samedi 29 septembre 2012

Airbag engineering helps save world's first pyramid


“A Welsh engineering firm that has been involved in restoration work at Buckingham Palace and the White House is helping to save the world’s first pyramid in Egypt.
Enlisted to restore the ceiling of the burial chamber of the Pyramid of Djoser, also known as the Step Pyramid, which was at risk of collapse following an earthquake in 1994, Cintec International, the British structural engineering company behind the works, is now in the second stage of the advanced process which began in January 2011. (...)
The company, based in Newport, Wales, has maintained structures such as Buckingham Palace, Windsor Castle, Ironbridge Gorge and countless castles and churches in the UK. It has also worked on the White House and the Chicago Board of Trade Building in the USA and the Canadian Parliament Building using its highly advanced and innovative engineering systems.
The latest stage of the pyramid work, which is worth £1.8m, follows the stabilisation of the ceiling using specialist Cintec airbags, and involves testing a lime grout mixture compatible with the interior of the pyramid and pointing this around the jagged stones in the ceiling to stabilise individual stones.
These stones are then drilled and a specialist anchor inserted 4m or more into the structure to knit the stones together, thus preventing further collapse and protecting the structure for hundreds of years.
Peter James, MD Cintec International, said: "As well as preventing its collapse, the aim of the project is to allow the public inside the pyramid’s burial chamber, allowing the iconic structure to be fully appreciated once again having been closed off for many years."
(Global Trader)