Interactive engineering model
Backfilled cylindrical dry-well screen
Route a design storm through backfill void storage and compare it with the full bottom-plus-sidewall design infiltration area.
Preparing the 3D model...
A half-sectioned soil block exposes a uniformly backfilled cylindrical dry well fed by an impervious area. The water level fills and draws down through a routed 24-hour event, arrows show bottom and sidewall infiltration, and text readouts report void storage, design volume, infiltration area, capacity, and drawdown.
Focus the 3D view and use the arrow keys to orbit, plus or minus to zoom, and Home to reset the view.
Text explanation and non-WebGL fallback
A half-sectioned soil block exposes a uniformly backfilled cylindrical dry well fed by an impervious area. The water level fills and draws down through a routed 24-hour event, arrows show bottom and sidewall infiltration, and text readouts report void storage, design volume, infiltration area, capacity, and drawdown.
The numeric controls and readouts remain usable if WebGL is unavailable. Drag or swipe the 3D view to orbit and use a wheel or pinch gesture to zoom. With the 3D view focused, use the arrow keys to orbit, plus or minus to zoom, and Home to reset. The complete numeric lesson is also keyboard-accessible in the adjacent controls and readouts. This model is an educational aid and does not replace applicable design standards or professional review.