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Home My WebLink AboutS-0703194 3 2 1 c NOTE: LOCATOR TAPE 15' SEE TRENCH NOTES COLOR RED 1,2,3,4,8,7,9, 10 k 11. /-- EXISTING GRADE TRENCH —i� �, SIDE SLOPES TO BE BACKFlLL —_III• DETERMINED BY SOIL —IYP. N " CONTRACTOR GRAVEL BACKFlLL — 111=111= = — _ APPROXIMATE FOR PIPE BEDDING TRENCH DAM � m� SCALE: 1 "- 10' -0" WATER TABLE TRENCH �- GROUND m i BEFORE DE— VERTICAL TRENCH LIMITS OF ELEV. 108 MIN. WATERING MAY VARY CDF CONCRETE $ -8 TRENCH DAM 108" SS BEDDING 108•SS 120• AND 5OX BENTONITE PRECAST CONC. •.' A, i }.�.•y N PIPE SUPPORTS 3 •.. .. ON EACH SIDE e OF JOINTS 19 1 WATER TABLE GRAVEL BACKFlLL i AFTER DEWATERING FOR PIPE BEDDING BEFORE TRENCH — EXCAVATION PIPE BEDDING AND TRENCH EXCAVATION (TYP.) SECTION A SCALE NONE 13,14,1 8 1 L - - -J 2' MIN. (TYP.) SECTION C SCALE: 1 "- 10' -0" , , 1. THE TRENCH WIDTH AT THE TOP SHALL BE WITHIN THE CONSTRUCTION EASEMENT AND AS DETERMINED BY THE CONTRACTOR TO SUIT HIS CONSTRUCTION OPERATIONS. TRAFFIC FLOW AND PROTECTION OF ADJACENT PROPERTY ARE THE CONTRACTOR'S RESPONSIBILITY, 2. THE HEIGHT AND THE SUPPORT SYSTEM FOR THE VERTICAL SECTION SHALL BE DETERMINED BY THE CONTRACTOR AS REQUIRED FOR THE PROTECTION OF ADJACENT PROPERTIES AND IMPROVEMENTS, .1 TRENCH SUPPORT SYSTEM SHALL BE USED WHERE REQUIRED BY W.I.S.H.A. PER CHAPTER 298 -155 WAC.. 4, COMPACT BACKFlLL ABOVE THE BEDDING ZONE TO 95 PERCENT IN FUTURE PAVED ZONES AND TO 90 PERCENT IN LANDSCAPING AREAS. COMPACT GRAVEL BACKFlLL FOR PIPE BEDDING TO 95 PERCENT. 5. CONTRACTOR SHALL UTILIZE A SHORING AND DEWATERING SYSTEM WHICH SHALL PREVENT LOWERING OF THE WATER TABLE IN THE ADJACENT WETLANDS. THE BEGINNING AND ENDING STATIONS ARE MINIMUMS, THE CONTRACTOR SHALL EXTEND THE SHORING AND DEWATERING SYSTEM FAR ENOUGH SO AS TO AVOID IMPACTS TO THE WETLANDS. 5. ALL SHORING INCLUDING SHEETING SHALL BE REMOVED WHEN BACKFlLL IS COMPLETE REMOVAL SHALL BE DONE AT A TIME AND IN SUCH A WAY SO AS NOT TO DISTURB PIPE BEDDING AND SO AS NOT TO ALLOW SLOUGHING OF ADJACENT UNDISTURBED SOIL 7. ALL SHORING WHICH IS IN CONTACT WITH CDF SHALL UTILIZE A BOND BREAKER TO ENSURE REMOVAL WITHOUT DISTURBANCE OF THE CDF. Q. EXCAVATION SPOILS MAY NOT BE PLACED ALONGSIDE THE TRENCH ADJACENT TO THE WETLANDS. SPOILS WILL - BE REMOVED AND STORED IN A LOCATION AT LEAST 100 FEET AWAY FROM ANY WETLANDS. 9. TRENCH DAMS PER SHALL BE PLACED Al 300' MAX , , INTERVALS ALONG TRENCH. 10. MATCH EXISTING GRADES AND SURFACES 11. THE WATER TABLE SHOWN ON THE DETAIL IS DIAGRAMATIC ONLY AND MAY VARY. IN THE WINTER OF 1991 THE WATER TABLE WAS AT ELEVATION 110.3, IN THE SUMMER OF 1992 IT WAS AT 105.0. THESE ELEVATIONS SHALL BE USED FOR INFORMATION PURPOSES ONLY. ASPHALT CONCRETE (3" MIN.) REPLACEMENT PATCH TO BE 1" THICKER THAN EX'S""^ ASPHALT CONCRETE EXISTING ASPHALT CONCRETE —� H 1 k 1 =f TIGHT SHEET SHORING TO LIMIT GROUND WATER ENTRY FROM WETLANDS - TRENCH BACKFlLL GRAVEL BACKFlLL FOR PIPE BEDDING CDF CONCRETE BEDDING PRECAST CONC. PIPE SUPPORTS( ON EACH SIDE OF JOINTS it GRAVEL BACKFlLL FOR PIPE BEDDING NOTE: SEE TRENCH NOTES 1,3,4,5,6,7,8,9,10 k 11. EXISTING GRADE APPROXIMATE WATER TABLE BEFORE DE— WATERING MAY VARY J9 2 106" SS N N � 3 —WATER TABLE EMBEDMENT DEPTH TO 'f1' BETWEEN SHORING BE DETERMINED BY AFTER DEWATERING CONTRACTOR BEFORE TRENCH EXCAVATION PIPE BEDDING AND TRENCH EXCAVATION ADJACENT TO WETLANDS FROM STA. 41 +60 TO STA. 52 +00 MINIMUM DETAIL SCALE NONE 16 1 DETAIL D SCALE. 16 1 1AL JOINT MUST .SAW —CUT MIN. CRUSHED SURFACING iP COURSE ENCH BACKFlLL 1 V -6. ' V -8. 1 1 LIFT HOOK (TYP.) 4 D PRECAST CONCRETE JOI T UPPORT SCALE NONE 79, 3 1 SECTION SCALE: 1 1/2' -i' -0" 1 1 PIPE LENGTH 19 Gi' — i iii i i i i LJ LJ — — — — — — 7A 4J J I 2• 1YP. PRECAST CONCRETE JOINT SUPPORTS, —2. JOE 2 19 1 TYPICAL PLAN PIPE SUPPORT r3 SCALE: NONE 19 119, SECTION AT PIPE SUPPORT SCALE: NONE 1 1 ' WOOD WEDGES, CUT FROM 6'x1 TREATED STOO 24' LONG 5 SECTION G SCALE: NONE 19 , PIPE TO FINAL 4T USING WEDGES CONCRETE PIPE SUPPORT Q oa.B C 128218 JLNGMAX )ATE: ' R.B. METRO Munlelpolty of Metropolitan Seattle NOVEMBER 1902 Sverdrup THIS BAR IS 1- ACTUAL SIZE. /1- z A p� D.L.O. J.D.B. SOUTH INTERCEPTOR — PARALLEL CORPORATION 1/4® �v AS SHOWN PHASE 1 WAWM NO: IF NOT I', SCALE ACCORDINGLY. - A PIPE BEDDING, TRENCHING AND C113 N0: tea+ 01' DATE EXPIRES 06114/'93 / W/M 4992 SHORING DETAILS ". 19 321 m EXTEND INTO UNDISTURBED 106'SS SOIL —IYP. N " 21 MIN, TRENCH DAM CENTERED IN LIMITS OF PIPE SECTION TRENCH TRENCH DAM DETAIL SCALE: 1 "- 10' -0" 1 , TRENCH BACKFlLL GROUND LIMITS OF ELEV. 108 MIN. TRENCH i+--- UNDISTURBED TRENCH DAM SOIL CDF OR A MIXTURE 0 I 108•SS OF 50% NATIVE SOIL AND 5OX BENTONITE I— V MIN. L - - -J 2' MIN. (TYP.) SECTION C SCALE: 1 "- 10' -0" , , 1. THE TRENCH WIDTH AT THE TOP SHALL BE WITHIN THE CONSTRUCTION EASEMENT AND AS DETERMINED BY THE CONTRACTOR TO SUIT HIS CONSTRUCTION OPERATIONS. TRAFFIC FLOW AND PROTECTION OF ADJACENT PROPERTY ARE THE CONTRACTOR'S RESPONSIBILITY, 2. THE HEIGHT AND THE SUPPORT SYSTEM FOR THE VERTICAL SECTION SHALL BE DETERMINED BY THE CONTRACTOR AS REQUIRED FOR THE PROTECTION OF ADJACENT PROPERTIES AND IMPROVEMENTS, .1 TRENCH SUPPORT SYSTEM SHALL BE USED WHERE REQUIRED BY W.I.S.H.A. PER CHAPTER 298 -155 WAC.. 4, COMPACT BACKFlLL ABOVE THE BEDDING ZONE TO 95 PERCENT IN FUTURE PAVED ZONES AND TO 90 PERCENT IN LANDSCAPING AREAS. COMPACT GRAVEL BACKFlLL FOR PIPE BEDDING TO 95 PERCENT. 5. CONTRACTOR SHALL UTILIZE A SHORING AND DEWATERING SYSTEM WHICH SHALL PREVENT LOWERING OF THE WATER TABLE IN THE ADJACENT WETLANDS. THE BEGINNING AND ENDING STATIONS ARE MINIMUMS, THE CONTRACTOR SHALL EXTEND THE SHORING AND DEWATERING SYSTEM FAR ENOUGH SO AS TO AVOID IMPACTS TO THE WETLANDS. 5. ALL SHORING INCLUDING SHEETING SHALL BE REMOVED WHEN BACKFlLL IS COMPLETE REMOVAL SHALL BE DONE AT A TIME AND IN SUCH A WAY SO AS NOT TO DISTURB PIPE BEDDING AND SO AS NOT TO ALLOW SLOUGHING OF ADJACENT UNDISTURBED SOIL 7. ALL SHORING WHICH IS IN CONTACT WITH CDF SHALL UTILIZE A BOND BREAKER TO ENSURE REMOVAL WITHOUT DISTURBANCE OF THE CDF. Q. EXCAVATION SPOILS MAY NOT BE PLACED ALONGSIDE THE TRENCH ADJACENT TO THE WETLANDS. SPOILS WILL - BE REMOVED AND STORED IN A LOCATION AT LEAST 100 FEET AWAY FROM ANY WETLANDS. 9. TRENCH DAMS PER SHALL BE PLACED Al 300' MAX , , INTERVALS ALONG TRENCH. 10. MATCH EXISTING GRADES AND SURFACES 11. THE WATER TABLE SHOWN ON THE DETAIL IS DIAGRAMATIC ONLY AND MAY VARY. IN THE WINTER OF 1991 THE WATER TABLE WAS AT ELEVATION 110.3, IN THE SUMMER OF 1992 IT WAS AT 105.0. THESE ELEVATIONS SHALL BE USED FOR INFORMATION PURPOSES ONLY. ASPHALT CONCRETE (3" MIN.) REPLACEMENT PATCH TO BE 1" THICKER THAN EX'S""^ ASPHALT CONCRETE EXISTING ASPHALT CONCRETE —� H 1 k 1 =f TIGHT SHEET SHORING TO LIMIT GROUND WATER ENTRY FROM WETLANDS - TRENCH BACKFlLL GRAVEL BACKFlLL FOR PIPE BEDDING CDF CONCRETE BEDDING PRECAST CONC. PIPE SUPPORTS( ON EACH SIDE OF JOINTS it GRAVEL BACKFlLL FOR PIPE BEDDING NOTE: SEE TRENCH NOTES 1,3,4,5,6,7,8,9,10 k 11. EXISTING GRADE APPROXIMATE WATER TABLE BEFORE DE— WATERING MAY VARY J9 2 106" SS N N � 3 —WATER TABLE EMBEDMENT DEPTH TO 'f1' BETWEEN SHORING BE DETERMINED BY AFTER DEWATERING CONTRACTOR BEFORE TRENCH EXCAVATION PIPE BEDDING AND TRENCH EXCAVATION ADJACENT TO WETLANDS FROM STA. 41 +60 TO STA. 52 +00 MINIMUM DETAIL SCALE NONE 16 1 DETAIL D SCALE. 16 1 1AL JOINT MUST .SAW —CUT MIN. CRUSHED SURFACING iP COURSE ENCH BACKFlLL 1 V -6. ' V -8. 1 1 LIFT HOOK (TYP.) 4 D PRECAST CONCRETE JOI T UPPORT SCALE NONE 79, 3 1 SECTION SCALE: 1 1/2' -i' -0" 1 1 PIPE LENGTH 19 Gi' — i iii i i i i LJ LJ — — — — — — 7A 4J J I 2• 1YP. PRECAST CONCRETE JOINT SUPPORTS, —2. JOE 2 19 1 TYPICAL PLAN PIPE SUPPORT r3 SCALE: NONE 19 119, SECTION AT PIPE SUPPORT SCALE: NONE 1 1 ' WOOD WEDGES, CUT FROM 6'x1 TREATED STOO 24' LONG 5 SECTION G SCALE: NONE 19 , PIPE TO FINAL 4T USING WEDGES CONCRETE PIPE SUPPORT Q oa.B C 128218 JLNGMAX )ATE: ' R.B. METRO Munlelpolty of Metropolitan Seattle NOVEMBER 1902 Sverdrup THIS BAR IS 1- ACTUAL SIZE. /1- z A p� D.L.O. J.D.B. SOUTH INTERCEPTOR — PARALLEL CORPORATION 1/4® �v AS SHOWN PHASE 1 WAWM NO: IF NOT I', SCALE ACCORDINGLY. - A PIPE BEDDING, TRENCHING AND C113 N0: tea+ 01' DATE EXPIRES 06114/'93 / W/M 4992 SHORING DETAILS ". 19 321 m