| 摘要 |
PROBLEM TO BE SOLVED: To provide an embedded member for a concrete slab, which facilitates installation thereof on a concrete board, and prevents resonance between upper and lower shells, i.e., a drumming phenomenon, and to provide the precast concrete board and a hollow concrete slab. SOLUTION: The embedded member 1 for the concrete slab has at least one groove 2 formed in an upper surface thereof and at least one groove 2 formed in a lower surface thereof, and the grooves 2 intersect each other. The grooves 2 each have a depth deep enough to form a through hole 4 at an intersection thereof.
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