Listen for gurgling sounds in nearby drains if the toilet continues to flush slowly. These sounds, if you hear them, mean that there isn't enough air in the waste lines to allow water to flow freely. Go on the roof and clear debris from the vent opening. Once the opening is clear, spray water into it with a garden hose.
The Kimball Lifecycle. The Kimball Lifecycle is a methodology for developing data warehouses, and has been developed over many years by Ralph Kimball and a variety of colleagues.
The premise is that any steps that do not add value are most likely waste that is preventing âflow.â Value Stream Mapping and Value Adding Analysis are two techniques used to remove non-value added activities from a process in order to achieve perfection.