... DESIGN MODELS MATHEMATICAL CALIBRATION CRACKS CRACKING STRESS RINGS BENDING MOMENTS CREST LAYERS HDPE DENSITY HIGH POLYPROPYLENE SOUTH AFRICA AFRICA KEARSLEY E T AL. 10 8 g6 me U4 2 Fig. 3. Measured and 0 calculated behaviour 0 10 20 30 40 50 of steelpipe (B mm; Deflection: mm...

... Physicalmodelsrepresent a powerfultechnicaland public relationstool in a field where manyof the physical processesarenotwellenoughunderstood to be described accuratelyby mathematical formulations. Coastal modelsare typically scaled according to froudian similitude although certain aspects, such as the sizing of model...