The treads are separate and rebated, but without any additional stonework across the window.
These include the development of rain-screen fixing details which largely alleviate the problem of failure due to differential movement over large areas of stonework.
At bottom the flutes are a specific cultural mediation of the brute, rough-cut stonework from which the column is assembled.
Two features deviate and use a different style of stonework.
Large panels of complex stonework can be preassembled in this manner reducing construction times and facilitating precision fixing.
With external openings, the stonework surroundings are carved providing both essential weathering properties and exploiting the opportunity for aesthetic play.
The museum refers to castle architecture - the main core galleries forming the tower or keep and the outer zone, with its heavy stonework, a surrounding wall.
Hand-set stonework is a traditional method of fixing and particularly suits limestones and sandstones.
