In urban areas, nowadays, ultimate uses for completed landfills of municipal solid wastes are watched with interest. Most of completed landfills are used for parks, baseball grounds and so on. However, in the near future, we will have to consider how to use those for much higher level. There fore, we must examine records of those, and study about prospective land uses. For the short-term land use planning, the final disposal sites are left in the form of no use, or use for parks. Meanwhile, for the long-term land use planning under the correct concept of planning, we must design a basic concept to satisfy social needs. In this study, we show a few ultimate use plans for completed landfills of municipal solid wastes, in the future, according to our investigation. In conclusion, in any cases, we find that those have to be the continuous system to the ultimate plannings, from the beginning of the landfills plannings.
The ground vibration problems generated by running trains and highway traffics have much more complicated factors. Therefore, it is not too much to say that the definite countermasure for the ground vibration probrems has not yet been developed so far. In the present study, expanded poly styrol block executed as vibration decreasing mat in order to find out a practical method of decreasing ground vibration caused by road traffics. The followings are the summary of the results gaind in this reasearch, mainly composed by the measurements of the ground vibrations. 1. The decrease of vibration at all-pass level owing to EPS on surface ground is expected to be 3.5-9.5 dB. 2. Especially large vibration decreasing effects are seen at the frequency of 20-40 Hz. 3. The decrease in vibration between the upper and lower end of EPS is expected to be 6.9-9.6 dB. 4. The caluculated values and measured values within the frecuency range of 8-80 Hz coincide well. From this, the vibration decrease owing to EPS may be assumed using wave penetration theory.