Models & BIM
Bring multiple engineering disciplines into a coordinated model environment.
B3 Nexus · BIM + Simulation
Coordinate the asset. Simulate the consequences. Build with better information.
B3 Nexus treats BIM as part of the engineering operating model—not simply 3D visualisation—and extends it toward simulation, design exploration and model-connected delivery.
Quick answer
What is the BIM + simulation proposition?
Models become more valuable when they connect disciplines, quantities, programme, cost, procurement, inspection and commissioning. Simulation then helps teams test alternatives before decisions become expensive physical problems.
- Multidisciplinary BIM coordination
- Design explorer and option comparison
- Structural and systems analysis links
- Construction sequencing and logistics simulation
- 4D/5D integration: time and cost connected to the model
Big Three innovation model
Build the future many times before building it once.
Nexus coordinates architectural, structural, civil, mechanical, electrical, plumbing, fire, utilities, roads, water and process systems in one model environment. The model connects to the information required to procure, install, inspect, commission and operate the asset.
The simulation universe spans structural behaviour, energy, thermal conditions, daylighting, pedestrian flow, construction sequencing, crane operations, programme uncertainty, traffic, hydrology, water systems, emergency scenarios and maintenance planning.
Connected capabilities
How this fits into the Big Three delivery model.
Each capability strengthens engineering decisions, construction execution, evidence and lifecycle value across the project lifecycle.
Design Explorer
Compare structural systems, layouts, material systems, pipe routes, energy strategies and construction methods.
Structural Intelligence
Connect load cases, checks, assumptions, findings, approvals, inspection evidence and as-built conditions.
Building Systems
Coordinate HVAC, electrical, plumbing, fire, controls, energy, water, security and process systems.
Simulation Universe
Test performance and delivery scenarios before committing capital and site resources.
4D + 5D integration
Connect the engineered asset to time, sequence, procurement, cash flow and cost impacts.
Explore the digital thread
Related B3 Nexus and advanced-engineering pages.
Follow the connection from site understanding through digital engineering, physical execution, verification and the living asset.
B3 Nexus Digital Thread
Connect site, design, engineering, construction, evidence and operations.
Explore
Site & Context Intelligence
Start decisions from survey, terrain, utilities, hydrology and real-site constraints.
Explore
Construction Mission Control
Connect programme, field operations, cost, procurement, quality and safety.
Explore
Reality & Evidence
Compare design intent with observed, inspected and accepted work.
Explore
Living Digital Twin
Carry structured asset information beyond handover into operations.
Explore
DfMA + Modular Construction
Design suitable packages for manufacture, preassembly and rapid installation.
Explore
Model-to-Machine Earthworks
Connect terrain models, machine guidance and verified as-built surfaces.
ExploreAnswers
Frequently asked questions
Practical answers about how Big Three Engineering connects digital engineering with physical delivery.
Is BIM only used for visualisation?
No. The Nexus strategy treats BIM as an information and coordination environment connected to programme, quantities, cost, procurement, installation, inspection, commissioning and operations.
What can be simulated?
Simulation spans structural behaviour, environmental conditions, energy, thermal comfort, daylight, movement, construction sequencing, logistics, cranes, programme uncertainty, traffic, hydrology, water systems and operational scenarios.
How does simulation strengthen engineering judgement?
Simulation helps professionals evaluate more alternatives, performance conditions and delivery consequences before committing to a solution.
What do 4D and 5D mean?
3D represents the engineered asset; 4D adds time and sequence; 5D adds cost and commercial information.
From digital intent to physical infrastructure.
Bring B3 Nexus and advanced engineering methods into your next project.