Concurrent Delay: muti shipment materials, what if the start was delay 30 days in the start, most shipments came in as needed first 50 days AS NEEDED for 100 days of construction, then the last shipments were delayed 20 days (due to failed qa/qc testing) on day 90 - and yes on the critical path. Do you get 240 Days of Concurrent Delay (yes other delays) or do you only get 40? Can the owner compel the contractor to keep it 1 activity which makes it look worse? If 1 bar, really is that long.
Under all of the delay analysis protocols each delay event needs to be analysed separately. If the event caused a delay to completion an EOT is warranted. In the scenario described, any later claim has to allow for any previously approved (or claimed) EOT.
This situation is a good example of a scenario where ‘time windows’ are a useful approach. The actual situation at the start of each time window is the baseline, and delay at the end of the window attributable to a claimable event is the EOT claim.
For more on this see: https://mosaicprojects.com.au/PMKI-ITC-020.php