Water-retaining structure
Waterproofing dams and the like
Waterstop for monolith joints
Waterstop for monolith joints and method
Watertight gate having gate leaf connected to foldable support
Watertight walls for hydraulic structures in compacted concrete
Wave barrier
Weak link prop for wicket dam
Weir
Wicket dam and lifting jack
Wicket dam lifting module
Width expandable modular ditch liners
Wier construction