Gambrel Roof Calculator & Construction Guide – Angles, Rafter Length, Height

Gambrel Roof Calculator

Gambrel Roof Features

  • Symmetrical two-sided roof with two slopes on each side
  • Lower slope is steeper than upper slope (typically 8:12 and 4:12)
  • Provides extra headroom in attic space
  • Commonly used for barns, sheds, and Dutch colonial homes

About Our Construction Tools

SUC

Construction & Engineering Tools Team at Smart Unit Calculator

Our team of construction specialists and engineers develops and maintains these practical calculation tools for contractors, builders, architects, DIY enthusiasts, and construction professionals.

Job-Site Accuracy

All construction calculations use industry-standard formulas and building codes to ensure accurate, reliable results for real-world construction projects.

Practical Construction Units

Convert between feet/meters, square/cubic measurements, weight/load units, material quantities, and construction-specific calculations—everything builders and contractors need.

Industry Standard Calculations

These construction tools are developed using established building codes, engineering standards, and industry-accepted formulas for reliable results in residential and commercial projects.

Construction Safety Disclaimer

These construction calculation tools are for informational, educational, and planning purposes only. They should not replace professional engineering analysis, building code compliance verification, or on-site safety protocols. Always consult licensed professionals for structural and safety-critical projects.

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