Spanalls

Spanalls, also known as spanwells or spanwells, are structural elements used in construction to span across an opening or gap, typically between two walls or columns. They are commonly employed in masonry, brickwork, and stonework to create a continuous, uninterrupted surface. Spanalls are designed to distribute the weight of the structure above them evenly, preventing the walls from bowing or collapsing.

There are several types of spanalls, including:

1. Brick spanalls: Made from bricks, they are used in masonry construction to span across openings.

2. Stone spanalls: Crafted from natural stone, they are used in historic or traditional buildings.

3. Concrete spanalls: Made from concrete, they are used in modern construction to span across larger openings.

Spanalls are typically installed during the construction process, with the mason or builder carefully laying the bricks or stones to ensure a smooth, level surface. They are an essential component in the construction of arches, vaults, and other structural elements that require a continuous, uninterrupted surface.