Jinan after the defeat of Jiannu is like a construction site, as a construction site, Jinan is messy and noisy, and on both sides of the street, there are busy workers everywhere. This is not only the need of "cash for work" to make the people sustain their livelihood, but also the need for post-war reconstruction.

In addition to wood, building materials such as bricks are ready-made, after all, the fire only burned the wood, not the bricks, with ready-made bricks, the speed of the building is naturally much faster, just like the governor's yamen, so that the skeleton of the official hall building has a little appearance, in fact, the first batch of reconstruction, that is, the official office and other "official halls", after all, these houses are paid by the government, as for the wages issued, it itself is necessary for "work for relief".

There are construction workers on the construction site who are busy, and at the edge of the construction site, a wooden sign stands, I don't know if it was hit by something and tilted to the side, with four big characters written on it: "Governor Yamen".

Just when the craftsmen were busy, the group had already ridden to the construction site, led by Zhu Guoqiang, and Song Xuezhu and others also followed behind him.

After getting off the horse, Song Student stepped forward to straighten and insert the sign of "Governor's Yamen" again, and then looked at the wall that had been built on the construction site.

"In a few days, this yamen will almost be repaired."

"Xu Chu, you built it here very quickly!"

Zhu Guoqiang smiled and looked at the yamen and said.

"In fact, the most labor-intensive thing to build a house is to lay the foundation, although the fire burned down the house, but the foundation is mostly intact, as long as the broken wall is knocked down, and then the old foundation is rebuilt, a few people can rebuild a wall in a day......

"The wall is easy to build, but the roof truss beam bucket is not easy to do, not only because there are few carpenters, but also because the wood for the beam and beam bucket is not used for a while, so it is still necessary to delay some effort."

"Lifting beams?"

In confusion, Zhu Guoqiang saw that the craftsmen in the wall were busy there, they were putting the roof truss on the beams and pillars, the span was only six or seven meters, and the house actually needed four thick wooden pillars as pillars, and the roof trusses on it also needed a lot of thigh-thick wood, looking at these woods, Zhu Guoqiang was puzzled.

"Why don't you use a truss?"

As soon as the words fell, Zhu Guoqiang suddenly realized that the truss of this era has not yet been introduced to China!

Ancient Chinese architecture did not develop truss structure, and there was no wooden truss roof truss that was common before modern times. However, even so, whether it is a beam-lifting or bucket-piercing structure, a lot of wood is wasted.

"Trusses?"

Song Xuezhu wondered.

"Lord Shizi, what is a truss?"

"It's a triangular truss."

Casually breaking a branch from the ground, Zhu Guoqiang said as he drew its structure on the ground.

"The triangular truss shape is consistent with the moment diagram of the concentrated load in the span of a charisted beam, it is more efficient than the beam structure, and does not exert thrust on the supports like the arch......"

As an engineering student, Zhu Guoqiang certainly knows the advantages of "triangular trusses" and the two major characteristics of ancient Chinese house architecture: the use of civil engineering materials and the use of frame structures. The Yellow River Valley, the birthplace of Chinese civilization, has large areas of forests and thick loess, but bare stone is rare. Therefore, the most common building materials are earth and wood, and rammed earth walls and timber-framed houses have been developed according to local conditions. Due to the power of habit, even later the use of masonry materials on bridges and city walls, house construction has always been dominated by wooden structures. After the Song Dynasty, there were normative documents such as "Construction of the French Style", which stipulated the shape and craftsmanship of wooden structure buildings, and further limited the development direction of architectural forms.

At the same time, the frame structure of ancient Chinese architecture makes the interior space less restrictive, except for those thin columns that cannot be moved, all partition walls can be changed, and the number of spans can be increased arbitrarily. In this way, it can also create a large space effect with Chinese characteristics, and this large space with pillars can meet the needs of palaces and temples, so there is no deliberate pursuit of large spans.

However, this kind of frame structure is not suitable for residential buildings, and even too much waste of wood and labor. This is the reason why in modern times, in a very short period of time, the triangular truss quickly replaced the traditional frame beam bucket in the north and south of the river.

"You see, a triangular truss like this only needs a middle column and two partition braces to support the roof, and even if it is connected, it only needs a few iron nails to fix it, which saves labor and labor, and of course saves ......materials."

Looking at the pattern that the prince casually sketched on the ground, Song Xuezhu and the others were dumbfounded, they didn't expect that Liang Dou could be so simple.

"This, can such beams hold up the roof?"

At this moment a craftsman was walking past them, and when he saw this, he stopped, and when he walked over and looked at the random drawings on the ground, he stopped, as if thinking of something.

"Yes, yes, that's right, that's ......"

The craftsman was talking to himself while gesturing something with a small branch, and seeing this, Zhu Guoqiang did not disturb him, but looked at him curiously.

Suddenly, the craftsman shouted in surprise as if he had figured out something.

"That's amazing!"

"Oh, how do you say?"

"You see, this column, and these two short braces, they are bracing and pulling the main beam, so one brace and one pull, this beam is that strong, not to mention anything else, this material has to save at least half of the ......."

Looking at the craftsman appreciatively, Zhu Guoqiang asked.

"You can see the benefits of it......"

"Why can't you see ......?"

The craftsman gave the men a strange look, and then tried to ask.

"This is what that gentleman came up with, this thing is really not simple, even if Lu Ban is reincarnated, it is nothing more than that......"

The craftsman's words surprised everyone, and someone walked over and whispered to the craftsman.

"This is the prince of the world."

"Lord Shizi!"

The foreman looked at the pattern on the ground in amazement, he didn't associate Zhu Guoqiang, who was dressed in cloth, with the prince at all, but stared at the pattern on the ground and said excitedly.

"Oh, could it be that this was brought by the prince from the Heavenly Palace? Pillar, quick, hurry up and shout the big guy to come over ......"

Looking at the excited appearance of the craftsman, Zhu Guoqiang's heart was speechless for a while, it was just a "triangular truss", and it actually became from the Heavenly Palace again.

The next scene seemed a little ridiculous, only to see the craftsman trotting over, followed by dozens of craftsmen-like people.

I saw that they set up a table in that open space, put some food, and then actually ...... The incense was put on, and even the words were chanted in the mouth.

"Thank you" Huo De Zhenjun "The prince of the world is very kind and kind, and he gives the little people the immortal Liang ......"

The scene in front of them made everyone stunned, they looked at these craftsmen who kowtowed to incense, and then looked at the prince of the world, that gaze can be described as extremely complicated.

Although I don't know what the future holds?

But looking at this scene, Zhu Guoqiang, who couldn't cry or laugh, knew that this triangular truss would definitely take root in Jinan......