Glossary

Glossary

drivescrew, screw nail

A type of metal fastener; a helically threaded nail, driven with a hammer; has a higher withdrawal resistance than a […]

Glossary

drive shoe

A reinforcement placed at the bottom of a pile to prevent damage to the pile during driving.

Glossary

driveway

A private way or road, which is primarily for use by automobiles.

Glossary

driving machine

The power unit which applies the necessary energy to raise and lower an elevator or dumbwaiter car or to drive

Glossary

driving resistance

The number of blows of a pile-driving hammer which are required to advance the point of a pile a specified

Glossary

droop

The deviation from a preset value of a controlled liquid level, temperature, variable pressure, or differential pressure (at minimum controllable

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