Article
Turnkey MEP systems: why one full-cycle contractor pays off
Why design, supply, installation and commissioning of MEP systems by one contractor cut schedule and budget risks, and how to choose such a contractor.
Turnkey MEP systems means that one contractor handles the design, equipment supply, installation and commissioning of a building's engineering systems. On large projects this is far from the rule: engineering systems are often split between five to ten companies. One designs, another installs ventilation, a third does the power, a fourth the low-voltage systems and a fifth the automation. On paper, each has their own scope; on site, the most expensive problems appear exactly at the interfaces between them.
Where time and money are lost
Clashes between disciplines. Ductwork, cable trays, pipework and sprinkler lines all compete for the same space above the suspended ceiling. When different teams design and install each discipline, the clashes are found during installation, and work has to be redone.
A gap between design and supply. Equipment is ordered from a specification that does not always match the latest version of the design. The result is wrong sizes, extra items or delays caused by re-ordering.
Systems that do not work together. Each system may be installed perfectly on its own, but the building only works when they are connected. In a fire, the automation has to shut down general ventilation, start smoke extraction and pressurisation, trigger voice evacuation and release the doors on escape routes. This is an interaction between several disciplines, and it is what most often fails during commissioning.
Blurred responsibility. When something does not work, every contractor proves that their part is fine. The client spends time on disputes instead of opening the building.
How turnkey MEP delivery works
- Concept. Goals, budget, constraints and the first technical solutions.
- BIM model. Architecture, structure and all engineering disciplines are brought together in one information model; clashes are resolved before work starts on site. More in our article on BIM coordination of MEP systems.
- Supply. Equipment is purchased from the specification of the current model, directly from manufacturers and in line with the installation schedule.
- Installation. Site works run in sync with deliveries, with no idle crews.
- Commissioning. Individual and integrated tests, system balancing and training for the client's staff.
- Handover. As-built documentation, system passports and a building that works.
What the client gets
- One contract and one point of responsibility. A single team answers for the result, from the first sketch to commissioning.
- A predictable schedule. Design, procurement and installation are planned together, so deliveries arrive on time for installation and installation never waits for drawings.
- An accurate budget. Quantities are taken from the model rather than rough estimates, and specifications match the design.
- Systems tested together. Interaction between systems is designed in from the start and verified during integrated testing.
- Transparency. Weekly photo and video reports and online dashboards show the real state of the works.
How to choose a full-cycle contractor
- In-house designers and BIM expertise, not just installation crews.
- Experience on projects of similar scale and type.
- Direct contracts with equipment manufacturers.
- An in-house commissioning team with experience of integrated testing.
- Regular reporting and client access to up-to-date data.
- A complete set of as-built documentation at handover.
When it matters most
The full-cycle model pays off most on complex projects: high-rise buildings, sports arenas, healthcare facilities, data centres and the reconstruction of buildings that must stay in operation. The more systems a building has and the tighter the schedule, the more every interface between contractors costs.
Frequently asked questions
How is a full-cycle contractor different from a general contractor?
A general contractor is responsible for the construction as a whole and brings in subcontractors for each discipline. A full-cycle MEP contractor designs, supplies, installs and commissions the systems itself, so there are fewer interfaces and responsibility is not split.
Can one contractor take on only some of the systems?
Yes. You can start with one discipline, such as ventilation or low-voltage systems, and extend the scope as the work progresses. Even then, design, supply and installation of the chosen systems follow one schedule.
What does MEP commissioning include?
Individual equipment tests, integrated testing of systems working together, balancing of ventilation and hydronic systems, automation set-up, training for the client's staff and preparation of as-built documentation.
What documents does the client receive at handover?
As-built documentation, test reports, system and equipment passports, operating instructions and, if the project was delivered in BIM, the as-built information model.
Sobko Group delivers turnkey MEP systems, from HVAC, power and low-voltage systems to fire safety, automation and building management, from design to handover. To discuss your project, send us a request.
