Waffle slab with plug
First Claim
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1. A precast waffle slab structure, comprising:
- a precast waffle slab comprising a plurality of through holes uniformly distributed in and extending from a top surface to a bottom surface of the precast waffle slab generally along the thickness direction of the precast waffle slab and a plurality of side rebars extending from lateral surfaces of the precast waffle slab, wherein each of the through holes has at least one stop-profile, wherein the through holes are for exhausting dust particles from a clean room; and
at least one plug comprising at least one profile complementary to the at least one stop-profile of the through holes of the precast waffle slab, so that when the at least one plug is inserted from the upper side of the precast waffle slab into one of the through holes along an axial direction thereof, the at least one plug sits on the at least one stop-profile, and a top surface of the at least one plug and the top surface of the precast waffle slab together form a substantially continuous flat surface, the at least one plug having a height for providing sufficient support for machines placed thereon, the height being at least one fifth of the depth of the plurality of through holes.
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Abstract
The subject invention is related to a waffle slab with a plug. The waffle slab comprises a plurality of through holes from the top surface to the bottom surface thereof along its thickness direction, and at least one of the through holes has at least one stop-profile. The plug has at least one profile complementary to the at least one stop-profile of the through holes, so that when the plug is inserted into the at least one through hole, the plug sits on the at least one stop-profile and a top surface of the plug is flush with the top surface of the waffle slab.
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Citations
17 Claims
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1. A precast waffle slab structure, comprising:
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a precast waffle slab comprising a plurality of through holes uniformly distributed in and extending from a top surface to a bottom surface of the precast waffle slab generally along the thickness direction of the precast waffle slab and a plurality of side rebars extending from lateral surfaces of the precast waffle slab, wherein each of the through holes has at least one stop-profile, wherein the through holes are for exhausting dust particles from a clean room; and at least one plug comprising at least one profile complementary to the at least one stop-profile of the through holes of the precast waffle slab, so that when the at least one plug is inserted from the upper side of the precast waffle slab into one of the through holes along an axial direction thereof, the at least one plug sits on the at least one stop-profile, and a top surface of the at least one plug and the top surface of the precast waffle slab together form a substantially continuous flat surface, the at least one plug having a height for providing sufficient support for machines placed thereon, the height being at least one fifth of the depth of the plurality of through holes. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A precast waffle slab structure, comprising:
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a precast waffle slab comprising a plurality of through holes uniformly distributed in and extending from a top surface to a bottom surface of the precast waffle slab generally along the thickness direction of the precast waffle slab and a plurality of side rebars extending from lateral surfaces of the precast waffle slab, wherein each of the plurality of through holes is formed by a hollow tube made of a different material, and the hollow tube has at least one stop-profile wherein the through holes are for exhausting dust particles from a clean room; and at least one plug comprising at least one profile complementary to the at least one stop-profile of the hollow tube so that when the at least one plug is inserted from the upper side of the precast waffle slab into each of the plurality of through holes along an axial direction thereof, the at least one plug sits on the at least one stop-profile of the hollow tube and a top surface of the at least one plug and the top surface of the precast waffle slab together form a substantially continuous flat surface, the at least one plug having a height for providing sufficient support for machines placed thereon, the height being at least one fifth of the depth of the plurality of through holes. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification