MEPVirtual - Engineering Knowledge Hub

ENGINEERING VIRTUAL LABS

Design. Calculate. Verify. Comply.

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๐ŸŒ ENGINEERING REFERENCE: DUBAI ยท DEWA
โ— SYSTEM ONLINE
Not sure which lab you need? Ask the Copilot.Type your question in the search box above and choose “Ask the Copilot”, or open it directly. It finds the right lab and tab, answers from our engineering Q&A and site case library, and runs the calculation in 2D, 3D and 4D.
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FIELD-BUILT REFERENCE TOOLS ยท MEP & ELV ENGINEERING

Explore MEP systems.
Learn by doing.

Free virtual labs and engineering calculators for electrical, HVAC, fire alarm and ELV systems. Explore switchgear checks, cable containment, FAHU operation, earthing, solar PV and more. Work through real engineering scenarios, inspect results and learn how systems behave.

Start here: Search for a system, choose a lab, change the inputs and compare the results. Built for students, site engineers and experienced MEP professionals.

โ–คREAL PROJECT
BASED
โ—‡STANDARDS
REFERENCED
โ–ฆSMART TOOLS &
CALCULATORS
โŒTESTING &
COMMISSIONING
๐Ÿ“คWORD/EXCEL/PDF
EXPORTS
โŒ‚LEARN, APPLY &
IMPROVE
โฌก3 ENGINEERING
DISCIPLINES
โ‡ฉINSTALL AS
PWA APP
Isometric cutaway of the MEP Virtual lab building showing power distribution, busbar riser, HVAC, fire alarm, lighting control, earthing and lightning protection, and testing and commissioning across six floors
39LIVE MODULES
5DISCIPLINES
40+CODES & STANDARDS
8REGIONS COVERED
3,800+Q&A AND CASES
2D-5DINTERACTIVE VIEWS
THE STORY

About MEP Virtual

MEP Virtual is a practical learning and engineering reference platform built from over 20 years of experience in building and infrastructure projects.

Engineering is more than calculations and drawings. It is about understanding how systems work, why design decisions are made, and how those decisions affect performance, safety, and maintainability. MEP Virtual was created to make that knowledge easier to access and apply.

Through interactive tools, technical guides, and design labs, the platform helps engineers, technicians, students, and project professionals explore MEP systems, compare design options, understand installation practices, and gain confidence in testing and commissioning processes.

The content and tools provided are intended for educational and reference purposes. Users should always verify information against project specifications, applicable standards, manufacturer recommendations, and local authority requirements. Final engineering decisions should be reviewed and approved by qualified professionals responsible for the project.

Our goal is simple: to make engineering knowledge practical, accessible, and useful for the people who design, build, and maintain the built environment.

EXPLORE BY TASK

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MODULE GUIDE

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MEP VirtualModuleTools & topics

What you can explore

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MEP VIRTUAL ยท SYSTEM MAP

Explore every module

Select a discipline, then expand a lab to see its tools and topics. Mechanical and Plumbing calculators currently sit inside the MEP Toolbox; the FAHU and HVAC training labs have their own workspaces.

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Explore all engineering modules

MEPVirtual is a free set of interactive engineering labs, calculators and reference tools for electrical, ELV, HVAC, plumbing and fire systems, built from real project work in the Gulf, Australia and New Zealand. Nothing is locked, nothing needs an account, and every lab shows its formulas, its assumptions and its limits rather than returning a number you cannot check.

Most modules run in 2D, 3D and 4D, and several go to 5D with cost and carbon, so you can watch a system behave, step through an assembly sequence or play a fault out in milliseconds instead of reading about it. Coverage runs from switchgear design and IEC 61439 verification, busbar risers, wiring diagrams, cable and containment sizing, earthing and lightning protection, generators, UPS, central battery systems and solar PV, through HVAC plant, diagnostics and commissioning, to CCTV, BMS, structured cabling, public address and fire alarm design.

Authority routes are covered for DEWA, SEWA, ADDC, AADC, EtihadWE, Kahramaa and SEC, alongside AS/NZS, IEC, BS EN, NFPA and ASHRAE practice. The Exam Lab carries timed licensing practice for DEWA, SEWA, Abu Dhabi, EtihadWE, Australian AS/NZS 3000, NZ EWRB registration and CPEng readiness, and the Copilot answers from a library of engineering questions and real site fault cases. Start with a module card, open “Explore inside” to see what a lab contains, or ask the Copilot if you are not sure where to begin.

Electrical & General Engineering (27 modules)

Busbar Riser Engineering Guide E-101

Size a riser to IEC 61439-6 or AS/NZS 61439.6 with derating, voltage drop and fault level, in 2D, 3D, 4D and 5D.

DEWA Design Tools & UAE Regs Reference E-102

Cable and breaker selector, switchboard builder and an independent regulations reference for DEWA, SEWA, Abu Dhabi and EtihadWE.

Switchgear & DB Checklist Suite E-103

Eight panel checklists, a DEWA power factor calculator, busbar and MCCB checks, with Word, Excel and PDF exports.

Electrical & ELV T&C Tracker E-104

Track testing and commissioning from first energisation to handover, with witness records and a printable report.

AS/NZS 3000 Practice Notes E-105

MEN earthing, RCD requirements, protection, isolation and bathroom zones explained for Australian and New Zealand practice.

Copper, Cable & Busbar Cost Virtual Lab E-106

Compare cable against busbar on cost, with copper price variation, containment allowances and installed rates.

Switchgear Price & Variation Tracker E-107

Build switchgear prices from device level and track variations against the contract scope.

Meter Lab - Testing Instrument Reference E-108

What each test instrument measures, how to use it safely and what the reading actually tells you.

UAE, NZ & Australia Engineering Regulations E-109

Compare the authority requirements across the UAE, Australia and New Zealand, with a project readiness check.

Earthing, Bonding & Lightning Protection Portal E-111

Thirty modules, fifteen calculators and thirty-eight drawings covering earthing, bonding, IEEE 80 grids and lightning protection.

Standby Generators & Emergency Power E-112

Generator sizing, step loads, fuel runtime, transfer schemes and the tests that prove them.

UPS & Critical Power Systems E-113

UPS topologies, battery sizing, autonomy, room ventilation and the maintenance that keeps autonomy real.

Electrical & ELV Codes & Standards Virtual Lab E-114

Which standard governs what, across IEC, BS EN, NFPA and AS/NZS, with compliance workflows for each discipline.

Next-Gen MEP Virtual Engineering Toolbox E-115

Calculators across electrical, HVAC, plumbing and fire fighting, with editable inputs and the working shown.

MEPVirtual Engineer Copilot E-116

Ask in plain words. It finds the right lab and tab, answers from the reference libraries and runs the calculation in 2D, 3D and 4D.

Cable Tray & Containment Virtual Lab E-117

Tray sizing, fill, spare capacity, supports and segregation, with 2D and 3D layouts.

MEPVirtual Q&A Knowledge Hub E-119

Thousands of engineering questions and answers across design, site and commissioning, searchable by trade and stage.

Solar PV & Renewable Energy Integration Lab E-120

String sizing against cold Voc and hot Vmp, inverter limits, roof loading and grid connection checks.

Clash Detection Lab E-121

Service coordination and clash detection with clearance rules, priority logic and reroute options in 3D.

MEP Specification Generator E-123

Build specification sections for electrical and building services, with options, standards and export to Word.

CBS & Emergency Lighting Virtual Lab E-124

Central battery systems and emergency lighting: battery sizing, autonomy, circuit voltage drop and a submittal checklist.

Unified MEP Design Labs E-125

Six linked design labs on one page: jurisdiction rules, cooling load, cable and breaker sizing, IEEE 80 earthing and drainage.

LV Switchgear Design Lab E-127

Design an MDB, MCC or distribution board with live single line, front GA, 3D model, 4D assembly sequence and 5D cost.

ELV & BMS Modules (7 modules)

Home Automation Virtual Control Lab ELV-301

KNX, DALI and home automation protocols, control strategies and the commissioning that proves them.

BMS Field Reference ELV-302

BMS architecture, controllers, field devices, point schedules and practical commissioning reference.

CCTV, Access Control & Security ELV-303

Security system architecture, access control, intrusion detection and the interfaces to fire and BMS.

Structured Cabling & Data Networks ELV-304

Copper and fibre cabling, network design, containment, testing and certification.

CCTV Video Surveillance System Lab ELV-305

Camera selection, pixel density and DORI, storage and bandwidth, SIRA requirements and handover records.

Public Address & Voice Alarm (PAVA) ELV-306

PAVA design, zoning, speaker selection, intelligibility and the standards behind each requirement.

Wi-Fi Heat Map Studio ELV-307

Import a floor plan, place access points, draw wall losses and study coverage, interference and PoE budgets.

Fire Alarm Modules (1 module)

Fire Alarm System Virtual Lab FA-201

Detection design, loop and addressing, battery calculations and a cause and effect simulator.

HVAC & Mechanical Modules (4 modules)

FAHU Live Lab E-118

How a fresh air handling unit works: filters, coils, heat recovery, humidity and controls, shown as a live unit.

MECHANICAL ยท HVAC ยท PLUMBING ยท FIRE FIGHTING

HVAC, Mechanical & Plumbing modules

Explore how equipment works, run practical calculations and review system design and site decisions.

๐ŸงชHVAC-401 ยท VIRTUAL LABHVAC Virtual Engineering & Diagnostics LabThermodynamics, primary equipment, piping and hydraulics, air distribution, controls and commissioning in 2D, 3D and 4D.Open HVAC-401 โ†—๐ŸงฐHVAC-402 ยท SIMULATORHVAC Equipment & Diagnostics SimulatorFCU, AHU, chiller and VRF units with their wiring and controls, fault finding and commissioning sequences.Open HVAC-402 โ†—๐ŸŒฌ๏ธE-118 ยท INTERACTIVE HVAC LABFAHU Live LabExplore airflow, cooling, filtration and heat recovery through an interactive fresh air handling unit.Open FAHU lab โ†— โš™๏ธE-110 ยท HVAC SYSTEM TRAININGHVAC Electrical Engineer Training LabWork through HVAC equipment controls, motor starting and operating sequences.Open HVAC training โ†— โ„๏ธE-115 ยท INSIDE THE MEP TOOLBOXHVAC CalculatorsExplore cooling load, duct sizing, ventilation and related calculations in the HVAC tab.Open HVAC calculators โ†— ๐ŸšฟE-115 ยท INSIDE THE MEP TOOLBOXPlumbing & DrainageExplore pipe sizing, drainage and water system calculations in the Plumbing & Drainage tab.Open plumbing calculators โ†— ๐ŸงฏE-115 ยท INSIDE THE MEP TOOLBOXFire Fighting CalculatorsExplore fire protection calculations in the Fire Fighting tab of the toolbox.Open fire fighting tools โ†— ๐Ÿ“šE-119 ยท QUESTION BANKHVAC, Plumbing & Fire Q&ASearch questions by trade and project stage in the MEP knowledge hub.Open knowledge hub โ†—
WORKED EXAMPLES

Work through an engineering example

Read the assumptions, calculation steps and practical checks before using a lab.

Busbar riser designcurrent, derating and voltage dropRead the guide โ†—Cable voltage dropunits, route length and distributed loadsRead the guide โ†—Central battery sizingenergy estimate and discharge-rate checksRead the guide โ†—FAHU coolingsensible load, latent load and airflowRead the guide โ†—Wi-Fi heat mapscalibration, coverage and site validationRead the guide โ†—All learning guidesevery worked example in one placeRead the guide โ†—
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ยฉ 2026 Eng. Mannan Maqsood | Engineering Excellence Through Interactive Labs

VERIFY ALL FIGURES AGAINST CURRENT MANUFACTURER DATASHEETS AND LOCAL AUTHORITY REQUIREMENTS BEFORE DESIGN SIGN-OFF.