What are the disadvantages of hollow core slab?

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Q&A: Disadvantages of Hollow Core Slab

Q: What are the disadvantages of hollow core slab? A: Hollow core slabs have several disadvantages, including limited span capacity, poor fire resistance, and the need for careful handling during transportation and installation. Q: Why does hollow core slab have limited span capacity?A: Hollow core slabs have limited span capacity compared to other types of precast concrete slabs because they are designed with voids or cores throughout their cross-section. These voids reduce the amount of concrete in the slab, which can lead to decreased load-bearing capacity over longer spans. Q: Why does hollow core slab have poor fire resistance?A: The voids or cores in hollow core slabs can provide channels for fire to spread through the slab more quickly than solid slabs, reducing their fire resistance. As a result, additional fire protection measures may be needed to ensure the safety of buildings with hollow core slabs.Q: Why is careful handling required for hollow core slabs during transportation and installation?A: Hollow core slabs are relatively lightweight compared to solid slabs, making them more susceptible to damage during handling, transportation, and installation. Care must be taken to prevent cracking or breakage of the slabs, which can compromise their structural integrity and durability.In conclusion, while hollow core slabs offer many advantages, such as cost-effectiveness and rapid installation, they also have disadvantages that should be carefully considered before selecting them for a construction project. By understanding these limitations and taking appropriate measures to address them, the potential risks associated with hollow core slabs can be minimized.

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