Chapter 140: Primitive Infrastructure Heavy Equipment (Please vote and subscribe)

It is not the first time that the Han tribe has dug a river and made bricks. There is already a group of skilled tribesmen. Let these old people lead the newcomers, and the proficiency will come up quickly. The more troublesome thing is that there are a lot of brick embryo models this time.

Luo Chong personally designed a new wooden brick mold and asked the carpentry team to mass produce it. He didn't care about the rest. He

had appointed the head of the carpentry team and the head of the metallurgy team before. This time Luo Chong appointed the lame man as the head of the kiln worker team, which is also the team with the largest number of people at present. The workload is also very large. Not only bricks, but also charcoal and pottery. There will be many other things to burn in the future. Now they are all handed over to the lame man, the elder of the Han tribe, to manage.

The digging of the river and brick making are on the right track. Luo Chong began to develop new things, a kind of thing specially used for rolling roads and leveling land.

What is used to roll roads? In his previous life, Luo Chong had seen the kind of road roller with two large rollers in front and behind. People can sit directly on it and drive it. It is very efficient and very convenient, so he now wants to make a roller.

The most common material for making millstones is stone, but the Han tribe has no steel now, and it is not realistic to use bronze to cut stones. Bronze with less tin content is too soft and bends when hit, and with more tin content, it is too brittle and easy to break, so Luo Chong directly abandoned the plan of grinding stone millstones.

Later, Luo Chong remembered the method used by the Egyptians to build pyramids with granite. They sawed giant granite into bricks to build pyramids. The method used was to sprinkle a layer of quartz sand on the granite, and then use a flat copper bar as a saw to rub it.

The principle used is that the hardness of sand is higher than that of granite, and then people pull the copper bar back and forth to drive the sand and granite to rub, and use this method to saw the hard granite. However, it

is better to forget about using this method to make stone millstones. The second method was rejected by Luo Chong again. It is easier to directly saw a log as a millstone, but the wood is too light and not suitable for millstones.

After thinking hard for a long time, Luo Chong finally came up with a milling machine that was unprecedented and unparalleled. He used clay to burn a pottery mill. This was the idea he came up with after seeing a water tank. If you lay the water tank down, it would be a milling machine.

Of course, a fired pottery mill cannot be solid because it cannot be burned through. The pottery mill designed by Luo Chong is a coaxial roller.

On the outside is a pottery tube with a diameter of one meter, a length of one meter and two meters, and a thickness of 6 centimeters. It is ventilated at both ends. Inside is a thin pottery tube with an inner diameter of 10 centimeters and a thickness of 5 centimeters.

Then the carpentry team was asked to make two round wooden boards with holes in the middle, which can just connect the two pottery tubes, one large and one small, together. Then, soil is filled into the interlayer of the two pottery tubes to increase their own weight, and the two ends are blocked with round wooden boards.

Such a pottery mill with a diameter of one meter weighs up to thousands of pounds, so it is definitely no problem to roll the road. When using it, just insert a strong wooden stick into the thin pottery tube in the middle, and it can be pulled by a cow.

If the pottery roller is not in use, or needs to be transported to another place for road construction, the two round wooden boards on the side of the pottery roller can be removed and the soil inside can be poured out to reduce the weight. In this way, two people can carry the pottery roller away, or one person can push it.

The soil inside is the counterweight, and the required weight can be freely adjusted. It is simply a heavy infrastructure tool in the primitive era.

The first trial product of the pottery roller was successful. Luo Chong waved his hand and asked the lame man to make 20 more. Such a practical and powerful roller only takes one day to make. Isn’t it better than those who chisel stone rollers?

While the lame man was firing the pottery roller, Luo Chong began to design and plan the drainage system of the entire urban area, that is, the sewer.

Sewers are a must, otherwise after the city wall is built, if there is a heavy rainstorm, the whole city will probably be flooded.

This drainage system is only used to drain rainwater. The toilets of each household will be cleaned regularly, and the excrement can be taken outside the city. A special manure pit is dug to collect it and return it to the fields after it is decomposed into organic fertilizer.

This can not only maintain the hygiene of the city, but also recycle waste. After all, manure is also a usable resource for a farming tribe.

The drainage system of the entire city is very simple, with only two levels of drainage. The first level is to dig a half-meter wide and half-meter deep ditch in the middle of each alley, knock flat bricks on the bottom, and surround it with floor tiles on both sides. A 60-centimeter floor tile is placed horizontally on top, and a blue brick with holes is left at the door of each house as a lid.

The second level of sewers is to dig a half-meter wide and one-meter deep ditch in the middle of the four "well"-shaped main roads and the ring road. The ditch is flattened and bricks are laid, and a lid is added on top. Then dig eight outlets from the main sewer of the ring road to the moat, with two outlets under each wall, so as to achieve the purpose of urban drainage.

Once it rains heavily, because the secondary sewer is half a meter lower than the primary sewer, the rainwater in the residential area will flow along the primary sewer to the secondary sewer of the main road, and finally flow into the moat.

This approach is simple to construct, without drilling underground to dig holes, and can be completed directly on the ground. Moreover, if the sewer is blocked due to long-term use, the dredging operation can be completed by simply opening the upper cover, and the later maintenance is also convenient.

After planning all the important things, the work of building the house began. Luo Chong has never learned to build a house, but he has learned reverse architecture, that is, to demolish a house, and to blast a military target, you also need to learn the building structure, but not as professionally as others.

The bricks for building the house have not been fired yet, but this does not affect Luo Chong's leading people to lay the foundation. He called 20 boys and girls from the cave tribe and prepared to train these children who love digging into a professional civil engineering construction team.

First, I took them to build a house and let them learn the whole process.

The first thing is to tell them common sense. The house for people to live in should face north and south, so that it can block the north wind in winter. The windows should face south to let the room have sufficient sunlight all year round.

Then I started to lay out the lines, find a specific construction site, and then start to dig the wall foundation trench. The foundation trench is about 80 cm deep. After digging, I started to

tamp the foundation. The tool for tamping the foundation is a sawed log with two handles installed at one

end. The log is not very thick, only about 30 cm, so a tamping hammer can be operated by one person. Pick it up and pound it down, repeatedly moving until it can no longer be pounded. The excavated soil is piled in the house, and then the floor in the house is raised. The floor in the house must be higher than the yard, otherwise the water will flow into the house when it rains. This is also common sense.

Therefore, the house of a bungalow is generally at least one step higher than the yard. It is rare for the house to be as flat as the yard.

20 boys and girls work from sunrise to sunset and can complete the foundations of two houses in one day, that is, the foundations of 6 houses. This speed is still acceptable. After the foundation is compacted, they can wait for the bricks to be laid.

(End of this chapter)