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Record W3103651076 · doi:10.1061/9780784482889.052

A Comparative Study of Offsite Construction Manufacturing Techniques

2020· article· en· W3103651076 on OpenAlexaff
Chelsea Ritter, Béda Barkokébas, Youyi Zhang, Mohamed Al‐Hussein

Bibliographic record

VenueConstruction Research Congress 2020 · 2020
Typearticle
Languageen
FieldEngineering
TopicBIM and Construction Integration
Canadian institutionsUniversity of Alberta
Fundersnot available
KeywordsProcess (computing)Construction industryFactory (object-oriented programming)AutomationVariance (accounting)Risk analysis (engineering)Manufacturing engineeringEngineeringConstruction engineeringComputer scienceBusiness

Abstract

fetched live from OpenAlex

Offsite manufacturers are commonly competing with each other, as well as with conventional construction companies for projects. The construction industry is interested in knowing how the performance of the manufacturers compares to traditional onsite constructed projects in terms of time, safety, waste, and cost. While this comparison is important for the industry; limited information is available to make this comparison since the vast difference in the methods makes detailed comparisons time consuming and the same project is rarely built with both methods, so different projects must be compared. Each manufacturer carries out their construction process differently, employing varying levels of planning, automation, and manufacturing principles. While some manufacturers are operating almost as conventional builders in a factory, others have leveraged the opportunities available through offsite construction to create a more predictable and productive process. Because of this diversity, there is a significant variance in the cost, time, safety, and waste measurements between offsite manufacturers. This variance necessitates the comparison between the varying approaches for offsite construction first. This paper details some of the methods used for floor panel construction in offsite construction using two case studies and begins to compare them based on cost and time.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.006
metaresearch head score (Gemma)0.014
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.009
Threshold uncertainty score0.030

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0060.014
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0070.007
Science and technology studies0.0020.002
Scholarly communication0.0030.002
Open science0.0020.003
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0090.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.056
GPT teacher head0.331
Teacher spread0.275 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations4
Published2020
Admission routes1
Has abstractyes

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