Sandvik Equipment Helps Make Mall Greener
by Virginia Varela-Eyre, marketing manager Construction Americas Sandvik Construction
The National Mall in Washington D.C., one of the most popular tourist destinations in the USA, and site to presidential inaugurations and political rallies, is the country’s most visited park. With an estimated 24 million visitors a year walking on the grounds of The Mall, the soil has been so heavily trampled and compacted that grass has been hard to grow. The state of disrepair of this national symbol has long called for renovation of its grounds.
Stancills Inc. is a family owned and operated Maryland engineered soils manufacturing company located along the northern shores of the Chesapeake Bay. Founded in 1934 by G.L. Stancill, a farmer from North Carolina who ventured into the business of sand and gravel mining, Stancill started with a collection of material from gravel banks using only a shovel and a pickup truck. He funded his enterprise with savings from his four years of service in the Army.
In 1938, the company’s productivity grew dramatically when Stancill acquired his first mechanical shovel and by the time the Second World War broke out, G.L.’s service to his country came in the form of his business. During that time, Stancills Inc. came to be considered essential to the war effort.
As the business grew successfully, it went on to be operated by three of G.L.’s four sons. Today Stancills Inc. is run in partnership by G.L Stancill’s son Terry and Terry’s daughter Emlyn Stancill.
As the area grew, the market for construction materials became a very competitive one. Stancills Inc. needed a new strategy to stay ahead of the game. The demand for manufactured soil in the region, combined with environmental legislation requiring the use of specialized soils for storm water mitigation, made the engineered soils business a worthwhile choice.
Accordingly, they chose to diversify into that specialty and away from sand and gravel mining. This vision, combined with the attention to detail of customers’ current and future needs, allowed the new business model to thrive. It made Stancills Inc. the engineered soil supplier of choice within the region. Most recently, this company stature proved essential in winning the contract for the topsoil screening project at the National Mall.
The task of renovating the topsoil of one of the national symbols of the USA is not a minor one. The required material specification was very fine: 1/2-inch. This material needed to be sized out from the grounds, which, over time, had accumulated a considerable amount of debris and gravel. This kind of precision screening requires a very productive and reliable machine.
The Stancills chose the Sandvik QA440, a tracked unit which features Sandvik’s unique, revolutionary, patented Doublescreen technology. “We chose Sandvik because of the competitive pricing and the (unit’s) quality of course,” says Emlyn. “But most of all, we chose the Sandvik unit because of the excellent support received from Chris Quinn, from AES. His customer service (to us) has been essential. More than a salesman, he has felt like a member of our team.”
The Mall jobsite
The work involved feeding the stockpiled, excavated soil directly into the hopper with a loader. The QA440’s hopper can handle up to 14.8-square-yard and can be also fed from an excavator or another screener if so configured. In order to achieve the 1/2-inch final product size required, this machine was fitted with 2 and 1/2-inch square meshes. The top mesh screened out oversize material, which was abundant in this project.
The unit’s Doublescreen design allows for the two screen boxes to be tilted at different angles to one another for optimum efficiency. In this application, the first box was positioned at a very steep angle in order to quickly eliminate the oversized material. Because this technology is unique in the market, it makes this machine one of the most efficient and reliable mobile screeners available.
Additionally, the QA440 boasts an impressive 20-foot x 5-foot screening area with side and main conveyors designed for massive stockpiling capabilities of over 16-feet, 10-inches. This makes the QA440 ideal for demanding applications where production is key.
Because the unit is track mounted and self-propelled, it can be easily maneuvered within the site via remote control. That allows for easy movement and a quick start up for production in a different location. In this way, the QA440 is ideal for screening jobs where reliability, flexibility, mobility and high production are paramount. It was especially helpful on The Mall project as it is in other urban locations with restricted access.
Area Manager Chris Quinn, from Advanced Equipment, distributor for Sandvik mobile crushers and screeners in the Mid-Atlantic States, says: “Dealing with Terry and Emlyn has been an absolute pleasure. They were keen in getting the right equipment and working closely together with them in order to understand their needs has been essential. It gives me great joy to see how we have contributed to make their business prosper.”
For more information on Sandvik Construction, contact them at 404-589-2823 or e-mail: firstname.lastname@example.org.