In brief
- A critical path built on assumed links, not site records, names the wrong delay driver and leaves the real one unmanaged.
- Ask for a one-page logic sheet that lists predecessors, lags and float for each task, and check the dates against daily site records.
- Walk the site weekly against the path and log weather-sensitive tasks explicitly, because unprotected masonry or concrete can absorb rain or heat risk that no logic sheet shows.
Contents
Weak supervision in critical path analysis in Berbera shows up when the programme is drawn from assumed links instead of site records. The path then names the wrong delay driver, and crews spend weeks chasing a task that was never critical. The error stays in place until the finishes are late.
Why does the path go wrong when nobody checks it?
A critical path is only as good as the logic under it. If no one tests the sequence against how work actually moves on site, the software still shows a path, but it is a guess. On some projects the logic treats procurement, curing and inspection as simple durations, when each one can drive the next trade. Confirm that against the project's own programme and records.
A supervisor who only reviews the bar chart misses that a lag of a few days on curing can push formwork striking into the next pour. If the logic assumes concrete gains strength while carpenters are ready, the path can hide a stall. The effect is silent: the programme dashboard stays green, then the blockwork start slips by a week.
Site supervision should check the path against three things: the actual sequence of trades, the hold points that must be signed before the next activity, and any weather allowance the programme carries. Check these by walking a recent job and comparing the as-built sequence with the approved logic. Ask the municipal engineer's office whether it holds records of similar approved programmes. Confirm any specific duration, lag or weather allowance against the project specification and the engineer's direction.
Which tasks get blamed for delays that are not theirs?
A misidentified delay driver is usually a visible task that is late, not the one that caused the lateness. A visible finishing trade can be named as the reason a handover slipped, while the real driver sits in an earlier inspection or a material release. The visible trade gets pressured, the hidden gate stays closed, and the path does not move. Confirm that against the project's own records.
Detection means tracing backward from the late activity to the predecessor that actually stopped. Ask for the daily site records for the week the delay started, then compare them with the programme's update. If the records show a pour waiting on a formwork sign-off, the sign-off is the driver, not the pour. A material release blocking a predecessor is one mechanism to trace from the site records rather than assuming where it sat.
Supervisors should keep a simple delay log that records date, activity, and the immediate blocker, not the person. Review it weekly against the path and mark any task where the blocker sits outside the named trade. For any duration, float or inspection interval, confirm the figure with the project specification and the engineer rather than applying a general rule. A site supervisor can also ask two suppliers for written delivery lead times to test the assumed lag.
How do you close the gap on a Berbera project?
The gap closes when one named person owns the path and tests it against site evidence every week. That person should not be the same person who only checks progress percentages. The role is to challenge the logic: ask why a link exists, what record supports the duration, and what happens if the predecessor slips.
A practical routine has three steps. First, request a one-page logic sheet that lists each task, its predecessors, its lags and its float. Second, compare that sheet with the last two weeks of site diaries and inspection records. Third, mark every task that is weather-sensitive, such as external blockwork, roof work and concrete curing, and state the protection planned for it. General practice is to keep weather-sensitive tasks in the path with an explicit allowance, but confirm the allowance against the specification and the engineer.
One more check: ask for test records for any activity whose duration depends on strength gain or compaction. If no records exist, the assumed duration is unverified, and the path rests on an assumption.
What to do next
Ask the site supervisor for the current logic sheet and the last two weeks of daily records, then compare the named critical task with what actually blocked work. Where the two do not match, write the correct predecessor into the programme and ask the engineer to confirm the change before the next update. Repeat the check weekly.
Frequently asked questions
Who should own critical path analysis on a Berbera site?
The contract should name one person, usually the project manager or a planner, who updates and tests the path. The site supervisor provides the daily evidence. Check the contract to see who is required to submit and update the programme.
Can a contractor refuse to share the logic behind the programme?
The contract may require submission of a programme with logic. Check what your contract allows and ask the engineer to confirm the submission requirement before work starts.
Local reporting: this article is written for building work in Berbera and Somaliland. Ground conditions, prices and rules differ between places; confirm the details for your own site.