“When the poet John Lydgate wrote ‘you can please some of the people all of the time, you can please all of the people some of the time, but you can’t please all of the people all of the time’ he probably wasn’t referring to workplace temperature control.
However, there may be no better way of describing the challenge of maintaining a perfect environment in modern buildings.
The way that each person experiences thermal conditions is different, and there’s no simple explanation of ‘too hot’ or ‘too cold’.
So, when taking a holistic approach to building design, the aim is to consider all of the factors that affect thermal comfort in the workplace, and to ensure that the majority of people experience comfort for a majority of the time.
With colder winters to endure, buildings in the UK are designed to retain warmth. Mainly built from brick, our buildings store heat and slowly release it over a period of time, but with our summers getting warmer, they’re becoming increasingly unreliable at keeping us comfortable, both during and after a heatwave.
A recent study discovered that office productivity drops by 4% when environments are too cold, and by 6% when the office is too hot.
But the effects could go even further, potentially leading to health risks. Looking beyond Sick Building Syndrome, people may start to avoid certain areas of the office that are too cold (potentially to the detriment of their work) or may not wear appropriate personal protective equipment (PPE) if they’re too hot.
When looking at thermal comfort, the Health and Safety Executive outlines six basic factors, and it’s the combination of these factors that affect a person’s perception of their comfort.
The WELL Building approach to making the majority of people comfortable for the majority of the time is to use these parameters to create a model for predicting whether people will be satisfied.
Once these satisfactory conditions are established, they need to be met for 98% of the building’s occupied hours of the year.
That means the designers of a WELL Building need to prove that the sort of weather extremes the building wouldn’t cope with, are expected for no more than 2% of the year.
A more advanced standard included in the WELL criteria assesses humidity control, while looking at the ability of individuals to adjust their own environment.
The control of air speed, air temperature and radiant temperature can drastically improve comfort levels, therefore including policies such as a flexible dress code can have a significant effect on granting more control over personal preferences.
The key to achieving optimal thermal comfort is having the right equipment in the right place, and for the right purpose – so ensuring you have an experienced designer is vital.
By looking at building design with a holistic approach, we can get much closer than ever to pleasing everyone, all of the time.
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