Tag: consumption

  • HPH316 : Why we must embrace sufficiency – with Lloyd Alter

    HPH316 : Why we must embrace sufficiency – with Lloyd Alter

    Lloyd Alter explains how we can take personal actions to address our own carbon footprints, and why it’s more important to do so than ever.

    Interview with Lloyd Alter

    Lloyd Alter is an eminent writer at TreeHugger, a teacher of sustainable design at Ryerson University, and has spent many years working in the built environment field. But for his latest book,”Living the 1.5 Degree Lifestyle”, he has taken a wider view on the behavioural changes we can all make to lessen our carbon footprints and impact on the planet.

    Personal actions matter

    Lloyd took umbrage at a headline in the Guardian newspaper in 2017, that said 100 companies are responsible for 70% of emissions. By seemingly laying the blame with the oil companies it took away personal responsibility, and this was something he fundamentally disagreed with. As individuals, we have choices and are responsible for consuming what the oil companies are selling. It’s the consumption, not the production that is the biggest issue.

    According to a study by Aalto University in Finland, The 1.5 Degree Lifestyle, 72% of emissions come from the choices we make, such as driving and eating habits, and it is these decisions that drive consumption.

    The target average carbon footprint is 2.5 tonnes by 2030

    Around the same time that Lloyd was reading into the idea of the 1.5 degree lifestyle, the activist and London mayoral candidate, Rosalind Readhead, was trying to live a lifestyle with the carbon footprint that we’re going to have in 2050, of one tonne of carbon per year. While he felt that would be impossible to manage, he did think he might be able to achieve the 2030 target and had agreement with a publisher to write a book about it.

    “So that basically started the project of what can I do to produce less than 2.5 tonnes of carbon emissions for an entire year.”

    An example of how Lloyd was tracking his carbon footprint

    It is far easier to achieve in certain locations

    By virtue of living in Toronto, Lloyd was already at an advantage over other locations when it came to the impact of his electricity usage. What with its nuclear and hydroelectric power generation, rather than coal-fired plants, the power there is almost entirely carbon-free.

    He also lives in a suburb where he can collect groceries on foot, so not driving for a year becomes easier.

    This is all in stark contrast to more remote areas just 100 miles away that have to rely on coal power, and vehicles for getting provisions.

    Our street design should encourage walking, cycling and using public transport

    Without sufficiency, efficiency is lost

    One of the key things Lloyd has learnt through this process is moderation. How much is enough? By looking at life through a lens of sufficiency, you can ask yourself the questions such as do I need to build as big, or buy as much, or drive to the shops when perhaps walking would be better?

    A big surprise for him was how, after gas usage, his Apple devices were the biggest contributor to his carbon footprint. Although they’re designed to use very little electricity, when embodied carbon is taken into account an iPhone alone releases 80kg of carbon in its manufacture.

    Lloyd has always loved his Apple gadgets

    “When you look at everything through the lens of embodied carbon, it changes everything.”

    Lloyd now questions for example, whether there is a need to keep upgrading mobile phones when invited, when they are still perfectly efficient. And whether a new electric pickup truck seems such a good idea when its 40 tonnes of upfront carbon emissions is equivalent to nearly a lifetime allowance under the 2.5 tonnes that he is allocating per year!

    With regards to housing, you could build a house that’s really big and efficient, but because it’s big it’s using more energy than a smaller house would. And although polyurethane foam has the best R value, it has a huge upfront carbon cost, especially when compared to cellulose or straw. This is why it’s important to build sufficiently, with the right materials that have the low embodied carbon, and that are relatively local.

    Low rise, multi-family Passivhaus apartments in Munich

    People’s perceptions have been changed by the energy crisis

    Lloyd explains that two years ago when he spoke about Passivhaus, he had to talk about comfort and health, because energy was so cheap that putting in more insulation didn’t pay. However, with spiralling energy costs people are far more worried about building for resilience and ensuring that the house needs to use as little fuel as possible.

    “If you’ve got a given budget, and you build better with more insulation and higher quality windows…you’re going to have to probably build a little bit smaller.”

    Living sufficiently isn’t worse, just different!

    An automatic reaction to thinking about this lifestyle approach, is that it will be less enjoyable, but Lloyd explains that this doesn’t have to be the case. Whereas he used to enjoy snowboarding, the reality was that he had to drive for three hours in order to get electrically winched up a hill, and slide down artificial snow made with electricity and water pumped up from the lake. He now straps a pair of cross country skis to his ebike and heads for the nearest park.

    He is also now eating a lot less red meat and trading it instead for more white meat or vegetarian options. He’s not missing the steaks as now his diet is actually more varied and interesting.

    He doesn’t feel he’s trading things for a more marginal experience, he’s just trading them for a different one.

    The one area he does feel that he will struggle with though, is air travel. The US and Canada don’t have such good rail links as the UK and Europe, but the cheap airfares in Europe also make hopping on a plane for a weekend trip very attractive to many people. He thinks this will be the hardest thing for people to adjust to.

    Lloyd has always enjoyed travelling to Portugal for their Passivhaus conference

    “And we’re just going to have to change the way we do it, you know, no wild little weekend trips. But maybe you pack them together, take two weeks, go somewhere and really enjoy it and amortise that flight over a whole year worth of carbon.”

    It’s far easier to make the changes if you realise what your carbon footprint is

    Lloyd has had many comments from people who have read his book saying that it’s changing the way they live, because these were things they just hadn’t thought about before.

    For Lloyd himself, one of the greatest joys has been replacing many of his car journeys with using his ebike, and he believes these could have the biggest impact in suburban areas. Other people are sharing his views and he talks of people telling him they’ve replaced their second cars with ebikes instead.

    He also says that you don’t have to be rigid about your self-enforcement. If the single biggest thing you can do is cut back on eating red meat, then great, but that doesn’t mean you can’t have the occasional steak.

    Personal actions also set an example to other people. Using the parallel of how smoking has become gradually more socially unacceptable over time, he hopes the same will become true of our carbon footprints.

    Privilege can be a blind spot

    Lloyd understands that he is in a position of privilege to have been able to make the changes he has without it being too much of a disruption to his life, but he appreciates that’s not possible for everyone.

    “That’s the hardest thing that we all have to look at. It’s not to think, well, the example that I’m setting is something that works for everyone. We have to change society to the degree that the structure is there, so that people do have choices that they don’t have to choose between food and heat in their houses. We have to make it more equitable and more fair.”

    Find out more

    Visit the website of TreeHugger

    Follow Lloyd Alter on Twitter

    Purchase a copy of Living the 1.5 Degree Lifestyle

    Transcript

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  • HPH261 : Reducing construction waste and reusing materials – with Duncan Baker-Brown

    HPH261 : Reducing construction waste and reusing materials – with Duncan Baker-Brown

    Duncan Baker-Brown from BBM Sustainable Design explains how we can reduce waste on our projects, given a little more time and with a different approach on site.

    With the construction industry being such a big contributor of annual waste, he also shares strategies for how we could transform things if we treat buildings as material banks, which are built with deconstruction in mind.

    Interview with Duncan Baker-Brown

    Duncan Baker-Brown and Ian McKay set up BBM Sustainable Design 25 years ago. The company has a passion for finding environmentally friendly solutions to architectural challenges, and carries out research projects to inform his practice, and vice versa. Duncan also teaches at the University of Brighton.

    An area of ‘protected’ rainforest is being mined for its resources

    Reducing consumption is crucial

    The construction industry is a huge consumer of raw materials, accounting for around 50% of those that are mined across the world. The resultant deforestation and destruction is a key reason why Duncan believes we should be trying to consume far less.

    Although on an international level many leaders seem to be ignoring the crisis, Duncan sees hope on a more regional level where groups and states seem to be taking matters into their own hands and making commitments to address climate change.

    “There’s no such thing as waste, it’s just stuff in the wrong place”

    Duncan defines a circular economy as being a world where one area’s waste, is a valuable resource for another area.

    The UK construction industry is responsible for 60% of annual waste

    With 600 million tonnes of things being bought in the UK every year, 200 million tonnes is thrown away. Of that waste, 120 million tonnes comes from the construction industry.

    Traditionally, resources are thrown at a site in order to keep it busy and not have delays while waiting for materials. This means a tendency to over order on materials by around 10% for wastage, resulting in around 10-15% of everything arriving on site being thrown away. With this cumulative effect on site, it means that for every six or seven houses that are built in the UK, one house worth of waste will go to landfill or incineration.

    Instead we should only be ordering the goods that are needed, planning the projects better so there aren’t periods of delay, and value the materials that actually arrive on site.

    We could also be shopping in a much smarter way. BBM do a resource map for their projects where they look within a 10km or so radius of the site and work out what resources might be nearby. That could mean a factory producing something, a woodland that’s managed for timber, or even a building site that is being deconstructed where they can salvage materials.

    “But it takes a different mentality and sensibility. And the big deal is the time to educate yourselves around the potential of a circular economy to provide a better product at the end of the day, and being able to be beneficial to the environment as well.”

    The Waste House

    In 2014, BBM completed the Brighton Waste House, an experimental project that was built by students under the guidance of the university. Initially the aim was to build a high performance house out of the material that normally goes to landfill or incineration. During the design and development stages they partnered Freegle UK, whose founder Cat Fletcher, suggested they raise awareness of the things that are thrown away on a daily basis, not just in the construction industry but in our everyday lives. It changed from being a project that proved construction waste was valuable, to a project that became more of a thought-provoker.

    The house was subsequently designed as almost a container for the waste products: a vessel for holding lots of products that had been designed without an end of life strategy. They used the plastic waste products as low grade insulation, and included 4,000 VHS tapes, and 25,000 toothbrushes (all unused) that were collected in just four days from Gatwick Airport!

    With 90% of the material used being other people’s waste, it performs to around Passivhaus standards.

    While they proved that it can be done, Duncan says it would take an experienced architect or contractor to understand the potential for using second hand material. With issues around insurance and guarantee of second hand materials, at the moment we don’t have the legislation or networks to support everybody doing it easily.

    Duncan certainly isn’t saying we should be using waste plastic in our homes, and if he did the project again he would use a resource map for construction and other materials to make a building that was a material store for the future.

    “What I would like to do is a project where maybe we find a building that is unwanted, and we deconstruct it and then reconstruct it with new owners, new use, new site. And the architectural challenge, apart from the deconstruction and reconstruction, would be how to tweak the building so it accommodates the new criteria – our new standards for insulation and energy production and that sort of stuff.”

    Lendager Group have reused an old brick facade

    Think through how you can limit waste on a self build

    If you’re doing a self build project, the best thing you can do is look to reduce your waste on site to zero. By using a pre-fabricated build system for example, you will only have delivered what you actually need. A further benefit is that things that arrive flat-packed and screwed together, could ultimately one day be unscrewed and reused.

    Avoid using the wet trades as far as possible too. As soon as you start mixing things with water there tends to be far more waste.

    Buildings can be material stores for the future

    On a large scale looking at financial industry buildings, Duncan explains that many are only designed with a business plan of perhaps 25 years, after which time they’re demolished and a new flagship building put in their place.

    He describes a project in Amsterdam by ABN AMRO bank. It’s an £18 million Circle Pavilion project, which has been designed so that when it is deconstructed in however many years time, the materials and components are assets that can be sold off or reused on other projects. As well as making financial sense it will avoid sending all the waste to landfill.

    Duncan sees a future circular economy having two spheres: a biosphere and a techsphere. The biosphere being everything that is made of natural materials that can be reused a number of times before they eventually become compost for the natural world. The techsphere incorporates those things that won’t decompose so will need more work to establish how they can be designed to be deconstructed and used again.

    Corporate responsibility is needed for end of life strategies

    Duncan believes there needs to be corporate responsibility of manufactured items, so when something comes to the end of its life, it becomes the responsibility of the manufacturer, not the end user.

    This fits in with the idea of things being material banks, where at the end of their life they would actually be an asset.

    The idea of lease agreements is gaining traction, particularly in Europe. One example is Philips who provide leased light fittings to buildings. The benefit to the end user is that Philips are likely to be supplying them with their most robust fittings because they don’t want to be repeatedly coming out to change the lightbulbs. And from Philips perspective, at the end of their lifespan they are able to take back the fittings and use the parts to make new ones.

    “And from a design point of view, and that’s whether you’re designing a light fitting or a phone or a building, it needs a different way of designing. You need to think about it differently, because you’re thinking about how to take apart the thing that you’re assembling as you’re designing it.”

    Differences can be made on self build and large construction scales

    On a self build scale, websites like Freecycle and Freegle can be a source of finding, or recycling materials. On a general construction industry level, Duncan says there will need to be changes to the buildings regulations to demand and facilitate reuse of materials.

    While some of the large contractors are already moving surplus materials internally to other projects, Duncan thinks it can only be a couple of years before large contractors will start swapping with each other.

    “I’m trying to communicate a really clear message because a lot of people are going to be crunching carbon numbers etc and trying to be carbon neutral and all that sort of stuff. And I just think that’s really difficult I think to understand how to really do it, and I think it’s a lot more straightforward just to say carbon is one of the things that we’ve got to reduce, but we’ve really got to reduce the amount of water we use, the amount of energy we use and the amount of materials and components that we use when we’re designing, building, inhabiting, maintaining, and ultimately deconstructing the built environment that we live and work and play in.”

    Find out more

    Visit the website of BBM Sustainable Design

    Follow BBM Sustainable Design on Twitter

    Read about more examples in Duncan’s book

    The Re-use Atlas

    Transcript

    Please connect with me

    Subscribe, rate and review the podcast in iTunes

    Rate and review the podcast on Stitcher

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