OK. Here is my attempt at building my very own greenhouse. It isn't completed yet but will be well before winter. I will post updates as I get further along.
Here's the start. My brother-in-law had some left over pipe so he offered to weld the greenhouse frame from pipe. I was going to make it out of wood because I'm a terrible fabricator. Hey, free pipe, free labor, I said go for it!
My dad on the left and brother-in-law on the right measuring for the center pole. Let me just say this too about my b.i.l., he is freakish when it comes to fabricating. Everything is leveled, square and perfect. Probably why I'm no good at it, I typically just slap stuff together.
Here is a picture after the center post has been welded in and the sides are done. The roof trusses were also welded in from pipe. See below.
This is the finished frame, setting in place in my garden. In the background you can see my beans and sunflowers.
This is a picture of the beds being built in the greenhouse. I added dirt and compost to fill the beds which are made from 2x6's and 2x10's to make the beds about 22" high. I also dug out in the center and added 2B stone later so I wouldn't be walking in mud since I'm going to remove the plastic every summer.
OK, here it is after the front has been installed and this is where I ran into a pretty big snag. The side you are looking at is the South facing side so, after I added the plywood almost the entire inside was shaded. I thought about what to do and came up with the idea to just install the wood front and back and cut plexiglass windows in later. This is as far as I've gotton so far but will keep adding posts as I progress. You can see my cold frame in the background which is working great! I'll add a post about that later too.