Desert sun can warp steel railway tracks by ten centimeters
The intense heat of the Arabian desert is powerful enough to bend heavy Ottoman steel, forcing engineers to redesign the world's most vital transit corridors.
The Hejaz Railway was an engineering marvel that once ferried 300,000 pilgrims a year through the unforgiving deserts of the Middle East. Built in 1908 using a narrow-gauge track of just 1,050 millimeters, the line faced a constant battle against the sun. Because steel expands when hot, the desert heat would warp the tracks by up to 10 centimeters every day, creating a serpentine path that could derail a locomotive. To survive, the railway utilized adaptive metallurgy and unique concrete arches that proved more resilient than steel against both the heat and regional tremors.