締しめ固かためる

ichidan verb, transitive verb

compact; tamp down; compress

Used for compressing soil, gravel, or other granular materials to increase density, often in construction or civil engineering contexts.

• 道どう路ろを作つくる前まえに、地じ面めんをしっかり締しめ固かためる必ひつ要ようがある。

  Before building a road, it is necessary to compact the ground firmly.

• 重じゅう機きを使つかって土つちを締しめ固かためた。

  They compacted the soil using heavy machinery.