What is fpsf

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Powered by CITE. Do Not Send. Distributed News Service. As noted above, FPSF technology uses foam-plastic insulation strategically placed around the outside of a concrete foundation. The FPSF foundation installed in this affordable, multi-family building raises the local frost depth from 52 inches to just inches.

In addition, the vertical foam-plastic insulation also serves as sheathing for concrete formwork to cast the slab. Note that horizontal wing insulation may not be required in moderately cold climates. For unheated buildings or portions of buildings , additional ground insulation is placed under the entire slab to conserve and use only geothermal heat for the same purpose Figure 6.

Figure 6. Choosing to build with frost-protected shallow foundation in cold-winter areas can generate several important benefits for builders and homeowners:. This standard provides for various design and construction strategies, and includes a commentary explaining the history and basis of the technology. ASTM C , Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation , is the standard covering the types, physical properties, and dimensions of cellular polystyrene intended for use as thermal insulation in the United States.

The ASCE 32 standard also specifies required compressive strengths or density for the insulation when used in applications where foundation loads are supported. When specified in accordance with these codes and standards, rigid foam plastic insulations have provided reliable long-term performance below ground for a variety of building and infrastructure applications.

For those locations or if the planned construction site is not located nearby a station that has AFI data, using a combination of the AFI map and the most representative city s AFI value s is advisable. Maps Temperature data from 5, stations were used to interpolate the year return period of the AFI for the continental United States.

The data table publication contains a station inventory and a list of stations with the specific year return period value located in the far right column. Other columns in the table contain lesser return periods and are listed for comparison purposes or other applications. Use only the year return period in this publication for FPSF. The publication below contains the methodology used to create the year return period of the AFI for the period.

The data tables contain the actual year return period AFI values for these cities.