A drainage device for use under the floor of a building to facilitate drainage of water along a foundation of the building under the floor. A bridge drainage device permits more rapid installation of the drainage devices. The bridge device can be used to bridge between two drainage devices so that it is not necessary to cut the drainage devices precisely to fit on a footing of any selected length.

A drainage device for use under the floor of a building to facilitate drainage of water along a foundation of the building under the floor. A bridge drainage device permits more rapid installation of the drainage devices. The bridge device can be used to bridge between two drainage devices so that it is not necessary to cut the drainage devices precisely to fit on a footing of any selected length.

A portable cofferdam system for isolating a working area from water such as a culvert. The portable cofferdam system generally includes a first sidewall and a second sidewall each having an interior side, an exterior side, an upper edge, a lower edge and a rear edge. A middle wall is connected to the sidewalls opposite of the rear edges of the sidewalls forming a substantially U-shaped structure. An opening formed between the rear edges of the first sidewall and the second sidewall to allow for positioning about or near the inlet of an object or area to be kept dry such as the inlet of a culvert.

A portable cofferdam system for isolating a working area from water such as a culvert. The portable cofferdam system generally includes a first sidewall and a second sidewall each having an interior side, an exterior side, an upper edge, a lower edge and a rear edge. A middle wall is connected to the sidewalls opposite of the rear edges of the sidewalls forming a substantially U-shaped structure. An opening formed between the rear edges of the first sidewall and the second sidewall to allow for positioning about or near the inlet of an object or area to be kept dry such as the inlet of a culvert.

System and means soil stabilization and moisture control for building foundations including methods and systems for stabilization moisture in a site for building foundation by applying soil moisture stabilization material in various forms, a preferred stabilization material being a mixture of aluminosilicate Pozzolan mineral and granular material such as sand.

System and means soil stabilization and moisture control for building foundations including methods and systems for stabilization moisture in a site for building foundation by applying soil moisture stabilization material in various forms, a preferred stabilization material being a mixture of aluminosilicate Pozzolan mineral and granular material such as sand.

A frost removal system is for thawing frozen ground and a method removes frost from a selected area of frozen ground. The method can include providing at least one heat transfer device; auguring a hole into the frozen ground to at least a depth of the frost. The at least one heat transfer device is lowered into the selected area of frozen ground and self-augured to the predetermined depth. The at least one heat transfer device is heated and the heat is allowed to travel along a length of the at least one heat transfer device. Heat is applied from the at least one heat transfer device for thawing the selected area of frozen ground until the frost is removed. The removal system may also be used to remove moisture from saturated soil and to bake columns of soil with increased load-bearing capacity.

A frost removal system is for thawing frozen ground and a method removes frost from a selected area of frozen ground. The method can include providing at least one heat transfer device; auguring a hole into the frozen ground to at least a depth of the frost. The at least one heat transfer device is lowered into the selected area of frozen ground and self-augured to the predetermined depth. The at least one heat transfer device is heated and the heat is allowed to travel along a length of the at least one heat transfer device. Heat is applied from the at least one heat transfer device for thawing the selected area of frozen ground until the frost is removed. The removal system may also be used to remove moisture from saturated soil and to bake columns of soil with increased load-bearing capacity.

A portable cofferdam system for isolating a working area from water such as a culvert. The portable cofferdam system generally includes a first sidewall and a second sidewall each having an interior side, an exterior side, an upper edge, a lower edge and a rear edge. A middle wall is connected to the sidewalls opposite of the rear edges of the sidewalls forming a substantially U-shaped structure. An opening formed between the rear edges of the first sidewall and the second sidewall to allow for positioning about or near the inlet of an object or area to be kept dry such as the inlet of a culvert.

A portable cofferdam system for isolating a working area from water such as a culvert. The portable cofferdam system generally includes a first sidewall and a second sidewall each having an interior side, an exterior side, an upper edge, a lower edge and a rear edge. A middle wall is connected to the sidewalls opposite of the rear edges of the sidewalls forming a substantially U-shaped structure. An opening formed between the rear edges of the first sidewall and the second sidewall to allow for positioning about or near the inlet of an object or area to be kept dry such as the inlet of a culvert.