§8-5 The Torsion of Equal-Section Straight Pole §8-7 The Torsion of Elliptic Section Pole §8-6 Membrane Analogy of the Torsion Problem §8-8 The Torsion of Rectangular Section Pole §8-1 Solving the Space Problem According to the Displacement §8-2 The Semi-space Body Subjected to Gravity and Uniformly Distributed Pressure §8-3 A Semi-space Body is Subject to Normal Concentration Force at the Boundary §8-4 Solving the Space Problem According to the Stress