Southern good roads . HE AMERICAN ASSUCIATluN FOR HIGHWAY IMPROVEMENT IN WASHINGTON, D. C. NOVEMBER 22. IHIiJReading-From Left to Riprht : J. E. Pennybacker, E. L Corthell, Bryan Lathrop. Leonard , Franz Quedefeld, T. H- Child, Henn^n Jennings, John , Alfred Noble, W. D. Brown. James S. Harlan, C. G. Ambler, W. M. King, A. H. Blanchard, L. W. Page. S. A. Miles. George C. Diehl. J. C. Williams,R. W. Austin. W. W. Finley. 22 SOUTHERN GOOD ROADS January, 191i The Evolution of Corrugated Metal Culverts By MR. PERRl VAN HORNE. Canton, Ohio It is |)i- ihably not generally kno\\ii
Southern good roads . HE AMERICAN ASSUCIATluN FOR HIGHWAY IMPROVEMENT IN WASHINGTON, D. C. NOVEMBER 22. IHIiJReading-From Left to Riprht : J. E. Pennybacker, E. L Corthell, Bryan Lathrop. Leonard , Franz Quedefeld, T. H- Child, Henn^n Jennings, John , Alfred Noble, W. D. Brown. James S. Harlan, C. G. Ambler, W. M. King, A. H. Blanchard, L. W. Page. S. A. Miles. George C. Diehl. J. C. Williams,R. W. Austin. W. W. Finley. 22 SOUTHERN GOOD ROADS January, 191i The Evolution of Corrugated Metal Culverts By MR. PERRl VAN HORNE. Canton, Ohio It is |)i- ihably not generally kno\\ii. hut it is a factnevertheless, that c-orrugated metal culverts have beenin use in certain in the United States for overa quarter of a century. Originally they were made with cheapness para-mount, hence of very light gauge galvanized steel withno pretentions other than that of temporary, or at th(^best luicertaiu, longevity. ^Pany of these culverts havelong since disintegralod. the result of varving deter-. MR. PERRY VAN HORNE iorating elements if the earth in which tln-y were im-bedded; others, it is claiuMd. arc still in a fair stateof preservation. Ten years or more ago a (•(immendable tendency wasevidenced ou the part of various cnrriigated culvertmanufacturers to considei- tlie tuturc. They commenr-ed to operate in the lielief that cmrugated metal cul-verts, if made if the right thickness and of a (lualityof metal superior to galvanized steel, could reasonablybe expected to give practical and Lasting service. With this in vi. ^-[ for tiie largest, were adopted as afair standard. Still later experiments were commenced and havecontinually progressed t iward developing a metal ona commercial basis which should surpass steel andequal or excel, from tlie standpyint of anti-corrosivecharacteristics, the well-known old-time iron
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