Our Observations, Your Feedback

usBIM (ACCA) Review – Streamlining OpenBIM Workflows through bSDD and IDS Integration

Observations by Tashayani Ratnakumar, AcePLP Code Checker Squad

usBIM, developed by ACCA Software, positions itself as an integrated, cloud-based ecosystem designed for BIM professionals who want to validate, enrich, and manage model data using open standards. Built around IFC, IDS, and bSDD, it aims to promote interoperability across various tools and project teams.

This article highlights what we observed while testing the usBIM web platform and its beta Revit plug-ins. Our goal is to outline its features, limitations, and practical considerations so that readers, whether BIM Managers, Coordinators, or Modellers, can evaluate how usBIM fits their specific needs.

At the end, we invite you to share your own ratings and experiences. Your feedback will help build a more balanced picture of how usBIM performs across the industry.

Let’s break down usBIM’s performance by key aspects.

Tool Overview

usBIM is a cloud-based BIM management platform designed to support multidisciplinary teams working with openBIM standards. It is typically used by BIM managers and coordinators to centralize data requirements, manage dictionaries, and ensure model compliance.

usBIM is not a primary design authoring tool; it functions as a management hub that operates on models produced elsewhere, focusing on data enrichment and validation. Unlike basic viewers, it allows users to directly manage buildingSMART Data Dictionaries (bSDD) and Information Delivery Specifications (IDS) to “upcycle” model data for technical consistency.

Where This Tool Fits in an openBIM Workflow

usBIM sits primarily in the data management and validation stage of an openBIM workflow.

Typical placement:

• Upstream of model authoring: Creating and managing bSDD dictionaries.
• As a bridge for model enrichment: Adding properties to IFC models via bSDD.
• In-tandem with authoring: Connecting Revit to cloud-hosted specifications.
• Validation gate: Checking models against IDS requirements before final submission.

In openBIM workflows, usBIM is often used to establish the “rules” of the model data and to verify that IFC exports from various authoring tools meet those specific standards.

IFC & Interoperability Observations

Based on our review:

• usBIM is able to consume IFC models for viewing, enrichment, and validation purposes.
• The tool allows for modifying and enriching IFC data by adding properties directly from bSDD dictionaries, which is useful when the original authoring software is inaccessible.
• The system supports bulk property application based on element filtering, though values must currently be entered manually.
• Beta Revit plug-ins allow for direct connectivity, enabling Revit users to browse cloud-hosted dictionaries. However, changes made to the IFC in the web platform do not currently “push back” to the source Revit file automatically; this workflow remains one-way until future updates are released.

Key Strengths Observed in Practice

From hands-on testing and evaluation of the beta features, we observed that:

• The platform supports high-level data standardization by linking IDS creation directly to bSDD dictionaries.
• Users can perform multi-standard validation through the usBIM.IDSagent module, allowing a model to be checked against multiple requirement sets at once.
• The interface is accessible to non-authoring stakeholders who need to manage or inspect data requirements without using complex CAD software.
• It streamlines dictionary management, providing a straightforward way to structure and export custom property definitions.

Limitations & Considerations

Some considerations users should be aware of:

• Manual setup can be time-consuming, as adding individual properties to an IDS file from a dictionary currently requires manual searching.
• Revit integration is still in beta, meaning functionality is currently focused on viewing data rather than full automated “write-back” capabilities.
• The platform is dependent on internet connectivity, which can occasionally introduce syncing lag when browsing large dictionaries or validating models.
• Modular pricing requires careful evaluation to determine which specific tools (bsDD, IDS, or IDSagent) are necessary for a project’s specific scope.

Best-Fit Use Cases

usBIM is well suited for:

• Model Data Enrichment: Populating missing data and parameters in IFC files before final coordination.
• Standardization Management: Creating and hosting organization-specific property dictionaries.
• Complex Validation Tasks: Projects requiring high-fidelity checking against multiple Information Delivery Specifications.
• Inclusive Data Access: Involving project coordinators or clients in the data validation process without requiring authoring tool licenses.

Relationship to Compliance & Checking Workflows

usBIM can support compliance workflows directly by:

• Performing rule-based validation of IFC models against formal IDS files.
• Ensuring model data consistency by using standardized “allowed values” from bSDD.
• Identifying data gaps early in the coordination process, allowing teams to resolve issues before formal project milestones. However, it is currently a data-validation tool and does not replace the geometric checking or regulatory compliance logic found in specialized automated checking software.

How This Review Was Developed

This review is based on:

• Hands-on testing by the AcePLP team of the web platform and beta Revit plug-ins.
• Technical data provided by ACCA Software team regarding tool roadmaps and current features.
• Observations focused on openBIM and the practical application of buildingSMART standards.

Neutrality Statement

This review is intended to support industry understanding of BIM workflows. It does not constitute endorsement, certification, or compliance assurance.