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Semi-Arch (Stone) - Version 7 vs Version 8
May 23, 2026, 08:35 PM
Corrected wikilink existence flags
Jun 4, 2026, 07:25 PM
Removed duplicate in-body wikilinks
112233A semi-arch made of stone4455Category: Windows and Doors - Arches6677Details8899Properties10101111PropertyValueMax Health1,5001212Build Cost13131414Duration: 1s15151616IngredientQuantityStonex21717Taught By18181919PlanPlans: Columns and Arches2020Overview21212222Semi-Arch (Stone) is a half-arch Arches building piece cut from stone. Where a full arch spans a whole opening, a semi-arch covers one side of the curve, so two of them (or a semi-arch joined to a wall or column) can frame an asymmetric entrance, a corner, or the end of a colonnade. It belongs to the same decorative family as the plaster arches and the column pieces.23232424Construction and Placement25252626The semi-arch is placed in build mode like any other Base Building component, snapping onto an adjacent wall, beam, or column. Because it only resolves half of an arch shape, it is handy for fitting curved detail against a flat surface or for terracing one side of a passage. It is designed to sit with the matching Column (Stone) and Column Base (Stone) from the same plan.27272828Materials and Recipe29293030Each semi-arch costs only 2 Stone, making it one of the cheaper pieces in the set, and it places in about 1 second. The recipe comes from the Plans: Columns and Arches blueprint, which also teaches the full arches, columns, bases, and capitals.31313232Durability33333434Its Max Health is 1,500, the same durability as the larger plaster arches despite the lower stone cost. That makes the semi-arch an efficient, hard-wearing piece for detailing exposed corners of a base where you still want the structure to soak up damage before breaking.35353636Columns and Arches Set37373838The semi-arch shares the Plans: Columns and Arches blueprint with the rest of this set. Combine it with the matching columns, bases, capitals, and full arches:39394040PiecePart TypeMaterialArch (Plaster)ArchPlasterLarge Arch (Plaster)Large archPlasterTall Arch (Plaster)Tall archPlasterSemi-Arch (Stone) (this page)Semi-archStoneSemi-Arch (Plaster)Semi-archPlasterArch Beam (Stone)Arch beamStoneArch Wall (Plaster)Arch wallPlasterColumn (Stone)ColumnStoneColumn (Mahogany)ColumnMahoganyColumn Base (Stone)Column baseStoneColumn Base (Mahogany)Column baseMahoganyCapital (Stone)CapitalStoneCapital (Mahogany)CapitalMahogany4141Build Tips42424343Two semi-arches placed mirror to mirror read as a single wide arch, which is a cheap way to span a gap when you are short on Stone. A single semi-arch is also the natural way to finish the open end of a colonnade against a wall. Keep its low cost in mind when you are decorating at scale, as it is one of the most material-efficient shapes the plan unlocks.