A professional's guide to structural waterproofing | Triton Systems A 16 minute overview and introduction to structural waterproofing, covering all aspects of BS 8102:2009, the Code of Practice for protection of below ground structures against water from the ground. An experienced and CSSW qualified specialist explains the three different types of structural waterproofing system defined in the Code of Practice and suggests which one, or which combination, should be specified in a variety of projects.