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Calculating TSS Efficencies



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SHSAM is a 3rd party software tool created by Barr Engineering. This software is free to the public as a tool to help engineers calculate stormwater TSS efficiencies. It will allow you to calculate TSS on various products that are on the market. Upstream's SAFL Baffle is one of the products you may compare with hydrodynamic separators, vaults, chambers and more.

There are products on the market that are not available in SHSAM due to lack of testing data. In order to calculate TSS, rigorous testing must be performed on any device before SHSAM can work with it. Testing, such as: multiple sump strucuture sizes, various pipe diameters and inlet to outlet angle, as well as testing the effects of trash on the device.

Below you will find a number of quick videos that will explain more about SHSAM and how and why to use it. There is also a link below, that will take you to Barr Engineering's SHSAM download page.

Download SHSAM Software


Introduction to SHSAM



What does SHSAM do?


Reliability of SHSAM


How to Download and Install


How to Use SHSAM


Best Practices & Limitations


Particle Sizes


Precipitation Data




Download SHSAM Software
Baffle Home
SAFL Baffle Brochure (PDF)

Sediment, Trash & Oil Tips:

Baffle Installation
Design Guides

Rigorous Testing
  • Trash & Anti-Clogging
  • Multiple Inlet Pipes
  • Angled Pipes

SAFL Baffle Research & Testing Documents




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US Patents 8,663,466 B2 and 8,715,507 B2
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