Yes lol
A steel door, diamond bars
Anderson shelters were air raid shelters made from galvanized corrugated steel panels. The metal was shaped into a shelter capable of holding six people and then partially buried in the ground.
Because the man who invented the Anderson shelter his surname was Anderson its just the same as the Morrison shelter too!!!
Two common types of air raid shelters used during wartime were the Anderson shelter and the Morrison shelter. The Anderson shelter was a prefabricated steel structure designed for backyards, providing protection for families. The Morrison shelter, on the other hand, was a heavy steel table designed for use indoors, offering a refuge during air raids. Both shelters were part of civil defense measures to protect civilians during bombing raids.
thay used to have earth and leaves
incas used sticks and bricks to make their own shelter.
They lived in longhouses and used bark from all kinds of trees to build it
Americans used steel to build bridges and skscapers.
The material used to build the bridge was wood and steel
Steel
Glass and steel
Its a stronger type of steel and 60 ksi steel was used to build Taipei 101.