It is a well known fact that in Rome, undiscovered treasures and artifacts may lie a mere 30 feet below the surface. Therefore, building an underground subway in the city of Rome is no easy feat. The dilemma is how to build without disturbing any antiquities that may lie buried and undiscovered below its spectacular roads and streets.
Compared to other European capitals, Rome’s subway is far less developed. For years, Rome’s 2.8 million citizens relied solely on two scant subway lines that fell short of meeting the city’s transportation needs. The two lines don’t even connect and they do not come near to the historical city centre. Being one of the oldest cities in the world, the construction of a subway poses many difficulties. Rome is built upon a labyrinth of tunnels, catacombs, vaults, and ancient sewer systems.
During the construction of the first two subway lines in the 1950’s, each excavation exposed archaeological remains and the construction had to be stopped to allow the local archaeologists to check their significance. Alternate routes had to be thought-out and determined if the discovery proved valuable to the history of the Romans.
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Pergolas and formal stylized outdoor entertaining areas have been a mainstream trend in building construction in Australia over the past few years. New and existing homes are adding style and ambiance to their outdoor facades so friends and family can easily entertain all year round. The traditional ‘Aussie’ barbecue has become much more sophisticated with emergence of gourmet cooking outdoors with chef like barbecue kitchens. The need for our outdoor entertaining areas to become more stylized and functional has been the result.
When planning and designing a new pergola one of the main construction considerations is selecting the type of roofing material you want for your pergola in line with your needs. There are a number of different types of roofing available including polycarbonate, colorbond steel, tiles and opening roofs.
The first point to consider when making your selection is that the more light you let in, the more heat comes in. The catch being of course, that you need more light in winter and less in summer. There are a few ways around this problem, firstly you can use a combination of polycarbonate and colorbond steel incorporating 2 or 3 sheets of polycarbonate inserts and having the rest of the pergola roof in colorbond steel. This will effectively still let the light in that you need and the pergola climate underneath will remain comfortably cool. Another alternative is to have colorbond steel on the west side of the pergola and polycarbonate sheeting on the other, if the pergola has a gable roof.
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