SupplyGrid · Glossary Definition

Rough Cut Capacity Planning

Rough-Cut Capacity Planning (RCCP) is a high-level, long-term capacity check used in manufacturing to verify whether key resources—such as work centers, production lines, labor groups, warehouse space, or supplier capacity—can support the Master Production Schedule (MPS). It compares required capacity against available capacity using aggregated planning data, expressed in hours or units per week, before detailed scheduling begins.

Rough-Cut Capacity Planning typically appears during sales and operations planning or master scheduling, where a planner converts the Master Production Schedule into load on critical resources using planning routings, bills of resources, or product-family averages. That load is compared with available capacity over a horizon spanning weeks to months. On the shop floor, this early-warning layer lets operations decide whether to add shifts, move work to alternate lines, outsource, or level-load before shortages hit execution. In warehousing and material flow, the same check can expose whether planned output will overrun warehouse space, receiving throughput, or supplier capacity—especially when staging space or raw-material flow, not machine time, is the real bottleneck. The practical value is that RCCP highlights resource overloads early, giving production control, procurement, and logistics time to adjust plans and avoid WIP congestion and late orders.

Operational Failure Matrix
Risk LevelOperational Pitfall Description
⚠️ Warning 1Overstated feasibility from coarse routings: Product-family averages or representative routings understate setup time, labor variability, or changeover loss, so RCCP signals feasibility even though the line cannot keep pace, forcing late orders and expediting.
⚠️ Warning 2Load miscalculation from ignored inventory: Some RCCP methods load only open independent demand, ignoring existing inventory, released work orders, and purchase-order timing, so the plan appears overloaded or underloaded relative to actual floor activity.
⚠️ Warning 3Bottleneck blind spot: Running RCCP only against machines misses constraints such as warehouse space, supplier lead time, or assembly labor, allowing the plan to pass capacity checks while failing at receiving, staging, or component availability.
Technical FAQs
How does RCCP differ from detailed capacity requirements planning?

RCCP is aggregate and early-stage; it validates the feasibility of the Master Production Schedule against key resources before detailed routing, sequencing, and dispatching take place.

What inputs are usually required for RCCP?

Common inputs include the Master Production Schedule or demand plan, a bill of resources or planning routings, and available capacity by resource, line, or work center.

What does an RCCP overload signal mean operationally?

It means the current plan cannot be executed without a change such as rescheduling, adding capacity, outsourcing, or smoothing demand.

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