pdf-construction

PDF Processing for Construction

Overview

Adapted from Anthropic's PDF skill for construction document workflows.

Construction Use Cases

1. RFI Processing

Extract structured data from Request for Information documents.

from pypdf import PdfReader
import re

def extract_rfi_data(pdf_path: str) -> dict:
    """Extract RFI fields from PDF."""
    reader = PdfReader(pdf_path)
    text = ""
    for page in reader.pages:
        text += page.extract_text()

    # Parse common RFI fields
    rfi_data = {
        'rfi_number': re.search(r'RFI\s*#?\s*(\d+)', text),
        'subject': re.search(r'Subject:?\s*(.+?)(?:\n|$)', text),
        'from': re.search(r'From:?\s*(.+?)(?:\n|$)', text),
        'to': re.search(r'To:?\s*(.+?)(?:\n|$)', text),
        'date': re.search(r'Date:?\s*(\d{1,2}[/-]\d{1,2}[/-]\d{2,4})', text),
        'spec_section': re.search(r'Spec(?:ification)?\s*Section:?\s*(.+?)(?:\n|$)', text),
        'drawing_ref': re.search(r'Drawing\s*(?:Ref)?:?\s*(.+?)(?:\n|$)', text),
    }

    return {k: v.group(1) if v else None for k, v in rfi_data.items()}

2. Submittal Package Creation

Merge multiple PDFs into organized submittal packages.

from pypdf import PdfWriter, PdfReader
from pathlib import Path

def create_submittal_package(
    cover_sheet: str,
    product_data: list,
    shop_drawings: list,
    output_path: str
) -> str:
    """Create organized submittal package."""
    writer = PdfWriter()

    # Add cover sheet
    writer.append(cover_sheet)

    # Add bookmarked sections
    page_num = len(PdfReader(cover_sheet).pages)

    # Product Data section
    writer.add_outline_item("Product Data", page_num)
    for pdf in product_data:
        writer.append(pdf)
        page_num += len(PdfReader(pdf).pages)

    # Shop Drawings section
    writer.add_outline_item("Shop Drawings", page_num)
    for pdf in shop_drawings:
        writer.append(pdf)
        page_num += len(PdfReader(pdf).pages)

    with open(output_path, "wb") as output:
        writer.write(output)

    return output_path