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 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.

Avoiding ADA Lawsuits On Your Property (2010 ADA Guidelines)

ADA ParkingAs you may know, the Americans with Disabilties Act (ADA) was signed into law on July 26, 1990. The ADA has been credited with removing barriers for millions of disabled people, allowing them access to jobs and public buildings. When enacted into law however, Congress did not assign regulators to enforce the law, therefore leaving an explosion of private ADA litigation. Many have called the recent litigation ‘drive-by lawsuits’, using handheld GPS equipment to determine, for example, accessible slopes.

The St. Louis area is not immune to the widespread litigation affecting many private property and business owners. In fact, one recent lawsuit against a national convenient store chain was settled for $1.5 million in compensatory damages in an effort to make it’s stores accessible. Local business owners may be unaware that their stores are non-compliant due to new recent amendments published in the federal register on September 15, 2010.

The new guidelines layout the scoping and technical requirements for new construction and alterations and are available online at Further, standards for state and local government differ from those of the public and commercial facilities. The new guidelines will take affect March 15, 2012 and may have a direct impact in compliance of existing facilities as well as design of new developments.

While many business owners believe their buildings were grandfathered in prior to the 1990 regulations, this may not be the case and you could possibly be subject to the 2010 guidelines. While some of the new guidelines pertain to interior building space, many of the regulations will affect your site. As your professional engineer, Clayton Engineering can guide you through the maze of technical documentation as well as determine if your existing site will be in compliance with the new amendment.

Clayton Engineering has developed a comprehensive team of professionals to provide you with a solution to these issues and help you avoid a potential lawsuit. We have the capability to work with local architects for interior building space as well as site solutions.

Many business owners look at ADA regulations as just a building code, while in reality it is actually a civil rights law. There are substantial differences between building codes and the Department of Justice’s ADA requirements. A design plan receiving city approval may not necessarily be in compliance with ADA regulations. This lack of design strategy could ultimately lead to a federal lawsuit.

As your design professional, we will help you avoid these possible lawsuits and be happy to answer any questions you may have about the process.

Click here to download the ADA brochure

Clayton Engineering becomes donator to the Smithsonian Institution

Smithsonian1The Clayton Engineering Co., located in St. Louis, Missouri, was officially formed in 1926, but records, field books and a few original equipment items purchased from previous companies date back to the early 1800s.

While purging items last winter, Austin DeSain was going through some old boxes and found a wooden case labeled “C.L. Berger & Sons, Boston, Massachusetts,” aka, “the Find.” The transit-theodolite found its way onto our shelves nearly a century ago from a surveyor who was hired on the condition that he used his own equipment. The transit was last serviced on November 14, 1931, by the Sprengnether Instrument Co. in St. Louis. Shortly thereafter, it was replaced with the K&E style instrument and eventually the Wild Heerbrugg T1, T2, T3, etc.

Austin began researching “the Find” by contacting land-surveying historians and museums trying to collect information. Several private collectors and museums were helpful in trying to identify the specific model, although none were absolutely certain. Austin received copies of the original instrument brochure and catalogs from several of the collectors. By using the brochures and catalog drawings, he was able to pin-point the model, a No. 11c Complete Transit-Theodolite. The model, equipped with four leveling screws, was listed on page 213 of the 1918 “Standard Instruments of Precision” catalog for a steal at only $300.

Realizing that most of the people Austin contacted wanted to actually have the instrument for their own collections, he explained to our company board the instrument’s significance. Due to it’s historical interest we decided to display the instrument in our lobby. A great “Find.” However, the most interesting response Austin received was from the curator of the Physical Sciences Collection at the Smithsonian National Museum of American History. The Smithsonian had a copy of the shop records for C.L. Berger & Sons and immediately mailed a copy of the original sales receipt for the exact model – matching serial number and specifications – before the end of the day. Among the scribbling on the original receipt, it’s clearly stated “Inst. No. 14244, Transit No. 11 – Theodolite, to be shipped to Spregnether Inst. Co., St. Louis, Mo.” – Jan. 30, 1923.” As it turns out our instrument was a perfect match for their collection of surveying and geodesy apparatus.

After a few months of correspondence, the transit was packaged and sent to the Smithsonian in Washington, D.C. to care for and display. It is a true honor for both The Clayton Engineering Co. and Austin to have the opportunity to present this small gift to the nation.

Clayton Engineering’s Survey Department Purchases Trimble Tablet

trimbleThe Clayton Engineering Company located in St. Louis, MO began this year with a new equipment purchase for our field crews. This tablet is the very latest product to be released by Trimble and is without a doubt, the most advanced field surveying technology available on the market. The Trimble Rugged Tablet PC is a Survey data collector, a powerful tablet computer, GPS receiver and a lot more. Clayton Engineering, with the guidance and support from Seiler Instrument Company here in St. Louis was able to add this piece of field equipment to our arsenal of already “tough” technology.

The addition of the Trimble Tablet this year was not an easy decision, as with any new equipment purchase. Over the last ten years, this industry has been introduced to an ever increasing number of available field and office hardware, software and all around technological advances. We have always had a good history with Trimble’s products, Geodimeter and Spectra before and even before that, K&E, Wild and Berger. With nearly a century of productive history here in the St. Louis area, this company has had plenty of opportunities to test civil engineering and land surveying hardware and software for their versatility, durability and functionality. A history like this reflects a pattern of manufacturers and distributors, types of equipment and software that have consistently produced excellent products catered exactly to the needs of a company like Clayton Engineering. In this instance, although several other items were researched and even test driven extensively, the Trimble Rugged Tablet PC is the only new piece of field equipment that more than exceeds all of the requirements we were looking for. One major deciding factor was the tablet’s capability to work with all of our old and even some out-dated instruments while still promising streamlined performance with current and future field equipment.

The tablet is an extremely powerful computer by office standards, let alone in the field. It runs a Windows 7 operating system, capable of handling multiple programs at the same time like AutoCAD, Trimble Access and Internet Explorer with hardly any lag or slow-down time. The tablet’s hard drive is solid state (like an SD card), providing for a near zero read-time from application to application. The expansion bays provide for additional feature options like a cell-modem for non-stop net connections, like the one we frequently use in conjunction with the MODOT RTK-Network. With the SD slot, dual USB slots, IO plug, on-board GPS, headphone and microphone jacks and all of the other features mentioned, this field computer is much more than survey data collector.

It is the toughest and most rugged tablet PC currently on the market. It’s water resistant, durable enough for daily use on a construction site, temperature resistant to extremes in both directions and the 7”LCD screen is extremely user friendly for regular and irregular surveying, under any conditions. Prior to this, Clayton Engineering used the Trimble ACUs with Survey Controller software. Thankfully, with Trimble Access there is virtually no learning curve for the crews. They were able to use the tablet for all types of surveying almost immediately. Trimble Access is the evolved version of Survey Controller and much more powerful while easier to use in the field. The tablet works great in conjunction with all of our in-house proprietary software as well. All of the new features, and the quickness of the processing only meant that there are easier and faster ways to do complete the necessary tasks. Also, like the previous Trimble collectors, she talks to you!

Seiler Instruments has again provided The Clayton Engineering Company with the opportunity to be the frontrunner in the field crew technology area of land surveying and civil engineering. The company’s long standing history has proven that with the industry’s newest most cutting edge technology in our hands, we can maintain a very strong competitive advantage and provide the most accurate, precise and efficient final product for every one of our clients.