Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 8
s extending vertically through the blocks, the cavitiesof each row being located opposite the intervals between those of the adjacentrow, one of the rows having at both ends a half-length cavity. 7. A concrete building-block having a plurality of longitudinal rows olvertical air cavities, the… … Showing the Perpendicular Columns of Staggered Air Chambersin a Miracle Wall. BUILDER SAVES MONEY. The first vital question that flashes across the mind of thebuilder, is the cost. How much can I save by using concreteblocks?* The answer is, 20 per cent., and he will get a muchbetter and more…
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