Tuesday, July 13, 2010

Reinforcement Extensions - Tie / Shear Link Bends

Have you noticed that when you try to reinforce a column or a beam using the Reinforcement tools in the Extensions Manager, the only options for the hook types for stirrups / ties / shear links are Standard Hook 90 deg, or standard Hook 180 deg?

The actual hook type most people will generally be looking for is a 135 deg hook, to ensure the stirrups actually look like the one in the image above.

The reaosn you cannot see a 135 deg hook is because the extensions only look for the "Standard Hook" type, and not the Stirrup/Tie Hook or Stirrup/Tie Seismic Hook.

The default template that comes with Revit only gives two options for the Standard hook, 90 deg. or 180 deg.

The solution.

Create a new hook type.

In the project browser, right click on the Standard hook, and click duplicate. rename the hook to be Standard Hook - 135 deg. In the type properties for the hook change the angle to 135 degrees, making sure the "style" is set to standard. Save the changes and head back to the extensions to try again.

Sure enough, the 135 deg. Hook type is in the drop down list, making life much easier when rienforcing multiple beams of the same type.

Sunday, July 11, 2010

National Guidelines for Digital Modelling

A set of guidelines for Revit use in the U.K have been developed and documented, The AEC (UK) BIM Standards for Revit Ver 1 and further information, Can be found on the Revit Structure Learning Curve . thanks to Alan Wooldridge, a.k.a Cadalot

This reminds me of a set of guidelines / standards that were developed for the Australasian Region last year as a result of discussions at the Revit Technology Conference .

The National Guidelines for Digital Modelling were developed by representatives from some of the largest Engineering and Construction companies in Australia and the world.

Download the guidelines here .

Friday, July 9, 2010

3D Detailing - for Chris

So, Chris asked for some information on how I use 3D views for detailing steelwork.

Essentially, I have created a wide range of face based plates and cleats, as well as bolts and anchors. The plates and cleats are easy to make, simply an extrusion in the generic model face based family template, with the category set to structural connections.

The addition of parameters to allow flexibility in width, length and thickness make the families easier to work with, and making those parameters shared parameters means I can use the information in the family to annotate the details by adding those same shared parameters into structural connection tags. Hence my call to Autodesk to allow tagging in 3D views in future releases.

The same goes for the bolts and anchors, face based generic model families with the category set to structural connection. A little tricky to build though, a range of extrusions and blends required, with mutliple types nested into the one family.

As far as using this content on a project, I follow a workflow of.

  1. Construct the model - all steelwork, concrete, walls, etc.

  2. Set up structural floor plans.

  3. Cut long sections on every major frame or even every grid line.

  4. Use call outs - usually 1:10 details, maybe 1:5 in some cases to call out every steelwork connection

  5. Begin to add the face based components to build up the connection detail, cutting multiple sections / views through the callout to place plates and bolts in the required positions.

That sums up the creation of the 2D details.

To put that information into a 3D view is simple, create a new 3D view and using the full navigation wheel a.k.a the "steering wheel," to Orient to a specific view.

Right click on the navigation wheel, and click orient to view, this will then show a list of every view in the Revit project from floor plans to detail views. Scroll down the list until you find the 2D view you wish to show in 3D, and click that view.

Revit will automatically adjust the section box in the 3D view to match the clip / crop settings of the 2D detail.

Add the 3D views to your sheets with the 2D details, this will act as a little something to wow the client and assist the contractor.

Chris, I hope that helps.

Revit 3D Detailing - Final Images

As promised, more 3D detailing images.


P.S. Autodesk, are we likely to be able to tag in 3D in the 2012 release...... It has been a wishlist item on AUGI since 2009.

Tuesday, July 6, 2010

Help, I can't find the work plane...!

Have you ever needed to adjust the work plane of an object but are unable to locate the named reference plane the object is hosted on?

Here’s a tip on how to find it.

Note down the name of the reference plane you are trying to find. You can get this from the instance properties of the object you are trying to move, under Constraints > Work Plane.

Create a new reference plane and name that reference plane exactly the same name as the reference plane you are trying to find. You will see the following message The name entered is already in use. Enter a unique name.

Expand the warning and look for the element I.D. Note this down.

The final step is to search for the element by its element I.D. You can do this under the modify tab, Element ID > Select by ID

Enter the I.D Number you noted down earlier, this will select the reference plane you are trying to find. Right click, and click Maximize 3D Extents

This will maximize the extent of the reference plane so it is visible in all views.

3D Detailing - Images

As noted in earlier posts, the images I uploaded were low resolution, I was struggling to upload high resolution images.

The error message I was seeing said "image upload failed due to internal error," it appears any image I create using my 64-bit Windows 7 machine, will not upload to the blog....

In the mean time, I have started to create images using a Windows XP machine, and will add more shortly.

For now, enjoy the image below.