geodesic dome greenhouse - part 9 - polycarbonate! - joining polycarbonate sheets
Below is the latest dome greenhouse series showing the installation of polycarbonate.
It's good to close it up and not work in the wind.
The weather is still cold, but the heating system is the next one on the list!
This is your happy Transcript for reading! ; -)Welcome Back!
This video will show how the exterior of the dome is covered.
The North surface of the dome is free of polycarbonate and is covered by OSB and will eventually be covered.
Bolts need to be added to each triangular part to support the plate.
Placing them can be tricky when it's hard to reach all points.
Sometimes the best layout plan doesn't always work . . . . . . Once all the bolts have been installed, it is time to install the OSB.
I found it easier to set up the sheath by tearing the OSB to 2 feet instead of leaving a 4 feet wide sheath.
It also reduces the amount of waste generated.
The roof and part of the dome are covered with water and ice shields.
This will protect the building in the winter and allow me to build the roof in the warm weather.
The shield has an adhesive backing that helps secure it on the OSB, and some roof nails ensure that a gust of wind does not peel it off.
Polycarbonate is 6 by 24 feet long.
I set up a few OSB offerings on the ground as cutting areas.
I decided to redesign an old tape measure and cut it off so that I could easily measure the various leg lengths of the triangle.
With a few clips to fix the end, it's easy to triangulate all the points.
I found it easier to leave my marks as long as I poke a nail on the material.
Trying to Mark frozen Poly with frozen Sharpie is futile.
It is easy to cut polyester with a sharp round saw.
After I finished filming the film, I found that it would be easier if I put another piece of discarded polycarbonate under it so that the blade would not have to cut the OSB.
Set up a guide to make a good straight cut.
After each piece is cut, the protective film can be removed and the sawdust in the flute can be blown out with compressed air.
The mounting panel is very simple if there is no wind.
I did measure each opening before cutting each panel to make sure the measurement matches the computer calculation.
There are several parts that deviate slightly, which may be due to minor errors in the wheel hub structure or in the pillar measurement.
But, to a large extent, they all went in as planned.
Cut each panel so that the groove is oriented to allow condensation to discharge.
Once I get to the ground, it's easier to install each part.
All panels are fixed in proper position with stainless steel screws with neoprene-backed washer.
The screw goes directly through the polycarbonate and the gasket creates a waterproof seal on it.
All joints will be taped in the spring as waterproof tape needs to be applied when the waterproof tape is over 60 degrees.
20 people were out during the shooting.
You may have noticed that I'm wearing insulated boots.
Jerseys, warm hoodie jerseys, scarves, winter clothes, winter hats under the hoodie and warm gloves!
All the panels intersect well on the hub.
The initial plan was to bite each bolt so that the panel would not interfere with the bolt.
In addition, adding the bevel to the bolt provides a large flat surface for the panel.
The bottom panel is cut extra
So they can hang on their knees.
This will help to stream the water into the water and prevent the water from entering the dome through the knee wall.
The overlapping part is simply cut off with a razor.
The north side of the dome not covered by the shed is also inlaid with OSB.
Unfortunately my HD camera is broken so I can't shoot this part but this is the final structure.
I directed the building when I set it up, so it faces the challenges it deservessouth.
Now it's like a huge day dial and it's easy to tell when it's lunch time!
That's it now.
The heating system is likely to follow.
Working at cold temperatures is getting harder and harder!
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This phenomenon is called "needle ice", which occurs when the soil temperature is higher than freezing point and the air is lower than freezing point.
The water in the soil was pulled out by cold air and quickly frozen, forming these long ice stocks.
It's fun to crush them too!