Abstract: The object of the invention is to provide a method and system for impregnating a liner, simultaneously reducing the risk of a void inside the liner after curing. This object is achieved by an impregnation plant (10) comprising a vacuum lock (16) comprising a housing having an inlet (14) and an outlet and defining an ambient pressure space (15) near the inlet and low pressure space (24) near the outlet. The pressure spaces are separated by a seal (20) comprising a first and a second sealing element (22, 23), allowing the fibrous liner (12) to be conveyed there between from the inlet (14) towards the outlet. The liner is degassed by compressing it between the first and second sealing elements (22, 23) and is subsequently relaxed in an uncompressed state inside the low pressure space (24).

Abstract: The modular pillar is assembled by overlaying precast brick layers, one on top of the other to form a pillar of such layers. Each layer has a depression, groove, channel, cut-out, or the like, of recessing one of its horizontal surfaces for interlocking mating with a corresponding elevation or protrusion on the adjacent horizontal surface of the next adjacent layer.