Oh no, it had to be my comment, so pity 😂

Its called a safari roof landrover did it on their vehcles 50 years ago all but a little cruder due to the vehicle shape.

I was just about to ask about that, I went back over that section a few times to see if I missed you referencing temperature caused by the sun's angle with the ground

Good, solid, practical design work! About the double roof, this idea has been around for centuries, many cultures have figured it out. I've seen it done with desert tents, a large tarp spaced above the tent. Around forty years ago there was a medical office complex in Tucson, Arizona USA that did this with a stressed concrete roof above multiple independent single story buildings. It looked like a huge tent on multiple poles. The roof was on tall pillars, at least a ten foot clear space of free moving air above the buildings. The roof was large enough that the sun never touched the building walls. I was there for a dental appointment on a miserable day in August, temperature over 100F, and walking under that high roof the air was easily 15F cooler. Sadly, the complex lost the battle to modernization and real estate inflation. It was all torn down and a big ugly multi-story tower was built.

The hard part is to figure out hot to make it simple. When you see the design and people say: ahh this is so simple...yeah when you see it working, it is 😂

Exactly. I'm going to try to design some cool new, walkable towns with everything like this in mind.

Good point! The truly smart part is working with Nature instead of against her.

Using local materials too.

On us Mexico boundary they build houses with dome roofs with oculus small window which serves as hot air evaporative.

I live in the desert southwest near the border with Mexico, and every year in the Spring and Fall we are treated to very heavy wind storms. We often see sustained winds of over 50 mph during the day that go on for many days, and an over-shelter like the one in the video would have to be very strong to withstand the winds here. We do use woven plastic mats stretched between poles like heavy dining flys over outdoor structures like playground sets and carports, but they only last a few years before they need to be replaced. Also, passive solar cooling stopped being a thing here when everyone got electricity. I'm not saying that passive solar cooling wouldn't be a good thing down here, just that it was cheaper to use existing building designs and hardware common in the rest of the U.S. than it was to design unique buildings for this region. Don't forget that price is always an important factor in building construction. It was cheaper to do what was already the standard in other parts of the country, and just run the evaporative cooler during the day to keep things cool. P.S. In the past we made buildings here with thick walls made from adobe, and they were very good at maintaining a liveable temperature inside them, but they also required a lot of upkeep, and the nature of the material limited what you could do with it.

@@whistlingsage9817 wind speed is good at your end so why not you try wind turbine. it will spin all day/night and contineous source of electricity. if your weather is hot only and not humid than evaporative cooling is best n cheap for you.

Many camp resorts in Florida use this

It's not uncommon for people to have a fully covered porch or an "RV port" over a single wide. Another common thing I see in the desert is a second steel roof to act as a radiant barrier. This is often done as part of roof repairs after the spring winds.

It wins a dubious award only open to Muslims?

I agree, too often, the award winners are impractical, artsy, space wasting works of ego and stupidity.

Frank lloyd Wright houses have been working like this since the 40s and John lautner also. FYI this isn't that new, it's just people actually pay attention to it now

@@trainwreck420ish exactly, its new to many not to history. Same with WHF(whole house fans) 50 year old tech making a huge comeback. People just dont know what it is and i remind them its tried and true NOT new

​@trainwreck420ish Do you have any resources that you recommend to learn more about passive heating/cooling? Books, websites, articles, physics concepts, literally anything. I'm going to build my first home on a budget next year, and looking to explore ways for passive heating/cooling. I'm very interested in geothermal.

@nullobject7966 yea, here in KZfaq. There's thousands of hours of architecture and especially mid century modern architecture. I am biased towards frank lloyd Wright and John lautner as mentioned. The two wrote books about organic architecture and the reasons for building such a way. Also Albert Frey and Kendrick Kellogg are awesome as well. There's a quincy Jones Richard neutra and meis van Der Rohr. Try to find mid century modern architecture and stuff built before the widespread adoption of ac. Also Africa has been living for thousands of years without having air conditioning. Also Muslim countries have awesome technology for beating the heat. Towers and domes aren't just for looks.

​@@nullobject7966Wow! You have just asked a deeper question than you probably realized. Do you just want to know for your one house, or do you really want "to know"? If one house, what climate? Auburn University' Rural Studio might be a good place to start.

I love Francis Kéré s presentations especially in german they have this positive and enthusiastic energy

Locals must be white. Whites were making bricks in the video.

Yes, and by working with Nature!

Thank you for that observation! I was wondering why on earth the architect would want to use a heat absorbing material instead of a heat reflecting one for the wall of this building. So, it’s about regulating temperature, not just cooling. That makes it even more interesting.

@@jmhatyoutube6283 It's about cooling. The walls cool down at night and absorb heat from the air during the day, which cools down the air. It could've used a reflective material on the outside, but who wants a reflective building? It's also in the shadow so I don't know how big the difference would really be. As you could see in the graph, it doesn't really get cold at night. Even in the coldest nights, it's still 15 degrees Celsius outside and it's gonna be a lot warmer inside.

This is a great idea!

And perhaps you could sell any excess energy produced to power company.

Good idea but.... Roof fires...

Mobile homes are the worst type of housing. Why make a carport for a mobile home when you can just build a real home without wheels under it and a design in all of the natural ventilation and insulation? Mobile homes make IKEA furniture look like fine-quality furniture. Nobody should permanently live in temporary housing.

I’ve thought of that for parking lots at the airport. Miles of usable sunspace.

They should do experiments to see if the can handle long term water saturation, if so you could wet the wall and it would be 10-15% cooler. I've been interested in passive homes since 1967 watching real hippies building a house of mud bricks, just as a interest over the years. I tiled swimming pools in the SW USA, thousands of them, in 122 degree F, near the end I would put up a 40'X20' 70% shade, like a knit nylon, and even had 12+ tiny misters. And only swam-coolers at home. I live past the 45th now and think why people don't build houses alike the arcane Russians with a central huge mass of masonry for the wood-stove/oven. The thinks I think of baking or freezing...

This roof structure might not stand up to the storms we get in tornado alley. I would love to see thermal mass get more attention though. Earth sheltered buildings are much safer in a tornado as well benefitting from the thermal mass.

@@beth8775 I visited an “Earthship” rammed earth house in New Mexico during August, about a dozen years ago. It was 91 outside and 73 inside, mid afternoon.

Well "...we pay no attention..." because capitalism wouldn't have it any other way. There's 300 million Americans, get one dollar from each of them once and you're wealthy. Get one dollar (or more) profit from each of them every month and you can own a television network and some Senators.

And what about strong winds? 🤔🤔

Current heat wave is well past that. Any future design will have to take climate change into account.

Fortunately the solution comes in the same package as the problem. The same sun that creates the heat provides also the solar energy to run AC. With today’s technology, cooling is a much smaller problem than heating.

Yes! Diébédo Francis Kéré has gifted this community with a beautiful school building ☮️ I hope more can be built to benefit more children!

Why didn’t they add more greenery and tree water combinarn*

They may not grow

@@vsubhutiit’s arid. They probably didn’t have much water

If they can plant trees when and everywhere they wanted, it won't be a 'hot semi arid climate'

Yeah, looks like someone found a pop article online and just read it. Very scarse on details and no follow up whatsoever. According to the video this project won an award in 2004. *That’s 20 years ago!* well, if the design is so effective it must have spread far and wide, right? Where’s the photos of all the other buildings that have been built on the same principle? Are there any? Perhaps what works great on paper is not all that great irl?

Click bait. I live in the desert. 95 is considered a balmy day - LOL. First of all, the people in Burkina Faso live in primitive conditions - the little relief they feel from the heat is different than people who are used to living in a country like the U.S. Secondly…..humidity, or lack thereof, plays a big difference. On a 8% humidity day here, even 95 doesn’t feel bad…..during Monsoon season that same temp can make you feel like you want to die. I have lived here since 1978. I have electricity but also am set up for off grid. I have compound style houses…..each is 10x12. Double layered roof with air space in between layers. Top layer is covered in liquid silicone roofing material - three coats I made evaporative coolers that run off a 100w stand alone solar system. Fan is 60w….pump is 20w. Standard 100A lithium batteries. My little houses are normal wood construction, wool inside wall insulation. 36x40” windows on three sides. On a 110 temp day, with low humidity…..inside each house is about 75 tops. I often have to wear a sweatshirt till mid morning.

@@Elementaldomain 👍Good I did not say "click bait." No problem. I believe,double roof with air flow in between, and maybe a sod topping and grass with automatic night watering if water is freely available. Heavy black plastic used for water sealing concrete slabs and walls, or over a timber, timber and iron or reinforced concrete slab all with plastic waterproofing, Consider reinforced concrete pillars and cement block walls with steel rods and infilled with cement for wall strength. Then mound earth up to the inner ceiling roof at an angle of 30° from the ground, grassed, the walls plastic waterproofed. Door and widows double glazed gas filled. I cannot do the engineering safety calculations. Imported steel and concrete are very expensive compared to local timber. Different tooling and jigs or boxing adds expense. 12' X 12' or 3.6m X 3.6m is the concrete slab module and 4' X 4' or 1.2m X1.2m is the strong timber floor stump spacing module. Wall timbers are at 2' or 600mm centres spacing. So 12' X 12' module are cheapest to build. Consider 12' X 18' living plus 6' X12' wet room Shower, basin, toilet, washing machine or trough. The kitchen sink and cooking area along the 12" inner wall on the opposite side to the wet room. All plumbing close. In simple timber cottages for a couple, the wet room was separate to the house for odour exclusion. We used to go to the toilet outside, and eat inside. Now we cook and eat outside and go to the toilet inside. The Asian wet area and eating open air downstairs and sleeping upstairs with the cooler evening breeze works but it requires an expensive staircase, and dust and no security from people. Insect and animal life is a factor to consider, Families live side by side, and they have watch dogs, if a dog bites you and you kill it you can go to jail. Every system has its strengths and weaknesses. I admire your building initiatives. Well done, 👍✅

maybe not in the 70 degree range, but the heat-load is greatly reduced, and that means less A/C is needed to cool to the desired temp! :)

@@GlueTubber Exactly what I was saying. Is it 30° cooler or 5°. Orientation of a building with respect to sun exposure can do a lot. Trees can produce almost miraculous results. Just wondering about the before and after.

@@keithsuggs7935if you live in the desert, like I do, shade makes a lot of difference. I have double layered roof, airspace in between. Liquid silicone material on top of roll roofing. I would venture to say the temp drop inside their school is no more than ten degrees. A ten degree drop plus better shading via the Venturi roof helps….but people have to realize hot is still hot and those people are used to it, so the little difference makes a bigger difference for them rather than people who are used to more comfort in the states. It’s all relative…..😂

Zero hurricanes there

Glen Murcutt has done similar work decades ago in Australia's Northern Territory, where cyclonic wind forces are a major consideration. It's a different climate with different solutions, but it can work. Look it up.

Theoretically the upper roof would be pushed down onto the lower roof because of the low pressure between them caused by the Venturi effect. Now whether that's really true, IDK. They'd have to measure the pressure above and below the upper roof during windy days.

@X4R2 I was thinking the other way around. Higher airflow above the upper roof resulting in low pressure and slower speeds below the upper roof resulting in high pressure. The pressure difference resulting in the air below the roof going from high pressure to low pressure causing lifting of the roof. Like an airplane wing.

@@jasondoust4935Glenn Murcutt sadly still not respected for his wonderful designs. I attended a lecture of his years ago - very inspiring 👍

Yes. Desert dweller here, liquid white silicone roofing material, three layers thick. It’s not that cheap white stuff you buy at Home Depot, it really is thick.

Yeah….I laughed at that. I live in the High Desert now, but used to live in Palm Springs. I would run at night and it was still 120 at midnight. 😂

Very glad you like it! More to come 💪🏽

I believe the phrase you’re looking for is, “Keep it simple, Stupid!”

Well spotted! The C was a mistake! Those are meant to be the angles of the sun ☀️

You should also mention that the whole point of the high air speed Venturi is to cause a low pressure zone that will literally suck hot air up through the perforated ceiling.

lol, those are degrees celestial!

Yeah. Without this data it's only bla bla bla

I was hoping to find that information here in the comments. Personally, I don't need years of data (although I definitely see the value in that), but a quick example comparing outdoor and indoor temps would spark further interest.

About as hard as flushing the toilet in public restrooms 😞😨

​@@iron4ig you don't need data, just asked the kids using the facility.

Just what I thought. I don't say it doesn't work, I just want to know what they deem comfortable. A wonderful design in any case.

I love Francis Kéré s presentations especially in german they have this positive and enthusiastic energy

Non à l’anglo-suprémacisme ! Faites vos vidéos dans votre langue préférée et que les anglo-suprémacistes aillent se faire mettre !

Why English? Why don't you learn other language as many of us around the world do? Your loss.

Thank you for your comment 🙏🏽 sounds like a great idea and I’ll definitely add it to the list 👍🏽

Thank you for this! I came across Hassan Fathy in Architecture school and I was amazed by his work! I’ll look into it more ☺️

You mean wood-framed? We still build that way because it works. And if you're not using modern materials, products, and concepts to design, build, and finish your homes you're doing it wrong. Modern American homes are extremely energy efficient, weather-tight, highly durable, all but obviate concerns over pests, and are built to deal with the environmental needs of the locations in which they are built. Oh, the horror!