| 摘要 |
FIELD: sewerage.SUBSTANCE: invention relates to sewage systems. Surface module comprises base, above which protrude spacers, which taper is determined by angle α relative to vertical. These elements in cross section have passing wavy side surfaces, which have alternating wave crests and recesses of wave. Wave tops are made with transition into recesses of wave through transition sections. Transition sections have smaller thickness of material than wave recesses.EFFECT: improved suitability for stacking and maximum high stability.8 cl, 6 dwg |
