603.3(c) 603.4(e) each side of each arch in the case of a multiple installation. Compact with mechanical tampers until a power roller may be used, then place the remainder of the embankment, as specified in Section 206.3. When filling around and over arches, before endwalls are constructed, place the first fill material midway between the arch ends, forming as narrow a ramp as possible until the top is reached. Build the ramp evenly from both sides, compacting fill material while placing it. After the ramps have been built to the arch top, deposit the remainder of fill material from the top, in both directions, from the center to the ends, as evenly as possible on both sides. If endwalls are built before any fill material is placed around and over the arch, place fill material adjacent to one endwall until the arch top is reached, then dump fill material from the top toward the other endwall, using care to deposit material evenly on both sides of the arch. For a multiple installation, follow the procedure specified above, but bring material up evenly on each side of each arch, avoiding unequal pressure. Tamp the fill material thoroughly, but not excessively. Do not puddle the material with water. Remove fill material causing excessive distortion of plates. Brace plates into correct position, then replace fill material. Remove bracing, as directed. Conform to additional requirements from the manufacturers.
603.4MEASUREMENT AND PAYMENT —
Measured along the centerline of culverts with square or skewed vertical ends; the average length along the centerline of culvert with square or skewed beveled ends. Bedding, backfill, concrete paving, if indicated, and inspection of culverts, including personnel and equipment, is incidental.
Measured along the centerline of culverts with square or skewed vertical end; the average length along the centerline of culverts with square or skewed beveled ends.
For the class indicated.
The unit price does not include concrete paving, if indicated.
604.1 604.2(a)
604.1DESCRIPTION —This work is construction of combination storm sewer and underdrain.
604.2MATERIAL —
1.a General. When indicated provide a minimum water inlet area of 1.4 square inches per linear