Site inspection of Box Culvert Inlet Chamber
First Lift Concreting in
Inlet Chamber of Box Culvert
Large structures are constructed in multiple lifts to control heat of hydration, ensure proper compaction, reduce formwork pressure, and minimize cracking, which improves structural safety and durability.
What is a Box Culvert?
A box culvert is an RCC structure used to pass water under a roadway or embankment while carrying traffic loads. It is a rectangular or square-shaped concrete structure that allows water to flow while supporting the weight above.
What is an Inlet Chamber?
An inlet chamber is a structure provided at the upstream end of a culvert or drain to collect, regulate, and smoothly guide incoming water into the culvert. It helps control flow and prevents debris from entering.
🔧 Why Construction in Multiple Lifts?
Heat Control
Controls heat of hydration during curing
Compaction
Ensures proper compaction of concrete
Formwork Pressure
Reduces pressure on formwork
Crack Prevention
Minimizes thermal cracking
📸 First Lift Concreting - Site Photos
🏗️ First Lift in Progress
Initial concrete placement for the inlet chamber
🧱 Concreting Operations
Pouring and compaction of concrete
📐 Formwork & Reinforcement
Ready for the first lift pour
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