Scheduling & forensic delay analysis

Win any dispute, with the numbers behind you.

Constroma is the workspace where contractors and owners turn schedule data into rigorous Time Impact Analyses, fragnets, and EOT claims — in days, not months.

Free P6 reader No P6 licence needed Cancel anytime
Window 7 · Delay analysis
+12d Compensable+3d Concurrent

Marina Heights · Foundation Delay

Mar '25Apr '25May '25Jun '25
Data date
Mobilisation
Site excavation
Foundations
Superstructure
MEP rough-in
Planned baselineActual / forecastSlippage

Trusted by contractors and consultants worldwide

BuildcoMeridianArrowayNorth&Co.Pile GroupKenworthVesta
The product

Build the schedule. Defend the schedule.

No incumbent does both. P6 and Asta author but can't analyse delay. SmartPM and Nodes & Links analyse but can't author. Constroma owns the full lifecycle.

Author

A modern CPM scheduling tool that reads, computes, and builds construction schedules with the rigour planners trust from P6 — without the weight, the licensing, or the dated interface.

  • Open any XER free — no P6 licence
  • A CPM engine that matches P6 exactly
  • DCMA-clean baselines in hours, not days

Defend

A forensic delay-analysis suite that turns those schedules into defensible, methodology-grounded narratives — aligned to AACE 29R-03, the SCL Protocol, and FIDIC.

  • Time Impact Analysis with fragnet insertion
  • Windows analysis with responsibility split
  • EOT claim & rebuttal packages, traceable
Features

Everything from a free reader to a tribunal-ready claim

Free XER reader

Open, render and explore any P6 schedule — Gantt, WBS, logic, calendars, float — in your browser, on any device.

Free

Schedule comparison

See exactly what changed between two updates — added, removed, and the logic that was quietly re-wired.

Free

CPM engine

Recompute any schedule from scratch — forward/backward pass, float, critical path — matching P6 exactly.

Free

BOQ & resource loading

Map the bill of quantities and a coded resource dictionary to activities for cost- and resource-loaded curves.

Low-tier

Smart Baseline

Full DCMA 14-point assessment with guided, reversible fixes — a baseline that survives a claim.

Forensic suite

IAP, TIA, Windows, As-Planned vs As-Built, Collapsed As-Built — with an AI layer that drafts the narrative.

Recognised methods

Grounded in the standards tribunals respect

Every analysis is reproducible and auditable — aligned to AACE 29R-03, the SCL Delay & Disruption Protocol, and FIDIC.

Impacted As-Planned
Time Impact Analysis
Windows analysis
As-Planned vs As-Built
Collapsed As-Built
Concurrency analysis
29R-03 reconstruction

Start free. Pay when it pays you.

Read, compare and recompute schedules for free, forever. Pay only for the baseline and forensic work that wins the claim.