A general purpose machine is always sufficient in construction jobs, no need for special excavators.

When selecting an excavator bucket, it is enough to only consider digging depth because other parameters (height and reach) are always bigger anyway.

A wider shoe width always reduces ground pressure, but it may also reduce maneuverability.

If lifting capacity is ignored, the excavator may still operate normally, but payload handling could become unsafe.

Understanding customer operation is optional, machine size is standardized so operator needs don't matter.

Short tail excavators are only compact versions of standard excavators, with no difference in design for narrow spaces.

For building demolition with hydraulic breakers, the method is bottom-up demolition.

High reach demolition machines with mechanical cutters are delivered to customers as a knockdown assembly system.

Super Long Front (SLF) excavators are limited only to one attachment only, usually bucket.

Utility/mini excavators for urban works often use rubber shoes and can be customized with tilting booms for narrow spaces.

Rail excavators have unique bogie structures that allow them to run directly on railway tracks.

For special application like tunnel construction, excavator design engineers don't need to understand the customer process. Only machine specs is matter.

Telescopic excavators are designed for deep foundation works, typically using clam shell buckets.

Vibro hammers or sheet piles are not considered part of foundation works.

Backhoe loaders are need 2 operators front side and back side.

Hybrid excavators use AC motors, not DC motors, for electric drive.

Hybrid excavators generate electricity during idle load through engine generators, and also during swing braking.

Because smart construction machines use 3D design with complex data, to operate this machine need expert operators.

Smart construction technology relies on sensors like stroke sensors in cylinders, GNSS antennas, and IMU for accurate operation.