In the program about Berzeliusgården (2019), a really long gate was built in wood. I have an equally large opening to my carport and garden. I don't understand how such a gate can be made so that it doesn't become heavy and cumbersome 
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It's probably just a matter of having good hinges and it becoming stiff, right? It will be unwieldy to some extent, but a (half) door to a hayloft probably weighs significantly more, I suppose.
Best answer
I have made and repaired/corrected a number of larger gates and doors. Had to check the program to see how it looked.
I agree with the above that it is sparse, so the weight isn't terribly high. However, I am actually a bit skeptical that it will stay that perfect over time. I usually advocate reinforcing with a wire that is set from the outer lower corner to the inner upper hinge, with a turnbuckle, so adjustments can be made over time. The wire can usually be concealed with a brace, but not in this case because a V was used instead, which I can understand because I also think it looks better on a gate of that proportion.
As long as the gate is "as it should be" and doesn't sag, and the post is 100% firm and doesn't bend/twist and you have good/right hinges, there are absolutely no problems maneuvering a very large/heavy gate without much effort at all.
We have workshop gates at work that weigh several hundred kg and need to use a forklift to lift them on/off. They are extremely rigid, welded from 80mm square tubes, and mounted on hinges that are supported both radially and axially. There are no problems moving/opening/closing these with just a finger, okay, it doesn’t go fast in this case, as there is a lot of mass to accelerate and stop, if you want to open/close quickly you need to apply more force, and it's not something you can just slam shut like a garden gate. But the point was that there really is no problem having either a large or heavy gate if it is just properly designed. The wind resistance is probably what you need to be most aware of as it starts to get larger.
I agree with the above that it is sparse, so the weight isn't terribly high. However, I am actually a bit skeptical that it will stay that perfect over time. I usually advocate reinforcing with a wire that is set from the outer lower corner to the inner upper hinge, with a turnbuckle, so adjustments can be made over time. The wire can usually be concealed with a brace, but not in this case because a V was used instead, which I can understand because I also think it looks better on a gate of that proportion.
As long as the gate is "as it should be" and doesn't sag, and the post is 100% firm and doesn't bend/twist and you have good/right hinges, there are absolutely no problems maneuvering a very large/heavy gate without much effort at all.
We have workshop gates at work that weigh several hundred kg and need to use a forklift to lift them on/off. They are extremely rigid, welded from 80mm square tubes, and mounted on hinges that are supported both radially and axially. There are no problems moving/opening/closing these with just a finger, okay, it doesn’t go fast in this case, as there is a lot of mass to accelerate and stop, if you want to open/close quickly you need to apply more force, and it's not something you can just slam shut like a garden gate. But the point was that there really is no problem having either a large or heavy gate if it is just properly designed. The wind resistance is probably what you need to be most aware of as it starts to get larger.
The gate in the program is made like the one that existed there before and that they saw in a photo.
Forged long hinges and the longitudinal boards mortised into the horizontal ones.
I believe it will last and function for a long time, without adjustments.
Forged long hinges and the longitudinal boards mortised into the horizontal ones.
I believe it will last and function for a long time, without adjustments.
Yes, it will last a long time and probably work for a long time. But I think it will warp a bit, after all, it is "just wood." However, that doesn't matter in this case. There is nothing to fix your eyes on directly that would make you notice if it no longer, for example, aligns with a fence or similar. And the lock/hasp arrangement is forgiving/unaffected if it sags a bit. It's worse when there are sliding bolts or other highly height-dependent locks. The last thing you want is a gate you have to lift up every time you want to close it.