Indicative notice - Langebro bridge - renovation of bascule span - Registration of internal condition of counterweights by non-destructive methods.

the density and thus minimize the required size of the counterweights. The steel boxes are provided with internal steel bulkheads lengthwise and crosswise to increase rigidity and load-carrying capacity. Under the influence of many years of seeping water, significant rust attacks have occurred on st

eel (both structural steel and embedded scrap) and degradation of concrete. Through thickness meas-urements (ultrasound and drilling holes) from the outside, a varying degree of cross-sectional loss has been found on the outer steel plates