Problem Diagnosis
Incorrect Fall
Fall is the change in elevation along a defined direction. An incorrect fall can include a reversal, an insufficient gradient or a gradient that differs from the design.
Plan the surface handover
BeforeIdentify the start and end points, distance and elevation reference.
Work stageCalculate the actual change in level and compare it with the required profile before moving material.
AfterMeasure the corrected profile independently.
What to verify
Check intermediate points because correct end levels can still hide a local dip.
Diagnosis should distinguish the visible symptom from its cause. Record whether the fault appeared after traffic, a water event, settlement or earlier earthworks. That history helps decide whether the response is a local surface correction, a drainage intervention or a more substantial investigation.
Scope and limits
There is no universal drainage fall appropriate to every project.
Continue the job brief
Include the location, existing condition, intended surface, material, available tractor and proposed dates.