| 摘要 |
PURPOSE: To provide a technique for reducing the amount of driven pipes for wiring a plurality of communication lines in an apartment house. CONSTITUTION: A vertical wiring 1 penetrates in vertical direction through each floor level from the lowest floor to the highest floor of an apartment house. This vertical wiring 1 is unified with at least 2 kinds of communication line. Each communication line has branch points 72 and 73 on different floors from the vertical wiring 1 and use branch wiring 20 and 30 branched from the branch point to respective occupancy rooms. |
