Common use of Minimum Depths Clause in Contracts

Minimum Depths. Minimum cover required in the placement of conduit shall be 42 inches, except in the following instances: The minimum cover in borrow ditches adjacent to roads, highways, railroads and interstates shall be 48 inches below the clean-out line or existing grade, whichever is greater. The minimum cover across streams, river washes and other waterways shall be 48 inches below the clean-out line or existing grade, whichever is greater. Where conduit crosses railroads, the conduit shall be placed at a minimum depth of 60 inches below the base of rail or below the paralleling drainage ditch, whichever is greater. At locations where conduit crosses other subsurface utilities or other structures, the conduit shall be installed to provide a minimum of 12 inches of vertical clearance under the foreign object while maintaining a minimum cover of 42 inches. In rock, the conduit shall be placed either: (a) 8 inches deep in rock with 36 inches minimum cover; (b) 8 inch deep in rock with a concrete cap and 30 inches minimum cover; (c) 8 inches deep in rock with a 1/4 inch steel plate cover and 24 inches minimum cover or (d) in steel pipe placed on top of the rock with 18 inches minimum cover, whichever requires the least rock excavation. HDPE conduit will be back-filled with 2 inches of select materials (bedding) and 4 inches of select cover in rock areas. In the case of the use/conversion of conduit systems purchased or leased from third parties or salvaged conduit systems, the existing depths shall be considered adequate.

Minimum Depths. Minimum cover required in the placement of conduit shall be 42 inches, except in the following instances: : (a) The minimum cover in borrow ditches adjacent to roads, highways, railroads railroads, and interstates shall be 48 interstate highways is * inches below the clean-out cleanout line or existing grade, whichever is greater. * Confidential Treatment Applied For (b) The minimum cover across streams, river washes and other waterways shall be 48 is 60 inches below the clean-out cleanout line or existing grade, whichever is greater. Where Steel conduit crosses railroads, the conduit shall will be placed at a minimum depth of 60 inches below all such crossings unless the base of rail or below the paralleling drainage ditch, whichever crossing is greater. directional bored. (c) At locations where conduit crosses other subsurface utilities or other structures, the conduit shall be installed to provide a minimum of 12 * inches of vertical clearance and applicable minimum depth can be maintained; otherwise the conduit will be installed under the foreign object while maintaining a minimum cover of 42 inchesexisting utility or other structure. If, however, * inches cannot be obtained, the cable shall be encased in steel pipe rather than conduit. No fiber optic cable shall be buried without being surrounded by conduit or steel pipe. (d) In rock, the conduit shall be placed either: (a) 8 to provide a minimum of * inches deep in rock with 36 inches minimum cover; (b) 8 inch deep in rock with a concrete cap and 30 inches minimum cover; (c) 8 inches deep in rock with a 1/4 inch steel plate cover and 24 inches minimum cover or (d) in steel pipe placed on top below the surface of the rock with 18 solid rock, or provide a minimum of * inches minimum of total cover, whichever requires the least rock excavation. PVC or HDPE conduit will be back-filled backfilled with 2 6 inches of select materials (beddingpadding) and 4 inches of select cover in rock areas. . (e) In the case of the use/conversion of conduit systems purchased or leased from third parties existing steel pipelines or salvaged conduit systems, the existing depths depth shall be considered adequate.