📏 Use the Tile Sizing Calculator to estimate the optimal tile size for your mainline. Follow these steps:

1. 📍 Measure the Drainage Area:
   • In Geo-Surface Designer, use the measuring tool to accurately determine the area being drained.
   • Enter this value into the first input box.
2. 📉 Enter the Average Grade:

• • Locate the info box for your main tile line (the line leading to the outlet) to find the average grade.
  • Input this grade value into the second input box.

⚙️ How It Works:
Based on the area and average grade provided, the calculator will generate several suggested tile sizes to achieve your desired drainage coefficient (DC).

🛠️ Best Practice Guidelines:

• 🌾 Pattern Tile Installations:
  For most soils, a typical DC for pattern tile ranges between 1/4″ and 1/2″.
• 🌊 Targeted Tile Installations:
  • When installing targeted tile (e.g., running a tile through depressional areas), consider selecting a higher DC or adjust by increasing the drainage area value to account for additional contributing acres.
  • For systems combining areas of pattern tile with targeted tile (all feeding into a mainline), measure both the pattern tiled area and a portion of the surrounding areas draining into the depressional zones. Use this combined area to compute a realistic estimate of the total acres being drained, and then select the highest DC permissible for licensing your system.

⚠️ Important Disclaimer:

🔹 Many regions impose maximum allowable drainage coefficients (DC) for licensing purposes. The concept of measuring contributing areas and selecting a higher DC may not be approved in every jurisdiction.

🔹 This tool is for informational and educational purposes only. It is not a substitute for professional advice.

🔹 The developer assumes no liability for any decisions, errors, or consequences arising from its use. Always consult with a licensed professional and verify local regulations before finalizing any drainage system design.