Massive passive house as bungalow

All-rounder, I should probably get a bit smarter on the topic of clay, on the topic of sand you.

Here’s a title from the ......, so not the colorful magazine: "A global competition has erupted over valuable raw materials like oil and gas. But largely unnoticed by the public, the industry is also struggling over sand. The resource is becoming a coveted smuggled good, mafia structures surround its extraction. A filmmaker shows the serious consequences of overexploitation."

It may regrow, but apparently not as fast as it is needed.

What bothers me most about cement, clay, steel is the high energy consumption during production.

Regards, Friedrich.

@Friedrich I have been waiting for that "argument." But you can use the same reasoning for wood. There is also a "wood mafia," not only for tropical woods. Clay, sand, and wood are all renewable resources; you just have to let them regrow. Overexploitation occurs more or less evenly among all these resources, which is why wood does not differ from other renewable resources in this respect. Or did you want to claim with your contribution that there is no overexploitation and no "mafia" when it comes to wood? I won't even get into an energy discussion; many others have already worn themselves out on that.

Yes, I was also waiting for your reply. I actually wanted to say goodbye for good, but now I have to write again. But there is a difference. It depends on the climatic conditions, how you get the wood, how you can "better" use areas, which trees grow there, and what the wood is used for. I don’t worry about our forest, even though we would build a lot more with wood. I worry more about the non-European forests. Especially because the nonsensical tropical timber discussion has taken away their value and thereby opened the door wide to other uses (e.g. oil plants, paper, gasification, and of course also burning). Yes, and I think that is the difference compared to sand; sand should basically be the same everywhere in the world, so it’s only a matter of time until we get Asian conditions here as well. It only takes seconds for the wood for a house in Germany to regrow, is that also the case with other potentially renewable raw materials? What annoys me is that the use of wood is repeatedly questioned under the term "sustainability of the raw material," while with other building materials it is treated as if that were no problem at all. Regards, Friedrich.

yes, I was also waiting for your answer.

I actually wanted to say goodbye for good, but now I have to write again.

Why not? Even if it perhaps already strays a bit from the topic, it is not "offtopic" and if necessary, the original poster can ignore it.

However, there is a difference. It is related to the climatic conditions, how you get the wood, how you can use areas "better," which trees grow there, what the wood is used for. I do not worry about our forest, even if we would build with wood much more.

You are very optimistic. In our eastern neighboring countries, to my knowledge, large forest areas have not been sustainably logged at all, to make "quick money" with exports to Germany, whether as construction timber or firewood. Europe is not the same as Europe (as we get to read daily in the news) – not even when it comes to wood.

I worry more about forests outside Europe. Especially because the senseless tropical wood discussion has devalued them and thereby opened the floodgates for alternative uses (e.g., oil plants, paper, gasification and of course burning).

The profit margins are higher there, just as corruption and crime are. So the forest there is also more at risk.

Yes, and this is where I see the difference to sand; sand should essentially be the same everywhere in the world.

That is a misconception. There are sands that only occur in one place in the world (e.g., carbonate sand on the Caribbean islands). Other sands are also rare. Whether wars are fought over this, I do not know. But with the so-called "rare earths" like scandium, lanthanum or promethium, I think this could certainly become possible in the future. The main share is quartz sand, which is also the most widespread.

and so it is only a matter of time before we get Asian conditions here too. It only takes seconds for the wood for a house in Germany to regrow; is that also the case for the other possibly renewable resources? What annoys me is that the use of wood is repeatedly questioned under the term "sustainability of the resource" and other building materials are treated as if this were no problem. Regards, Friedrich.

Is it better to present the problem reversed now? In my opinion, certainly not.

Hello,

So if you are already talking about raw materials, then as mentioned above, I would build the house with cement and not with wood. Wood is a very important raw material that is running out.

Regards

Hello,

So if you are already talking about raw materials, then as mentioned above, I would build the house with cement and not with wood. Wood is a very important raw material that is running out.

Regards

Cement is a pure binder; you cannot build houses from it, but you can from mortar and concrete.

@Friedrich: now it’s your turn with the perpetually renewable Central European trees. I already have tears in my eyes, best regards from BB