San Francisco : Architect and Engineer, Inc · leaf 89
de as the motor trucks pass over the pavement. Forty motor trucks are now oi)erating over the test highway, twentygoing in each direction. The reading sheets will be filed daily, which will give a ])erfect record ofslab and subgrade deflection throughout the entire test. It is believed that these… … MODEL OF TEST HIGHWAY The man is holding two pieces of reinforcing steel of 70,000 lbs. tensile strength. Several sectionsof the track are reinforced with this steel.
Architecture · Building
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