What the data for this category looks like
Documents and materials for residential construction general contracting primarily originate from official documentation across the full project construction lifecycle. These include construction organization designs, subcontracts, change visas, completion acceptance reports, and more. Data updates align with project milestones. Construction organization design documents are generated in bulk after project startup, while change visas are submitted dynamically as on-site construction proceeds. Most documents follow industry-standard templates, containing fields such as section number, construction unit, operation date, and construction quantity. Units include square meters, cubic meters, ten thousand yuan, and others. Individual document lengths vary widely, ranging from several-page visa forms to dozens-of-page construction plans.
What constraints do these characteristics impose on the document parsing and chunking stage?
The characteristics of residential construction project documents create multiple constraints for the parsing and chunking stage. The wide range of individual document lengths means short documents like visa forms do not require over-fine chunking. Long documents like dozens-of-page construction plans need precise splitting to retain the context of professional fields. The fixed structure of industry-standard templates requires parsing to preserve the contextual association of key fields such as section number and construction quantity, preventing field breakage after chunking. Dynamically submitted change visa documents, if not isolated by session or project dimension, may result in repeated loading and parsing of historical documents. On-site visas often include many image attachments, so OCR parsing support is needed to extract text from images, preventing missing critical information due to unparsed images.
How to configure the settings
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Residential construction documents contain professional terminology and fixed fields. This range preserves complete context for individual construction quantity descriptions or visa content |
chunkSplitter | Split by paragraph + heading | Most residential construction documents use hierarchical headings and paragraph structures. Splitting this way preserves document logical hierarchy and avoids splitting professional content |
customPdfParse | Enabled | Residential construction PDF documents often include encrypted forms or scanned copies. Enabling custom parsing adapts to templated structures and improves field extraction accuracy |
UPLOAD_FILE_MAX_SIZE | 500 MB | Individual large construction organization design PDFs may exceed conventional limits. Adjusting this allows complete document uploads for parsing |
PARSE_FILE_TIMEOUT_SECONDS | 300–600 seconds | Long document parsing requires extended time. This range prevents parsing interruptions due to timeout |
chunkSettingMode | Manual configuration | Residential construction document structures vary widely. Manual configuration allows flexible adjustment of chunking rules to adapt to different document types |
Three common misconfigurations
- Issue: Historical project documents are loaded alongside the target document during parsing, resulting in irrelevant content mixed into chunking results. Cause: Project-level document isolation configuration is not enabled, and the system loads all knowledge base documents by default during parsing.
- Issue: Uploaded on-site visa image attachments cannot be parsed correctly, returning empty text or garbled content. Cause: The OCR parsing switch is not enabled, or Chinese-compatible OCR parameters are not configured, failing to recognize printed or handwritten text in images.
- Issue: Chunking results for a single PDF document include redundant content across documents, making precise single-document question matching impossible. Cause: Single-document parsing mode is not enabled, and cross-document context is incorrectly spliced during chunking.
How to confirm correct configuration
- Upload a single short document such as a visa form, check the parsed chunking results, and confirm each chunk contains complete visa content with no field breakage.
- Upload a single long document such as a construction organization design, check that parsing time falls within the configured timeout range, with no timeout errors.
- Upload an image attachment, confirm the parsed result contains text from the image with no garbled content or missing information.
- Switch to single-document question mode, enter a professional question targeted at the uploaded document, and confirm responses are based solely on content from the current uploaded document with no irrelevant document information included.
The values provided here are common starting points and should be measured against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.