Showing posts with label passive solar. Show all posts
Showing posts with label passive solar. Show all posts

Monday, July 9, 2012

Building to the weather, Bennington, VT, #2

This picture was taken on July 5th.
The date is important. Here you see how the roof extends, creating eaves that shade the windows of this house from the hot July sun.
In the summer, the sun here in New England is high in the sky. A 16" eave will shade about 5' of the wall below it. Here you can see that the roof over the first floor extend the farthest, casting a longer shadow than the main roof whose shadow covers little more than half the second floor windows. The roof over the sun porch on the right side is also shallow.
Later in the summer, the sun will be lower in the sky. The eaves will not cast as deep a shadow. But the tree will. Its shade will include the front of the house.
In the winter months, when the sun is at a much lower angle, the eaves will not block the welcome sunshine and heat. I will take another picture then and add it to this post.

The porch was probably all screens when it was built - set on the northeast side of the house, held back from the front corner to allow it to be shaded by the house from the sun in the afternoon. These porches have often been glassed in by later owners as they are beautifully sited to be delightful places on sunny late fall and then late winter mornings.

a note on the style: The house is Colonial Revival with a nod toward Cotswold cottages with the deep roof overhangs reminiscent of thatch, the small windows over the entrance, and especially the clipped roof on the gable end, sometimes referred to as a 'jerkin head' after a monk's cowl.

Wednesday, June 20, 2012

Building to the weather - Bennington, VT, #1

in this case, PLANTING to the weather
a post for the summer solstice

Here are 2 pictures of the same house. The first was taken in April, the second in June.
Note the absence of shade in April, its presence in June.
The house was build around 1765 in southern Vermont. The trees were planted around the same time.




In the spring, when the warmth of the sun shining through the windows into the house is so welcome, the trees are just beginning to bud. By June, the trees have leafed out shielding the house from the hot sun. They will protect the house though October. Late fall and through winter, the sun will once again be able to warm the house.
Not only do the trees keep the sun off the house, they create a micro-climate. In their shade the air temperature will be about 10* cooler than out in the sun. This temperature change also creates a breeze, always welcome on a hot day.

In lower latitudes, the path of the sun across the sky is different. The east and west elevations are the ones which need trees for shade, while a roof overhang is enough to shade the south facade.

Each climate has its own ways to shelter from the sun. For me one of the pleasures of traveling is watching how a particular part of the world builds, and plants, to its particular climate.

When I wrote- on this blog - about the Park-McCullough House Carriage Barn, I hoped to explain to a modern audience this basic knowledge about climate that our ancestors took for granted. I thought using a building everyone could visit (as it was open to the public) would make the ideas more accessible: you could go look for yourself. I found instead that readers thought only rich people who hired architects built to the weather. 

This time my illustrations are ordinary, vernacular buildings.

Wednesday, June 25, 2008

Building to the weather - what is Original Green?

"Original Green, passive solar, building to the weather."

These are all ways to describe the same thing - how people all over the world have traditionally built to work with their specific climate.

People who look at architecture often see buildings as aesthetic symbols, or evidence of a society's aspirations. Sometimes they see buildings in terms of structure and technology. Often they focus on monuments, places intended for ceremony. Europe's Gothic cathedrals are excellent examples of all those ideas. But buildings are foremost shelter, a place to be inside - protected from the weather, whatever it may be - spaces for living. Even cathedrals had spaces where people lived - cloisters - and often served as informal gathering places.

But our ancestors spent much of their lives outside. They lived without electricity, central heat or air conditioning, so they had to understand their surroundings. They learned how to adapt their buildings to their weather, making their daily lives more comfortable by how they fashioned those buildings. And they did this with no modern technology. Instead, they understood the basic forces: sun, rain, wind - the macro-climate - and their building sites, where topography and geography create specific micro-climates. Their solutions are wonderful, inventive, brilliant. So what I'm saying, is, " Hey, pay attention! This is great stuff! It's all around us, in its marvelous variety. Maybe you are lucky enough to already live in it!"

Read my  7 part series about 'building to the weather' at the Park-McCullough Barn and House


Part 1 - http://www.jgrarchitect.com/2008/04/building-to-weather.html

Part 2 - How does the carriage house work with the sun to minimize wind chill?
              http://www.jgrarchitect.com/2008/04/building-to-weather-2.html

Part 3 - Why bother with a cupola?
             http://www.jgrarchitect.com/2008/05/thats-pretty-amazing-cupola-with-all.html

Part 4 - Eaves? they're important?
             http://www.jgrarchitect.com/2008/05/eaves-for-work-and-play.html

Part 5 - How a floor plan makes a difference:
             http://www.jgrarchitect.com/2008/06/no-tech-warmth-with-low-tech-aid.html

Part 6 -  A look at how these concepts were used at the Big House:
             http://www.jgrarchitect.com/2008/09/big-house-is-green-too.html

Part 7 - Shutters:          
             http://www.jgrarchitect.com/2008/03/shutters-ok-i-know-that-they-were-for.ht