TWO WAYS TO BUILD SUBWAY STATIONS

THE BAY AREA RAPID TRANSIT SYSTEM IS USING TWO DIFFERENT UNDERGROUND CONSTRUCTION METHODS AT THE MONTGOMERY ST. AND POWELL ST. STATIONS. BOTH STATIONS WILL BE SIMILAR WITH ALMOST THE SAME DIMENSIONS AND VOLUME OF DIRT TO BE EXCAVATED. AT POWELL ST., THE CONTRACTOR IS COMPLETING THE 30-INCH CONCRETE WALL AROUND THE STATION BEFORE BEGINNING THE MAJOR EXCAVATION. IT ELIMINATES THE NECESSITY OF DEWATERING. AT MONTGOMERY ST., THE CONTRACTOR ELECTED TO HOLD THE WALLS OF THE EXCAVATION WITH SOLDIER PILES AND TIMBER LAGGING. HE HAD TO DEWATER AND UNDERPIN 11 BUILDINGS, BUT HE COULD START MOVING DIRT EARLY. DESCRIBED ALSO IS THE EQUIPMENT USED BY BOTH CONTRACTORS.

  • Supplemental Notes:
    • Vol 112, No 3, PP8-10, 5 PHOT
  • Publication Date: 1968-6

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  • Accession Number: 00215106
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 12 1994 12:00AM