Common causes of delay on a steel package
The same handful of items account for most lost time, and nearly all of them are decided before erection starts.
Steel packages tend to slip for predictable reasons. None of them is exotic, and most are visible weeks in advance.
Drawing approval turnaround
Fabrication cannot begin until shop drawings are approved. When approval takes three weeks instead of one, the whole package moves. Agree the turnaround in advance and track it as a programme item with a name against it.
Late design change
A change after fabrication has started means rework, and rework in the shop is faster and cheaper than on site. Freezing the design at the right moment costs far less than any of the alternatives.
Foundations not ready
Concrete not cured, bolts out of position, levels not surveyed. Steel arrives and waits. This is the most common single cause and the most avoidable.
Access and crane positions
Another trade occupying the standing position, a haul route blocked, or ground that will not take outrigger loads. All discoverable in advance by walking the route with the lift plan in hand.
Delivery sequence
Steel delivered in the wrong order means rehandling every piece. Where lay-down space is tight, sequence matters more than the delivery date.
Weather and heat
Wind stops lifting. Summer working restrictions shorten the productive day. Both are predictable and belong in the programme rather than in the excuses.
Inspection hold points
If NDT or a survey is required before the next stage, the inspector's availability is on the critical path. Book it against the programme, not when the work is ready.