Storm water Management Systems
CSP offers a cost effective solution to storm water management requirements and
saves valuable space. These durable subsurface structures serve as detention,
infiltration and filtration systems.
Storm water management requirements have become a common practice for most site
development. With the implementation of EPA´s Phase II Storm water Program, (NPDES), these requirements will expand even further. Corrugated steel pipe (CSP) systems provide cost effective solutions to storm water management requirements. Subsurface practices such as detention, infiltration and filtration provide a method to meet storm water objectives and permit efficient use of the site. Underground systems eliminate hazards, risks and poor aesthetics of above ground pools.
Click on image for larger view.
Detention Systems, Infiltration, CSP Sand Filters, Versatility in Fabrication, Strength, Durability Specifications:
ASTM, AASHTO
DETENTION SYSTEMS: CSP detention structures have been used predominantly to temporarily store runoff and release it at a predetermined rate. Large pipes are installed underground, often beneath parking lots, allowing above ground use of the site. The use of this land for other purposes results in substantial cost savings.
Top of pageINFILTRATION: Where the proper soils are present, perforated CSP can be used as an infiltration system; this water quality practice duplicates undeveloped conditions by directing runoff back into the ground. CSP has the advantage of minimizing excavation, as compared to a conventional infiltration trench, also allowing access into the system.
Top of pageCSP SAND FILTERS: One of the most promising techniques of providing water quality improvement is through filtration. Runoff is passed through a filter media, typically sand, for treatment purposes. These systems provide high pollutant removal efficiencies and are particularly appropriate for the “ultra urban“ environment.
Top of pageVERSATILITY IN FABRICATION: CSP can be readily fabricated into elbows, tees manifolds, inlets, and outlet control structures. The flexibility in design and system layout cannot be achieved with other materials. Also, plant fabrication means faster installation and lower job site costs.
Top of pageSTRENGTH: CSP provides a high strength containment system that can be used for heavy loading and low cover conditions. The combination of steel´s proven long term material properties and fittings reinforcement (ASTM 998) design criteria ensures product performance throughout the life of the structure.
Top of pageDURABILITY: Inspections performed by Parsons Brinkerhoff and research by
Corpro Companies confirms that CSP storm water management systems are performing well.
While conditions in most systems are benign, a broad range of CSP coatings
are available to economically meet any project design life.
Durability Guide, Condition Survey for Detention Systems
ASTM A760/A760M
Standard Specification for CSP Metallic-coated for Sewers and Drains.
ASTM A762/A762M
Standard Specifications for CSP Polymer Pre coated for Sewers and Drains.
ASTM A796/A796m
Standard Practice for Structural Design of CSP, Pipe-Arches, and Arches for Storm and Sanitary Sewers
ASTM A798/A798M
Standard Practice for Installing Factory-Made CSP For Sewers and Other Applications
ASTM A849
Standard Specification for Post-Applied Coatings, Paving's, and Linings For Corrugated Steel Sewer and Drainage pipe
ASTM 998
Fittings ReinforcementTop of page
AASHTO M-36M
Standard Specification for CSP, Metallic-Coated, for Sewers and Drains
AASHTO M-190M
Standard Specification for Bituminous Coated Corrugated Metal Culvert Pipe And Pipe Arches
AASHTO M-245M
Standard Specification for CSP, Polymer Pre coated for Sewers and Drains
ASHTO Standard Specifications for Highway Bridges Division 1, Section12
Soil Corrugated Metal Structure Interaction Systems
AASHTO Standard Specifications for Highway Bridges Division 2, Section 26 Metal CulvertsTop of Page