InterferenceInvestigator: Interference Management in Revit

Overview

InterferenceInvestigator is an Autodesk Revit add-in from underbim, a Portugal-based BIM consultancy with experience in BIM, Revit training, consulting, and software development since 2001. It is one of eight add-ins in ub.Suite Edition 1, released in late October 2026, and can be purchased individually or as part of the suite. underbim summarizes its purpose as “See the clash. Understand the pair.” The add-in focuses on the work after interference detection: moving from an interference result to the exact host and linked elements involved, locating them in the Revit model, recovering enough surrounding context to understand the problem, tracking a review state for each occurrence, and turning the investigation into an actionable result. Reviewed results can become a native Revit schedule, a .ubr result package, or input to ModelData.

This summary is based primarily on the text of the official InterferenceInvestigator product page, supplemented by the ModelData and FilterToSchedule product pages, underbim’s website and suite announcement, and Autodesk documentation on the native Interference Check. The product page is marketing material: several feature areas are described in detail, while others are only named. No user guide, independent review, or hands-on testing was available, so the remaining gaps are listed as open questions rather than filled with assumptions.

Core Concept: A Clash Becomes Useful When You Can Investigate It

underbim states that InterferenceInvestigator is “built for the work after detection”: identifying the pair, reaching the actual elements, understanding their model context, and deciding what needs to happen next. The product page frames this as four stages:

• Result: a structured interference set.
• Pair: host and linked participants with their identities.
• Context: select, isolate, and Focus 5%.
• Continue: schedule, .ubr, or ModelData.

The page’s coordination-workflow graphic illustrates a pair consisting of a host structural beam and a linked service element, labeled “Status · Open,” following a path of pair → model → context.

SVS Clash Guard: Clash Detection and Clearance Checking Inside Revit

Summary

SVS Clash Guard is a Revit add-in from SVS Tools/SVS Team that brings clash detection and clearance checking directly into Autodesk Revit. Public SVS material describes it as a Navisworks-style coordination tool for native Revit workflows, intended to help users detect model conflicts, review hard and soft clashes, track issue status, and navigate directly to problem areas without exporting heavy models to a separate coordination application.

Primary Purpose

The add-in is designed to reduce the friction of traditional clash-detection workflows by keeping coordination review inside Revit. Standard BIM coordination often depends on exporting models to Navisworks or reviewing cloud-based clash issues through Autodesk Construction Cloud. SVS Clash Guard is positioned as an in-line Revit alternative for faster internal checks, early discipline coordination, and iterative design review before formal model federation or coordination meetings.

In-Revit Clash Detection

SVS describes Clash Guard as having an in-Revit real-time clash engine that can detect physical collisions and clearance-based tolerance violations without requiring model export. This makes it useful for quick checks during active modeling, especially when a team wants to identify conflicts before issuing a coordination model or running a full Navisworks clash test.

Hard Clashes and Soft Clearance Checks

The tool is described as supporting both hard collision detection and soft clearance tolerance checking. Hard clashes identify elements that physically intersect, such as a duct passing through a beam. Soft clashes identify elements that may not touch but violate required clearance space, such as maintenance access, service clearance, or coordination offsets. This distinction is important because many BIM coordination issues are not true geometry intersections but still represent constructability, access, or maintenance problems.

Free Eazy Struct: Coordination Accelerator for Concrete-Heavy Architectural/Structural Workflows

Summary

A coordination-focused Revit add-in for detecting concrete model mismatches, managing openings, and improving architect-structure communication.

Overview

Eazy Struct is an Autodesk Revit add-in designed to improve coordination between architectural and structural models, with a particular emphasis on concrete elements and opening coordination. The tool focuses on identifying mismatches between linked models, helping teams resolve issues directly inside Revit instead of relying on external clash-detection workflows or manual model review.

Based on available online information, Eazy Struct is positioned as a practical coordination utility for BIM coordinators, structural engineers, architects, and MEP teams who need to reduce field surprises, improve accountability, and speed up issue resolution during design coordination.

Primary Purpose

The main purpose of Eazy Struct is to automate concrete coordination checks between architectural and structural Revit models. Instead of asking users to visually compare walls, floors, beams, columns, openings, and related linked-model elements, the add-in calculates conflicts, classifies coordination conditions, and gives users tools to navigate directly to the affected geometry.

In practice, the add-in attempts to close one of the common gaps in Revit coordination: the difference between model ownership and physical constructability. Architectural, structural, and MEP teams can each model elements correctly within their own discipline, but coordination issues still occur when the linked models do not align. Eazy Struct provides a Revit-native workflow for detecting and communicating those issues.

Ostacolo: Clash Detection & Tracking in Revit

Summary

OSTACOLO is an Autodesk Revit add-in designed to manage clash detection, tracking, and resolution directly inside the Revit environment. Instead of relying entirely on external coordination platforms and repeated export/import workflows, OSTACOLO keeps clash identification and issue management within the active project model. It stores clash data persistently in the Revit file using Extensible Storage while also maintaining a structured JSON database for sharing and offline coordination.

Core Purpose

The primary purpose of OSTACOLO is to turn clash coordination into an in-model workflow. Traditional clash detection often requires moving data between Revit and separate coordination applications, which can create extra steps, disconnected issue records, and coordination overhead. OSTACOLO addresses this by detecting clashes, placing visual markers, storing issue data, and managing clash status changes without requiring users to leave Revit.

Detection Protocols

OSTACOLO detects geometric conflicts using five configurable discipline protocols. These include Structural vs MEP, Architecture RC versus Structural and MEP, Architecture WD versus Structural and MEP, MEP Internal, and a combined All protocol. This structure allows users to target specific coordination scenarios rather than running only broad, unfocused clash tests.

The Architecture RC protocol focuses on roof, floor, and ceiling elements, while the Architecture WD protocol focuses on windows and doors. MEP Internal checks conflicts within MEP disciplines, and the All protocol provides a broader combined coordination review. Each protocol can be configured to suit the coordination goals of the project team.

Hard Clash and Clearance Modes

Each detection protocol supports two clash modes. Hard Clash mode identifies physical intersections between element solids, flagging situations where elements overlap in the model. Clearance mode identifies elements that do not intersect but fall within a user-defined minimum distance, measured in millimetres. This allows teams to detect both direct conflicts and spacing violations that may affect constructability, maintenance access, code compliance, or coordination requirements.

PARS-BIM: MEP Tools

From the Autodesk Design and Make Marketplace:

Common Tools (Included in all versions)

• View & Template: Bulk duplicate views and easily import/export templates between projects.
• Sheet Automation: Batch-create sheets from Excel, auto-renumber, and manage sheet organization.
• Family Placement: Automatically place families onto CAD blocks, native, or linked ceilings.
• Selection & Filtering: Isolate elements via custom rules, group by level, and auto-generate V/G filters.
• Clash Coordination: Sync Navisworks reports or review internal clashes with direct 3D jump-to-clash navigation.
• Annotation & Data: Automate element marking, sync parameters, batch-tag, and clean up schematic line crosses.

MEP Tools (Exclusive)

• Routing & Automation: Model parallel pipes/conduits with spacing, convert 2D CAD lines to 3D pipes, and automate flexible transitions.
• Crossing Engine: Instantly bypass obstacles using 4 custom vertical routing methods (Single or Multi-elements).
• MEP Alignment & Connections: Match elevations/horizontal spacing, align systems in 3D, and connect branches at 45°/90° angles without leaving 3D views.
• MEP Assistant Utilities: Fix "Undefined" system type bugs, auto-add flanges/accessories to open ends, control pipe spacing, and access rapid Edit tools (Rotate/Extend/Elbow/Disconnect).

BIM Model Rule Checker

From the Autodesk App Store:

Description

BIM Model Rule Checker is an Autodesk® Revit® plugin that allows users to automatically run rule checks on their Revit models and instantaneously displays results with errors. A wide variety of custom rules can be checked with the automation feature which includes Pipe slope checks, Workset rules, Mounted element checks and Clash detection rules. This customized plugin on Revit will automatically check your Revit models based on a set of checks and generate a compliance report. Model rule checker provides a separate window for each rule and showcases all CSV format results for easy operability. Several pre-built and pretested check sets are already included for you to use immediately or customize. The model rule checker also supports rule checking for the linked models by fetching models from Autodesk® BIM 360® by allowing the batch run feature for all available BIM 360 files as well as local files.

Some of the popular rules on the BIM Model Rule Checker includes:

• Pipe Slope Checks: This allows users to check the slope for any selected piping systems. Users can add, edit or delete slope rules along with the option to add some tolerance that can be ignored.

Free Clash Navigator

From the Autodesk App Store:

Description

Clash Navigator is a free Autodesk® Revit® plugin that helps you manage the process of reviewing and resolving clashes detected by Autodesk® Navisworks®.

Main Features:

• View Clash Report created by Navisworks and navigate clashes inside Revit UI.
• Select clash items.
• Focus on and isolate clash elements in view.
• Create section box “Clash Box” of custom size at the clash location.
• Model clash points to help identify the point in view.
• Show/Hide clash images created by Navisworks
• Manage the status of each clash result.
• Status summary for clashes of each Test and for clash report Tests.
• Manage display units of the report data.

Select one clash element

SwitchBackClash

From the Autodesk App Store:

Description

This application allows Autodesk® Revit® users to view clashes created by Autodesk® Navisworks® in Revit by doing the following steps:

1. Select button SwitchBackClash to trigger the application
2. Browser to the XML clash report exported from Navisworks
3. Select the family that will be placed in the Revit model at clash points. You can load the default family by clicking the Load Family button or you can use your own family
4. Define family parameters that you want to write clash information
5. Click OK

Automatic Clash Solver for MEP and MEP Up and Down

From the Autodesk App Store:

This tool is designed to automatically solve the clashes between the MEP elements.

Usually, users spend a lot of time solving the clashes between Pipes, Conduits, Cable Trays and Ducts.

This tool will automatically solve these clashes depending on an accurate setting to define the offset, angle, and distance of the newly created elements which will solve the clash.

In the predefined settings , you can set which links and categories you need to clash with.

NavisClashNav – Navigate Clash Reports Generated by Navisworks Inside Revit

From the Autodesk App Store:

Navigate clash reports generated by Autodesk® Navisworks Manage® inside Autodesk® Revit®. This tool does not require Navisworks to be installed in order to work.

NavisClashNav imports Navisworks clash reports (text format) and convert them into a spreadsheet compatible manager, with clash previews. Dynamically link to clash elements, similar to Switchback, but without the need for Navisworks Manage.

Dynamic linking using a Navisworks Manage Clash Report in Revit

Navisworks to Google Cardboard: How to View Clashes in VR

From the IrisVR website:

Posted by Leah Kovach on Dec 20, 2018 4:53:30 PM

Virtual reality has become an invaluable tool for VDC and pre-construction teams because it allows you to review spaces - and clashes - in true 1:1 scale. But it’s equally important to document what’s found during these meetings so that everyone is on the same page when the meeting ends.

This Navisworks to VR workflow allows you to run visual clash detection via Navisworks Clash Detective, view those clashes in VR, create 360-degree panoramas to document those clashes, and then review and share those clashes using a Google Cardboard. After you’ve reviewed clashes, the panorama serves as an easily accessible record of the clash.

BIM Track™ v1.20.0 – Featuring New Project Dashboard

From the BIM Track website:

Introducing project dashboard: personalized issue metrics and activity timeline

June 6, 2018

With last night’s release, we have introduced a major new feature to make BIM Track task management even easier for individual users: project dashboard. Project dashboard gives you a project-specific look at what affects your issues as an individual user. It will be the first thing you check when you log in, with an activity timeline that shows all activities that are relevant to you. It also includes metrics to quickly see how many of your issues are past due and much more. Check out our short video below, scroll down to learn more or visit your web platform, click “Dashboard” from your Project menu on the left-hand side, and start exploring.

Free iFBIM CVP SYNC – Sync Clashes and Viewpoints Between Navisworks Manage and iFieldSmart

From the registration website:

This iFBIM CVP SYNC Plugin allows you to export and import clashes and viewpoints data from iFieldSmart platform.

To use this plugin, you need an  “iFieldSmart” account.

For more details about an “iFieldSmart” account, please send an e-mail to info@ifieldsmart.com, and we will get back to you within a day.

You can find the Plugin in Navisworks "Tool Add-ins -> IFBIM CVP SYNC”
It's totally free app and you can download from Autodesk App Store.

Ribbon Tab

RAAPSII – A Free Tool Suite

From the Autodesk App Store:

This application contains the following apps:

• Files Upgrader:
• Easily upgrade your Autodesk® Revit® Files old version to the current version.

Revit Files upgrader

CaManSys Clash Management Suite v3.0.0.0 for Navisworks Manage

From the Autodesk App Store:

About This Version

Version 3.0.0.0, 3/14/2018

• New Features
• Performance Enhancements
• Disable Clash Isolation
• Clash Isolation can now be completely disabled.
• Load xrefs automatically, or on demand
• Xrefs can be loaded and unloaded for specific clashes
• Useability Enhancements
• Test File Names against model naming convention format
• Improved support for Imperial models

Revizto v4.6

From the Revizto website:

Revizto 4.6 is now live!

December 14, 2018

Sherlock + Navisworks – "Lightning Fast Coordination"

From the FlyPaper Technologies website:

Sherlock + Navisworks™

Lightning Fast Coordination

Distill

Dead simple clash grouping based on your already established model hierarchy. Distill is here to save you valuable time and accelerate the production of usable models for your team.

CVP-SYNC for Navisworks Manage – Export Clashes and Viewpoints to iFieldsmart Platform

From the Autodesk App Store:

This plugin allows you to export clashes and viewpoints to ifieldsmart platform.

After opening a specific project file in Autodesk® Navisworks®, you must create all the Clashes and Viewpoints. You can find the plugin under Navisworks "Tool Add-ins  -> CVP-SYNC”.

The CVP-SYNC plug-in uploads the created Clashes and Viewpoints on the "ifieldsmart platform". You can glimpse the data in "http://ifbim.ifieldsmart.com".

ClashViewPointManager (CVPM) for Navisworks Manage – Organize, Extend and Speed Up the Clash Detection Process

From the Autodesk App Store:

The aim of this app is to organize, extend and speed up the clash test process after performing Autodesk® Navisworks® Clash test. It boosts the process and action after running the Clash test which includes the following actions; 'Find and Assign to trade', 'Grouping', 'Rename Clash', 'Rename ViewPoints', 'Merging and Record Time'. The complete plugin has been designed to keep the process and actions usually performed by users to scale up the Clash Test. The plugin is an integrated kit of actions: Assigned to, Grouping, Rename Clash, Rename Viewpoints, Merging and Recording. This is the default process after running Clash tests regardless of the project you are working. iFieldSmart ClashViewPointManager picks up the most and default action and put them in flow which is best to speed up the process.

1. Assign To: This option allows you to assign clashes to respective Test Name by selecting Mechanical, Electrical, Plumbing and Sprinkler trade type.
2. Grouping: It is a feature that facilitates the grouping of elements and associated clashes for a better view and understanding, on the basis of common elements.
3. Rename Clash: Allows users to define names for the clashes provisioning better understanding of a clash report, hence the clash report becomes more meaningful & easy to understand. You just   need to fill in a few fields like Project Name, Level Name and it will Rename the clashes for you.
4. Rename ViewPoints: Allows you to give user defined names to the viewpoints for better understanding. The viewpoints will be more meaningful and easy to understand. You just need to fill in a few fields like Project Abbreviation, Level Name and it will Rename viewpoints for you.
5. Merging: Merging tab allows you to merge viewpoints together i.e. Dim and Hide. This gives you a better understanding of the clash and the problems associated with it.
6. Record Time: Record Time is an extended feature, keeping collaboration in mind and interaction with different engineers. Recording allows you to record the brainstorming & discuss the clashes to use the information for resolving the problem. This will greatly help productivity if you are working with different engineers.

BIM Track™ v1.14.0 for Revit and Navisworks

From the Autodesk App Store:

About This Version

Version 1.14.0, 12/8/2017

New Features:

• Clash spheres can now be displayed as billboards tag instead of spheres in the 3D Viewer.
• Clash pin points can now be selected. 
• The issue number will now be displayed when mouse hovering a clash sphere or a camera icon in the 3D Viewer.
• The BCF now support hidden elements. 
• New options were added to the 3D viewer to adjust the 'fit to selection' section box buffer in the option menu. 
• It is now possible to create a section box around a clash sphere in the 3D Viewer. 
• Various bug fixes and minor enhancements.

We hope you enjoy the new features. Don't hesitate to contact us if you want a Demo!

Description

BIM Track™ is a web-based collaboration platform that empowers your team with better coordination workflows. BIM Track™ provides a central hub for all coordination information from design to construction. With information at your fingertips, you can get access to your data anytime, anywhere, either from a desktop or mobile device. Charts and graphics help understand data and your management performance through precise metrics. We promote Open BIM workflow solutions by supporting IFC (Industry Foundation Classes) and BCF (BIM Collaboration Format).