Question: what materials were used to build wembley stadium?
Answer: Wembley Stadium features The construction required 90,000m³ of concrete, 23,000t of steel and 35 miles of heavy-duty power cable. Four thousand separate piles were used to form the foundations, the deepest of which was sunk to 35m. The stadium roof rises 52m above the pitch and the circumference of the building is 1km.