What are precast hollow-core decking units and when are they used?

Name: What are precast hollow-core decking units and when are they used?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The Answer is Precast hollow-core decking units, used for long spans, are placed on the steel framing with a crane. For better bonding with topping materials, their top surface is often left rough. The topping helps tie precast units together and increases a roof's or floor's structural integrity. Reinforcing can be cast in the topping.

What Are Precast Hollow-Core Decking Units and When Are They