Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO HDG CHAPTER 12:2007
• Năm ban hành / Publication date: 2007
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: STORMWATER MANAGEMENT
• Thay thế cho / Replace: AASHTO HDG VOL XII:1999
• Số trang / Page: 45

Phạm vi áp dụng / Scope of standard

INTRODUCTION: Storm drainage, which now includes stormwater
management facilities, is an integral and expensive aspect of
highway design, highway construction and, all too often forgotten,
highway maintenance. This chapter provides an overview of the
concepts and practices of this challenging aspect of highway
drainage.

The purpose of this chapter is to acquaint the hydraulics
engineer with the principles and practices of stormwater management
as they relate to transportation facilities. This Chapter provides
a brief review of the current and ever-changing maze of regulations
and a discussion of the potential impacts of unmanaged runoff on
downstream properties and ecosystems. A large section of the
chapter is allotted to the development and implementation of an
effective stormwater management program including the application,
design, construction and maintenance of Best Management Practices
(BMPs). This chapter also offers some insight into the future of
stormwater management and provides a list of reference
materials.

A stormwater management program should involve a comprehensive
approach to both water quantity and quality. Practices, which are
adopted in the areas of operations and maintenance, such as salt
containment and reduced pesticide/herbicide usage, can have
significant benefits to the environment. Construction practices,
which stage grading operations and reduce sediment loads, are also
important to the overall management program. This chapter, however,
will focus on the use of permanent structural controls to reduce
surface water flood hazards and environmental impacts resulting
from highway facilities. Information on temporary controls suited
to manage runoff during construction can be found in Chapter 3.