Our Services
At Twilight Engineering Solutions Ltd, we provide integrated architectural, structural, MEP, BIM, and digital engineering services that support projects across the UK construction industry — from early concept through to construction and handover.
Our services are structured around the RIBA Plan of Work and delivered in line with ISO 19650, enabling architects, consultants, and contractors to clearly understand how and when we support a project.
Our role is to support design teams, reduce coordination pressure, and deliver clear, buildable, and well-coordinated technical outputs — while always respecting design authorship, intent, and established project roles.
Services by RIBA Stage
RIBA Plan of Work – Service Alignment
| RIBA Stage | Architectural Support | BIM & Digital | Structural Engineering | MEP Engineering | Coordination & Support |
|---|---|---|---|---|---|
| Stage 0 – Strategic Definition | Feasibility input (as required) | BIM strategy input | Initial structural advice | Initial MEP advice | Early coordination input |
| Stage 1 – Preparation & Brief | Spatial feasibility support | BIM execution planning input | Structural concept input | MEP concept input | Interface planning |
| Stage 2 – Concept Design | Design development support | Concept BIM models | Structural concept design | MEP concept layouts | Early coordination |
| Stage 3 – Spatial Coordination | Stage 3 drawing packages | Federated BIM coordination | Structural analysis & modelling | MEP modelling & coordination | Clash detection & resolution |
| Stage 4 – Technical Design | Stage 4 technical detailing | ISO 19650 information delivery | Structural detailing & fabrication info | MEP detailed design & installation info | Fully coordinated technical package |
| Stage 5 – Construction | Design support & clarifications | Model updates & coordination | Site support & technical responses | Construction-phase MEP support | Ongoing coordination & issue resolution |
| Stage 6 – Handover | Record information support | As-built & asset data | As-built structural info | As-built MEP & COBie support | Coordinated handover package |
| Stage 7 – In Use | (By agreement) | (By agreement) | (By agreement) | (By agreement) | (By agreement) |
Services are provided flexibly depending on project role, procurement route, and team structure.
Architectural Technical Support & Detailing Services
We provide architectural technical support services that help design teams progress projects through the RIBA Plan of Work, from early design into coordinated, construction-ready information — while fully respecting design authorship and intent
Architectural Design Development (RIBA Stages 2–3)
- Development of layouts from architect-issued sketches, concept designs, and briefs
- Spatial planning and feasibility support
- Early-stage massing and coordination models
- Design development aligned with planning requirements, programme, and project constraints
This stage ensures design intent is protected while preparing the project for technical progression.
Architectural Detailing & Technical Documentation (RIBA Stages 3–4)
- RIBA Stage 3 and Stage 4 drawing packages
- Detailed plans, elevations, sections, and 3D views
- Typical and bespoke construction details
- External envelope, junction, and interface detailing
- Coordination of architectural elements with structural and MEP systems
All outputs are aligned with UK regulations, specifications, and consultant information.
Interior & Fit-Out Technical Support (RIBA Stages 3–4)
- Interior layouts and partition coordination
- Reflected ceiling plans coordinated with lighting and services
- Finishes, materials, and specification schedules
- Door, window, and ironmongery schedules
Model-Based Architectural Documentation
- Architectural BIM model development aligned with agreed Levels of Information Need
- Model-linked drawings and schedules
- Planning, tender, and construction documentation
- Quantity take-offs and material schedules
What you receive:
Clear, buildable architectural information with reduced coordination pressure during RIBA Stages 3–4.
BIM Modelling, Coordination & Digital Delivery Services
(Aligned with ISO 19650 & the UK BIM Framework)
We deliver intelligent BIM and digital engineering services that improve coordination, data accuracy, and information management across the project lifecycle.
BIM Modelling & Authoring
- BIM model creation from concept through construction information stages
- CAD-to-BIM conversion and model refinement
- Model development aligned with Levels of Information Need
- Platform-agnostic BIM delivery within the Common Data Environment (CDE)
BIM Coordination & Clash Management
- Federated BIM model coordination
- Clash detection and resolution workflows
- Issue tracking and coordination reporting
- Consultant model integration within the CDE
Information Management & Data Deliverables
- Coordinated IFC models
- Model-based quantity extraction
- COBie and structured asset data
- As-built BIM documentation (RIBA Stage 6)
What you receive:
ISO 19650-compliant information, reliable coordination, and a single source of truth.
Structural Engineering & Detailing Services
We provide end-to-end structural engineering services supporting projects from early concept through to fabrication, construction, and handover.
Structural Design & Engineering (RIBA Stages 2–4)
- Structural concept development and system selection
- Load assessment and design (gravity, lateral, wind, seismic)
- Structural analysis and performance verification
- Foundation, substructure, roof, and complex structural design
- Engineering calculations and reports
Structural Modelling & BIM Integration
- 3D structural BIM models aligned with Levels of Information Need
- Federated model integration within the CDE
- Clash detection and coordination
- Model-based quantity extraction
- Coordinated IFC models
Steel, Concrete & Timber Detailing
- Structural steel modelling and connection detailing
- Reinforced concrete detailing
- Timber and mass-timber (CLT, glulam, LVL) detailing
- Fabrication, shop, and erection drawings
- Schedules and material take-offs
Construction & Handover Support (RIBA Stages 5–6)
- Installation and assembly drawings
- Method statements and sequencing support
- Site visits and technical clarifications
- Temporary works and remedial engineering
- As-built documentation and handover deliverables
MEP Engineering & Coordination Services
We provide coordinated mechanical, electrical, and plumbing services that integrate cleanly with architectural and structural design across the RIBA Plan of Work.
MEP Design & Engineering (RIBA Stages 2–4)
- HVAC, electrical, plumbing, and fire protection system design
- System layouts and performance-based solutions
- Plant space planning and service zoning
- Engineering calculations and technical documentation
MEP Modelling, Detailing & Coordination (RIBA Stages 3–4)
- Detailed MEP BIM models aligned with Levels of Information Need
- Equipment layouts and service routing
- Builder’s work and interface coordination
- Shop and installation drawings
- Clash detection and resolution
- Ceiling and service zone coordination
Construction-Phase MEP Support (RIBA Stage 5)
- Responses to RFIs and technical queries
- Model and drawing updates reflecting site conditions
- Support with installation sequencing and access coordination
- Ongoing coordination with architectural and structural information
As-Built MEP & Handover Support (RIBA Stage 6)
- As-built MEP drawings and BIM models
- Asset data and COBie support (where required)
- Coordination of MEP information for handover
- Support with O&M and digital record alignment
What you receive:
Clear, coordinated MEP information across all stages, with reduced site-stage issues and reliable handover data.
Visualisation, CGI & Digital Presentation Services
- Interior and exterior architectural renderings
- Concept visuals aligned with RIBA Stages 2–3
- Walkthrough and fly-through animations
- Presentation and marketing-ready digital media
Integrated Technical Coordination & Delivery Support
Where required, we provide integrated coordination across architectural, structural, and MEP disciplines.
- Multidisciplinary coordination and workflow support
- Consultant information integration within the CDE
- QA/QC reviews and document control
- Delivery of a single, coordinated technical package