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Which Standards Govern Operating Room Design and Layout

Updated 14 October 2026 · 4 min read

Operating room design standards are not a single document. Hospitals in the UAE normally work from a combination of local authority guidance, international health facility guidelines and engineering standards for ventilation, gases and electrical safety. This article explains how FGI, the UK HBN and HTM series, DHA and DOH requirements fit together, and what they usually mean for room size, clearances and ceiling-mounted equipment.

How the layers of guidance fit together

The first layer is the licensing authority. In Dubai, facility licensing is handled by DHA, and in Abu Dhabi by DOH, with MOHAP acting federally and in the northern emirates. These bodies publish facility requirements and review drawings, and their current text always overrides a general reference. Confirm the version in force with the authority or your licensed consultant before design is frozen.

The second layer is the international planning guideline that the authority or the consultant uses as a benchmark. The US FGI Guidelines and the UK Health Building Note 26 (facilities for surgical procedures) are widely cited, and the International Health Facility Guidelines are often referenced in the Gulf. The third layer is engineering standards: IEC 60601-1 for electrical safety of equipment, ISO 7396-1 for medical gas pipeline systems, HTM 02-01 for medical gases and HTM 03-01 for specialised ventilation, plus ISO 14644 for cleanroom classification where it is specified.

Room size, clearances and circulation

Guidelines set minimum clear floor areas by procedure class, and the figures differ between FGI and HBN 26, so a designer should state which document is the basis of the brief. Rooms for orthopaedics, cardiac surgery, robotics or hybrid procedures need more floor and more ceiling height than a general theatre, because more people and more equipment surround the table.

Clearances matter as much as area. Allow free zones around the table for staff and for mobile equipment such as C-arms, anaesthesia machines and instrument tables, and keep door swings and trolley routes out of the sterile field. Ceiling height must accommodate the surgical lights, pendants and, where used, laminar airflow canopies with their own plenum depth.

Ceiling equipment and structural requirements

Ceiling equipment is where the standards meet the building. Pendants, suspension arms and lights hang from a structural support plate or frame, so the slab or steel above the false ceiling must be designed for the stated loads before the first fix. Ask the equipment supplier for the load and fixing data of each item and pass it to the structural engineer in writing.

Pendants also bring gas, power and bonding into the room, so their design must follow the applicable parts of IEC 60601-1 and the medical gas standards used on the project. Lojer Solido pendants are configured to order with the required electrical and medical components, and their surfaces have no visible fixing screws, which supports the cleaning regime that guidelines expect.

Ventilation, finishes and services

Most guidelines specify supply air change rates, pressure relationship to adjacent spaces, filtration and temperature and humidity ranges for operating rooms. The exact values vary by document, so take them from the standard named in the project brief and do not mix figures from different sources. Diffuser layout must be coordinated with lights and pendants, since arms and canopies can disturb airflow over the wound area.

Finishes should be smooth, seamless and tolerant of repeated cleaning. Coordinate gas outlets, electrical points, data and equipotential bonding at design stage, and see our guide to operating room design and layout for a practical sequence of decisions.

A practical checklist for the project team

Use the standards as a checklist during design reviews rather than as a single pass at the start. Write the governing documents into the brief and record any agreed deviation, so that the authority, the consultant, the contractor and the supplier work from the same list.

  • Name the licensing authority and the guideline used as the planning basis.
  • Fix the room class and the minimum clear area for the planned specialties.
  • Collect load, fixing and service data for every ceiling item before the structure is designed.
  • Define ventilation and pressure requirements with the HVAC designer.
  • Plan commissioning and handover tests for gases, electrical safety and equipment.

Getting equipment data early

Early technical data saves redesign. Beckfinity can supply manufacturer drawings and specification sheets for ceiling equipment on request, and our team can discuss installation requirements with your consultant. Contact us when the brief is still open.

Frequently asked questions

Is there one mandatory standard for operating rooms in the UAE?

Not a single universal document. Facilities follow the guidance of the licensing authority, such as DHA in Dubai or DOH in Abu Dhabi, which may reference international guidelines. Always confirm the current requirements with the authority.

What is the difference between FGI and HBN 26?

Both are planning guidelines for surgical facilities, FGI from the United States and HBN 26 from the UK. They define spaces and minimum areas differently, so the project brief should name which one is used.

Where can I find operating room design standards as a PDF?

Official guidelines are published by their issuing bodies, and some are paid documents. Use the current version from the original publisher or your authority rather than unofficial copies.

Does ceiling equipment affect compliance?

Yes. Pendants, lights and arms affect structural design, airflow and electrical and gas safety, so their data must be included in the design review.

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