Arctic Foundations, Inc.

2007-32-2 Kotzebue, AK - Maniilaq Health Ctr

2006-14-3 Nunam Iqua, AK - K-12 School

2005-51-1 Unalakleet, AK - Bulk Fuel Upgrade

2004-29-2 Kotzebue, AK - NW Arctic Heritage Ctr

2005-21 Kwigillingok, AK - Deltanet Tower

2005-17-2 Chandalar, AK - Heavy Equip Shop

NWT Canada - Ekati Diamond Mine/Outlet Dam

2006-14-1 Nunam Iqua, AK - K-12 School

2004-29-1 Kotzebue, AK - NW Arctic Heritage Ctr

2007-27 Prudhoe Bay, AK - Schlumberger Gun Shop

2003-13 Fairbanks, AK - UAF Geist Rd Entrance

1999-26 Barrow, AK - Main Post Office

1989-15 Gakona, AK - Tower

2005-17-1 Chandalar, AK - Heavy Equip Shop

2006-14-2 Nunam Iqua, AK - K-12 School

1996-22 Wainwright, AK - Washeteria

2005-39-2 Denali, AK - Canyon Lodge WW Trtmt Plant

2005-39-3 Denali, AK - Canyon Lodge WW Trtmt Plant

1990-12-1 Bethel, AK - DOT Road

2007-28-2 Kyrgystan - Kumtor Mine Portal

Permafrost

Permafrost is any soil or rock maintained at or below 0 degrees C for a minimum of two years. As long as more heat is removed than is added, a permafrost mass will be maintained. AFI's two-phase thermosyphons operate when the condenser is colder than the liquid in the evaporator or when the air is colder than the ground.

Thermal design of a foundation to maintain permafrost must extract the heat from the building or seasonal thaw from above, geothermal heat from below, heat from warmer soils surrounding the site, buried water and sewer lines, runoff from building roofs, and surface drainage. The design must also allow for seasonal thaw without affecting the foundation.