Engineering and Technology
In Ancient Rome the people made aqueducts, bridges, and amphitheaters. The machines that they'd made were cranes, water mills, grain mills, and water pumps. Their roads had four layers, the top layer was pavimentum, the second layer was the nucleus, the third layer was the rudus, and the bottom layer was statumen. Wooden bridges were built by the army. Etruscans built arch bridges made of stone.
Romans used many differnet materials to build things. The most important building material was stone. many things were built with nothing but dry stone. In Rome, strong motar was called pozzolana. They thought it was sand but it was ash from prehistoric volcano eruptions. The romans prefered to build with bricks and mortar. Romans were the people who invented concrete. Builders also used limestone burnt in a kiln to build things.
Roman Structures
Before building a road in ancient Rome, surveyors planned the road and they would aim at high points on the landscape. The roads had four layers. The buildings that they made back then people now still use the same type of buildings. They made walls to keep them safe from all of the bad people and armies. The walls were very thick and were also very sturdy. They made the buildings out of bricks. All of the buildings were big and sturdy.
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