Ricerc@Sapienza

This two-part paper presents a comprehensive methodology for lighting calculation of a road pre-tunnel. The adequate lighting of road tunnels, especially in their entrance zone during the day-time hours, is a very important factor to maintain road safety and to ensure a good level of service. These targets are commonly achieved by means of artificial lighting systems. In some cases, nevertheless, it could be preferable to build a pre-tunnel, which reduces and controls the natural lighting contribution in the threshold zone of the tunnel.

The calculation of the stored waste volume is a necessary operation for the proper management of landfll. The waste in input in the landfll are subjected, for legislation, to weighting; in practice, people use the conversion factors from tons to cubic meters to derive the residual volumetric capacity of the landfll. It is therefore very important to correctly estimate these coeffcients in order to correctly determine the residual volume than had been approved. In this study, specifcally, was estimated the value of the conversion coeffcient for inert waste.