20150765 Ver 1_SF-040017_Culvert Phasing_20141212_20150731

PROJECT REFERENCE NO. SHEET NO.
l7BPolloRe68 EC-6/CONST.4
WW SHEET NO.
ROADWAY DESIGN HYDRAULICS
ENGINEER ENGINEER
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PHASE 1 PHASE 2 PHASE 3
l. INSTALL PERIMETER EROSION CONTROL DEVICES AS SHOWN ON EC-4 & EC-5. l. CONSTRUCT IMPERVIOUS DIKE C AND REMOVE IMPERVIOUS DIKE A. l. REINSTALL IMPERVIOUS DIKE A AND REMOVE THE DETOUR AND TEMPORARY PIPE.
2. CONSTRUCT IMPERVIOUS DIKES A& B TO RESTRAIN STREAM AND BEGIN 2. PUMP STREAM INTO PREVIOUSLY INSTALLED 2-42" PIPES. 2. CONSTRUCT THE REMAINING SECTION OF 19'-5" X 4'-11" ALUMINUM BOX
PUMP AROUND OPERATIONS. UTILIZE SPECIAL STILLING BASIN TO DEWATER 3. REMOVE THE EXISTING BRIDGE OVER MILL CREEK. CULVERT AND WESTERN HEADWALL.
WORK SITE AS NEEDED. 4. CONSTRUCT APPROXIMATELY 57 LF OF 19'-5" X 4'-11" ALUMINUM BOX 3. COMPLETE ANY NECESSARY INLET/OUTLET CHANNEL IMPROVEMENTS.
3. CONSTRUCT ON-SITE DETOUR FROM STA. -DET- 10 + 32 TO 12 + 98. CULVERT AND EASTERN HEADWALL. 4. REMOVE IMPERVIOUS DIKES A& C, DIVERTING WATER INTO NEW CULVERT.
4. CONSTRUCT APPROXIMATELY 44 LF OF 2-42" TEMPORARY PIPE AND 5. COMPLETE ROADWAY CONSTRUCTION.
TEMPORARY HEADWALLS. 6. PLACE THE TRAFFIC IN ITS FINAL PATTERN.
5. SHIFT TRAFFIC ONTO THE ON-SITE DETOUR.
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IMPERVIOUS � IMPERVIOUS � DIKE C DIKE C
DIKE B � DIKE B � �
STILLING
CONTRACTOR IS TO USE PUMP AROUND
OPERATIONS AS DIRECTED BY THE ENGINEER
TO MAI NTAI N STREAM FLOW.
INSTALL PIPE(S) IN JURISDICTIONAL AREAS ACCORDING TO
NCDOT BEST MANAGEMENT PRACTICES FOR
CONSTRUCTION AND MAINTENANCE ACTIVITIES MANUAL.