HOW TO PREVENT TRENCH FAILURE

Most engineering trench failure can be attributed to failure to install a cage to withhold the walls of dirt suspended after excavation. The likelyhood of a collapse becomes even more prominent in conditions of wet soil such as the event of heavy rainfall. A general idea of how to prevent the incident can be found here http://www.engineering.com/Library/ArticlesPage/tabid/85/articleType/ArticleView/articleId/173/Trench-Failure.aspx