Free Engineering Tools

OSP Engineering Calculators, Built by Engineers Who Use Them

Our free tools are built by the engineers who use them. Calculators and charts need no signup; downloadable templates ask for a name and email. Use them to organize project information and support preliminary engineering checks.

FTTH / PON Design

PON Power Budget Calculator

Check a GPON or XGS-PON link against ITU-T class budgets: splitter ratio, fiber length, connectors and splices, design margin, with a pass/fail verdict, receiver-overload check, and maximum reach. Shareable result links for design reviews.

Open the calculator →
Pole Loading / Make-Ready

Pole Loading Pre-Check Calculator

NESC Rule 250B screening for a proposed fiber attachment: district wind and ice loads versus wood pole capacity by class and species. A first-pass utilization estimate before you order the stamped pole loading analysis.

Open the calculator →
Pole Reference

Utility Pole Reference Charts

Look up minimum wood pole dimensions, setting depths and horizontal class loads by species group, class and length.

Open the charts →
Fiber Reference

Fiber Color Code Chart

Match a fiber number to its tube and color, then carry its strand identity into the splice record.

View Chart →
Free Template

Traffic Control Plan Template

Organize roadway evidence, work activity, permit conditions and review records in a free, fillable PDF for traffic control planning.

Get the Template →
Free Checklist

Utility Pole Inspection Checklist

Record pole observations, groundline findings and measured clearances in a free, fillable checklist with space for photographs and review notes.

Get the Checklist →

These tools produce screening-level engineering estimates and are not a substitute for a stamped analysis or a construction-ready design. When a project needs the real thing, that's our day job: pole loading analysis ($45 to $75 per pole), FTTH design, and fiber network design from an in-house team of 600+ engineers. Active in 24 states. Available across all 50 U.S. states. Questions or a tool you'd like to see next? info@draftech.com