Maisonette type apartment house design structure for reducing noise between floors and allowing easy remodeling

A maisonette-type apartment house design structure that reduces noise between floors and allows easy remodeling, the maisonette-type apartment house design structure being a design structure of an apartment house in which a plurality of apartment units (A), each of which is a maisonette in which two floors including an upper floor (UF) and a lower floor (LF) are combined into a single apartment unit, are repeatedly arranged in vertical and horizontal directions, wherein, in the design structure:

• each apartment unit (A) has a living room (LR) disposed on the upper floor (UF) and a plurality of bedrooms (BR) disposed on the lower floor (LF), and double pillars (10) spaced apart from each other are installed on side boundaries of adjacent apartment units (A);
• the double pillars (10) include a pair of first pillars (10a) disposed inside an apartment unit (A) and a pair of second pillars (10b) disposed outside the apartment unit (A) and disposed inside another apartment unit (A) adjacent thereto;
• a first beam member (20a), which serves as a structure carrying a load, is connected to and installed at the first pillar (10a), and a second beam member (20b), which serves as a structure carrying a load, is connected to and installed at the second pillar (10b);
• a double pillar connecting beam (22) configured to connect the first pillar (10a) and the second pillar (10b) is additionally provided on a side surface of a slab of the lower floor (LF);
• and
• a cantilever slab (30), which is connected to and supported by only the first beam member (20a) and spaced apart from the second beam member (20b), is installed between the first beam member (20a) and the second beam member (20b).