摘要:
Method for repaving a road surface consisting of paving elements laid in bond, such as a road surface for vehicles or pedestrians, wherein by a lifting force exerted onto the lower side of the elements by supports, successively a number of packages of elements are lifted out of the road surface, while preserving the bond of the elements in each package, the packages while preserving the bond are successively put aside at a distance from the place of origin from the road surface, preferably in stacks of packages, the cleared basis, particularly the sand bed, is profiled, and the packages are successively placed in situ again, while preserving the bond between the elements within the individual packages.
摘要:
Insertion to be placed in an earth slope of a water course said earth slope being part of an earth body, wherein the insertion is tray-shaped for defining a niche in the slope and is provided with a passage for a water discharge pipe extending out of the earth body in order to drain in the water course by means of an end portion accommodated in the niche, wherein the end of the end portion of the water discharge pipe is substantially situated in one plane with the slope or is receded with respect to the slope, characterised in that the insertion is provided with a ground anchor, such as a plate that extends substantially vertically from the lower side of the insertion.
摘要:
Tunnel arrangement (1) comprising a tunnel tube (2) having a tunnel floor (5) and one or more substantially water-impermeable tunnel portals (3) that run upwardly inclined from a lower end situated near the tunnel floor (5) to an upper end (7a), wherein the tunnel is placed in a soil, in which soil a poorly permeable or impermeable layer is present, such that the tunnel floor (5) extends into or deeper than the poorly permeable or impermeable layer, wherein confined water, in particular artesian water, is present below the poorly permeable or impermeable layer, wherein near the upper end (7a) of the tunnel portal (3) a water discharging drainage duct (14) is arranged, preferably extending transverse to the tunnel portal (3), which duct (14) is provided with at least one first passage (24) situated in the soil for receiving the confined water from the soil.