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Can the tower be used at a 3.0 m platform height with a load within both stated load limits, and may it then be moved while the platform is empty of people but still carrying materials? | Mobile access tower T-3 operating limits: The platform is rated for a maximum uniformly distributed load of 1.0 kN/m² and a maximum total load of 2.7 kN. Both limits apply while the tower is stationary. For platform heights above 2.0 m and up to 3.5 m, all four outriggers must be fitted. Without outriggers, platform he... | It may be used at a 3.0 m platform height only with all four outriggers fitted, the castors locked, and the load within both the 1.0 kN/m² and 2.7 kN limits. It may not be moved while materials remain on the platform; the movement restriction applies when either a person or material is present. | The document requires all four outriggers for platform heights above 2.0 m and up to 3.5 m, requires castors to be locked before use, and prohibits moving the tower while any person or material is on the platform. It specifies both a 1.0 kN/m² distributed-load limit and a 2.7 kN total-load limit. | A 3.0 m platform height is within the stated height range only when all four outriggers are fitted. The load limits apply during stationary use and do not override the separate movement prohibition. An empty platform is not sufficient for movement if materials remain on it. |
With the 0.6 m side bracket fitted, may the platform carry a total load of 2.5 kN if the double ledger and bracket-node tie are installed? Why does the standard-bay rating not permit it? | Cantilever platform configuration note, Series C: The standard 2.0 m bay is rated for a maximum of 1.8 kN/m² and 4.3 kN total per platform level. When a 0.6 m side bracket is fitted, the applicable limits change to 1.0 kN/m² and 2.4 kN total per platform level. The bracket configuration is permitted only on a 2.0 m bay... | No. The bracketed configuration is limited to 2.4 kN total per platform level, so 2.5 kN exceeds its stated limit. Installing the required double ledger and bracket-node tie satisfies configuration requirements but does not increase the load rating. The 4.3 kN standard-bay limit does not apply when the side bracket is ... | The note states that with a 0.6 m side bracket, the limits are 1.0 kN/m² and 2.4 kN total per platform level; it also says the standard-bay rating does not apply while a side bracket is fitted. The bracket is permitted only on a 2.0 m bay with a double ledger and a tie at the bracket node. | Fitting the side bracket changes the applicable load limits; the higher standard-bay rating cannot be carried over to that configuration. The double ledger and bracket-node tie are prerequisites for the permitted bracket setup, not substitutes for its lower load limits. Stacked brackets are prohibited. |
A crew proposes placing 4.0 kN uniformly across one platform lift. Would that comply with the stated limits, and would the same total load comply if concentrated at a single point? | Frame Set M-24 design note: Each platform bay measures 2.0 m by 1.2 m. The maximum uniformly distributed load is 2.0 kN/m², and the total load on one platform lift must not exceed 4.8 kN. A concentrated load at any single point must not exceed 1.0 kN. These limits apply to one platform lift; a fully loaded lift must no... | The uniformly distributed 4.0 kN load complies with the stated limits: it is below the 4.8 kN total limit and, over the 2.4 m² bay, corresponds to about 1.67 kN/m², below the 2.0 kN/m² limit. Concentrating 4.0 kN at one point would not comply because the single-point limit is 1.0 kN. | The document sets a maximum uniformly distributed load of 2.0 kN/m², a total load limit of 4.8 kN per platform lift, and a maximum concentrated load of 1.0 kN at any single point. It gives the bay dimensions as 2.0 m by 1.2 m. | The uniformly distributed-load limit and the total-load limit both apply to the platform lift, so both must be respected. The separate 1.0 kN single-point limit rules out concentrating the proposed load at one location. The note also restricts storage on the lift immediately above when a lift is fully loaded. |
Scaffolding Design and Load Specification Document Understanding Benchmark
This benchmark focuses on web text covering scaffolding design guidance, load classifications, and configuration restrictions. Its questions test whether a model can interpret relationships among numerical conditions, applicable configurations, and limitations using the source text. Each record includes a source document, question, reference answer, supporting evidence, and a summary of constraint relationships, making it useful for evaluating document understanding and evidence-based responses rather than standalone numerical calculation.
Technical Specifications
| Field | Type | Description |
|---|---|---|
| question | string | A question about the source document, commonly addressing relationships among numerical conditions, applicable configurations, and restrictions. |
| source_document | string | Web text containing scaffolding design guidance, load classifications, or configuration restrictions used as the basis for answering. |
| reference_answer | string | An accurate answer to the evaluation question based on the source document. |
| supporting_evidence | string | A quotation from the source document or a relevant passage reference supporting the answer. |
| constraint_relationship_summary | string | A summary of how relevant numerical conditions, applicable configurations, and restrictions relate, including their scope or cases where they do not apply. |
Compliance Statement
| Authorization Type | CC-BY-NC-SA 4.0 (Attribution–NonCommercial–ShareAlike) |
| Commercial Use | Requires exclusive subscription or authorization contract (monthly or per-invocation charging) |
| Privacy and Anonymization | No PII, no real company names, simulated scenarios follow industry standards |
| Compliance System | Compliant with China's Data Security Law / EU GDPR / supports enterprise data access logs |
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