Three four-hundred-millimeter reinforced concrete pipes are installed beneath a roadway within a crushed aggregate bed using stone size RC-forty. A minimum depth of fill of three hundred millimeters is maintained over the culverts. Spacing between the pipes is set at three hundred millimeters typical.
400 RCP TYP. 400 RCP TYP. 400 RCP TYP. 300 300 300 MINIMUM DEPTH OF FILL OVER CULVERT CRUSHED AGGREGATE (STONE SIZE RC-40) ROADWAY CROSS-SECTION
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