DB-2 submain: volt drop
Recomputed 5.8% at the board: over the example 5% target
BS 7671 App 4, Table 4Ab
WYRM recommends
Uprate the submain 70 → 95 mm² (4-core SWA)
holds Ib = 184 A over the 38 m run at 4.3% volt drop
WYRM / Building services engineering
Agentic MEP.
Engineering,
connected.
Produce project documents, reports, schedules, calculations, update Revit models, generate coordinated layouts and assess building loads in one engineering workspace.
Discuss a pilotFor UK building services engineers and MEP consultants. Available through a pilot.
Drawings. Calculations. Documents.
What is agentic MEP?The complete MEP workflow
One package for building services.
WYRM calculates the loads, sizes the services and draws them into coordinated layouts across the building.
Equipment selections reference manufacturer data. The resulting design feeds the Revit workflow, specifications, schedules and project documents, reducing repeated data entry and reliance on separate engineering applications.
A custom AI model built specifically for building services directs the work. Deterministic calculation engines compute the engineering results from project inputs and defined methods, with the working and source references available for review.
Across the building services
Engineering in every room.
WYRM calculates, sizes and draws the services across disciplines. The same engineering information feeds equipment selection, coordination and the project documents.
Electrical distribution
Cable sizing · protection · distribution
Calculate demand, size cables and check protection against manufacturer device data. Draw the distribution layout and carry the design into schedules and model updates.
Explore the workflowVentilation and CFD airflow
Fresh air · ductwork · airflow
Calculate air volumes, size and draw ductwork, and reference manufacturer fan and terminal data. Coordinate routes and investigate air distribution with CFD.
Explore the workflowThermal modelling and energy
Heat loss · cooling loads · energy
Model fabric, solar gains, occupancy and weather to assess loads, comfort and energy. Size equipment from the results and carry it into the coordinated design, with Passivhaus and PHPP workflows connected.
Explore the workflowLighting and daylighting
Illuminance · uniformity · glare
Calculate illuminance, uniformity, daylight and glare. Use manufacturer photometric data to draw luminaire layouts, coordinate ceiling services and populate schedules.
Explore the workflowPublic health and pipework
Water demand · pipe sizing · drainage
Calculate hot and cold water demand, size and draw pipework, and coordinate drainage through the building. Reference manufacturer fixture and equipment data in the design.
Explore the workflowDesign QA and recommendations
Calculation review · design changes
Identify the issue, recommend a calculated correction and apply the reviewed fix. Recheck the affected design and update its drawings, schedules and documents.
Explore the workflowThe work, connected
From the first drawing
to the issued documents.
Calculate the requirements, size and draw the services, then coordinate the building and produce the documents. WYRM brings these workflows into one package, using shared project information.
01
Document production
Produce reports and project documents from the same calculations, coordinated layouts and equipment data.
02Revit model updates
Carry calculated design values and equipment information into live Revit updates, connected to the wider MEP package.
03Thermal modelling
Model thermal performance, calculate heating and cooling loads, and carry the results into sized equipment and coordinated layouts.
04Specification writing
Populate MEP specifications from the calculated design, coordinated services and manufacturer product information.
05Schedule creation
Create equipment schedules with calculated duties, selected sizes, manufacturer references and coordinated locations.
06Drawing Studio
Detect rooms, assess loads and draw sized services into coordinated layouts using project geometry and manufacturer data.
Drawing Studio
Open the drawing.
Find the rooms.
Work from room detection to load assessments and coordinated services.
WYRM detects rooms, calculates their requirements and draws the sized services into the plan. Coordinate routes and equipment across disciplines, reference manufacturer dimensions and performance data, and carry the design into the documents.
Explore Drawing StudioOpening floor planDrawing reference · Ground floor
Drag to pan · select a room to inspectGeometry loaded
Rooms → loads → terminals → sized routes
Engineering review
Find the issue.
Recommend the fix.
Apply the fix.
See why a result needs attention and what to change. WYRM brings the recommendation back into the calculation and follows the impact across the design, ready for your engineer to review.
Illustrative review. Apply the recommendations to see the result.
Output under review
DB-2 distribution + AHU-1 ventilation · after the Level 3 layout change
- Ib = 184 Aschedule of loads
- Run 38 mcoordinated model
- 150 occupantsrevised room data
- Ambient 30 °CER §2.4
Gate 1: independent recompute
A separate engine recalculates every result. The maker never marks its own work.
Protective device discrimination
Selectivity holds across the affected ways
BS 7671 §536.4
Gate 2: standards + coverage
Checks each output against its governing standard and that the change cascade left no discipline unchecked.
AHU-1 fresh air rate
1,200 l/s = 8 l/s·person at the revised 150 occupancy: below 10
Approved Doc F · BS EN 16798-1
WYRM recommends
Raise AHU-1 supply 1,200 → 1,500 l/s
10 l/s·person for the revised occupancy; duct velocity stays < 6 m/s
Change cascade coverage
Layout change propagated to 2 downstream disciplines, both checked again
Project Terminal
Held as a draft: 2 recommendations for your named engineer
Each recommendation includes the reason for the change and the supporting inputs. The calculation pack stays with the result. Your named engineer reviews and signs.
Engineer review required
WYRM's custom engineering model
Security belongs
in every project.
From everyday design work to projects with sensitive information.
WYRM's custom AI model is built specifically for building services and works with deterministic engineering engines across the package. Discuss the access, information handling and security requirements of your project directly with our team.
Explore secure project workflowsEngineering experience
Grounded in building services.
WYRM was founded by building services engineers. The work starts with the drawings, calculations and decisions engineering teams handle every day.
Work with WYRM
Bring your next engineering workflow.
Available through a pilot for UK building services teams.