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Eight-activity project with an owner delay, an overlapping contractor delay and severe weather: impacted as-planned, time-impact windows, collapsed as-built, literal and functional concurrency, and the DCAA manual's Eichleay example

ToolDelay and Claims Analysis
SourceDefense Contract Audit Agency (2026). DCAA Contract Audit Manual, Chapter 12: Auditing Contract Termination, Delay/Disruption, and Other Requests for Equitable Adjustment or Claims. DCAAM 7640.1, 23 February 2026, sections 12-804.1 (the three Eichleay steps), 12-804.4 (delay days) and 12-804.5 (the worked example); Armed Services Board of Contract Appeals (1960). Eichleay Corporation. ASBCA No. 5183, 60-2 BCA ΒΆ 2688; United States Court of Appeals for the Federal Circuit (1994). Wickham Contracting Co., Inc. v. Fischer. 12 F.3d 1574.
LevelProfessional

Problem

A building project of eight activities (mobilize 5, excavation 10, foundations 15, structural steel 20, underground utilities 12, roofing 10, mechanical and electrical 18, finishes 12 working days, finish-to-start) is delayed by a differing site condition on the foundations (owner, 8 days from day 20), a formwork crew pulled off the same activity (contractor, 5 days from day 24) and unusually severe weather on the steel (neither party, 4 days from day 50); the as-built working durations of B, C, D, F and G were 11, 15, 21, 10 and 20 days. Attribute the extension of the completion to each event by the impacted as-planned method, by time-impact windows and by the collapsed as-built method, count the concurrent days by the literal and functional tests, state the entitlement in days, and price the DCAA manual's Eichleay example (contract billings $598,400 of $1,397,000 total over two years, fixed overhead $110,000 a year, 730 days performed, 365 delay days).

Inputs to Enter

  • Activities A-H as listed (critical path A-B-C-D-G-H, 80 working days); delay events D1 C 8 days from day 20 owner, D2 C 5 days from day 24 contractor, D3 D 4 days from day 50 neither; as-built working durations B 11, C 15, D 21, F 10, G 20; functional-test period 30 days; weather check Feb 9/7, Mar 9/13 anticipated/actual days
  • Damages: LD rate 1,850 per day, 1 non-excusable day, 365 compensable days; Eichleay contract billings 598,400, total billings 1,397,000, fixed overhead 220,000, 730 days performed; field overhead 850 per day; bid cost 4,120,000 + 60,000, actual cost 4,650,000 - 90,000; acceleration 1,200 h x 22.50, 850 per day x 12 days, 15 percent of 180,000; measured mile from the pasted 24-day record, 2,500 units impacted at 45 per hour
  • Index adjustment 1,000,000 contract price, 600,000 adjustable, index 100 to 112.5, threshold 3 percent, cap 10 percent; CDA interest on 250,000 from 2024-03-15 to 2025-09-30 at 4.875 / 5.125 / 4.625 / 4.375 percent per half year (illustrative rates); notice dates 2024-04-10 delay, 2024-04-18 notice, 2024-09-02 claim, 2024-10-25 decision, completion 2024-12-31 required, 2025-01-15 actual
Open the Delay and Claims Analysis tool (loaded with this example)

Answers

  • Impacted as-planned: D1 +8, D2 +1 (four of its five days fell while the owner's delay had already stopped the foundations), D3 +4; completion 93 = 80 + 13; alone 8 / 5 / 4, reverse order 3 / 1 / 4 (completion 88): the insertion order matters for overlapping events
  • Literal concurrency 4 days (days 24-27), functional 5 days (lesser of 8 and 5 in the first 30-day period); entitlement under the literal test 4 compensable, 4 concurrent, 4 excusable non-compensable, 1 non-excusable (3 / 5 / 4 / 1 under the functional test); time extension 12 days, liquidated damages 1 day
  • Time-impact windows with the as-built durations: completion 97 (8 days of events in window 1 after a 1-day progress update, 1 in window 2, 4 in window 3, 3 days of closing progress); collapsed as-built 97: owner collapse 4, contractor 1, neither 4, all excusable 8, as-built performance 4 days above the plan
  • Eichleay: ratio 598,400 / 1,397,000 = 0.4283 (43 percent as the manual rounds), allocable overhead 94,236 (94,600), daily rate 129.09 (130), unabsorbed overhead 47,118 exact and 47,450 with the manual's rounding (the printed answer)
  • Measured mile 0.798 vs 0.545 units per hour, 1,453 lost hours, 31.7 percent inefficiency, 65,368; index adjustment 75,000 capped at 60,000 (price 1,060,000); CDA interest 18,525.68 over 564 days; notice 8 days (within 10), assertion 137 days (outside 30), decision 53 days (within 60), 15 calendar days late

Notes

The tool's default inputs are this case; press Submit. The project, the as-built durations, the damages figures other than the Eichleay example and the Treasury rates are illustrative and said so on the page; the Eichleay arithmetic reproduces DCAA CAM 12-804.5 to the printed digits with the manual's rounding rule (ratio to a whole percent, daily rate to a whole dollar) and the 12-805.4 XYZ Construction example in the test. Every schedule number is reproduced by test_delay_claims_analysis.php (702 checks) against an independent Python implementation of the fragnet model in References/Delay-Claims/checks/.