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To the Licensed Professional Engineer and Architect...

What’s in a Name? Everything – when it’s
your name accompanied by your professional seal attesting to the quality of your design. You are assuring your client that your design is compliant with all applicable codes, standards, and regulations, and further that it incorporates accepted engineering practices. In essence, you are saying “I guarantee it!

At Barger And Sons, we understand the impact of our precast tank products on your professional reputation. That’s why we take special measures to assist and protect you, to protect the environment, and to assure your client’s total satisfaction. Let’s take a look at just a few of those measures.

Grease Traps
Almost all grease traps are installed in paved areas that experience traffic loading, even heavy loads created by large trucks making deliveries. The applicable standard required by many states and municipalities, H-20 Traffic Rated, is defined in the American Association of State Highway and Transportation Officials (AASHTO) document "Highway Bridge Loading", which defines the loads to be used in calculating the various forces that a grease trap may experience. That is why Barger And Sons grease trap designs are analyzed and certified by a licensed professional structural engineer to fully meet H-20 requirements. Key to successful implementation of our engineered H-20 design is incorporation of a rebar framework that is carefully assembled and consistently placed in the tank walls. Barger And Sons is the only manufacturer of H-20 traffic rated grease traps in Tennessee.

Even a structurally sound grease trap can fail at its primary purpose if not well constructed, resulting in significant adverse impacts to municipal sewer systems and to the environment. Two critical design factors govern long-term successful performance of grease traps. First, the tank must be watertight to eliminate inflow and infiltration. Both the sealant used during tank assembly and assembly methods are determinants of whether the tank will be water tight. Use of ASTM C990 sealant and proven application methods has enabled Barger And Sons to demonstrate long-term water tight performance of our tanks. The second critical design factor relates to the internal tank baffle that separates grease from the tank effluent. Most manufacturers use baffles that are merely inserts and prone to failure. Barger And Sons tank baffles are monolithic and integral to the tank walls – they do not fail!

Septic Pump Tanks
Many large residential developments are now being placed outside the bounds of municipal sewer systems, requiring an engineer to design a system comprised of septic pump tanks and a local sewage treatment plant specifically for each development. System capacity requirements are determined based on the expected number and size of homes in the development. It is imperative that such systems be watertight to prevent groundwater inflow and infiltration. Studies conducted by Barger And Sons in real world installations have shown that groundwater inflow and infiltration in systems that are not watertight can be significant in comparison to the waste volume entering the system. The increased overall volume resulting from such inflow and infiltration can far exceed the design capacity of both the pump tanks and the treatment plant, resulting in failure of system, damage to the environment, and damage to the engineer’s reputation. Needless to say, the engineer then has an unhappy client and significant problems to resolve. The structural integrity and design features of our septic pump tanks, coupled with the quality of our manufacturing and assembly methods, enables Barger And Sons to guarantee that our tanks are watertight and will provide long-term performance. Specifying a Barger And Sons watertight septic pump tank affords the design engineer confidence that the resulting system will function as planned. That confidence can then be expressed by certifying and placing the engineer’s personal seal on the design.

Tank Manufacturing Methods – the Key to Success
An engineered tank design must be complemented by consistent, proven manufacturing methods to assure tank performance. Barger And Sons is unique among all East Tennessee tank manufacturers in that our manufacturing plant is certified to the high quality standards of the National Precast Concrete Association (NPCA). To achieve this certification, our plant underwent a rigorous evaluation by licensed professional engineers, who looked at our manufacturing and testing methods, our operator certifications, our worker training, and our work flow processes. To maintain the certification, we are audited at least annually by licensed professional engineers – these audits occur at random and are unannounced, resulting in a true assessment of our day-to-day manufacturing practices. As the only NPCA certified tank manufacturer in East Tennessee, Barger And Sons produces tanks that always meet your specifications.

Design Drawings
Barger And Sons is proud of our tank designs. To assist you, we make all of our designs available to you in AutoCad format on request.

Prudent Steps You Should Take to Ensure Success of Your Designs
1. Specify the use of H-20 traffic rated grease traps
2. Specify use of monolithic baffles in tanks
3. Specify use of ASTM C990 sealant and proven application methods
4. Specify use of tanks manufactured in an NPCA certified plant

Barger And Sons Tanks – Protecting Your Professional Reputation, the Environment, and Assuring Your Client’s Satisfaction!