Oakville High School STEM students work with Clayton Engineering survey crews

The passing of the 2021 bond issue will provide building and site improvements to several schools within the Mehlville School District.  The Oakville High School STEM program is engaging their students in the development and design process to issues that affect their campus.  The STEM program will allow student input to the new features being developed within the courtyard area at the high school.  The photos depict students engaged in the survey process, the first step in determining existing site conditions.  Students were able to learn about the different types of equipment used to collect topography to be used in developing design plans.  The STEM program will further aide in the design process.  Students will be able to provide design input which will ultimately be constructed on their campus.  We look forward to the opportunity to work with the program and mentor and educate future engineers and surveyors.

Ameren Missouri Opens New North Operations Facility

The Clayton Engineering Company provided construction staking services for the Ameren North Operations Facility.  Highlights of the project include a 19,6000 square foot office building for administrative offices and a crew area, a 26,000 square foot open truck shelter for 42 trucks, a 6,400 square foot storage building and a 4,400 square foot 3-sided trailer storage building.

A link to the St. Louis Business Journal is located here: St. Louis Business Journal Ameren North

Missouri Chamber of Commerce and Industry recognizes Clayton Engineering as a Silver Level Workplace

The Missouri Chamber of Commerce and Industry has recognized The Clayton Engineering Company as a Silver Level Workplace, with 80% – 89% of all employees having received their Covid-19 vaccine.

The COVID Stops Here campaign recognizes Missouri workplaces that have achieved widespread vaccination. We are celebrating employers that are leading the fight against this virus — and encouraging more Missouri workplaces to join their ranks.

As we urgently work to stop the spread of coronavirus — including the dangerous new Delta variant — employers are playing a very important role.

We encourage employers across Missouri to talk to their staff members about the need to get vaccinated and keep track as more staff members get vaccinated.”

Mehlville School District Bond Issue Passed By Voters

The Clayton Engineering Company is the Civil Engineer and Surveyor for the Mehlville School District.  The district will be making improvements to quite a few schools within the district as part of the bond issue recently passed by voters.  We look forward to being a part of the team.

An article in the Call Newspaper is located here: Call Newspaper-Mehlville School District

2020 List of St. Louis’ Largest Construction Projects

The Clayton Engineering Company is the Civil Engineer and Surveyor for the new Cortex office building project.

An article in St. Louis Business Journal is located here: Cortex is listed at #22

An article in STL Today is located here: Cortex Expansion Article

Locust Street Apartments Under Renovation

Clayton Engineering is the Project Surveyor with Pinnacle Contracting’s 1815 Locust project for Screaming Eagle Development.

An article in St. Louis Business Journal is located here: 1815 Locust Street Apartments

South Tech High School to receive new security vestibule.

South Tech High School is set to receive a new security entrance. The 2,444 square foot addition is planned to be open in 2021. The vestibule will be constructed in combination with a new bus canopy.

An article on St. Louis Call Newspapers.com is located here: South Tech High School Security Entrance

Cora Island – Restoring Habitat

The Cora Island Project was a component of the U.S. Army Corps of Engineers overall Missouri River Recovery Program.  In cooperation with the U.S. Fish and Wildlife Service the goal was to restore 1,265 acres of shallow water habitat by constructing channel chutes from the Missouri River to reclaimed floodplain.  The Clayton Engineering Company provided GPS control and set monumentation for machine control throughout the project.  Further involvement included 3d topographic models using survey data and data provided by the U.S. Army Corps of Engineers to determine earthwork quantities for the new chutes.  As-Built documents were provided for model comparisons from pre and post conditions.

Cora Island was named after a sunken steamboat (Cora #2) that became snagged near the mouth of the Missouri River and Mississippi River confluence in the late 1800’s.  Over time, sediment and debris floating down the Missouri River accumulated around the wreckage which created the island known as Cora Island.  Past efforts to deepen and channelize the Missouri River have led to a loss of habitat.  Cora Island was chosen as one of the recovery programs to restore habitat on the island.

An article on STL Today is located here: Answer to Missouri River flood control found in serene waters of Cora Island

Waterway Carwash Opening New Location on The Hill

Waterway Carwash is a long term client of Clayton Engineering. Recently, the company has been working with us to develop a new style washing station at a prime location on The Hill, in St. Louis. This will be Waterway’s first Tunnel Car wash facility, with vacuum stations, an automated tunnel car wash as well as the traditional hand wash and drying availability that their customers have come to love throughout the years. We’re excited to be on the design team for Waterway once again!


See the full St. Louis Business Journal article here: Waterway Carwash on The Hill


The First Known Large Scale Rainwater Harvesting System in St. Louis

Rainwater3The Webster Groves School District is constructing a large building addition onto their high school that proved opportune for an innovative civil design implementation by Clayton Engineering. Slated to be completed in late 2012, the first known large scale rainwater harvesting system in the St. Louis area has been designed, approved, and installed, through a collaborative effort by The Clayton Engineering Company and the Webster Groves High School project plumbing engineer, John Muschong,P.E. Due to the small site area, the underground rainwater harvesting system fit the school district’s goals for green solutions perfectly.

The St. Louis Metropolitan Sewer District (MSD) observes and maintains public sewer systems in the metropolitan area. Funding for MSD is provided through storm and sanitary sewer bills. MSD oversees and inspects new construction of public storm and sanitary sewers. With this particular BMP (Best Management Practice) design, no guidelines or design specifications were in place at the time. MSD observed the entire process so each detail could be used for future review and design guidelines.

The design of the rainwater harvesting system directly reflects the water quality treatment characteristics and environmental sustainability national agencies require.

Benefits of Rainwater Harvesting include:

  • Avoid increased sewer bill surcharges by minimizing run-off
  • Savings on local water bills
  • Runoff will be used for the benefit of site maintenance & irrigation rather than increasing the volume of local drainage systems
  • Available immediately for fire sprinkler systems
  • The system can reduce erosion
  • Grey water system use in buildings

Rainwater1For more advanced applications that include treatment for purification during periods of scarce rain and moisture accumulation when the harvesting system could be converted to normal water use.

The Webster Groves High School system includes a design for irrigation harvesting treatment and reuse on and around the property for irrigation systems. This system goes beyond the traditional water harvesting in that it captures more than just roof runoff. This approach was used to satisfy MSD requirements for water quality and runoff reduction for this project. The storm water is collected from the roof and around the school property through a series of traditional collection methods.

Once the water is collected, it is directed into the Hydrodynamic Separator (HDS) unit, which acts as a the Pre-Treatment, or “flow-through structure with a settling or separation unit to remove sediments and other pollutants (as defined by EPA fact sheet 832-F-99-017)”. The water harvesting system is considered a main water quality device at the school by including a decanting process as a function of its design. Decanting is the process of separating water from oils, chemicals or other sludges/ sediments that have accumulated during the runoff process. This is a necessary process for the re-use of rainwater to keep pumps and downstream systems working properly. Also, it is the second filtration process in this particular rainwater harvesting system since it will be used for a higher volume than an ordinary harvesting system-even more so than other commercial applications. The decanting process is achieved through a series of tanks where the water is internally “treated” then the sediments that precipitate to the bottom are regularly removed during normal maintenance procedures while the newly filtered water is pumped out of the tanks for use as needed.

Rainwater2During the winter months, the water harvesting system will be used to pump the treated storm water back into the storm sewer systems since the upstream HDS unit will have already pre-treated the runoff. The system is fully functional year round. With the design and implementation of this new system, The Clayton Engineering Company has maintained the civil engineering and design edge that’s needed to advance in the modern world. We ask that you please consider the world around you while planning your next major project, commercial development or even home upgrade and consider us as your personal design professionals.

B. Austin DeSain, LSIT, CST II
Erik J. Staley, P.E.