The American Association of State Highway and Transportation Officials (AASHTO) Drainage Manual (2014) provides a template and guidelines that facilitates state transportation agencies in the ...

Most people planning an extension spend a lot of time thinking about the visible parts of the project – the kitchen or the feature glazing for example. However, some of the most important construction ...

Proper Slope Requirements for Water Management Effective drainage design requires a minimum 1% slope (1 foot of fall per 100 feet) for paved surfaces to ensure water flows away from buildings and ...

Drainage systems are divided into two categories: minor and major. The minor system, which consists of swales, small ditches, gutters, small pipes, and the other various types of inlets and catch ...

Poor drainage is a major concern at many golf courses. Drainage issues cause undesirable playing conditions, cart restrictions and course closures, leading to unhappy golfers and lost revenue.

Suggested Citation: "1 Background." National Academies of Sciences, Engineering, and Medicine. 2025. Development of a New Highway Drainage Manual. Washington, DC: The National Academies Press. doi: 10 ...