usBIM.gantt — Cloud-Based 4D BIM Software from ACCA
See Your Project in Time. Plan Every Phase Before It Becomes a Problem.
usBIM.gantt is the 4D BIM software that connects your construction schedule to the BIM model — giving project managers, engineers, and construction planners the ability to simulate the full project timeline, detect activity interferences, control phase-by-phase costs, and coordinate multiple subcontractors in a single federated BIM Gantt environment. All from the browser. All in real time.
Value Statement Less rework. Fewer delays. Complete programme visibility — from first phase to final handover.
Trust Statement Before technology, there has to be a relationship. Isotech works alongside project managers, BIM coordinators, and construction teams across the GCC — coaching and supporting your adoption of 4D BIM scheduling software from day one.
Value Pillars
4D BIM Software. Your Schedule and Your Model. Connected.
Link every BIM model object to its corresponding construction activity — and watch the project build itself in simulation. The 4D BIM software that makes your programme visual, verifiable, and shareable with every stakeholder who needs to understand how the project will be delivered.
4D Construction Planning. Simulate Every Phase Before Work Begins.
Build the project programme phase by phase in an intuitive BIM Gantt environment. Define activity durations, sequences, and dependencies. Simulate the chronological evolution of the construction from the browser in real time. 4D construction planning that identifies problems in the planning environment — before they become incidents on site.
4D Scheduling Software. Interference Detection Built In.
Automatically detect temporal overlaps and spatial conflicts between construction activities — across the full project programme and across multiple subcontractor models. The 4D scheduling software that resolves sequencing conflicts before they cause programme delays or site safety incidents.
Value
BIM Gantt. Cost Control Linked to the Programme.
Define cost items for each activity in the BIM Gantt and track spending evolution in real time as the project progresses. Daily cost simulation gives project managers a precise view of cumulative expenditure at any point in the programme — connecting time and cost in a single 4D simulation software environment.
4D Simulation Software. Federated Models for Complex Projects.
Import and federate multiple BIM models — each representing a different subcontractor's scope — and generate a unified BIM Gantt that incorporates all individual schedules. 4D simulation software for the management of complex, multi-party construction projects where coordinated programme visibility is a contractual requirement.
Isotech Support from Day One
Isotech coaches and supports project managers, BIM coordinators, and construction teams across the GCC through every stage of 4D BIM scheduling software adoption. Before technology, there has to be a relationship.
Why 4D BIM Software Matters in the GCC
GCC Mega-Projects Demand Precise Programme Control. Your 4D Construction Planning Has to Match the Complexity.
Construction programmes across the Gulf are among the most demanding in the world — mega-infrastructure projects, large-scale mixed-use developments, major public facilities, and high-rise residential towers all operating under tight contract programmes, multi-party subcontractor structures, and stringent client and authority reporting requirements. Programme overruns and construction interferences on GCC projects translate directly into liquidated damages, contractual disputes, and reputational risk for the contractors and project managers responsible for delivery.
Government authorities and sophisticated project owners across the UAE, Saudi Arabia, and wider GCC region increasingly require BIM project planning software capability as part of the project delivery framework — with 4D programme models that connect the construction schedule to the BIM model and provide a verifiable, visual record of planned versus actual progress. For construction companies and project management teams whose planning workflows remain disconnected from the BIM model, the competitive and contractual consequences of that gap are growing.
usBIM.gantt is the 4D BIM software that closes that gap — connecting programme, model, cost, and team coordination in a single cloud-based BIM Gantt environment, and giving project managers across the GCC the 4D construction planning capability to deliver with confidence.
Programme overruns become contractual liability
On GCC projects, delays translate directly into liquidated damages, contractual disputes, and reputational damage for contractors and project managers.
Planning disconnected from the BIM model
Construction schedules managed in separate tools with no link to the model — spatial and temporal conflicts invisible until they materialise on site.
Authority and client reporting requirements growing
UAE, Saudi Arabia, and wider GCC authorities increasingly require 4D programme models as part of BIM-compliant project delivery frameworks.
Try usBIM.gantt free for 30 days — full 4D BIM scheduling software capability included, with technical support from Isotech from day one.
Core Capabilities
Complete BIM Project Planning Software — From Schedule to 4D Simulation to Real-Time Cost Control.
4D Construction Planning — Intuitive BIM Gantt Environment
usBIM.gantt provides an intuitive BIM Gantt environment for building the full project programme — entering activities with titles, durations, start and end dates, descriptions, and cost items, and linking each activity directly to the corresponding objects in the BIM model. Activities can be colour-coded by type (construction, demolition, temporary works, and others), and the Gantt chart can be broken down to any level of detail required by the project.
A distinctive feature of usBIM.gantt's 4D construction planning environment is the ability to distribute a single activity across non-contiguous time periods — representing recurring or phased activities as a single entity in the Gantt without cluttering the chart with multiple separate items. This makes complex programmes with intermittent activities clearer, more readable, and more accurate as a reflection of how construction will actually proceed.
Calendar management allows the definition of working days, periodic and one-time holidays, and project-specific working patterns — ensuring that every programme in the 4D scheduling software environment is realistic and site-accurate from the outset.
4D Simulation Software — Dynamic Visualisation of Project Evolution
Once the BIM Gantt is built and model objects are linked to their activities, usBIM.gantt generates a dynamic 4D simulation that visualises the construction of the project chronologically — directly from the browser, in real time, with no specialist software required. Project managers, clients, and construction teams can navigate the simulation across the full project timeline, observing how each element of the BIM model appears, progresses, and completes in sequence.
The usBIM.browser preview function allows the model to be viewed at any specific date within the programme — showing the precise state of the construction at that point in time, including the cumulative model value and the activities in progress, completed, or not yet started. 4D simulation software capability that transforms abstract Gantt data into a visual, navigable record of how the project will be built.
Interference Detection — Resolving Conflicts Before They Reach Site
usBIM.gantt performs detailed interference analysis across the full programme — identifying temporal overlaps between activities and spatial conflicts between BIM model elements scheduled for concurrent work in the same area. Detected interferences are tracked, managed, and exportable in PDF format, giving project managers a documented record of each conflict and its resolution for programme audit and contract management purposes.
This 4D scheduling software capability is particularly critical on GCC construction sites where multiple subcontractors work concurrently across complex structures — where undetected activity conflicts are among the most common causes of programme delay, rework, and safety incidents.
BIM Gantt Cost Management — Time and Cost in One Environment
usBIM.gantt connects cost to programme within the same BIM Gantt environment — allowing project managers to define cost types and associate expenditure with each planned activity. Daily cost simulation shows the progressive spending curve for the full project, with a real-time view of cumulative cost at any date in the programme.
This BIM project planning software capability gives project managers and commercial teams the financial visibility they need to identify cost overruns early and take corrective action before they compound.
Federated BIM Gantt for Complex, Multi-Party Projects
For projects involving multiple subcontractors and multiple BIM model packages, usBIM.gantt provides a powerful federation capability — allowing individual BIM models and their respective Gantt schedules to be imported, combined, and managed within a single unified BIM Gantt. The federation Gantt incorporates all individual activity schedules automatically, providing a complete programme overview of the entire construction site in one interface.
This federated 4D BIM software capability enables project managers to identify overlaps, conflicts, and dependencies between subcontractor activities — and to conduct unified 4D simulations that show the overall construction progress of all packages simultaneously. Changes applied to the federation Gantt can be propagated to individual project Gantts, ensuring consistency and real-time updates for all parties.
Point Cloud Integration — Planned vs Actual Progress Monitoring
usBIM.gantt integrates point cloud data from site surveys directly into the 4D project timeline — enabling direct comparison between the BIM model as planned in the programme and the as-built condition captured on site at any point in the construction.
This comparison allows project teams to evaluate, visually and temporally, how actual site progress aligns with the planned schedule — identifying delays and discrepancies with the precision of a survey-accurate point cloud rather than relying on subjective progress assessments. The 4D scheduling software function that makes programme monitoring as rigorous as the programme itself.
Import/Export Compatibility — Works with Your Existing Workflows
usBIM.gantt imports and exports Gantt schedules in both open formats (XML) and proprietary formats including Primavera and MS Project — ensuring seamless integration with the project management software already in use across the GCC construction sector.
BIM model compatibility covers IFC, RVT, SKP, DAE, OBJ, DWF, and DWG formats. Gantt charts can be exported in PDF format for distribution to collaborators and submission to project owners and authorities. The BIM project planning software that works within your existing workflows, not against them.
Integration with CerTus HSBIM — Safety Planning Linked to the Programme
usBIM.gantt integrates directly with CerTus HSBIM — ACCA's construction health and safety BIM platform — allowing the safety Gantt created in CerTus HSBIM to be visualised and further developed within the usBIM.gantt cloud environment.
This integration connects safety planning to programme management, enabling project teams to view planned safety measures in relation to scheduled construction activities, manage the temporal placement of collective protection devices and site safety elements, and conduct proactive interference analysis between construction activities and safety provisions — contributing to a genuine prevention culture across the project.
Isotech Differentiator
4D BIM Scheduling Software. With GCC Construction Expertise and Implementation Support Behind It.
usBIM.gantt is 4D BIM software from ACCA — the world's leading IFC openBIM software developer, with a global user base of project managers, BIM coordinators, and construction professionals. As Isotech, we bring it to construction companies, project management consultancies, and engineering teams across the Middle East and Africa with the implementation support, GCC programme management knowledge, and hands-on coaching that successful adoption of 4D construction planning tools requires.
Deploying BIM project planning software effectively means configuring the 4D scheduling environment for the project types and subcontractor structures your teams manage, aligning Gantt import/export workflows with the project management tools already in use, and training project managers and BIM coordinators on the full 4D simulation software capability. Isotech provides all of this — with multilingual support and a long-term relationship that ensures lasting value across your project portfolio.
Before technology, there has to be a relationship. We work alongside your teams to ensure successful adoption, measurable value, and long-term operational success.
4D Environment Configuration
usBIM.gantt configuration for GCC project types, programme structures, and authority reporting requirements — so the 4D scheduling environment reflects how your projects are actually planned, structured, and reported.
Primavera & MS Project Integration
Primavera and MS Project import/export setup aligned to existing project management workflows — ensuring that usBIM.gantt works within the tools your project managers and planners already use, not against them.
Team Training
Training for project managers, BIM coordinators, planning engineers, and construction managers — practical, role-specific, and delivered in your working environment with hands-on programme scenarios from your actual project portfolio.
CerTus HSBIM & usBIM Integration
Integration with CerTus HSBIM and the usBIM platform common data environment — connecting 4D programme management to safety planning, BIM coordination, document management, and the full usBIM project delivery ecosystem.
Multilingual Regional Support
Multilingual onboarding and dedicated regional support across the GCC and MEA — real people who understand GCC programme management requirements, authority reporting standards, and your specific project environment.
Questions Worth Answering Up Front.
What is usBIM.gantt and who is it for?
usBIM.gantt is cloud-based 4D BIM software for project managers, planning engineers, BIM coordinators, and construction teams who need to link their construction schedule to the BIM model, simulate project evolution, detect programme interferences, and control costs in real time. It covers the complete BIM project planning software workflow: BIM Gantt creation, 4D construction planning, dynamic simulation, interference detection, cost tracking, and federated multi-model management — all from the browser. It is compatible with IFC, RVT, SKP, and all major 3D model formats, and integrates with Primavera and MS Project.
How does the 4D BIM scheduling capability work?
Project activities are created in the BIM Gantt environment with defined durations, sequences, and costs, then linked directly to the corresponding objects in the BIM model. usBIM.gantt generates a dynamic 4D simulation from these linked activities — visualising the chronological construction of the project directly in the browser. The usBIM.browser preview function allows the model to be viewed at any specific date in the programme, showing the precise construction state and cumulative cost at that point in time.
What interference detection does usBIM.gantt perform?
usBIM.gantt performs both temporal interference analysis (detecting overlapping activities in the programme) and spatial interference analysis (identifying BIM model elements scheduled for concurrent work in the same area). Detected interferences are tracked, managed, and exportable in PDF format for programme audit and contract management. For multi-party GCC projects, interference analysis can be conducted across federated models — identifying conflicts between the activities of different subcontractors in the unified BIM Gantt.
How does the federated BIM Gantt work for multi-party projects?
usBIM.gantt allows multiple BIM models — each representing a different subcontractor’s scope — to be imported and combined with their individual Gantt schedules into a single federated programme. The federation Gantt provides a unified 4D construction planning view of the entire construction site, with overlaps and dependencies between subcontractor activities clearly visible. Changes applied to the federation Gantt can be propagated to individual Gantts, keeping all parties aligned in real time.
How does usBIM.gantt integrate with Primavera and MS Project?
usBIM.gantt imports and exports Gantt schedule data in both Primavera and MS Project formats, as well as open XML format — allowing programme data to flow between usBIM.gantt and the project management tools already in use across the project team. This ensures that the 4D BIM scheduling software environment works within existing workflows rather than requiring teams to abandon their current planning processes. Isotech provides setup and configuration support for all import/export integrations.
What support does Isotech provide for usBIM.gantt implementation?
Isotech provides end-to-end coaching and implementation support across the Middle East and Africa — from Gantt environment configuration and import/export workflow setup, through team training for project managers, planning engineers, and BIM coordinators, to long-term technical assistance. We work with construction companies, project management consultancies, and engineering teams at every stage of their 4D BIM software adoption. Contact our team to discuss your project requirements and start your 30-day free trial.
Technology Partner
We are proud to partner with ACCA Software, a global provider of BIM, digital construction, and Common Data Environment (CDE) solutions. Through this collaboration, we leverage advanced technologies that support ISO 19650-compliant workflows, streamline project coordination, and enhance information management across the entire project lifecycle.
This partnership enables us to deliver innovative, scalable, and industry-aligned solutions that help clients improve collaboration, efficiency, and project outcomes.
The 4D BIM Software That Connects Every Phase of Your Programme to Every Element of Your Model.
usBIM.gantt gives every project manager and construction team across the GCC the tools to plan accurately, simulate completely, detect conflicts early, and control costs precisely — for every project type and programme complexity. The BIM project planning software that makes your construction programme as rigorous, visual, and coordinated as your BIM model. Backed by Isotech’s guidance and regional expertise from day one.
Try it free. Plan with confidence. Build with Isotech alongside you.
“Technology creates possibilities. Relationships create successful outcomes.”
