ABSTRACT

This chapter reviews the principal areas that could require the use of asphalt. It discusses the considerations that will need to be taken into account when selecting the materials for the relevant layers. Areas near industrial estates will have a completely different traffic profile to those which are serving housing estates. The landing area is relatively small in terms of the overall runway and it is usual to pave the whole area with the same material. The effect of slow-moving heavy loads is close to that of industrial areas but with significantly higher loadings. Most pads will not be subject to excessively heavy loadings, but it will be repeated in the same small area and will be of a continuous nature while the helicopter is parked. Footway material does not generally take much in the way of loading because it is usually restricted to pedestrian traffic which, in terms of loading, is very small.