So, when they learned that a wealthy man wanted to build an impenetrable underground base, the contractors were all eager to try, because the materials they had were already available.
However, Zeng Qi directly proposed to use C140 concrete to pour the entire underground bunker.
You should know that C140 is the most expensive concrete, and the price per cubic meter is as high as 5,000 Chinese yuan.
It is currently the highest grade concrete in the world, with a bearing capacity of up to 140 MPa, which is equivalent to 3,000 elephants standing on it at the same time without any damage.
It is said that the concrete used on China's South China Sea islands and reefs costs as much as 27,000 yuan per bag and can withstand repeated bombing by bombers carrying 10 tons of explosives, leaving traces no more than one centimeter.
After hearing the employer's request, the contractors couldn't stop smiling. This was undoubtedly a very generous client.
Many people began to use their own networks to race against time to find solutions for their employers.
In addition to concrete, Zeng Qi purchased a large number of containers to surround the entire villa and make it look like a maze.
The real purpose is to confuse the enemy and make them think that the attack is not difficult.
Wave-breaking blocks are the third line of defense prepared by Zeng Qi and will be placed around the villa.
What are wave breakers? Those who live by the sea have probably seen them: they are four-cornered cones piled on the shore to offset the impact of waves.
The purpose of placing wave-breaking blocks is to increase the difficulty of enemy attacks.
The terrain is rugged and uneven, which affects the charge, and once you fall in, it is difficult to rescue you.
The four-corner cone wave-breaking block, like a cross lock, was originally used to prevent tanks. Unexpectedly, an unexpected discovery was made when it was abandoned on the beach.
Zeng Qi’s requirement is that the wave-breaking blocks must be hard, and the price is not a problem.
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