After upgrading to level 7, the underground shelter function once again adds a sky-dropping vehicle.

At the same time, due to version updates, the newly added shelter in level 3 and the new remote repair in level 5 have been eliminated, and there is no indication yet when they will be restored.

From a long-term perspective, this is the game's reminder to shelter owners to use their permissions and rewards as soon as possible and not to regret because they are eliminated in version updates.

If you were an ordinary person and were yelled at like this, you might actually use it immediately after every upgrade.

But for Somo, he was not in a hurry.

Nothing else.

The red envelope function that appears when upgrading to lv5, the rewards that may be given are simply too different.

The former is a modular item. If you open it with powerful functions, it can completely make a difference.

The latter are just some manufacturing drawings without indicating the direction and value.

In the past few days, based on the price brought by the caravan for sale, hundreds of kilograms of grain could be exchanged for one piece. If you won this item, it would be a huge loss and it would not help the development of the territory at all.

So without any way to increase the probability of drawing the former, Sumo was not willing to gamble on luck.

"Three sinking times means that the shelter can be expanded by three more floors, reaching six floors. In this way, in addition to this layer on the surface, the maximum depth underground is 24 meters!"

Thanks to the small area of ​​a single floor of the shelter, the current load-bearing structure of the two underground floors is very simple.

Even if the thickness of the stone slab reaches 600mm, it can be stably and effectively supported.

But if the single-story area is expanded from 220 square meters to 2500 square meters, a stone structure will be used.

Even if there is load-bearing optimization to help increase the load-bearing capacity by 25%, it must be well designed.

"The stone quality is no longer suitable for the expanded shelter. Even a weak earthquake will pose a great challenge to earthquake resistance."

"If you want to change it"

Sumo immediately thought of the cheapest and most useful reinforced concrete.

Transforming underground shelters into such materials can maximize living space and achieve a perfect balance among various architectural attributes.

At the same time, borrowing from human research on frame structures, the shelter can also easily plan the load-bearing locations, greatly reducing the cost of later maintenance.

but

Sumo thought about how well the reinforced concrete houses could accommodate the power of space during previous tests.

Simply too weak!

If the concrete floor slab used is thinner, it may not even have as good accommodating capacity as a wooden house.

In terms of the architectural requirements of the civilized era, a basic expansion of 20% is the limit, which is completely insufficient.

And if this kind of material is really used for the underground shelter, future upgrades will be very troublesome.

Not only did the material have to be replaced, but the survival points spent were wasted.

"In addition to reinforced concrete, wood, and stone"

Somo thought about it, he knew exactly what the underground shelter needed now.

The underground shelter needs a material that can make the villagers living there feel happy, safe, and at ease.

It may not be durable, practical, or even easy to use.

But it only needs to make those who enter feel the power of the territory and the power of the refuge.

This is enough!

If you want to replace the material later, you can change the material bit by bit.

You can start with the load-bearing columns, or you can start with the public areas.

Even if some villagers meet the requirements or have accumulated enough funds, they can apply to the territory to replace their rooms with more stable and useful materials, accommodate more space, expand the area, and launch a new income-generating project.

"I upgrade the shelter, these people upgrade their rooms, and the territory upgrades these industrial buildings."

"Good guy, it's a cycle."

After Sumo clarified the idea of ​​​​upgrading, it is self-evident that the best materials that can be selected for the current territory are self-evident.

Steel.

The strength of the steel structure is obviously higher than that of concrete, making it easier to obtain large spaces and improve the utilization rate of indoor space. Steel columns increase the load-bearing capacity of frame columns, while also increasing the stiffness of the columns and the corresponding lateral stiffness of the structure, making

The cross-sectional area of ​​the main structural components is smaller, making it much easier to upgrade later.

In addition, the ratio of the capacity of the steel structure to accommodate space is also relatively good. It can currently reach 60% when safely fully loaded. It is not a problem to increase it to 70% with a little risk.

There are two iron mountains in the territory that have not been developed much. Even upgrading a hundred underground shelters is enough.

"It just so happens that Spicy Iron Hammer's steel factory is about to open. This order should make them completely excited."

Based on the experience of previous upgrades, the game will simultaneously produce the current texture of the shelter when the shelter uses the power of space to directly expand its area.

Therefore, the best way is to first build five underground floors of 220 square meters, then replace all materials with steel, and then use the two functions of expansion and reconstruction to save a lot of material costs.

But even so, the materials needed are still a large number.

It is not a problem to let the Lianmeng Steel Plant run at full load for a period of time after it is officially put into operation.

After thinking about it clearly, Sumo scrolled down to the lv8 upgrade conditions and took a look before closing the panel.

[Underground Refuge lv8 Upgrade Preview]

[Route tendency]: The cornerstone of human technological civilization (the original upgrade conditions have been changed; the original rewards have been changed; the original new function permissions have been changed)

[Condition 1: Temporarily blocked (completed)]

[Condition 2: The main shelter has an overall area of ​​more than 1,500 square meters, more than five floors, has a complete waterway system, electric system, ventilation system, has 15 or more different activity areas, and has at least 30 separated living rooms.

Room.(Unfinished)]

[Condition 3: The technology score of the territory attached to the main shelter reaches 50 (unfinished; current: 21)]

[Condition 4: The territory affiliated with the main shelter has at least one special route (unfinished; technology direction)]

[Condition 5: The population of the territory attached to the main refuge reaches 2,000 people (completed)]

[Condition 6: The population of the territory attached to the shelter must be at least one player with a route level of lv5 or above (unfinished; current highest: lv2)]

[New function preview: sense of technology (according to the selected route, a special ability will be added randomly)]

[New function preview: Tiansheng Technology (randomly obtain a technology to small and medium-sized machines or obtain several types of manufacturing drawings)]

"Will the upgrade conditions of the shelter also undergo chain changes due to different selections of route cornerstones?"

Sumo noticed that the conditions were completely different from those when upgrading to level 7 before, and felt lucky.

Compared with before, the conditions for upgrading the shelter are now much more stringent. Just the area of ​​condition 2 and the technology score of condition 3 can stump a large number of people.

And if the other two routes had been chosen at that time, the conditions for upgrading the shelter would probably be more complicated now.

I don’t know how long it will take to upgrade to lv9 and lv10.

Of course, after the conditions became harsher, the upgrade rewards given by the game also became much better.

If you can extract a useful special ability, or drive a piece of urgently needed construction machinery, the benefits will be much more practical than the previous upgrades.

"Leave the building upgrade drawings to Ai Jianqiang to complete. Even if no one helps, the structural design of such a small shelter will definitely not be difficult for him."

"When the materials are in place, half a day will be enough for the shelter to enter a new stage!"

The white mist lingered between the sky and the earth, and the raindrops continued to fall, moistening the soil.

With the end of the winter disaster, the temperature is still rising and gradually stabilizes at around 25 degrees.

This light rain caused by rising temperatures lasted for three consecutive days.

Considering that melting snow may cause floods, Sumo was responsible for making arrangements.

A new job emerged in the General Work Administration and a new public department was established in the territory.

Digging trenches (voluntary contribution).

Requirement: Go to the fishman camp and help dig a small river hundreds of meters long and two meters deep.

Daily salary: ten iron coins-fifteen iron coins

Contribution points: 1 (daily)

Considering the amount of trench digging work, this daily salary is simply too low.

Many people have no balance at all after eating three meals, which is equivalent to a day's work in vain.

If we don't plan to forcibly recruit some of them, there will only be a lot of restless people doing it once or twice, and it will not have the effect of sorting out and blocking floods at all.

Therefore, in order to encourage the enthusiasm of the villagers, "Wolong" Qiao Yuansheng once again stood up excitedly.

After hearing Sumo talk about the prospect that everyone would move to underground shelters in the future, he immediately proposed to modify and optimize the previously proposed identity system and apply it in the territory to become a major killer to regulate the enthusiasm and work orientation of villagers.

device!

This time, identity is no longer a tool to screen whether foreigners are eligible to enter the territory.

After the reform, the identity will begin to be linked to contributions to the territory, to the quota for entering the shelter, and even to a series of actions such as purchasing land, purchasing weapons, opening factories, etc.
To be continued...