It is found that for models with low node counts, the CPU is faster, while for medium to highly dense models, the GPU acceleration can reduce absolute run-times by a factor of three to just over eight.
The subsoil in the city is characterised by a sand and gravel deposit, ranging from medium to highly dense, down to a depth of 8 10 m; below this depth randomly distributed cemented soil (in cases a conglomerate), due to calcareous deposition processes, is often present.
Below this layer is a 10 m of soft silty clay followed by a layer of medium dense to dense silty sand and medium stiff silty clay of about 20 and 7 m depth, respectively.
Pile set-up occurs in almost all types of soils including organic and inorganic clays, loose to medium dense silts, sandy silts, and fine sands [16, 17].
The stratigraphic sequence in the profile comprises medium dense to coarse grained silty clayey sand to 16.80 m depth, below loose grey organic silty clayey sand from the surface.
Performance of the suggested modelling framework is illustrated by a series of simulated vibration responses of a virtual footbridge due to light, medium and dense pedestrian traffic.
Various number of soil springs were tried for loose, medium, and dense sand to determine the suitable number and distribution of springs that can be used with each type of sand.
Different nose shapes (spherical, flat, hemispherical, conical and ogival) and mass (7 g, 15 g and 20 g) of projectiles were fired into sand samples of relative densities ranging from medium dense to very dense state (60%, 75%and90%0%and90%
Portions of efflorescence samples were dissolved in purified water and filtered through red dot (medium dense, medium fast filtering) quantitative filter paper.
According to the wave theory, light should be retarded as it passes from a rarer to a denser medium; according to the emission theory, it should be accelerated.
