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Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more- costly foundation in cold regions with seasonal ground freezing and the potential for frost heaving. The effect of heat from the building is magnified when insulation is strategically placed around the foundation. Frost protection of an insulated foundation also works for an unheated building by conserving ground geothermal heat beneath the building. Unheated areas of homes, such as garages, may be constructed using this manner. Slab on grade FPSFs can be installed with one placement of concrete, eliminating multiple inspections and speeding construction time. The method may also be used effectively with walkout basements by insulating the foundation on the downhill side of the house. Frost protected shallow foundations are also useful for remodeling projects because their installation minimizes site disturbance. In addition to residential, commercial and agricultural buildings, the technology has been applied to highways, dams, underground utilities, railroads and earth embankments. At LiteForm, our success is heavily relied upon by the success of the projects designed using our forms. Our FPSFs are below several sound structures in the area and are enduring the harsh Siouxland winters without fail. LiteForm has one of the longest track records of creating value, applying a breadth of construction expertise across a wide range of projects around the globe. We demonstrate this expertise and commitment in every project.

Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation

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Page 1: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation

Frost Protected Shallow Foundations

A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation in cold regions with seasonal ground freezing and the potential for frost heaving.

The effect of heat from the building is magnified when insulation is strategically placed around the foundation. Frost protection of an insulated foundation also works for an unheated building by conserving ground geothermal heat beneath the building. Unheated areas of homes, such as garages, may be constructed using this manner.

Slab on grade FPSFs can be installed with one placement of concrete, eliminating multiple inspections and speeding construction time. The method may also be used effectively with walkout basements by insulating the foundation on the downhill side of the house. Frost protected shallow foundations are also useful for remodeling projects because their installation minimizes site disturbance. In addition to residential, commercial and agricultural buildings, the technology has been applied to highways, dams, underground utilities, railroads and earth embankments.

At LiteForm, our success is heavily relied upon by the success of the projects designed using our forms. Our FPSFs are below several sound structures in the area and are enduring the harsh Siouxland winters without fail.

LiteForm has one of the longest track records of creating value, applying a breadth of construction expertise across a wide range of projects around the globe. We demonstrate this expertise and commitment in every project.

Page 2: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation

Kingsley, Iowa

This family made the decision to utilize today’s material with today’s technology. Our Frost Protected Shallow Foundation was used on the garage as well as the walk-out basement.

In doing so, this allowed the builder to construct a structurally sound foundation at a lower cost as FPSFs require less excavation, lower labor costs and less concrete. We estimate about $4,000 in initial savings when you figure forms, concrete, time and labor costs. FPSFs also provide an opportunity for increased savings because their insulation value.

Page 3: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation
Page 4: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation
Page 5: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation
Page 6: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation

Siouxland Freedom Park

LiteForm was involved in the construction of Freedom Park. In the heart of Siouxland along the banks of the Missouri River on 55 acres of land, Freedom Park is located close to the place where nearly 12,000 visitors experienced The Wall That Heals in 2007 and just across the water from the widely known Floyd Monument, in full view of the river’s bluff.

As a miniature replica of the Vietnam Wall in Washington, D.C., this wall is both pitched and angled in each direction. The LiteForm was cut to the exact angle and set in place on a frost protected footing that was also designed by LiteForm Technologies. LiteForm’s FlexxBoard 25 is a 2-inch high density Rigid Foam Board that insulates the ground and does not allow frost to reach the surface, thereby preventing heaving and cracking of concrete.

Page 7: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation

South Sioux City Theater Wall

In 2015 The City of South Sioux City wanted to install a permanent 40’x50’ movie screen near the riverfront. Outdoor movies had been shown on a temporary screen in the past and proved to be very popular. A stage was also built for live music and shows.

The LiteForm Tilt system was used to erect the theater. Panels were site cast, cured and “tilted” in place sitting on frost protected footings that were also designed by LiteForm Technologies. FPSFs have proven that they insulate the ground and do not allow frost to reach the surface, thereby preventing heaving and cracking of concrete. The ground is effectively shielded in the winter time from freezing below the forms.

Page 8: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation

Miracle League Sioux City

The Miracle League of Sioux City Baseball Field and Inclusive Playground provides fun and exciting opportunities to people with disabilities, and provides access to a safe playground for all Siouxland children.

While designing the field and playground in Sioux City, IA, the designers had to consider all physical needs of children with disabilities and barriers had to be limited or removed to ensure the safety of these children. Part of this design included utilizing LiteForm’s FlexxBoard 25 which, acts as a thermal barrier and doesn’t allow the ground below to freeze causing the concrete to heave and crack. This prevents any possibilities of trip hazards for the ballplayers and their families. Essentially, LiteFormproducts trick the ground below it into thinking it is located in Arizona year around, bonding directly to concrete resulting in a stronger, more durable insulation that will not rot or deteriorate when exposed to natural elements.

Page 9: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation

University of South Dakota

When Lance Anderson won the bid for the new building at the Outdoor Track and Soccer Complex for the University of South Dakota, his plans called for the use of Frost Protected Shallow Foundations from LiteForm. Utilizing FPSFs allowed Lance to construct a structurally sound foundation that was significantly less costly than a conventional foundation.

The heat from buildings is magnified when insulation is placed around the foundation. Frost protection of an insulated foundation also works for an unheated building by conserving ground geothermal heat beneath the building. In following the detailed design procedure for unheated buildings, you have flexibility to increase foundation depths to reduce horizontal ground insulation requirements, which is what Lance did on this project.

Page 10: Frost Protected Shallow Foundations - LiteForm · Frost Protected Shallow Foundations A frost protected shallow foundation is a practical alternative to a deeper, more-costly foundation

Frost Protected Shallow Foundations

The following figure illustrates the parameters for design of FPSFs in unheated buildings.

The International Residential code (IRC) includes prescriptive methods for constructing frost protected shallow foundations in heated buildings. By the IRC reference to ASCE 32-01 (American Society of Civil engineers, Design and construction of Frost-Protected Shallow Foundations, 2001), FPSFs in semi-heated and unheated buildings that meet the requirements of the IRC may also be designed and constructed.

ReferencesAmerican Society of Civil Engineers, SEO/ASCE 32-01, Design and Construction of Frost-Protected Shallow Foundations, 2001.National Association of Home Builders