The culprit is a molecule called gliadin, which is found in certain gluten-containing grains and causes symptoms in gluten-sensitive people. The grains that cause the greatest problems are wheat, rye, barley, spelt, and kamut; whereas corn, rice, millet, and buckwheat are generally considered safe.
The Forth Bridge's piers are constructed from 120,000 cubic yards of concrete and masonry, faced with 2 ft thick granite. 200 trains use the bridge every day, carrying 3 million passengers each year. The total painted area of the Forth Bridge is 230,000 sq metres, requiring 240,000 litres of paint.
The earliest bridge across the Tyne, Pons Aelius, was built by the Romans near the location of the present Tyne Bridge. Built around 122, it fell into disrepair, and a stone bridge was built in 1270. This was in turn destroyed by the great flood of 1771.he Tyne Bridge is a through arch bridge over the River Tyne linking Newcastle upon Tyne and Gateshead. It was designed by the engineering firm Mott, Hay and Anderson, who later designed the Forth Road Bridge, and was built by Dorman Long and Co. of Middlesbrough.