| 摘要 |
FIELD: construction. ^ SUBSTANCE: cup-like slab is provided, which, with the help of fastening facilities may be fixed on back side of concrete wall curb element and comprises spherically arranged area of slab with hole, where fastening nut is arranged with radial gap. Besides, fastening nut comprises receiving element to receive edges of hole in spherical area of slab, arranged as radial slot passing in circumferential direction. ^ EFFECT: improved operational characteristics. ^ 9 cl, 4 dwg |
