. Architect and engineer. head Road. One of manyerected by the California High%vay Commission. Right: Plan of 30 foot metal crib wallshown in accompanying photo. prove ineffective. The remedy is found ina careful survey of the moving area andjust above it to locate the imprisoned water,followed by the installation of deep drainsof perforated pipe surounded by coarsegravel or other pervious material. Numer-ous slides of destructive character have beenremedied in this way. When this has beenaccomplished a metal crib wall may befound appropriate to maintain the lower cribbing members will be foun
. Architect and engineer. head Road. One of manyerected by the California High%vay Commission. Right: Plan of 30 foot metal crib wallshown in accompanying photo. prove ineffective. The remedy is found ina careful survey of the moving area andjust above it to locate the imprisoned water,followed by the installation of deep drainsof perforated pipe surounded by coarsegravel or other pervious material. Numer-ous slides of destructive character have beenremedied in this way. When this has beenaccomplished a metal crib wall may befound appropriate to maintain the lower cribbing members will be found to be lessthan those of suitable alternate others the immediate cost of the mem-bers may be somewhat greater, but analysisof all the costs involved, including freight,hauling, breakage and installation—that is,the costs of the completed work—will showeconomies resulting from the use of themetal quite sufficient to justify its employ-ment. THE ARCHITECT AND ENGINEER ^ 39 ? AUGUST, NINETEEN THIRTY-THREE. ffm\ =:^^^.^-?^*;^ AA
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