Section 11. Shells Problem 11.1. Air supported tent Problem 11.2. Spherical dome Problem 11.3. Skylight on spherical dome Problem 11.4. Paraboloid of revolution Problem 11.5. Truncated cone Problem 11.6. Parabolic barrel vault subjected to now load Problem 11.7. Parabolic barrel vault subjected to self-weight Problem 11.8. Elliptic paraboloid roof with two perfect support Problem 11.9. Elliptic paraboloid roof with four perfect support Problem 11.10. Assembled hyperbolic paraboloid roof Problem 11.11. Cylindrical shell Problem 11.12. Edge disturbance of a spherical dome Problem 11.13. Spherical dome with mot adequate membrane support Problem 11.14. Edge disturbance of a spherical dome with skylight Problem 11.15. Skylight on spherical dome with not adequate membrane support Problem 11.16. Edge disturbance of barrel vault Problem 11.17. Truncated cone with not adequate membrane support Problem 11.8. Truncated cone without upper ring