For the construction of this 'impregnable' fortress, in fact, it is not entirely possible to rely on the cement that is being made now. After all, the quality of this kind of soil firing, the formula is not scientific enough, and the quality is really average. So I only dared the craftsmen to build a six-story building. more

Now let me use this thing to build a fortress? I guess if it is really built, it is estimated that it will not even be able to reach the sturdiness of the wall of the original level of Yanmen Pass.

And I remember that the design life of various standard concrete buildings in later generations seems to be about 100 years. So I think this inferior cement is definitely worse. It should not be able to reach the solidity and longevity of the big bluestone or blue brick city wall in this era! But that's not the main advantage of concrete construction. Rather, it is easy to operate and fast to build.

So after I reported these situations to the imperial court, I finally dismissed the idea of building a fortress on the imperial court, and thought of using cement to repair many ancient Great Walls...... When I learned about this follow-up plan, I began to be glad that I still knew a little bit about cement. Otherwise, if I really did this, wouldn't those ancient Great Walls be destroyed in my hands?

It's just that I don't know which court bigwig actually came up with a bold idea in the court. Later, it was conveyed to me after it was consistently approved by the imperial court. They even asked me to build a small town out of cement...... Anyway, when I heard the news, my whole body was clouded!

What the hell is this? Build a city made of concrete? That's what I can do!

But then I learned why the court agreed to this. It turned out to be the result of my paper on the advantages and disadvantages of cement. At a court meeting, after studying my document, a group of bigwigs recognized the "divine object" of cement, especially after seeing the fact that "the advantage of cement is fast construction" written in my document, they thought that as long as there was enough cement, then they could quickly build a small and medium-sized town. If it is really done, then the number of towns in Datang can be multiplied several times! This is a thing that benefits the country and the people.

Anyway, the person who came up with this idea is really a genius! If I really pour the power of Datang into building a concrete city, then I am still confident that I can build a small city similar to the one in the 80s in the later generations. Including concrete roads and various construction ......

So when I realized that I couldn't say no, I began to wonder if I should just build a completely modern city. Anyway, this construction was supported by the entire imperial court.

"So~ hehe! That's it! Think of it as an attempt to give me a return to modern life! ”

After all, if I think about it, I find that with the support of the human and material resources of the imperial court, as well as the technical support of my academy, as well as the full support of the craftsmen of Lubanmen and those craftsmen I have gathered. Maybe I can make this new city's technological level directly surpass this era by more than a thousand years!

After all, I have experience in building commercial streets. In addition, the research of steam engines, generators and circuits has reached a very high level. Even the people of the academy began to send people to the Nanyang area to look for rubber trees according to my prompting. After all, the study of electrical circuits cannot always rely on the wires I take out of the mall. You have to make real insulated wires.

All I know about the material of the wire skin is plastic and rubber. The only way I know how plastic is made is from petroleum. But with the current level of science and technology, this is simply not possible. After all, I don't know how it works, and I don't have any knowledge about it in the books in the mall!

So I can only rely on rubber~ But in my memory, which can be described as 'miserable', there is no knowledge of rubber trees at all. I know that rubber trees can produce rubber, or did I learn it through some games before I traveled back in the future!

Unfortunately, I only know that rubber trees come from the tropics. It is not clear where the tree originated. I don't know that in this era, outside the place of origin, there is no such thing in the Nanyang area I sent people to! In later generations, although there were many rubber trees in the South Seas. However, it was only transplanted from its place of origin by the British in the late 19th century that it became the largest producer of rubber trees in Southeast Asia.

So I sent people to search the Nanyang area for several years, but they didn't find anything......

But it doesn't matter, anyway, with the support of the imperial court, then I can exchange the gold for enough wires from the mall. In that case~ in this kind of new city, I can directly build a large power plant. And then wire the whole city...... Hehe, when I think about it, I really yearn for this city.

It was for these reasons that I fully agreed with the arrangement of the imperial court, and then began to design a new city with all my might. The imperial court also began to contribute to the construction of a large number of cement factories and prepared a large amount of steel. With the strength of the entire imperial court to prepare the building materials for a small city, it is still more than enough.

In addition, the practical research on steam engines in the Ministry of Engineering and the academy, as well as the emergence of forging and forging machines that use steam engines as power. For the construction of "reinforced concrete" cities, "steel bars" and building materials such as iron pipes, they can already reach the level of later generations!

Of course, this is also thanks to the fact that after the Ministry of Industry got a large number of first batch of researchers from the college, it has also made great progress in the science and technology tree of metal smelting! Even the method of 'small blast furnace steelmaking' has been developed.

At that time, I almost thought that I had met another master who crossed over. However, it was later learned that this smelting method actually appeared very early, but it was hidden in a certain sect and kept secret. Among the ten schools that came to the academy this time, there are schools that are good at metal smelting. So after learning a lot from them, these researchers really made a very high-yield steelmaking method by using the action of motor-powered 'blowers'......

It is precisely for these reasons that steel pipes and water pipes, which are needed to build cities, are easily manufactured......

The cement and steel bars used for construction are already in place, and the gravel and sand for road construction are almost the same~ Unfortunately, I don't know how the 'asphalt' thing came from. So the only way to build a concrete pavement is to use cement.

In addition, when I was designing the city drawings, I also began to arrange for people to make other building materials by hand. This includes all kinds of 'precast cement panels' and utility poles.

However, I have always found it difficult to design an 'urban sewer' system, but after asking craftsmen, I learned that this kind of sewer has been spread throughout the city as early as the Qin Dynasty. And it is made of pottery underground pipes, plus aqueducts and ditches...... So I don't have to worry about this matter at all, just leave it to a special craftsman to design.

Since I don't need to bother with this, I'll just move on to the design of other places.

"Hmm~ water and electricity supply plus drainage system~ I don't need anything else!" I looked at the newly drawn drawings and muttered.

In the design drawings that I have worked hard to draw, the city is basically designed in the way that Chang'an City is symmetrical in horizontal and vertical directions. It's just that each square is designed as a walled living area. And it's all four-story units.

Although I have arranged for craftsmen to make a six-story building out of cement. But I'm still not sure about the quality of this cement. So I was a little more conservative and designed all the buildings to be four-story buildings. It's still the kind of unit that later generations. After all, I've been living in this kind of place since before I crossed over. So it's quite handy to draw the design. Although I am a layman in design, this kind of reinforced concrete and blue brick building 'brick concrete' building actually has a relatively high safety factor. In addition, many houses in this era were 'brick and wood'! So for those construction workers, it's just a slight change in technology. This kind of construction difficulty is also reduced a lot.

Especially with the support of a large number of craftsmen in Lubanmen, these buildings are simply a simple thing for them.

The only complicated part is the layout of the electrical circuits and water pipes in the various buildings. When I came out with the craftsmen trying to build a small four-story building that I had designed. Although it only took a week to build a four-story apartment building, the installation of the mains became a challenge.

The building is easy to build. The wires installed in it were not difficult for the craftsman for long. Anyway, the only electrical appliances that can be used now are electric lights, so you only need to simply pull a wire in each room.

But the problem with the water pipes stumped us. After we installed the water pipes, we found out that although the imperial court had really made the water pipes according to my requirements. However, because of the fineness, these pipes were not made in the 'seamless pipe' way of later generations, but were simply cast. So both sealing and waterproofing became a problem. And there is one of the biggest troubles, that is, these iron pipes forged in different periods are not accurate enough to get the size and thickness. The two water pipes plus the water pipe joints used for connection turned out to be three different sizes that could not be connected at all. Even if you barely pick a similar connection, water leaks have become the norm......

As a last resort, I had to use the rubber water pipe in the mall as a direct connection between the two iron pipes, and after fixing it with iron wire, I could barely get the pipe out of the pipe, and the problem of water leakage was temporarily solved. But in this case, durability becomes a serious problem. The rubber water pipes between the iron pipes can be easily damaged.

So after I was upset for a long time, I had to take an alternative solution: the water pipe in the building did not go directly to the homes of the residents, but a public faucet was installed downstairs to make do with it......

I agreed that because running water could not enter every room, even the bathroom I designed in the room became a big problem. If you don't have running water to flush, then the toilet won't work at all!

Oh yes! Speaking of toilets~ I found that the ancient people's research and production level of porcelain was really high! I just took out a toilet bowl and gave it to the craftsman of the 'kiln', and they easily copied it perfectly.

The problem with the sewer is also the use of ceramic pipes, so that a bathroom similar to that of later generations can be installed in the home of each building!

The only regret is that the sewer problem was solved, but the water supply and tap water problems could not be solved. Unless it's all using the pipes I provide from the mall.

But the shopping mall I am thinking of is a comprehensive shopping mall after all, not a professional hardware store. So there are water pipes inside, but the number is limited! I kept moving out for several days, and it only took me a week to put together the water pipes for a unit building.

The problem of wires is quite simple. There are a lot of these things in the mall! And this thing is sold in rolls, each roll has a length of 100 meters. Dozens of rolls of wires on the counters of shopping malls are enough for an entire residential area. After all, there is only one wire connector left in each room. Electrical appliances that can use electricity, in addition to electric motors, other electrical appliances, including light bulbs and lamps, are all supplied by shopping malls! At the current level of science and technology, not to mention electric lights, even glass has not been successfully studied!

Speaking of glass, this is also one of the biggest difficulties when building a city. Because 'glass' is very valuable, I didn't send anyone to study the making of glass at all. I'm now making about the same profit as my restaurant by selling glass bottles. So I didn't bother to study the glass.

The amount of glass in the mall is quite large. There are also many ready-made windows that can be removed directly from the mall and used as building materials. However, it is also because of the glass ~ ah no, it is the reason why the value of 'glass' is too high. If I really install glass in every room~ Ah no, it's a glass window, it is estimated that it will not be long before it will be ransacked! It's worth more than gold.

It is for this reason that I blame myself for my greed. In addition to arranging for people to start really studying the production method of glass, it is to design the windows of all buildings for the time being as the common lattice windows of this era...... It's still the kind of paper paste that is made of 'window paper'.

Anyway, after a try, I found out that although it is possible to build the main house. But the kind of house I was hoping for with a running water and electricity is not quite possible right now...... Unless it's a special building with the building materials of the mall. I can barely do that!