| 摘要 |
PROBLEM TO BE SOLVED: To provide a tatami mat of which the total cost is reduced by reducing the number of tatami mat per a room as much as possible and by relatively reducing wear and a ratio of sides, and further, which can reduce laborious laying work or the like. SOLUTION: The tatami mat is so comprised that it has longer short sides than a usual tatami mat, and, its tatami facing is formed by weaving artificial rush, the short sides are the length obtained by dividing the length of one side of a room, to which the tatami mats are laid by an integer, and the long sides of the tatami mat are the length obtained by dividing the length of the other side of the room by an integer.
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