The Hagia Sophia uses masonry construction. The structure has brick and mortar joints that are 1.5 times the width of the bricks. The mortar joints are composed of a combination of sand and minute ceramic pieces distributed evenly throughout the mortar joints. This combination of sand and potsherds was often used in Roman concrete, a predecessor to modern concrete. A considerable amount of iron was used as well, in the form of cramps and ties.
The Hagia Sophia uses masonry construction The structure has brick, and mortar joints th.at are 15 times the width of the bricks. The mortar joints are composed of a c.ombination of sand and minute ceramic pieces distributed evenly throughout the mortar joints. This combination of sand and potsherds was often used in Roman concrete a predecessor to modern concrete. A considerable amount of iron was used as well, in the form of cramps and ties.