Built on AACE Recommended Practices

Walk into 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.

7-day free trialCancel anytime
Window 7 · Delay Analysis
Marina Heights · Foundation Delay
+12d Compensable+3d Concurrent
Mar’25
Apr’25
May’25
Jun’25
Mobilisation
Site Excavation
Foundations
Superstructure
MEP Rough-in
Data Date
Planned baselineActual / forecastSlippage
Trusted by contractors and consultants worldwide
Buildco
Meridian
Arroway
North&Co.
Pile Group
Kenworth
Vesta
The product

Everything a delay analyst actually needs

Constroma replaces the patchwork of P6 exports, Excel logs, and Word narratives with one rigorous workspace.

Fragnet builder
Model delay events as fragnets that plug into your schedules. Predecessors, successors, lag, the works.
Delay Analysis Methods
Run Retrospective Time Impact Analysis (MIP 3.7) as per the AACE Recommended Practices.
Claim workspace
All Your Schedules, Delay Events, Delay Fragnet, XER Files, and analysis tables in one place — ready to submit.
Schedule Reader
View project schedules directly from the platform — no need to import and export.
Export Results
Export the delay analysis results including XER files and Excel sheets.
Learning Section
Know what you do — from Constroma Learning and much more.
How it works

From schedule to claim, in three moves

STEP 01
Import your schedule
Drop in a P6 XER, MS Project XML, or our Excel template. Constroma reads activities, logic, calendars, and baselines.
STEP 02
Model the delay event
Build a fragnet, define cause and effect, attach evidence. We handle predecessor logic and lag for you.
STEP 03
Run the Analysis
Run the Time Impact Analysis, review the results, export the reports and the schedules.
Methodology

Built around the protocols expert witnesses recognise

Every analysis in Constroma maps directly to the AACE Recommended Practices and the SCL Delay & Disruption Protocol — so your claim survives scrutiny.

AACE RP 29R-03AACE RP 52R-06
52RP
Time Impact Analysis
Prospective, fragnet-based — suitable for variations or single events.
MIP 3.7
Retrospective TIA
Retrospective, contemporaneous-period — strongest evidentiary basis.
MIP 3.6
Impacted As-Planned
Where as-built data is incomplete. Lower defensibility, faster to run.
AACE
Concurrent Delay
Apportionment under the most usable recommended practices and protocols.
Constroma Academy

Free training for the construction community

Project management, project controls, scheduling, EOT claims — taught by practitioners, open to everyone.

Browse the full library
Foundations
Project Controls 101
A 6-part series covering schedules, baselines, EVM and reporting cadence.
12 lessons · 3 hrs
Masterclass
Anatomy of an EOT claim
Walkthrough of a real Marina-Heights style claim, narrated by a delay expert.
Video · 48 min
Reference
SCL Protocol explained
Plain-language guide to the 22 core principles every analyst should know.
Read · 22 min
Workshop
Building your first fragnet
Live screencast in Constroma — from XER import to defensible exhibit.
Video · 26 min
Pricing

Plans that scale with the size of the dispute

7-day free trial on every plan. No credit card required.

Starter
$99
/user/mo
For solo analysts and small claim teams just getting started.
  • 1 project
  • Up to 3 active claims
  • MIP 3.7
  • Email support
  • 1 GB storage
  • 100 MB max file size
Most popular
Team
$199
/user/mo
For contractors and consultants running multiple windows in parallel.
  • Unlimited claims & projects
  • Current and future methods
  • 20 GB storage
  • Priority support
  • 1 GB max file size
Enterprise
Custom
For owners, programme managers and expert-witness firms.
  • Everything in Team
  • Audit log & data residency
  • Custom report templates
  • Dedicated CSM
  • On-site training

Frequently Asked Questions

What is construction delay analysis?

Construction delay analysis is the forensic process of determining the causes, effects, and responsibility for schedule delays on a construction project. It involves comparing planned schedules against actual progress using recognised methodologies like Time Impact Analysis (TIA) and Windows Analysis to produce defensible, audit-ready reports for dispute resolution.

What delay analysis methods does Constroma support?

Constroma supports Time Impact Analysis (TIA) per AACE RP 29R-03, Retrospective TIA using the MIP 3.7 (Windows) methodology, Impacted As-Planned analysis, and concurrent delay identification. All methods align with AACE International Recommended Practices and the SCL Delay & Disruption Protocol.

Can Constroma import Primavera P6 XER files?

Yes. Constroma natively imports and exports Oracle Primavera P6 XER files with full CPM calculation, including calendar parsing, relationship types (FS, FF, SS, SF), lag, constraints, and activity codes. The built-in CPM engine recalculates forward and backward passes identically to P6.

How does Constroma compare to manual delay analysis?

Traditional delay analysis requires weeks of manual work — comparing schedules side by side, tracing critical path shifts, and documenting each delay event in spreadsheets. Constroma reduces this to hours by automating the entire TIA workflow: upload XER files, define delay events as fragnets, and the platform runs analysis across every window automatically.

Is Constroma suitable for arbitration and adjudication?

Yes. Every analysis in Constroma is fully traceable and auditable. The platform produces delay analysis reports that map directly to AACE RP 29R-03 and the SCL Protocol, making them defensible in arbitration, adjudication, and litigation proceedings.