Arches – Which type is preferred in high-class buildings where appearance is paramount? Select the arch type commonly used in high-quality architectural work where fine appearance and precise joints are of primary importance.

Introduction / Context:
Arches can be built from stone or brick, and the finish quality varies with how units are shaped and laid. In prestigious buildings, the visual precision of joints, arrises, and profiles is critical. This question asks you to identify the arch type associated with fine, high-class appearance when brickwork is used.

Given Data / Assumptions:

• Appearance and finish are the primary criteria.
• Brick units may be specially prepared for tight joints and smooth profiles.
• Stone options exist but the focus is on common terminology for brick arches.

Concept / Approach:

Gauged brick arches employ soft, fine-textured bricks that are cut or rubbed to precise shapes and sizes, producing very thin joints with lime putty or fine mortar. The resulting sharp arrises and uniform joints suit high-class façade work. By contrast, axed brick arches use roughly cut bricks with comparatively thicker joints; rubble arches are coarse. Ashlar arches (stone) are also high-grade but the classic textbook association for fine brick appearance is the gauged brick arch.

Step-by-Step Solution:

Verification / Alternative check:

Construction manuals describe gauged work with joints as thin as 1–3 mm using lime putty; elevations display crisp profiles.

Why Other Options Are Wrong:

Rough finish or stone category does not match the typical brick-focused requirement for fine appearance.

Common Pitfalls:

Assuming any dressed stone arch answers a brickwork question; overlooking the distinction between gauged and axed brickwork.

Final Answer:

Gauged brick arch