Link to YouTube Video : http://www.youtube.com/watch?v=L_X6vuTJYNU
In the past I have written many articles relating to the use of 3D reinforcement within Revit and each time I review the tools Autodesk add a little more functionality. In the Revit Structure 2014 release there are a number of new tools and features to aid the modelling and scheduling or rebar but still very little in the way of real drawing production.
One of the most useful tools is the new Rebar Constraint tool which allows the user to select a bar segment and then constrain it to another target which could be another bar segment or a cover face. This will then remain constrained so that if the section size changes or you increase lengths then the bar will automatically update. Shape codes now have the option not to be influenced by hooks.
Bar diameters can now be quickly visualised with the addition of sub categories for Structural rebar, previously I was using filters to control this so a very welcome addition.
Another improvement is the inclusion of a rebar table which is already formatted for the UK market. However, the same problem still exists with the recognition of bars and the grouping of bar marks.
As usual I have produced a short video outlining some of these improvements and new features. http://www.youtube.com/watch?v=L_X6vuTJYNU
Link to Youtube Video:
As many of you may already have seen, Revit Structure 2013 is now shipping and has a host of new platform features as well as some specific new features to Revit Structure 2013. Rather than create a huge post showcasing all the new features I thought I would break this down into separate sections.
The rebar has been a constant feature that has been updating for the last few years and each step Autodesk get nearer to a full solution for detailing. This release brings new functionality to the following areas:
- Improved snapping and alignment
- Rebar Units
- Area and Path reinforcement (Hosting of Rebar)
- Fabric Reinforcement
Standard mesh reinforcement can now be added to slabs, walls and foundation slabs using a boundary. Revit Structure 2013 will automatically trim the sheets and can give cut lengths and widths for each sheet if required. The bars are modelled in 3D and also are represented in plan with tagging and sectional views. The full UK standards for wire mesh are included within the standard Structure template as well as tags and labels to detail the sheets in plan. Lap lengths can also be set as well as the ability to stagger the sheets or set half way passing.
The path and area reinforcement tools have also had a bit of an overhaul and can now generate 3D rebar. The path option will create bar perpendicular to the path and can use a range tag to detail the bar in a plan view.
Autodesk have also added some improvements to the creation of bar within bends and hooks allowing the snapping to quadrants and 45deg positions.
Link to Youtube Video:
Link to YouTube Tutorial: http://youtu.be/x94SL3sHV-k
The current workflow to reinforce structural elements from Revit to AutoCAD Structural Detailing is currently limited to ‘standard’ objects such as beams, columns etc via the Revit Structure extensions. You may be interested in a process that I have discovered to take any object modelled in Revit Structure and then create the required formwork drawings in AutoCAD Structural Detailing and then add the reinforcement. I have used Revit Structure to model a slab but you could use any solid modelling software to produce your required geometry. Below you can see the drafting view imported into Revit Structure from ASD.
I have started in Revit Structure by creating a slab and then adding a slab edge and an in-place model of a thickening.
I can then save this as an ACIS solid and then import this into ASD (see the YouTube video for details). You will need to Union all of the solids to create a composite model. Type in UNI on the command line and select all the geometry. One this is done you can then select the Use 3D solids command in ASD.
This will then produce the required formwork in ASD and I can proceed to reinforce the slab and take the drawing back into Revit Structure by linking the 2D drawing into a drafting view. This means that if you update the reinforcement in ASD the drafting view will also update in Revit Structure.
Here is the link to the YouTube Tutorial: