In order to repair the first reinforced concrete bridge across the river in human history, Chen Xu can be said to have moved out all the knowledge he knew about bridges in later generations, and explained for nearly two hours, and finally felt a little dizzy and dizzy before stopping.

"At present, the first task to do is to survey and design, and then according to the volume of the bridge budget to be used in the steel bar, cement and sand, as well as the construction period and the required manpower and material resources, so this matter is entrusted to Dean Zhang, first take people to find the most suitable location along the river, and make a unified budget for everything needed to build this bridge, the length of the bridge, the length of the approach bridge, the position and height of the bridge piers, and the bamboo and wood rope nets and straw mats that need to be used to build the formwork. Anyway, everything has to be planned first. ”

"By the way, recently arranged for people to first pour concrete to build a wide cement pavement on this section of the road leading to the freight terminal at the south gate of the city, with a thickness of one foot on the line, the length of this road is only two miles, and it can be completed in a few days, pay attention to the problem I mentioned last time, in order to cope with the effect of thermal expansion and cold contraction, every few zhang must reserve pouring gaps, and the roadbed must also be built ...... level."

"Master Hou, why do you have to repair this road before building the bridge, is it to transport the materials for repairing the bridge?" A craftsman couldn't help but ask.

"No, this is to let the emperor and the Manchu ministers see the effect of cement, there is not enough effect to impress them, this bridge can not be built by our Academy of Sciences, the cement consumed, sand and gravel, steel are an astronomical amount, each is at least tens of millions of catties, but also involves cement plants, steel plants and sand and gravel screening and transportation, so this is a super project with many industries cooperating with each other, involving no less than 10,000 people, so this road is repaired first, Let everyone see the miraculous effect of cement into stone, and then I believe that everything will be solved, and the last thing we have to do is the engineering command, of course, the construction of this road can also accumulate the experience of concrete mixing, after all, such a large bridge can not be poured successfully at one time, must be completed in sections and blocks, so to ensure that the proportion of concrete is consistent, so you must strictly implement the engineering quality standards I said, do not cause the bridge to collapse halfway in the future or collapse soon after the end of construction, After spending so much money and property and having such serious consequences, according to the Great Qin Decree, you, including me, will be severely punished, and the overseers and craftsmen will be beheaded, so everything must put the quality of the project first......"

Although Chen Xu made a very serious prediction of the consequences of the collapse of the bridge, this did not scare all the craftsmen and craftsmen of the Academy of Sciences, almost all of them asked to participate in the construction of the Weihe Bridge, even Tang Ting, who studied glass, was very enthusiastic, so Chen Xu did not understand very much, and finally he threw this directly to Zhang Cang, and closely explained to Zhao Qing, and asked him to arrange manpower to cooperate with Zhang Cang to provide all necessary support.

Once the Weihe Bridge is successfully built, Qin Shi Huang will inevitably fully support the large-scale development of the cement and steel industries, only to speed up the promotion of iron agricultural tools faster, so that intensive agriculture can develop faster, make transportation more convenient, and commerce can develop faster, only the simultaneous development of agriculture and commerce is the foundation of the country's prosperity and strength.

Although this bridge is nothing more than an inconspicuous cement bridge over a small river in the eyes of later generations, it is a miracle bridge in the eyes of everyone now.

And in this era when there are no cars, no cranes, no forklifts and excavators, all projects are piled up manually, and every sand and stone is not easy to come by.

What's more, to burn so much cement, if you want to use 100,000 catties of cement, a total of 25 tons, then the sand and stones are used to use two times and six times the appearance of cement, which is in the construction of swimming pools and water towers when the craftsmen under the guidance of Chen Xu repeatedly tried to match out, more saving cement, and after drying, the strength of the concrete is also very high, then the sand and stones are 37 tons and 75 tons respectively.

The rest of the bulk is the thickness of the steel bar, the current steel bar is low carbon steel, tensile performance is also good, although the use of hot drawing, but because there is no large-scale and safe operation of steel juice equipment and methods, so the longest length of the steel bar manufactured is not more than five zhang, so the waste in use is more serious, the bridge is estimated to use at least dozens of tons of steel bar.

Although Chen Xu had roughly calculated in his heart at the beginning of the plan to repair the bridge, but now that the project was officially approved to build the bridge, he suddenly felt a little uneasy, dozens of tons of steel did not seem to be much, but in this era without any mechanical equipment, it was all up to the slaves to mine ore with their hands and hoes, and then carry baskets out of the pit, and then a car of almost 300 kilograms was sent to the ironworks, which also consumed a lot of coal and stone, and a furnace could only smelt more than 200 kilograms. Moreover, pig iron also needs to be smelted twice, carbon removal into low-carbon steel to increase toughness, and then it will be transported to Xianyang by rickshaw for thousands of miles, which I don't know how many people will be tired to death, and how many people will be sick and injured......

the chicken, has Lao Tzu been full lately!

Thinking that it would cost so many materials to build a bridge, and that it would take so much manpower and material resources, Chen Xu felt a little scalp fried, feeling that he was making evil, it was better to soak in the pool at home and eat ice powder and watch a group of wet little maids play leisurely.

Zhang Cang became the chief engineer of the Weihe Bridge Project Headquarters, and began to convene craftsmen and craftsmen from the Academy of Sciences who were proficient in water conservancy and bridge construction to begin preparing the engineering survey team, and also asked Zhao Qing to contact the Ministry of Industry, the Shaofu and the Inner History Office to send officials to deal with the messy things.

After Chen Xu arranged the repair of the bridge, he got into a carriage and staggered to the newspaper office.

A few days ago, the government of history reported that the annex of Chang Yu seven or eight miles west of the city has been completely repaired, and the office space of the history museum and the bookstore, including desks and chairs, is also fully prepared.

In fact, the printing house was completed earlier than the history museum and bookstore, and the location is also on the west side of the annex of Chang Yu.

It was originally the location of the stable, but the area was unusually spacious, Chen Xu went to see it twice, and felt that at least five hundred horses could be raised at the same time, although twenty years have passed, many places have collapsed and dilapidated, but I can still see what kind of magnificent momentum it is, it is like a horse farm in a military camp.

So arrogant, no wonder he died!

Chen Xu looked at the stable that covered an area of dozens of acres and sighed, but after the recent repair of his own courtyard outside the city, he took a look at his own stable, and also felt a little frightened, the emperor rewarded it several times, and his own family already had more than 200 horses, and the stable also had twenty acres, and he also had running water and swimming pools that the emperor's family did not have......

So Chen Xu has become a little cautious recently, afraid of hearing the emperor's call.

But fortunately, the emperor did not come to trouble him, and even the meeting was as gentle as ever, and there was no intention of pulling him out and pulling him in five carriages.

Now that the history writing museum, bookstore, and printing house have been prepared, then a large number of disciples can be summoned to start compiling history books, poetry books, and classics of the sages.

When he came to the newspaper office, Chen Ping, Fu An and a group of senior leaders of the newspaper welcomed Chen Xu to the office and sat down, and after serving fragrant tea, Chen Ping asked: "Master Hou, you haven't been here for a few days, is there something to order today?" ”

"Well, did you write the recruitment list that you prepared last time?" Chen Xu nodded.

"It's the one in the History Museum and the bookstore, it's already written, I'll show it to you!" Chen Ping took out two sheets of hemp paper from the drawer and handed them to Chen Xu.

"Yes, that's what it looks like!" Chen Xu took a closer look at it and returned it to Chen Ping, "Publish this recruitment list article in the latest issue of the newspaper as soon as possible, the history museum and the bookstore have been completed, and now there are only people missing." ”

"Master Hou, after these two bureaus are summoned, I am afraid that there are thousands of people, and the amount of money and food consumed every year is not a small amount, if you can't make money like a newspaper, I'm afraid the Inner History Mansion can't afford to support ......" Chen Ping said very worriedly.

"The history museum originally did the initiative of inheriting the future generations, with the credit of the original source, the imperial court provided, but some of the books compiled in the bookstore are the classics of the hundred schools of thought, belonging to the inheritance of the disciples of the hundred schools, naturally compiled and proofread by themselves, but if you want to print it out and spread it to the world, then you need to pay for it!"

"Master Hou is saying that the books compiled by the bookstore must be printed at the compiler's own expense?" Everyone looked at Chen Xu a little confused.

"Yes!" Chen Xu nodded slightly, "For example, you are a Confucian Mencius lineage, you compiled and sorted out the doctrine of Mencius, and the bookstore is responsible for reviewing and approving it and collecting it into the warehouse, but how to spread it to the world so that others can see it has to find a way by yourself, you can engrave it on bamboo slips, or you can copy it on hemp pulp paper, but this method must be very slow, if you spend some money to hand it over to the printing house, you can print and bind hundreds of thousands or even tens of thousands of copies for him in ten days and half a month, do you think he is willing?" ”

"Willing is willing, but I'm afraid it will make many people dissatisfied, those who have money can print, what if they don't have money?" Chen Ping asked cautiously.

"Heaven is natural, survival of the fittest, existence is reasonable, how many things have happened since ancient times, and how many sage books have been written since there are written records, but many of them have long been lost in the long river of time and cannot be found, what I am doing now is to sort out and compile these books that are dying out one after another, and keep them, as for how much this book is recognized and accepted by the public, it needs to be spread by the hundreds of schools of thought and lovers themselves......"

"Only those books that can best represent the broad public opinion will be disseminated more widely, and for those books that are obscure in language and obscure, naturally few people will dabble in the study, and many truths are summarized in the debate, these books that are widely circulated and highly recognized, will become more colorful in a large number of reading and debate, there are many books, a hundred kinds of books are also printed in a hundred sets, some may not be enough to sell at all, some may only sell more than ten sets, and some even one set can not be sold, This is the problem of the recognition of the content of the book, and we can't force the book to be read by others......"

"After all the books come out, you can only choose according to your preferences, for farming, animal husbandry, breeding, medicine, treatment and other books related to people's livelihood, the bookstore will print and sell or even distribute them for free as needed, but for the books of our sect, the bookstore only undertakes the part of compiling and revising and reviewing, if you want to print and sell in large quantities or distribute them for free, you can only buy the book number with the money of the hundreds of disciples themselves, and the printing house will give the printing ......."

"Books and inheritance, do not adapt to the needs and trends of the development of this era, naturally will only be abandoned, but no matter what the book, we try to keep it, maybe in the next hundreds of years, thousands of years, these books or theories that are not accepted and recognized now may become very useful, this is the biggest intention of my bookstore, the inheritance of the sages is indispensable, in line with the principle of not discarding and not giving up, whether it is good or bad, all the books are sorted out and preserved, as for right or wrong or useless, Time will tell in 100 years and 1,000 years......"