If a masonry structure has a shock, like an earthquake, the whole thing collapses.

The dam was later converted into a stone masonry structure in the 17th century.

The three-story masonry structure was built in 1850 and then remodeled several times over the next century.

The western end had a masonry structure designed to look like the clock case.

Frame courthouses were especially vulnerable to fire, and county leaders began looking for a community that would subsidize the construction of a masonry structure.

This could be constructed immediately in front of the existing thin masonry wall without disrupting services during its construction.

A new masonry wall was added, and the chain-link fencing was also replaced.

In the same period, a coat of arms showing a masonry wall with doors and two roofed towers was adopted.

For the most part, the masonry wall was about 3 m. thick, using stone from a quarry 14 km. distant.

In 1881 a masonry wall was added, greatly strengthening defence.

It was carefully dismantled and each piece of masonry was numbered with the intention of reconstructing the kirk on another site.

And when the enemy reached the top of the wall, he was hidden by pieces of masonry and hard to repulse.

By 1949 large pieces of masonry had begun to fall from the towers, which were declared unsafe.