Why This Seriously Affects Efficiency
A wet spraying machine is the centerpiece of a complex, interconnected system. If any part of that system fails, the entire operation grinds to a halt.
High Capital Cost Sitting Idle: These machines are expensive to purchase or rent. Every minute they are not spraying is a direct waste of that investment.
Labor Costs: The spraying crew (nozzleman, operator, helpers) is highly skilled and paid accordingly. They must be paid whether they are working or waiting.
Project Schedule Delays: Spraying is often on the critical path of a project. Delays here ripple through the entire schedule, causing missed milestones and potential liquidated damages.
Start-Stop Issues: Interruptions can lead to poor adhesion between layers (cold joints), requiring additional surface preparation and potentially compromising the quality and integrity of the shotcrete layer.
Mixing Plant Inefficiency: The batching plant operates in a stop-start manner, which is inefficient and can lead to material waste (e.g., setting of leftover concrete in truck mixers).
