jack post
Let an agent explain jack posts, relay their use, adjustment and safety from construction sources, note the Acrow trade name, route temporary-works safety, and distinguish jack posts from permanent columns, scaffolding, shoring and jacks used for lifting.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What a jack post is.
Definition
Definition.
Definition
Definition.
- Is a prop supporting a load, in which case it must be correctly sized, plumb and not removed early, with temporary works designed and inspected by competent people? boundary
- What is a jack post, and how does it differ from permanent columns, scaffolding, shoring and lifting jacks? definition
Trade name
Acrow prop.
Trade name
Trade name.
- Why is Acrow prop used as a generic term? definition
- Which entry fits Acrow? action
Use Use.
Adjustment
Adjustment.
Adjustment
Adjustment.
- How are jack posts adjusted to length and locked? provenance
- Which references are standard? provenance
Applications
Applications.
Applications
Applications.
- Where are props used in construction and basements? provenance
- Which sources are cited? provenance
Safety Safety.
Loading
Load limits.
Loading
Loading.
- Why must props not be overloaded and be on firm bearing? provenance
- Is the information current? boundary
Temporary works
Temporary works.
Temporary works
Temporary works.
- Why should temporary works be designed and inspected? provenance
- Which entry fits temporary works? action
Context Standards.
Standards
Prop standards.
Standards
Standards.
- What standards govern adjustable props? provenance
- Is the information accurate? boundary
Formwork
Formwork support.
Formwork
Formwork.
- How are props used to support formwork during concreting? provenance
- Which entry fits formwork? 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
- Acrow prop
What it is Filled
A jack post, also called an adjustable steel prop or, by the trade name, an Acrow prop, is a telescopic vertical support used in construction to hold up floors, beams or formwork temporarily or, in shorter basement versions, permanently, adjusted to length by a threaded collar and pin; props must be correctly sized, plumb, on firm bearing and not overloaded, and misuse or removing props too early can cause dangerous collapse, so temporary works should be designed and inspected by competent people.
Why it exists Filled
Let an agent explain jack posts, relay their use, adjustment and safety from construction sources, note the Acrow trade name, route temporary-works safety, and distinguish jack posts from permanent columns, scaffolding, shoring and jacks used for lifting.
Distinguishing features Filled
- Telescopic steel prop
- Adjustable length
- Temporary or basement use
- Load-rated
What robots and AI may and may not do Filled
Must not
- Load a jack post beyond its rating or with an extended length it is not rated for.
- Remove or adjust temporary props before the structure is able to stand without them.
- Use a jack post as a lifting jack.
- Leave a temporary prop as a permanent support without engineering approval.
Only with a human decision
- Deciding when temporary propping can be struck.
- Using props to support a structure that has already moved or cracked.
May
- Check a jack post's rated load and condition against its marking or manufacturer data.
- Report props that are bent, corroded, not plumb or standing on soft ground.
Moral aspects Filled
- A failed prop can bring down a floor on workers and occupants.
- Shortcuts under time pressure are a common cause of collapse.
Who is affected
- Construction workers
- Occupants
- Passers-by
Owners Filled
Steward
The contractor in charge of temporary works on site; the engineer answers for the propping design.
Links to other meta-models Filled
parent
- Q811430 - registry parent class
related
- structural support - in registry terms
- column
- scaffolding
- jack (device)
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.jack-post
- Wikidata: Q2313763 (https://www.wikidata.org/wiki/Q2313763)
Direct properties required Filled
- adjustment: threaded collar and pin note
- Acrow: a trade name note - often used generically
- registry parent: fixed construction note
Recognition required Filled
- Adjustable steel prop supporting loads
- Acrow prop
- Permanent columns are fixed structure; scaffolding provides access; shoring supports excavations; lifting jacks raise loads rather than hold them
- A telescopic steel tube with a threaded adjustment collar and base and head plates.
Capabilities and actions required Filled
- explain use and adjustment
- relay safety
- note the trade name
- distinguish related supports
Hazards and failure modes required Filled
- Collapse from overloading or early removal
- Buckling if not plumb or on firm bearing
- Confusing props with lifting jacks
Standards and interfaces required Filled
- Standards for adjustable props such as EN 1065
- Temporary works design and inspection rules
Context of use required Filled
- Temporary or adjustable vertical structural support.
- temporary props
- permanent basement jack posts
- formwork props
Sources Filled
- Wikidata item Q2313763: jack post - identity and sense of the item
- Wikipedia: Jack post - general description of the item
Open questions
- Should permanent basement jack posts be a separate entry?
- How should temporary works standards be linked?
- Should the Acrow trade name be noted as generic?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q2313763/spec.json