Jack-Up Construction

A method of lifting heavy structures or platforms using hydraulic jacks, commonly used in offshore and bridge construction.

Job Hazard Analysis (JHA)

A safety assessment process that identifies potential hazards in construction activities and establishes preventive measures.

Joint Sealant

A flexible material applied to expansion joints, cracks, and seams in construction to prevent water infiltration and accommodate movement.

Joint Venture Agreement (JVA)

A contractual partnership between two or more companies to collaborate on a construction project, sharing risks, resources, and profits.

Joist Girder

A type of steel truss used to support joists and distribute structural loads in commercial and industrial buildings.

Jump Forming

A construction technique where formwork for concrete structures is progressively lifted as each section cures, often used in high-rise construction.