Backfilling the sides

Schritt 10: Seitenverfüllung herstellen - Seitenverfüllung bis Höhe Rohrscheitel ist lagenweise auszuführen. Nur „leichtes“ Verdichtungsgerät verwenden.
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3 Backfilling the sides

  • Before each stage of backfilling, pull up the shoring to the required height.
  • Backfill the sides up to the top of the pipe layer by layer.
  • Compact each layer in multiple passes.
  • Direct the force of compaction towards the in-situ soil of the trench wall.
  • Use only lightweight compaction equipment.
  • Be sure the backfill material is free of stones and foreign substances/objects (e.g. wood, waste, topsoil).

Covering the pipe

Schritt 11: Abdeckung herstellen - Schichtdicke der Abdeckung nach Vorgabe Bauleiter oder Polier. Mindestens aber über Rohrschaft größer 15 cm und über Glockenmuffe größer 10 cm. Empfohlene Dicke der Abdeckung größer 30 cm (Regelwerk A-139).
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4 Covering the pipe

Follow the instructions of the foreperson for the depth of the backfill layer covering the pipe.
Minimum depths:

  • above the pipe shaft, > 15 cm
  • above the pipe bell, > 10 cm

Recommended depth of the backfill covering layer in the guidelines (A 139):
– over 30 cm.

  • Before each stage of backfilling, pull up the shoring to the required height.
  • The backfill covering layer should be level and extend across the full width of the trench.
  • Compact the covering layer in multiple passes, directing the force towards the in-situ soil of the trench wall.
  • Use only lightweight compaction equipment.
  • Be sure the backfill material is free of stones and foreign substances/objects (e.g. wood, waste, topsoil).
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