A greenhouse is being planned.
Since I do not want to work with acrylic glass, I need a foundation that will prevent the glass from shattering.
Because the garden is on a slope, it’s difficult to bring even small excavators in.
Therefore, I am considering using an earth auger to drill holes (12 to 15 centimeters in circumference, 80 centimeters (31.5 inches) deep), filling them with reinforcement and concrete, and then setting the individual posts on top. The diameter of the basically round structure is planned to be 3 meters (10 feet).
I imagine that about 8 posts will be placed “around the circle,” and the slope at the top will be cut back and built up at the bottom, secured with stone walls (without deep foundations).
Presumably, such slender columns—if deep enough—can be drilled relatively easily and will not require much concrete.
I have two questions for the group:
1. Does anyone know of such earth augers and has already used one? I would prefer an electric auger because I find motors too loud and unreliable. They are often praised online: “this works great,” but of course, anyone can write that … 🙄
2. What do you think about this: a row of posts supporting a welded steel structure. Will that hold up? Or will the posts shift enough over the years to cause creaking or instability?
Of course, it depends on the soil. I have known the site for four years now, and it seems quite stable to me.
In terms of weight, I estimate that although it will be “something” (steel and glass), it won’t be a “heavyweight.”
Since I do not want to work with acrylic glass, I need a foundation that will prevent the glass from shattering.
Because the garden is on a slope, it’s difficult to bring even small excavators in.
Therefore, I am considering using an earth auger to drill holes (12 to 15 centimeters in circumference, 80 centimeters (31.5 inches) deep), filling them with reinforcement and concrete, and then setting the individual posts on top. The diameter of the basically round structure is planned to be 3 meters (10 feet).
I imagine that about 8 posts will be placed “around the circle,” and the slope at the top will be cut back and built up at the bottom, secured with stone walls (without deep foundations).
Presumably, such slender columns—if deep enough—can be drilled relatively easily and will not require much concrete.
I have two questions for the group:
1. Does anyone know of such earth augers and has already used one? I would prefer an electric auger because I find motors too loud and unreliable. They are often praised online: “this works great,” but of course, anyone can write that … 🙄
2. What do you think about this: a row of posts supporting a welded steel structure. Will that hold up? Or will the posts shift enough over the years to cause creaking or instability?
Of course, it depends on the soil. I have known the site for four years now, and it seems quite stable to me.
In terms of weight, I estimate that although it will be “something” (steel and glass), it won’t be a “heavyweight.”
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