What is a rose window?
A rose window is a large circular window whose stone tracery radiates from the centre — the signature feature of the Gothic cathedral.
What is a smoke compartment?
A smoke compartment is an enclosed part of a building that limits how far smoke can spread, so that escape routes stay usable.
What is a slate ripper?
A slate ripper is the slater’s tool for pulling out the nails holding a slate on the roof, working blind beneath the covering.
What is the red-for-red scheme?
Red-for-red is a Dutch municipal scheme granting a building plot for a house in return for demolishing redundant agricultural buildings.
What is a roundel in fortification?
A roundel is a thickened, lowered and roughly semicircular projection of a fortification wall, built to mount flanking artillery.
What is a round-arched frieze?
A round-arched frieze is an arched frieze of small semicircular arches, usually a horizontal band closing the top of a façade.
What is a round arch?
A round arch is an arch shaped as a semicircle, with its centre on the springing line. Here is how to build one and what to watch for.
What are Roman numerals?
Roman numerals are the letter system I, V, X, L, C, D and M used for dates on datestones, wall anchors, sundials and clock faces.
What is Roman architecture?
Roman architecture is the building art of the Roman Empire, built on the round arch, the vault, the dome and on opus caementicium — Roman concrete.
What is a rhombic roof plane?
A rhombic roof plane is a roof surface shaped like a diamond or an inverted kite, used above all on tower spires.