Abstract: An internal aircell inside a first flexible structural cover of a structural air-beam used in air supported supports such as tents is connected to the internal aircell of an adjacent air-beam by means of an air-beam aircell communicating airflow port assembly attached between said aircells through a cooperating structural cover port aperture in the structural cover. The airflow port assembly allows communicating airflow between the connected aircells forming an integral air volume for inflation and deflation through a single inflation point.

Abstract: A structural air beam support leg including an anchoring weight baffle pocket assembly is incorporated into the lower leg portion of an air beam that is the principal component of the support leg. The pocket assembly receives and retains anchoring weight bags or other weights internal to the lower portion of said support leg.

Abstract: A plurality of closable and removable containment berm wall supports are preferably each made from three flexible coated fabric layers and preferably each wall support incorporates three reinforcing members and incorporates a closure means that selectively can close the support into a closed triangular frame. Each berm wall support is designed to cooperate with a sleeve attached to a flexible sidewall of a containment berm unit and when the wall support is in a closed condition to hold the sidewall in an erected condition and when the wall support is in an open condition to allow the sidewall to assume a let down condition. The let down condition allows a wheeled vehicle or other object to conveniently transit over the wall for placement on a floor of the containment berm unit within the perimeter established by the sidewall.

Abstract: A plurality of closable and removable containment berm wall supports are preferably each made from three flexible coated fabric layers and preferably each wall support incorporates three reinforcing members and incorporates a closure means that selectively can close the support into a closed triangular frame. Each berm wall support is designed to cooperate with a sleeve attached to a flexible sidewall of a containment berm unit and when the wall support is in a closed condition to hold the sidewall in an erected condition and when the wall support is in an open condition to allow the sidewall to assume a let down condition. The let down condition allows a wheeled vehicle or other object to conveniently transit over the wall for placement on a floor of the containment berm unit within the perimeter established by the sidewall.