Vibrartion mitigation, 1971
Vibrartion mitigation, 1971 |
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| To reduce noise both below and above ground, engineers placed layers of absorbent material below the tracks. In especially sensitive locations, they installed mattress-like “floating slabs” to further cushion the vibrations., Harry Weese and Associates and DeLeuw, Cather & Company, “WMATA Rapid Transit Development Program Directive Drawings,” 1968-1973, GWU. |
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