cofferdam
Definition
Noun: 1. A temporary watertight structure: A cofferdam is a large, sealed enclosure built in water to create a dry work area. It is pumped out to allow construction, repair, or inspection of structures like bridge piers, dams, or ship hulls below the waterline.
Usage
A cofferdam is used in civil and marine engineering to exclude water from a specific site. It is a temporary construction, installed and later removed after the underwater work is complete.
Examples
- The engineers built a cofferdam around the bridge foundation so workers could pour concrete in a dry environment.
- Repairing the ship's propeller required sealing the damaged section with a cofferdam.
- Before constructing the lock, the riverbed was exposed by surrounding the area with a cofferdam.
Advanced Usage
- "To install/construct a cofferdam": The process of building the temporary enclosure.
- The first step in the project was to install a cofferdam.
- "Within the cofferdam": Describes the dry work area created.
- All excavation took place within the cofferdam.
Variants and Related Words
- Caisson (noun): A related watertight structure, often used for similar purposes. A caisson is typically a permanent structural element or a box that is sunk into place, whereas a cofferdam is generally a temporary enclosure.
- The caisson was sunk to the riverbed to form the foundation.
Synonyms
- Coferdam (noun): An alternate, less common spelling.
- Coffering (noun): The technique or structure of constructing a dry enclosure in water.
- Temporary dam (noun phrase): A descriptive synonym emphasizing its function and non-permanent nature.
Related Phrases
- Pumping out a cofferdam: The critical action of removing water from inside the sealed structure.
- After the seal was confirmed, they began pumping out the cofferdam.
- Cofferdam construction: Refers to the field or activity of building these structures.
- Specialized firms handle cofferdam construction for major infrastructure projects.
Noun
-
large watertight chamber used for construction under water
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