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1.31 bar broke 18 gagex 620 bar broke 75 wire permanently Altho Animal Husbandry Asst Bacteriology band steel bars permanently stretched broke out crushed Chief in Soil coarse sand commercial mold formed concrete fence posts concrete posts cross section crushed N0 deﬂection Field Experiments ﬁlled ﬁlling ﬁrst ﬁve form a post gage galvanized sheet Ground Post Def inch square bar inch square twisted inﬂuence Iowa State College J. B. DAVIDSON line top inches Max Mold Post number of posts permanently stretched N0 Ph.D Plant Pathology Pomology portland cement post Fig Post mold gang post of triangular Post Testing Machine posts reinforced posts show sample post seven types shaped sheet metal shown in ﬁg Soil Chemistry Soil Surveyor spacers square inch square twisted bars tensile strength testing the posts triangular post types of posts W. H. Stevenson wire broke wire permanently stretched wooden forms wooden molds