bleacher
Let an agent explain bleachers and grandstands and their kinds, relay safety codes and design from building and event sources, describe historical spectator seating forms, and distinguish bleachers from stadium stands and seating in general.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What bleachers are.
Definition
Definition and kinds.
Definition
Definition.
- What are bleachers and grandstands, and how do open, covered, portable and telescopic forms differ? definition
- Is the question about spectator bleachers, choir stands or the ancient theatron? boundary
Forms
Performance and historical forms.
Forms
Forms.
- What are choir stands and risers, and how did the Greek theatron seat audiences? definition
- Which entry fits the specific form? action
Design Design and safety.
Codes
Safety codes.
Codes
Codes.
- What do ICC 300 and other codes require for loads, guards, aisles and egress? provenance
- Which references are standard? provenance
Inspection
Inspection.
Inspection
Inspection.
- How are bleachers inspected and maintained, and what caused notable collapses? provenance
- Which entry fits stadium safety? action
Use Use.
Venues
Venues.
Venues
Venues.
- How are bleachers and grandstands used at sports grounds, racecourses, schools and events? provenance
- Which sources are cited? provenance
Temporary
Temporary stands.
Temporary
Temporary.
- How are temporary grandstands erected and certified for events? provenance
- Which entry fits temporary structure? action
Context History and culture.
History
History.
History
History.
- How did tiered seating develop from Greek and Roman theatres to modern grandstands? provenance
- Which entry fits the history of stadiums? action
Culture
Culture.
Culture
Culture.
- What is the cultural place of the bleachers in school sport and American life? provenance
- Which entry fits sports culture? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.BLT
- Other names and narrower kinds
- choir stands, main grandstand, theatron
What it is Filled
A raised tiered structure of seating for spectators, from simple open benches at sports fields to grandstands with roofs and main grandstands at stadiums and racecourses, and the ancient theatron of Greek theatres; bleachers may be permanent, portable or telescopic, and are governed by safety codes for loads, guards and egress.
Why it exists Filled
Let an agent explain bleachers and grandstands and their kinds, relay safety codes and design from building and event sources, describe historical spectator seating forms, and distinguish bleachers from stadium stands and seating in general.
Distinguishing features Filled
- Tiered structure
- Open or covered
- Portable and telescopic forms
- Safety regulation
What robots and AI may and may not do Filled
Must not
- Approve a temporary stand as safe in place of a qualified inspector.
- Advise overcrowding a stand or ignoring its capacity.
- Suppress reports of loose boards, missing guards or structural damage.
- Encourage people to stand on rails or climb the structure.
Only with a human decision
- Deciding to open, close or evacuate a stand.
May
- Describe types of bleachers and the safety codes that govern them.
- Report inspection status and capacity limits from the venue operator.
- Monitor crowd numbers against a stand's capacity for an operator who authorises it.
Moral aspects Filled
- Stand collapses and crowd crushes have killed many spectators.
- Children fall through gaps in poorly guarded bleachers.
Who is affected
- Spectators
- Children
- Venue staff
Owners Filled
Steward
The venue owner or operator; building authorities approve the structure.
Links to other meta-models Filled
parent
- Q22079390 - registry parent class
related
- platform - in registry terms
- stadium - and sports venues
- theatron - of ancient Greek theatres
- building code - for safety
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.bleacher-q2067349
- Wikidata: Q2067349 (https://www.wikidata.org/wiki/Q2067349)
Direct properties required Filled
- design live load: about 5 kN/m^2 - typical codes
- theatre of Epidaurus capacity: about 14000 seats
Recognition required Filled
- Bleachers provide tiered spectator seating.
- Spectator seating forms include open bleachers, grandstands, main grandstands, telescopic bleachers and theatron seating.
- Stadium bowls are integrated, auditorium seating is enclosed, and a podium is for speakers.
- Rows of tiered benches or seats rising away from a field or stage.
Capabilities and actions required Filled
- explain kinds
- relay safety codes
- describe historical forms
- distinguish from other seating
Hazards and failure modes required Filled
- Collapse of temporary or poorly maintained stands
- Falls through gaps and from heights
- Crowd crushes at overcrowded stands
Standards and interfaces required Filled
- ICC 300 standard for bleachers and grandstands
- National building and event safety codes
- Guide to Safety at Sports Grounds in the UK
- Accessibility requirements
Context of use required Filled
- Seating spectators or performers in tiers.
- open bleachers at school and community fields
- grandstands and main grandstands at stadiums and racecourses
- telescopic and portable bleachers in gyms and halls
- choir stands and risers
- the theatron of ancient theatres
- temporary event grandstands
Sources Filled
- Wikidata item Q2067349: bleacher - identity and sense of the item
- Wikipedia: Bleacher - general description of the item
Open questions
- Should grandstand and theatron be separate primary entries?
- How should safety codes be linked?
- The registry entry has merged aliases naming performer stands and ancient forms; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q2067349/spec.json