A support structure for elevating a building surface above a fixed surface having stability bracing to provide increased stability to the structure. Delivery of the powder mixture is activated during brushing or through manually depressing the brushes cover. The second flat-plate portion is connected to a projecting end of the leg portion. The second well has a conductivity type opposite to a conductivity type of the first well and has a depth greater than a depth of the first well. The annular film electrodes are substantially arranged on a common plane and face the electrified balls.