MEP today

What happens when water, wind, earth and architecture begin to work as one system? In this episode of MEP Today, I return to Abarkuh in central Iran and follow the story beyond the Nabadan Qanat. Beneath the historic city lies a network of qanat routes, rock-cut chambers, payabs, water storage and underground passages extending across an estimated 60 hectares of the historic fabric. Above ground,...

TM59:2026 introduces significant changes to the way overheating risk is assessed in UK homes, including operative temperature, new occupancy profiles and formal recognition of elevated air speed from ceiling fans. In this episode of MEP Today, I look beyond the headline changes and explore some of the practical questions that arise when the methodology is applied to real buildings. How should oper...

How can life survive for thousands of years in a cold desert? In Abarkuh, central Iran, a cypress estimated to be around 4,000 years old became the starting point for a much bigger question: how did people, buildings and landscapes survive in such a dry and demanding climate? This episode follows the story of the ancient Nabadan Qanat part of a wider network of qanats across Abarkuh and explores h...

CIBSE has published TM59:2026, almost nine years after the original overheating methodology was introduced. But what has actually changed for designers and building-performance modellers? In this episode of MEP Today, I compare TM59:2017 with the new 2026 edition and look at the changes that can directly affect an overheating model, including the revised bedroom criterion, window-opening controls,...

How did people create comfortable spaces in Dezful when summer temperatures could exceed 45°C , without chillers, refrigerants or air-conditioning? In this episode of MEPtoday, I explore the Shavadan, a traditional underground space that uses depth, thermal mass, natural ventilation and human adaptation to create a more stable indoor environment. We look at temperature, humidity, mean radiant temp...

Free Basis of Design pack → meptoday.com/starter-packs Two engineers. Same qualification, same software — sometimes even the same Excel file. One stays a calculator for their whole career. The other becomes the person who makes the decisions and helps the company grow. The difference has almost nothing to do with the maths. In this first episode, Mohamad Tabatabaee - Chartered MEP Consultant with...

In this episode of MEP Today, I discuss some of the industry feedback and practical concerns around the TS1 draft version for heat networks. The discussion covers localisation of data, operational behaviour, document hierarchy, thermal storage, manufacturer concerns and how changing occupancy patterns - particularly after COVID and hybrid working — may impact hot water and heating demand assumptio...

Rethinking Heat Network Design with TS1 (intro)

This episode explains how defining the Basis of Design early helps avoid major BCW and DHW sizing issues. Learn about diversity factors, flow rate methods, and the codes that shape reliable hot and cold water system design.

In this MEP Today episode, we break down DW 172: Commercial Kitchen Ventilation — the key standard for designing safe and efficient systems. Learn about airflow, hood design, filtration, and compliance tips for high-performance

Early clarity on BOD Ventilation sets the foundation for every successful project. In this episode, we discuss how updated BCO 2023 and CIBSE Guide A guidance is reshaping design practice — from realistic occupancy assumptions to measurable IAQ targets. Better decisions at the concept stage mean fewer changes, healthier spaces, and verified performance.

Series two focus is about the exchange information platform.

Review the specilaist feedback about the design stage 

Career anchor and impact of the first job on the professional career journey

Career anchor and impact of the first job on the professional career journey

Career anchor and impact of the first job on the professional career journey

Career anchor and impact of the first job on the professional career journey

Career anchor and impact of the first job on the professional career journey