arch
Let an agent handle arches by form, material, structural behaviour, condition and heritage.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle arches by form, material, structural behaviour, condition and heritage.
A curved structure spanning an opening and supporting weight above it, in forms such as round, pointed, flat and diaphragm arches, built of stone, brick, wood or iron.
What it is for: Spanning openings and carrying loads in buildings and bridges, and as monuments.
It can be design and build it; assess its stability; repair and conserve it; identify its style.
Distinguishing features
Carries load mainly in compression
Needs abutments to resist thrust
Forms define architectural styles
Freestanding arches are monuments
What it looks like
A curved span over an opening; triumphal arches and whalebone arches are freestanding forms.
Physical character
span: 0.5-500+ m - masonry to steel bridge arches
How it is recognised
Curved span with springings and keystone
Forms such as pointed or round
Materials from stone to iron
Related models
is a kind of - element
is part of - use
carries - structure
is protected as - listing
In practice
Families and kinds
round and segmental arches
pointed arches
flat arches
diaphragm arches
triumphal and memorial arches
Standards and regulation
Masonry assessment codes
Heritage protection law
Failure modes and hazards
Collapse from abutment movement
Keystone or mortar failure
Vehicle strikes
Also called
+3
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.arch-artifact
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Form Shape and style.
Form defines behaviour and style.
Shape
Round, pointed.
Shape
Arch form.
- What form is the arch? definition
- Which style does it indicate? definition
Material
Stone, brick, iron.
Material
Material.
- What is it built of? definition
- When was it built? provenance
Structure How it works.
Arches rely on thrust and abutments.
Behaviour
Compression and thrust.
Behaviour
Structural behaviour.
- How does the arch carry load? definition
- What resists its thrust? definition
Capacity
Assessment.
Capacity
Assessed capacity.
- What load can it carry? measurement
- How was it assessed? provenance
Condition State and repair.
Condition affects safety.
Defects
Cracks and movement.
Defects
Defects.
- Are there cracks, spreading or displaced stones? measurement
- Is it safe? boundary
Repair
Conservation.
Repair
Repair approach.
- How should it be repaired? action
- Which specialists should be involved? action
Heritage Protection.
Historic arches are protected.
Status
Listing.
Status
Protection.
- Is the arch protected? provenance
- What consent is needed? boundary
Meaning
Monuments.
Meaning
Commemorative meaning.
- Does it commemorate something? provenance
- Is its meaning contested? boundary
What the second pass must settle
- Should arch forms be separate entries?
- How should structural assessments be recorded?
- How should freestanding arches be linked to monuments?