PVC - Pipes and Pipe Systems # 1988 Bath
A model is established for the calculation of flexural rigidity (EII of pipe sections that contain a solid skin - foamed core - solid skin structure. Stiffness of t h e pipe can be calculated from (EII. The model accommodates different and similar materials in the skin and the core, a range of section dimensions (both external and internal), a density gradient within the foamed material and full range of foam densities. Predictions from the model a r e compared with experimental results and agreement is good.