安あん全ぜん率りつ

noun

safety factor

Technical term used in engineering and design to describe the ratio of a structure's strength to the expected load.

• 橋はしの設せっ計けいでは、安あん全ぜん率りつを十じゅう分ぶんに取とる必ひつ要ようがある。

  In bridge design, it is necessary to allow a sufficient safety factor.