Abstract: Testing apparatus and methods are described for determining required vacuum characteristics of a radon evacuation system, wherein the radon evacuation system is of a type which utilizes floor vent holes in a basement floor to evacuate radon from beneath the basement floor. The preferred embodiment comprises an elongated vacuum tube extending from a floor vent hole to a variable vacuum test source. Pressure and air velocity measurement devices are positioned to determine actual static pressure and air flow rate within the vacuum tube. To determine the minimum vacuum required at the floor vent hole, the vacuum test source is adjusted to produce the lowest vacuum which will maintain a negative pressure in nearby test holes. The corresponding static pressure and air flow rate are then noted from the measurement devices.

Abstract: A half slotted container having side walls formed by outer side walls and reinforcing panels which are extensions from the upper edges of the outer side walls. The extensions fold over, are adhered to and contiguous with the side walls to form a double wall extending the entire height of the container to reinforce the container.

Abstract: A container which has integral reinforcing panels and a divider panel and is formed from a unitary blank.