Mastering the Design of Corrugated Metal Pipe Detention and Infiltration Systems
(Print PDH from the September 2025 issue of Informed Infrastructure)
Author: Robert Chapman and Andreea Simescu, P.E.
As land values rise and site complexity increases, civil engineers are under pressure to deliver efficient and cost-effective stormwater management systems. These systems must satisfy increasingly stringent regulatory requirements while maximizing usable land and minimizing lifecycle costs. Corrugated metal pipe (CMP) detention and infiltration systems have emerged as a versatile and adaptable solution that addresses these needs, particularly in urban and constrained project sites.
This article outlines key considerations for selecting and designing CMP systems, providing practical guidance informed by field experience, engineering principles and best practices in constructability. Whether you’re designing for shallow footprints or deep storage, infiltration or detention, the right approach can result in more durable and cost-effective outcomes for engineers and owners.
LEARNING OBJECTIVES
By the conclusion of this article, the reader should be able to:
• Understand the advantages of underground detention and infiltration systems.
• Identify key factors in material and system selection.
• Apply best practices for system layout and design optimization.
• Understand how proper system detailing, access placement, pretreatment and installation practices contribute to extended service.