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Jet Patching - Jet Patching is a pothole patching method. It is also called jet injection patching.
Jet patching is carried out in four stages:
- High pressure air is used to remove all debris from the pothole
- the pothole is sealed with an asphalt emulsion to prevent water from entering the pavement subsurface
- the aggregate is mixed with an asphalt emulsion and sprayed into the pothole at high velocity
- finally a finer, dry aggregate is sprayed over the filled pothole to prevent the wet asphalt emulsion from adhereing to tyres until the patch has dried.
Jetty - A jetty is a structure extending into a body of water, which protects a harbor or coastline from the effects of currents and tides.
Job Card - A job card or work ticket is a hard copy document given to a person responsible for carrying out maintenance or other works on an asset or asset component that details the work that needs to be undertaken. The extent of work carried out is typically recorded on the card, and returned to the point of issue, so that the information can be recorded against the asset.
Job Safety Analysis - A Job Safety Analysis (JSA) is a safety management tool in which the risks or hazards of a specific job in the workplace are identified, and then measures to eliminate or control those hazards are determined and implemented.
Jump Up - The term jump up, which is also known as vertical riser, is often used to describe a sewerage house connection branch.
Junction Pit - A junction pit is a stormwater pit lacking an inlet of any type.
Junction Structure - A junction structure is a manhole, pit or chamber constructed at the junction of two or more pipes, or at a change of grade.
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