Sound-insulating structure for building

A sound insulation structure for a building, comprising:

• a floor material;
• a ceiling material opposed to the floor material in a vertical direction with a space in a building interposed therebetween, the ceiling material being made of a gypsum plasterboard;
• a partition wall extending in the vertical direction, partitioning the space into a first space and a second space adjacent to each other in a horizontal direction, and having a first outer surface facing a first space side and a second outer surface facing a second space side;
• and
• at least one face material out of a first ceiling-side sound insulation face material having a coincidence frequency different from that of the ceiling material, stuck to at least a portion of the ceiling material between a position corresponding to the first outer surface and a position corresponding to a center of the first space in the horizontal direction, being made of a gypsum plasterboard, and having a thickness different from that of the ceiling material and a second ceiling-side sound insulation face material having a coincidence frequency different from that of the ceiling material, stuck to at least a portion of the ceiling material between a position corresponding to the second outer surface and a position corresponding to a center of the second space in the horizontal direction, being made of a gypsum plasterboard, and having a thickness different from that of the ceiling material, wherein:
• the sound insulation structure further comprises a first cradling and a second cradling adjacent to the first cradling, the first cradling and the second cradling overlapping the ceiling material in the vertical direction and disposed so as to come into contact with the ceiling material, and
• the at least one face material is stuck to the ceiling material in a space between the first cradling and the second cradling.

A sound insulation structure for a building, comprising:

• a floor material;
• a ceiling material opposed to the floor material in a vertical direction with a space in a building interposed therebetween;
• a partition wall extending in the vertical direction, partitioning the space into a first space and a second space adjacent to each other in a horizontal direction, and having a first outer surface facing a first space side and a second outer surface facing a second space side;
• an outer wall extending in a direction intersecting the partition wall, the outer wall including an outer wall panel, an outer wall face material disposed with a hollow portion interposed between the outer wall panel and the outer wall face material, and a vertical bar extending in the vertical direction in the hollow portion and being disposed so as to come into contact with a back surface of the outer wall face material facing the hollow portion side;
• a first outer wall side sound insulation face material having a coincidence frequency different from that of the outer wall face material and stuck to at least a portion of the outer wall face material between a position corresponding to the first outer surface and a position corresponding to a center of the first space in the horizontal direction, and
• a second outer wall side sound insulation face material having a coincidence frequency different from that of the outer wall face material and stuck to at least a portion of the outer wall face material between a position corresponding to the second outer surface and a position corresponding to a center of the second space in the horizontal direction, wherein
• the vertical bar is disposed on the outer wall face material between the first outer wall side sound insulation face material and the second outer wall side sound insulation face material, and
• the first outer wall side sound insulation face material and the second outer wall side sound insulation face material are stuck to the back surface of the outer wall face material.