40 · Progress Tracking & Documentation
Before / After Progress Documentation
Description
the evidence system's Compare tool allows users to select two images from the same camera at different dates and display them side-by-side or as a slider overlay — the primary mechanism for before/after progress comparison.
Trigger
Site manager/PM/client/engineer needs to demonstrate change in site conditions between two dates — to show progress, evidence disputed scope, document an RFI-relevant condition change, or prepare a stakeholder presentation.
Activity
Using the evidence system's Compare tool to select and present two timestamped images from the same camera at different dates.
Conclusion
Before/after comparison produced, reviewed, and used for its intended purpose. Comparison screenshot archived in project record.
Role detail
the evidence system's Compare tool allows users to select two images from the same camera at different dates and display them side-by-side or as a slider overlay — the primary mechanism for before/after progress comparison.
Steps (9)
- 1Need for before/after comparison identified — for a meeting, a report, a dispute, or an RFI.
- 2User accesses the evidence system platform and navigates to relevant project/camera.
- 3Compare tool opened and first reference date selected.
- 4Specific image from archive for that date selected.
- 5Second date selected.
- 6Compare tool displays images in side-by-side or slider overlay format.
- 7Comparison reviewed for intended purpose.
- 8Comparison exported as screenshot or shared via link.
- 9Comparison output archived in project document management system.
Evidence (3)
“I use the Compare tool every single week for the client report. I pick the same camera position, the same approximate time of day, and I compare this week to the same week last month. It takes two minutes and it's the most powerful page in the whole report — clients can see exactly what's been built.”
Anonymized evidence record 40.1
“Visual progress documentation is a contractual requirement on most construction contracts — owners and clients require regular demonstration that the programme is being maintained and that work-in-progress corresponds to payment applications. The Compare tool transforms this from a manual photography and editing task into a one-minute platform operation.”
Anonymized evidence record 40.2
“Before/after visual evidence is a standard component of construction dispute packages — used in adjudication, arbitration, and expert witness reports to demonstrate the state of the works at a specific point in time. the evidence system's timestamped archive provides an independently verifiable record that is difficult to challenge.”
Anonymized evidence record 40.3
ROI model — Template B
Evercam eliminates manual effort for recurring content production (progress photos, time-lapse, marketing videos). The baseline cost is the manual time per deliverable × frequency.
saving = manual_hours_per_deliverable × deliverables_per_month × project_duration_months × hourly_rate × evercam_reduction_pct
Notes
Originally catalogued as "Compare Tool — Before/After Documentation" (catalogue #40). Reclassified: the original entry conflated the the evidence system Compare product feature with the underlying workflow, which is generic progress documentation. The workflow is the need; the Compare tool is one means of meeting it.