On a cost per bushel basis, Quick-Zip bean and grain storage buildings give you very economical storage. No bolts and no bolt holes ensure air tight and waterproof seams.     Various grade beam heights, arch profiles, end walls, door openings, partitions and aeration/unloading ports are available.     In addition to the low cost per bushel, another big advantage is the building can be used to store equipment when it isnât being used to store grain.