Infradigital Highway Toolkit Hub
Browse our complete catalog of professional civil engineering calculators, formatters, and design script generators. Fully compliant with Ethiopian Road Standards (ERA/AACRA) and AASHTO guidelines.
Folder Structure Generator
Generate compliant drawing submission folder structures without skipped numbers.
Horizontal Alignment Formatter
Transform raw Civil 3D alignment exports into PC -> PI -> PT formatted tables.
Vertical Alignment Formatter
Clean and format Civil 3D profile outputs, validate grades, and remove blank lines.
Superelevation Calculator
Recalculate superelevation transition stations (e.g. Normal Crown -> Full Super).
Survey CSV Cleaner (PENZD)
Clean, validate, and merge multiple Civil 3D survey exports into a single import-ready PENZD file.
Excel Quantity Takeoff & QC
Column mapper and statistical compilation tool for earthwork reports with QC indicators.
BoQ Tool
Generate a hierarchical Bill of Quantities (BoQ) mapping design quantities to ERA 2013 standard technical specifications.
Mass Haul Diagram Plotter
Plot standard mass haul curves, identify balance points, and optimize haul distances.
Structure Plan & Profile Gen
Generate plan and profile drawings for crossing structures using alignment and profile data.
ERA Pavement Design & Overlay Calc
Calculate flexible pavement layer structures (T1-T8/S1-S6), ESAL traffic growth, and structural overlay thicknesses strictly adhering to ERA 2013 manuals.
Culvert & Ditch Hydraulic Sizer
Calculate peak runoff discharge (Q=C·I·A/360) and size pipe/box culverts and trapezoidal roadside ditches per ERA Drainage Design Manual 2013.
Stopping & Passing Sight Distance Calc
Determine required SSD, PSD, vertical curve K-values (Crest/Sag), and horizontal curve setback clearances (m_s) per ERA Geometric Design Manual 2013.
Expansive Soil & Stabilization Sizer
Classify AASHTO soil groups (A-1 to A-7-6), evaluate Black Cotton Soil swelling threat, and calculate undercut, capping, and lime/cement stabilization dosages per ERA 2013.
Pavement Material Substitution Calc
Calculate structural layer equivalencies (SN), solve required layer substitution thicknesses (D_sub), and evaluate cost impact per ERA Pavement Manual 2013.
Roadside Guardrail & Safety Barrier Evaluator
Evaluate embankment fill/slope warrants, calculate Clear Zone recovery distance (L_CZ), select W-Beam/Thrie-Beam/New Jersey barriers, and compute Length of Need (L_N) per ERA Chapter 10.
ERA Rigid Concrete Pavement & Joint Calculator
Calculate JPCP and CRCP slab thickness, effective subgrade reaction (k_eff), transverse dowels & longitudinal tie-bars per ERA Pavement Design Manual Vol II 2013.
Junction & Roundabout Geometry Checker
Evaluate roundabout ICD, entry radius, circulatory width, truck apron sizing, design vehicle swept paths (DV1-DV4/WB-15), and sight triangles per ERA Chapter 9.
Road Signs & Markings Quantity Estimator
Calculate thermoplastic paint area (m²), paint/glass bead weights (kg), retroreflective traffic signs schedule, cat-eye studs, and delineators per ERA Chapter 11.
Civil 3D LandXML Centerline & Station Equation Formatter
Import Civil 3D LandXML alignments with station equations, recalculate clean stationing & coordinates (N, E), spread into 1km horizontal side-by-side blocks, and export print-ready reports & Excel spreadsheets.
Frequently Asked Questions
Detailed guide and support for horizontal and vertical curve formatters.