San Francisco : Architect and Engineer, Inc · leaf 118
Fig. 4—Workings of the ground dwelling termites. All show the earthyfrass characteristic of the subterranean termites. Note the similarity inappearance to the work of the powder-post beetle, fig. 2, at right. THE ARCHITKCl AND ENGINEER ^ 44 ► MAY, NINETEEN THIRTY-FOUR Engineerins and Buildins… … FOUR AIRPLANES CIRCLE ABOVE THE STEAD-ILY RISING COLUMNS OF TOWER 2 OF THE SANFRANCISCO-OAKLAND BAY BRIDGE WHICH, INTHIS PICTURE. WERE APPROXIMATELY 200FEET HIGH. THE FOUR AIRPLANES CAN BE SEEN DIRECT-LY OVER THE TOWER. THE MAXIMUM DISTANCE BETWEEN THESETWO TOWER SHAFTS IS 66 FEET AT THE…
Architecture · Building
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