You see the roof pitch on that greenhouse?? And how it matches the roof pitch of the home??? That. Right. There…is a product of GOOD math!!!
Not only do those angles just look good…but the angle of our greenhouse’s roof also creates a nearly perfectly perpendicular angle to the sun in the winter months. Why is that important, you may ask? Well, just so happens I am reading a book…that has greenhouse math in it!
The book is titled The Year-Round Solar Greenhouse. How to Design and Build a Net-Zero Energy Greenhouse, and is written by Lindsey Schiller and Marc Plinke. As the process of learning new things tends to go~ the book is both enlightening and full of ‘hard truths.’ Enlightening? I mean, just look at those roof pitches and maximum light transmission even in winter months…
Hard truths? William and I have so, so, so….so…much work to do. And there are sooooo many other things left to learn. Don’t you hate that? You learn one thing, and then it leaves you wanting to learn, like, five more things, which spurs you on to want to learn twenty-five more things…
…It’s like “you give a mouse a cookie,” except it’s not a cookie…it is a book. Which, in our world, goes from a Passive House…to a Passive House geared towards future prefabrication…to a Passive and Living Building Challenge House geared towards future prefabrication…to a Passive and Living Building Challenge House with an attached greenhouse almost half the size of the actual house with a main hobbit door all geared towards future prefabrication. Phew.
Tired of technicalities and just want a glimpse of what this mudroom/greenhouse/leach field thing might look like??? Totally me too.
Unfortunately, what it looks like does depend on the results of the technicalities…so I am going to try to keep it brief and just outline the technicalities we kept in mind as we drew these preliminary sketches:
~ We don’t want this mudroom/greenhouse/leach field to be ridiculously large. It is to serve as a small addition positioned at our front entrance. For future prefab endeavors, it will have to arrive on its own trailer. But we don’t want it to take up the whole gosh darn trailer… We were thinking no wider than 12’ (that’s about the max width for a trailer bed), and no longer than 20’.
~ While maintaining a reasonable size, it must be ADA accessible. A wheelchair user must be able to easily access, and tend to, all of the plants in their individual beds/ leach fields. For that purpose you will notice that we are thinking of using the ADA T-Shape requirement instead of the 5’ diameter turning radius.
~ The addition will be a part of our home’s envelope, and must meet Passive House standards. We will have thick walls with the addition, just like with the rest of the house. This of course decreases our interior square footage, but having a well-insulated and air tight passive solar greenhouse that harbors an advanced and dedicated ventilation system is key to growing plants with little extra energy.
WARNING. This blog contains a lot of math in it. What’s worse is it is bad math. Unchecked math. Math that is most probably all wrong. Math done by me, Shelby.
So, if you are math-savvy and have the potential to be utterly offended by the numbers I am just chucking out there…then I need your help. Well, more importantly, if you are a math master who can also speak to plants and convince them to drink as much greywater as possible…then I really need your help.
I am also reaching out to our local 4H/Penn State Agricultural extension and plant-knowledgeable friends. Therefore the pressure is not all on you. But any extra help is always appreciated. Especially if you really can speak to plants…
And! Without further ado…Welcome. To Bad Math.