Squaring the high tunnel 4 x 5 = 20 3 x 5 = 15 5 x 5 = 25 4 3 5 Pythagorean theorem
Square up the corners, or make sure the 2 distances between corners is the same, and the frame will be square! Tip – When working with a second person, always have the same person looking at the tape measure when taking the measurement!
Simple window framing using 2 x 2’s, a couple of hinges, a few screws to hold the string in order to open and close the window and a hook n’ eye to hold it closed! After years of use, we find that the windows warp and want to come apart, so we now reinforce the corners with either a steel “L” or a plywood gusset.
Notice the window in the top of the frame, and the main windows are open only halfway for venting on a cold day.
Here the windows have been opened all the way as the day has begun to warm up.
Manufacturer Dimensions Cost (US $/ft 2 ) Atlas Greenhouses 30 ft. x 96 ft. Conley Greenhouse Mfg 24 ft. x 96 ft. FarmTek 26 ft. x 96 ft. Harnois Greenhouses 20 ft. x 96 ft. Haygrove Tunnels 24 ft. x 200 ft. Stuppy Greenhouse 20 ft. x 96 ft. Zimmerman Welding 30 ft. x 96 ft. Average 25 ft. x 96 ft. (2400 ft 2 ) ($1.50-$3.00)/ft 2
Are the bolts rusted, are the bows bent or missing, what shape are wooden parts and ground anchors in? What kind of poly attachment system, if any, is there? Usually the poly covering is not reusable.
Can I find replacement parts if needed?
Am I required to take everything away ?
Are the ground anchor stakes in concrete?
How much time and what equipment will be required?
Is electricity available at site – power tools make job easier
Trips to haul everything back home
Okay, so you decide to buy it First, take detailed pictures before de-constructing Number all parts – attachment of bows may be different, bow to bow For example, label first bow, if three piece, B1L, B1C, B1R As you disassemble, think about safety Put all small pieces – bolts, etc, in labeled boxes or buckets to keep them together and easy to find when re-erecting. Make note of fasteners that will not be reusable so you can purchase BEFORE you are on that ladder needing it. Try to load as you go – not handling more times than necessary When unloading, try to keep pieces together in some order that makes it easy to find Try to re-erect as soon as possible – forgetting comes easy!
Maintenance & Up Keep So we think check your poly for splits and for how fragile it feels, but you may not have to replace it at 4 years.
Keep poly patch on hand to repair tears and punctures
Keep a few extra C-clips on hand for your roll-up sides
Keep an extra inflation blower fan on hand if you’re using double poly
Remember to check door and window hinges at least once a year – are they still firmly anchored and do they move freely
Also check doors and windows to make sure they close
Make time to walk around your high tunnel in the fall and make any necessary repairs so that they go into the winter in the best condition possible. We suggest doing this in early to mid October so you avoid doing it during an unexpected snowstorm in early December.