Page 82 - How It Works - Book of Amazing Answers To Curious Questions, 12
P. 82

�  AMAZIG ANSWERS TO CURIOUS QUESTIONS ------------------


































           Gates
           The  Romans would build four
           gates at each side of the fort.
           They consisted of large,
           recessed doors made of
           thick, strong timber.

         What did




         Roman f                                  Ort





         lool< lil<e?




         Discover how the Roman invaders constructed their
         many strongholds around Britain

                hen the Romans invaded Britain, they   placing mortar and stone in large wooden frames,   undertaken by soldiers. Officers known as
                monopolised native strongholds. As   and the result was a facing that has endured   metatores were sent to mark out the ground for an
         W  time passed, they built base camps   centuries. Opus caementicium was regarded as   encampment, using a graduated measuring rod
         that allowed their armies to travel safely through   an innovative discovery, enabling the Romans to   known as a decempeda. Each fort was erected
         the country. At first they fortified these camps   create complex structures such as the arch and   with a wide ditch, and also included a stockade or
         with timber, then from the 2nd Century AD they   the dome.           defensive barrier made of timber posts or stone.
         used stone. The Romans were expert builders   Engineers built their forts on modified terrain   The Romans used the residue earth from the
         and had perfected the art of masonry by creating   -often choosing the summit or the side of a low   ditch to create a rampart. While tradition dictated
         a revolutionary new material that was known as   hill, near a river or stream. Roman strongholds   that each fort had four stone gateways, it was
         'opus caementicium' -a concrete made of rock,   were built by a specialist corp that included a   equipped with watchtowers that could reach an
         rubble or ceramic tiles. Walls were built by   chief engineer; much of the manual work was   impressive nine metres (30 feet) high.

         82     How It  TtOrks                  WorldMags.net
                                                WorldMags.net
   77   78   79   80   81   82   83   84   85   86   87