Here is how a typical engineer uses the software:
Step 1: Project Setup – Define units (Imperial or Metric), global temperature range, and design code (NESC, IEC, etc.).
Step 2: Conductor Selection – Choose primary conductor and overhead shield wire from library, or import new. O-calc Pro Line Design
Step 3: Span Data Entry – Manually enter each span length and elevation difference, or import a structure list. The software calculates the ruling span.
Step 4: Stringing Conditions – Set stringing temperature (often 60°F) and desired initial tension (e.g., 20% RBS). O-calc Pro back-calculates the required sag and slack. Here is how a typical engineer uses the
Step 5: Run Analysis – The software computes sag and tension for all loading cases: everyday temperatures, maximum operating temperature, ice+wind, and broken conductor scenarios.
Step 6: Evaluate Results – Check clearance heat maps and tension graphs. If any case exceeds limits, adjust structure heights, span lengths, or reduce tension. The software calculates the ruling span
Step 7: Generate Reports – Export sag-tension tables, stringing charts, and clearance diagrams to PDF or Excel for construction crews and regulatory filing.
A standout feature is Auto-Spotting—given a terrain file and a set of candidate pole heights, the software calculates optimal locations to maintain ground clearance. This reduces the number of structures needed, saving capital costs. Conversely, it can also site additional poles where forced clearance is insufficient.
The typical design process in the software follows these steps: