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This spelling does not appear in dicionaries or google —Dogears 04:11, 2 February 2007 (UTC)[reply]

My dictionary says Centring, centering, centreing, sen'ter-ing n. (archit.) the framework upon which an arch or vault of stone, brick or iron is supported during construction. Chambers's twentieth century dictionary, Revised edition with supplement.

Move if you like, but all three are valid. --Mcginnly | Natter 10:43, 2 February 2007 (UTC)[reply]

I wrote a separate article on the subject:

• Scope & depth: The U.S. practice has substantial, sourced technical content (types of wooden/trussed centers; load paths; striking methods; dry-laid vs. mortared rings; early mortar-strength guidance) that would overbalance this general article if kept in full (see WP:SPINOUT).
• Independent coverage & sources: Multiple reliable, non-trivial sources cover American practice specifically (textbooks, standards, and HAER documentation). See “Initial sources” below.
• Terminology/ENGVAR: The parent article uses British “centring.” A U.S. practice page naturally uses American “centering,” and can treat spelling and practice differences without crowding the global article (see WP:ENGVAR and WP:AT).

Proposed title

• Centering (masonry) — American practice

(Parenthetical in lowercase per WP:NATURALDIS/WP:PRECISION. Open to alternatives such as “Centering (United States masonry)” if editors prefer clearer geography.)

What remains in this article (Centring)

• Concise definition, global/chronological overview, and a brief note on spelling variants.
• A hatnote {{For}} at top.

What is in the new article

• Description of rib/lagging frames, common vs. trussed centers, span ranges, supports/wedges.
• Load considerations (haunch reactions; friction uncertainty).
• Striking practices and timing, distinguishing dry-laid vs. mortared rings; historical curing/strength understanding and later standardization (7- and 28-day tests).
• Documented American examples (e.g., Union Arch/Cabin John; Old Croton Aqueduct Sing Sing Kill; early highway/rail culverts and arches).

Initial sources (selection)

• Ira O. Baker, A Treatise on Masonry Construction (7th ed., 1889), esp. pp. 515–527 and p. 89 (Google Books: https://books.google.com/books?id=B69IAAAAMAAJ).
• HAER documentation (Library of Congress), e.g., Sing Sing Kill Bridge item record: https://www.loc.gov/pictures/item/ny1178/ ; Philadelphia & Reading Susquehanna River Bridge data pages (2001): https://tile.loc.gov/storage-services/master/pnp/habshaer/pa/pa3700/pa3729/data/pa3729data.pdf
• Brick Industry Association, Technical Notes 31: Brick Masonry Arches (1995): https://www.gobrick.com/media/file/31-brick-masonry-arches.pdf
• Frank E. Kidder, The Architect’s and Builder’s Pocket-Book (1905), arch-centering/striking guidance (IA: https://archive.org/details/architectsbuilde00kiddrich)
• U.S. Bureau of Standards, Government Specification for Portland Cement, Circular No. 33, 3rd ed. (1917), 7- and 28-day strengths: https://www.govinfo.gov/content/pkg/GOVPUB-C13-0ffe684f4850a1e388c54c0751c5c429/pdf/GOVPUB-C13-0ffe684f4850a1e388c54c0751c5c429.pdf
• Context studies: Minnesota Masonry-Arch Highway Bridges MPDF (2012): https://mn.gov/admin/assets/Minnesota%20Masonry-Arch%20Highway%20Bridges%20MPDF_tcm36-445042.pdf

Implementation

1. Add a top hatnote here:
   For the American practice of centering in the 19th century, see Centering (Masonry).
2. Create a new Centering (masonry) with a neutral, source-based outline (Description; Types; Load/analysis; Striking; Applications; Legacy).
3. Cross-link from related pages (e.g., Falsework, Formwork, Old Croton Aqueduct, Union Arch Bridge).

Cheers Risk Engineer (talk) 16:53, 31 October 2025 (UTC)[reply]

This comment appears to be generated by an AI. Викидим (talk) 21:36, 31 October 2025 (UTC)[reply]

I added a hatnote to this article cross-referencing the other article (Centering (Masonry). No part of this article’s prose was developed with limited assistance from GPT-5 (OpenAI, October 2025). However, I did use the LLM to create a talk page summary of the new article and did not disclose the action. This was not in compliance with Wikipedia's policy to disclose. At the time that I drafted the Talk page article, I was unaware of Wikipedia's LLM disclosure policy. I am correcting that with this statement. Cheers Risk Engineer (talk) 16:53, 31 October 2025 (UTC)[reply]

I propose to merge the content of Centering (Masonry) here. It appears to be a straight case of WP:CFORK where another article was created for a variation of the spelling of the term. The Centering (Masonry) article also appears to be AI-generated (as is the comment in the previous section). Викидим (talk) 21:39, 31 October 2025 (UTC)[reply]

Oppose because Centering (Masonry) is another AI slop article, so it needs cleanup (or just delete it) before it goes anywhere. Andy Dingley (talk) 21:46, 31 October 2025 (UTC)[reply]

For the avoidance of doubt, I am the one who placed {{AI-generated}} hatnote onto Centering (Masonry). I also agree with your cleanup suggestion (I think that merging can involve cleanup) and would support an WP:AfD if WP:User Somebody "Notme" Else initiates it. Викидим (talk) 21:52, 31 October 2025 (UTC)[reply]

Oppose — As a civil engineer, I believed there were valid grounds for emphasizing the engineering aspects of the subject. The earlier version leaned strongly toward an architectural perspective; none of my edits were intended as a slight to architects or to that tradition. In the spirit of collaboration, I’m fully open to whichever balance the consensus supports.

Regarding disclosure: when I drafted the Centering (Masonry) article, I was not yet aware of the community’s policy on limited use of large language models (LLMs). I have since reviewed WP:LLMPOLICY and added a policy-compliant disclosure describing the scope of assistance used in preparing that article. Cheers Risk Engineer (talk) 14:04, 1 November 2025 (UTC)[reply]