BOX CULVERT CONSTRUCTION COMPONENTS

A box culvert is a reinforced concrete structure built beneath roads, railways, or embankments to safely convey stormwater, streams, or drainage flow.

Main Components

🔹 Road Pavement
🔹 Base Course
🔹 Reinforced Concrete Box
🔹 Wing Walls
🔹 Bedding Layer
🔹 Foundation/Apron
🔹 Backfill Material
🔹 Filter Layer
🔹 Cut-off Wall
🔹 Outlet Protection (Riprap)

How It Works

Water flows through the reinforced concrete box while the pavement above carries traffic loads.

Wing walls guide water, and the foundation, bedding, and backfill provide stability and prevent settlement or erosion.

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