The literary digest . :-^r? !|d ? V r IPIP :J \Lh . ^ «f,7(.;., --i.^^ 4^..^> +^* ?* ^. , ; ,!,^t-ji tr , 81. ;, Ll! ill; ; LOOK at the graphic chart above—the figuresrepresent pounds per square inch necessaryto crush small cubes of concrete—an offi-cial test of concrete as mixed by different makesof mixers, from the same materials, under thesame conditions. delivers concrete of the dominant standard of mixed concrete is the strongest concrete. If you want your concrete mixed according to higheslengineering standards, favor the contractor who owns theKoehri
The literary digest . :-^r? !|d ? V r IPIP :J \Lh . ^ «f,7(.;., --i.^^ 4^..^> +^* ?* ^. , ; ,!,^t-ji tr , 81. ;, Ll! ill; ; LOOK at the graphic chart above—the figuresrepresent pounds per square inch necessaryto crush small cubes of concrete—an offi-cial test of concrete as mixed by different makesof mixers, from the same materials, under thesame conditions. delivers concrete of the dominant standard of mixed concrete is the strongest concrete. If you want your concrete mixed according to higheslengineering standards, favor the contractor who owns theKoehring Concrete Mixer. Write us for Van VlecksBook—an exposition of standards and tests in concreteconstruction as approved by official engineering societies. Concrete 31% stronger, or 31% weaker—thats the possible variation if you areindifferent as to what concrete mixer doesyour work. Doesnt 31^ stronger concrete justifyyou in departing from the strictly low bid basis of awarding your contract—in favoring thecontractor whose concrete mixer has been selected,not on low price but on its ability to produce con-c
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