2012-02-28_REVISION - M1980244 (13)

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REFERENCE: EXISTING GROUND TOPOGRAPHY WAS CREATED BY CON49INING THE =OLLOWINC FILES SQUAW GULCH BASE TOPO - PHASE l.DWG (RECV MARCH 29, 2010 FROM FORESIGHT WEST SURVEYING, INC.) SQUAW GULCH BASE TOPO - PHASE 2.DWG (RECV APRIL 26, 2010 FROM FORESIllilf WEST SURVEYING, INC) SQUAW GULCH BASE TOPO - PHASE 3.DWG (RECV MAY 4, 2010 FROM FORESIGHT 'NEST SURVEYING, 09028 -COMOSIFE-TOPO MILE -lMITS.DWG (RECV MAY 28, 2010 FROM CC&V) 100 0 100 200 FEET LEGEND: EXISTING GROUND SURFACE CONTOUR AND EL, FEET (AERIAL SURVEY) EXISTING GROUND SURFACE CONTOUR AND EL, FEET (PROVIDED BY FORESIGHT WEST SURVEYING) PROPOSED GROUND SURFACE CONTOUR AND EL, FEET NOTES: 1. TIMBER FROM EXISTING TIMBER WALLS TO BE USED FOR WALL FACING 5. VERTICAL SPACING OF MSE REINFORCEMENTS TO BE DETERMINED BASED CONSTRUCTION. ON INTERNAL STABILITY OF STRUCTURE, WITH A MAXIMUM SPACING OF 24 INCHES. 2. BASED ON ANTICIPATED WALL LOCATIONS, ONLY OPTIONS FOR SHORED MECHANICALLY-STABILIZED EARTH (SMSE) WALLS ARE SHOWN. EXPOSED COMPETENT BEDROCK WOULD ALSO PROVIDE A SUFFICIENT BACKSLOPE FOR WALL FACING CONSTRUCTION. HOWEVER, CONTRACTOR MAY ELECT TO EXCAVATE SUFFICIENTLY TO PROVIDE FOR CONSTRUCTION OF ONLY ED EARTH (MSE) WALL WITH A LARGER CROSS-SECTIONAL GEOMETRY. 3. DETAILS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY. CONTRACTOR TO DEVELOP DESIGN SHOP DRAWINGS FOR REVIEW BY ENGINEER FOLLOWING GUIDANCE PROVIDED IN FHWA PUBLICATION NUMBER FHWA-CFL/TD-06-001 (MORRISON ET AL., 2006). 4. EMBEDMENT DEPTH (D) FUNCTION OF WALL SLOPE IN FRONT OF WALL, WITH A MINIMUM DEPTH OF 1.6 FT. TREATED PL) 1/2' OPTION A NTS RECLAIMED TIMBER CRIBBING (SEE NOTE 1) H FINISHED TIMBER IFORCEMENT, AROUND NAIL STRIP r REINFORCEMENT, WRAPPED AROUND )OD BATTEN STRIP 6. REINFORCED FILL TO CONSIST OF FREE-DRAINING SELECT GRANULAR FILL. 7. INTERNAL AND EXTERNAL DRAINAGE FOR THE RETAINING WALL IS REQUIRED, WHICH MAY CONSIST OF A DIVERSION CHANNEL ABOVE THE RETAINING WALL, INTERNAL DRAINAGE FOR THE SHORING WALL WITH WEEP HOLES EXITING THE FACE OF THE TIMBER WALL, AND DRAINAGE BELOW AND BEHIND THE MSE REINFORCED FILL (IF POORLY DRAINING BACKFILL IS USED). 8. SPECIAL CARE SHALL BE TAKEN IN DESIGN OF CONNECTIONS TO THE TIMBER FACING AND THE SHORING WALL TO CONFIRM THE TENSILE STRENGTH OF THE PROPOSED CONNECTION MEETS OR EXCEEDS THE TENSILE STRENGTH OF THE MSE REINFORCEMENT. OPTION B NTS IN�WnIN MSE REINFORCEMENT TO TIMBER CONNECTION GRADE TO PREVENT SURFACE PONDING MSE REINFORCEMENT TO TIMBER DETAIL 1 CED FILl- tAO VE 6) 12" TO 24" (SEE NOTE 5) EXISTING GROUND --"Z SHORING WALL (NOTE 2) NOTE: SHORING WALL REINFORCEMENTS NOT SHOWN FOR CLARITY MSE REINFORCEMENT TO SHORING WALL CONNECTION D F(SEE DETAIL 2) (SEE NOTE 4)(� --MSE REINFORCEMENT '7 - LENGTH = 0.3H MIN. LEVELING PAD TYPICAL CUT WALL WITH TIMBER FACING POTENTIAL TIMBER FACED WALL AREA I ---, FACE OF TIMBER MSE WALL NTS MSE REINFORCEMENT (REMOVE SLACK FROM CONNECTION) GALVANIZED CARRIAGE BOLT SET IN DRILLED HOLE WITH BONDED EPDXY SHOTCRETE SHORING WALL OR ROCK CUT SLOPE VOOD 50mm OR LARGER)_ GALVANIZED STANDAR _ PIPE BODKIN JOINT OPTION A NTS REINFORCEM MSE REINFORCEMENT EXTENDING FROM SHORING WALL FACE SHOTCRETE SHORING WALL OPTION B NTS MSE REINFORCEMENT TO SHORING WALL TIMBER, MOCK CRIB ANCHOR (�B WALL ELEVATION VIEW �A800 NTS EXISTIN -RAIL ROAC < A A800 SA PAD AR IAF Ell A S rl I REFERENCE: EXISTING GROUND TOPOGRAPHY WAS CREATED BY CON49INING THE =OLLOWINC FILES SQUAW GULCH BASE TOPO - PHASE l.DWG (RECV MARCH 29, 2010 FROM FORESIGHT WEST SURVEYING, INC.) SQUAW GULCH BASE TOPO - PHASE 2.DWG (RECV APRIL 26, 2010 FROM FORESIllilf WEST SURVEYING, INC) SQUAW GULCH BASE TOPO - PHASE 3.DWG (RECV MAY 4, 2010 FROM FORESIGHT 'NEST SURVEYING, 09028 -COMOSIFE-TOPO MILE -lMITS.DWG (RECV MAY 28, 2010 FROM CC&V) 100 0 100 200 FEET LEGEND: EXISTING GROUND SURFACE CONTOUR AND EL, FEET (AERIAL SURVEY) EXISTING GROUND SURFACE CONTOUR AND EL, FEET (PROVIDED BY FORESIGHT WEST SURVEYING) PROPOSED GROUND SURFACE CONTOUR AND EL, FEET NOTES: 1. TIMBER FROM EXISTING TIMBER WALLS TO BE USED FOR WALL FACING 5. VERTICAL SPACING OF MSE REINFORCEMENTS TO BE DETERMINED BASED CONSTRUCTION. ON INTERNAL STABILITY OF STRUCTURE, WITH A MAXIMUM SPACING OF 24 INCHES. 2. BASED ON ANTICIPATED WALL LOCATIONS, ONLY OPTIONS FOR SHORED MECHANICALLY-STABILIZED EARTH (SMSE) WALLS ARE SHOWN. EXPOSED COMPETENT BEDROCK WOULD ALSO PROVIDE A SUFFICIENT BACKSLOPE FOR WALL FACING CONSTRUCTION. HOWEVER, CONTRACTOR MAY ELECT TO EXCAVATE SUFFICIENTLY TO PROVIDE FOR CONSTRUCTION OF ONLY ED EARTH (MSE) WALL WITH A LARGER CROSS-SECTIONAL GEOMETRY. 3. DETAILS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY. CONTRACTOR TO DEVELOP DESIGN SHOP DRAWINGS FOR REVIEW BY ENGINEER FOLLOWING GUIDANCE PROVIDED IN FHWA PUBLICATION NUMBER FHWA-CFL/TD-06-001 (MORRISON ET AL., 2006). 4. EMBEDMENT DEPTH (D) FUNCTION OF WALL SLOPE IN FRONT OF WALL, WITH A MINIMUM DEPTH OF 1.6 FT. TREATED PL) 1/2' OPTION A NTS RECLAIMED TIMBER CRIBBING (SEE NOTE 1) H FINISHED TIMBER IFORCEMENT, AROUND NAIL STRIP r REINFORCEMENT, WRAPPED AROUND )OD BATTEN STRIP 6. REINFORCED FILL TO CONSIST OF FREE-DRAINING SELECT GRANULAR FILL. 7. INTERNAL AND EXTERNAL DRAINAGE FOR THE RETAINING WALL IS REQUIRED, WHICH MAY CONSIST OF A DIVERSION CHANNEL ABOVE THE RETAINING WALL, INTERNAL DRAINAGE FOR THE SHORING WALL WITH WEEP HOLES EXITING THE FACE OF THE TIMBER WALL, AND DRAINAGE BELOW AND BEHIND THE MSE REINFORCED FILL (IF POORLY DRAINING BACKFILL IS USED). 8. SPECIAL CARE SHALL BE TAKEN IN DESIGN OF CONNECTIONS TO THE TIMBER FACING AND THE SHORING WALL TO CONFIRM THE TENSILE STRENGTH OF THE PROPOSED CONNECTION MEETS OR EXCEEDS THE TENSILE STRENGTH OF THE MSE REINFORCEMENT. OPTION B NTS IN�WnIN MSE REINFORCEMENT TO TIMBER CONNECTION GRADE TO PREVENT SURFACE PONDING MSE REINFORCEMENT TO TIMBER DETAIL 1 CED FILl- tAO VE 6) 12" TO 24" (SEE NOTE 5) EXISTING GROUND --"Z SHORING WALL (NOTE 2) NOTE: SHORING WALL REINFORCEMENTS NOT SHOWN FOR CLARITY MSE REINFORCEMENT TO SHORING WALL CONNECTION D F(SEE DETAIL 2) (SEE NOTE 4)(� --MSE REINFORCEMENT '7 - LENGTH = 0.3H MIN. LEVELING PAD TYPICAL CUT WALL WITH TIMBER FACING POTENTIAL TIMBER FACED WALL AREA I ---, FACE OF TIMBER MSE WALL NTS MSE REINFORCEMENT (REMOVE SLACK FROM CONNECTION) GALVANIZED CARRIAGE BOLT SET IN DRILLED HOLE WITH BONDED EPDXY SHOTCRETE SHORING WALL OR ROCK CUT SLOPE VOOD 50mm OR LARGER)_ GALVANIZED STANDAR _ PIPE BODKIN JOINT OPTION A NTS REINFORCEM MSE REINFORCEMENT EXTENDING FROM SHORING WALL FACE SHOTCRETE SHORING WALL OPTION B NTS MSE REINFORCEMENT TO SHORING WALL TIMBER, MOCK CRIB ANCHOR (�B WALL ELEVATION VIEW �A800 NTS