What's New in Revit 2027 - Part 2

by Dennis Collin

This post is the second part outlining key new features and improvements to Autodesk Revit 2027. In part 1, I outlined changes and improvements within Revit’s core and architectural functions. In this document I will highlight improvements and changes with the Structural and MEP engineering functions.

3D Path Rebar Shape Distribution

Revit 2027 delivers significant advancements in concrete reinforcement modelling, particularly for complex geometry. A major highlight is the new 3D Path Rebar Shape Distribution, which enables transverse rebar to be modelled along complex, double‑curved concrete elements such as bridges and tunnels. Identical rebar shapes can now be distributed along a 3D path defined by host edges, while maintaining precise bar geometry and dimensions in section.

The workflow is streamlined into a simple two‑step process: place the primary bar in plan or section, then select the host edge to define the distribution path. Each bar is created as an individual rebar set with consistent properties, remaining aligned to the path and automatically adapting to host geometry changes. Designers can edit bar shapes, adjust ranges using path handles, control start and end offsets, apply custom spacing formulas, propagate reinforcement, and split path-based sets, significantly improving accuracy, consistency, and productivity for curved slabs, walls, and complex concrete elements.

Rebar Spacing and Layout Control

Additional enhancements improve rebar spacing and layout control. Formula‑based custom spacing allows multiple fixed, variable, or proportional spacings to be defined within a single rebar set. A placeholder character, “?” can be used to preserve exact spacings while Revit automatically resolves the remaining distance. Spacing formulas are easily managed through the Properties palette, rebar sets can be flipped to control layout direction, and multiple spacings are clearly reported using the Spacing Summary parameter in tags and schedules—resulting in clearer documentation and greater detailing flexibility.

Longitudinal Bars Driven by Transverse Rebar

With Revit 2027 It is now possible to create longitudinal reinforcement directly from existing transverse rebar, enabling faster and more consistent reinforcement detailing. By selecting stirrups, spirals, or multi-segment transverse rebar sets, a coordinated longitudinal bar set can be generated that automatically follows the transverse geometry and updates dynamically as it changes. This capability supports both civil infrastructure models, such as bridges and tunnels, and typical building elements, accommodating simple to complex concrete forms. Longitudinal bars can be placed by selecting entire transverse sets or individual segments, adjusted using handles and constraints, and defined using fixed, maximum, or custom spacing layouts to ensure precise and coordinated reinforcement design.

Reinforcement Mass Property

Reinforcement mass is now automatically calculated and displayed within the bar properties and can be accessed in schedule views and tags.

The mass is an instance property calculated by the total bar length being multiplied by the mass bar unit length value. The bar mass per unit length value is a type parameter with a default value that can be edited from the rebar type properties.

Longitudinal Free Form Rebar Splicing

Some improved free form rebar splicing tools have been added to aid the detailing of rebar for bridge and tunnel models.

These enhancements include to add straight parametric splicing along select lines. An ability to select which bars are visible. New splice lines are placed perpendicular to the bar that is hovered over by the screen cursor. It is possible to splice individual bars or entire rebar sets, with options to stagger the splice with an offset value. Spliced bars remain aligned and move together when edited. These splice connections are editable and when the splice is removed the bars join back.

New Concrete Detailing Ribbon

A new Concrete Detailing tab on the ribbon menu centralizes all the reinforcement tools for cast-in-place and precast workflows, these tools have been relocated from the Structure tab, however reinforcement options will still be available on the context tab menus when an element is selected. The display of these ribbons can still be customised via Revit’s Options menu.

Consistent Steel Shape Behaviour

As well as improvements to the detailing of concrete formwork. Steel detailing has been improved with the environment being updated such that steel detailing components behave more predictably throughout. Members with void cuts now work with Steel Connections and modifiers. These elements have consistent parameters, graphics and editing controls.

Coping can be applied with extensions adjusted with in-canvas controls and will display consistently with the hidden line visual style. Steel framing and column families show the same parameters at both design and fabrication detail levels.

Analytical Modelling Enhancements

Analytical Modelling has been improved with Analytical Panel Automation using Physical Core Layer Thickness from the model elements. There have also been improvements to the control of how an analytical node behaves. Identify the position of load and boundary conditions using temporary dimensions.

The analytical model can be set to automatically update to reflect changes in the physical model, including any updates to openings.

Tools now include a disconnect option which permits the continuation of editing whilst maintaining the analytical panel’s geometric constraints. These edits can be completed with when panels are temporarily unsupported and will behave in a more logical and predictable manner.

Analytical Panels can be split using other elements such as lines, levels, grids, edges of analytical or physical elements. Existing loads or boundary conditions will automatically re-host to the newly created panels.

Panels can also be designated as cladding permitting them to host or transfer lateral loads such as wind or snow. This provides a more accurate representation of non-structural elements that participate in load paths with over constraining the primary analytical model.

Improved Heating and Cooling Loads

For MEP users there has been improvements to the heating and cooling loads analysis environment. Which uses the new system zone elements for calculations.

Improved MEP Parts Editing

Part editing and documentation for MEP fabrication parts have also been enhanced as it is now possible to edit sems, airturns and stiffeners for fabrication parts with the edit parts environment. It is also possible to change the number of segments for segmented elbow fittings.

Additional built-in parameters are now available for fabrication parts including:

• Fabrication Service Abbreviation
• Part Pattern Number
• Material Weight
• Duct Weight
• Volume
• Handle Position

There are also a few issues that are of interest with the removal of the Revit Viewer function from Revit 2027 onwards. Viewer mode will continue to be available for Revit 2026 and previous versions.

The reason for this change is licensing and security concerns with using this feature with 2027 files. The recommended alternatives are to use either:

• Autodesk Viewer for browser-based model viewing and sharing.
• Shared Views for easy, controlled collaboration directly from Revit
• Autodesk Forma as one AI-native industry cloud, boosting creativity, strengthening collaboration, and driving smarter project outcomes.

Revit 2027 does come with many new features for Architecture and Structures. However, it does seem ‘a little light’ on benefits for MEP users. Schematic views, trunking, cabling and improved switching and circuiting are features that users have been asking for on the Revit Ideas forum for some years. There are however, many improvements in the Core areas of Revit such as tagging and AI automation which will be of benefit to MEP users. However Revit often has a point release update later in the year, which will bring to users the improvements that they need. Revit’s roadmap indicates many improvements on the horizon, including the harmonization of Fabrication Part and Design behaviours, improved detailing of ductwork, schematic views, and better interoperability with products such as AutoCAD Plant 3D. Hopefully these features will be worth the wait!