you can either use 2D detail components to represent a connection or use the connection tools to add 3D connections.

Revit 2D and 3D Bracing

LawrenceH

Revit Structure 2014 Beams & Braces – Geometric Positions

In a previous post I outlined a procedure and method of offsetting beams both in the horizontal and vertical planes whilst leaving the analytical model unaffected. In the new Revit 2014 release Autodesk have included some interesting new tools to control these offsets more effectively. Of particular interest is the new behavior of roof bracing.

2013-2014 properties

In Revit 2014 these new tools are grouped under the Geometric Position section on the properties ribbon. You can see that these positions relate to the Y and Z axis. To understand this, refer to the image showing the plan view of a beam.

Beam - Plan View

The key thing to remember is that the Y axis is the offset in plan and the Z is the offset in the vertical direction.

The offsets can either be uniform or independent. For most examples you will likely want to keep a uniform offset but I have found that the independent offset is really useful for offsetting bracing on roof members of differing depths. Notice the below image and the offset of 76mm on the end offset value to maintain a horizontal position for the CHS bracing. At last, a workable solution!

BRACING OFFSET

Anyway, have a play with these new tools, I am sure they will help you all.

LawrenceH

 

Revit Structure Bracing

I have recently found a good way of representing bracing in a horizontal and vertical course view. You may have found that when viewing your horizontal/roof structural bracing in a plan view you see the following offset symbolic views:

The bracing has an offset due to the Brace symbols settings. This needs to be set in order to show vertical bracing with an offset as shown in the above image on BR1. The horizontal bracing also has the offset which does not look so good! The offset is set within the Structural Settings Dialog box as shown below.

 A simple fix for the horizontal bracing is to set the structural usage to kicker bracing. This sets the symbolic line to centre. The Object Style will also need to be set to show the Kicker Bracing as a dashed line and you will also need to delete the cross symbol in the M_Connection-Brace-Kicker family file.

You will then see the following detail below.

Hope this helps,

LawrenceH