McKinney Civil Engineering

Sedimentation tanks are large, calm open-air water reservoirs where treated water is held completely still for several hours. This process is used to let gravity pull heavy clumps of dirt and organic waste down to the floor as sludge, leaving clean water at the surface (Wikipedia).

Step Footing is a footing that changes levels in stages to accommodate a sloped grade; this allows the foundation to follow the natural contour of a hill while keeping the interior floor levels consistent (Wikipedia).

Bollard (Security)
Security bollards are short, sturdy posts installed to protect commercial building entrances and utility meters from vehicle impacts. Many are reinforced with concrete and steel to act as a physical barrier against accidental or intentional collisions. (Wikipedia)