FOR CITY OF ESCANABA, MICHIGAN PHASE III - CN CASING EXTENSIONescanaba.org/images/20/file/170577_Phase 3 CN_Bidding... · 2017-10-04 · The profile is to be 25" wide by an average
IT IS UNDERSTOOD THAT THE CONTRACTOR SHALL PERFORM ALL WORK UNDER THIS CONTRACT IN ACCORDANCE WITH ALL APPLICABLE PROVISIONS, POLICIES, RULES AND STANDARDS OF THE MICHIGAN OCCUPATIONAL SAFETY AND HEALTH ACT (MIOSHA), BEING ACT 154 OF THE PUBLIC ACTS OF 1974 AND AS AMENDED.
EXCEPT WHERE OTHERWISE INDICATED ON THE PLANS OR IN THE PROPOSAL AND SUPPLEMENTAL SPECIFICATIONS CONTAINED THEREIN, ALL MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH THE APPLICABLE SECTIONS OF THE MICHIGAN DEPARTMENT OF TRANSPORTATION 2012 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND THE CURRENT SUPPLEMENTAL SPECIFICATIONS. (AVAILABLE AT WWW.MDOT.STATE.MI.US/SPECBOOK/2012/)
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Construction and maintenance to be in accordance with all applicable regulatory requirements and standards. ESCANABA WATER DEPARTMENT Jeff Lampi- Water Superintendent One Water Plant Road PO BOX 948, ESCANABA, MI 49829 (906)786-3291786-3291
15' - PROPOSED 30" WELDED SPLIT WATER MAIN CASING EXTENSION
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CN ROW
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CN ROW
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2H:1V
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WATER FLOWS FROM NORTH TO SOUTH OR SOUTH TO NORTH
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2H:1V
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.
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PROPOSED TRENCH WITH OSHA STANDARD SHORING OR SLOPES
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C.L. OF TWO EXISTING RAIL ROAD TRACKS
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EXISTING 16" D.I.P.
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N.19th St. C.L.19th St. C.L.
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17th AVE. N.
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CN BOUNDARY
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CN BOUNDARY
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INSTALL WATER MAIN WARNING MARKER
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INSTALL WATER MAIN WARNING MARKER
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SAFETY FENCE INSTALLED AROUND PERIMETER OF EXCAVATION
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PROPOSED CASING EXTENSION
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EXISTING CASING
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PROPOSED UTILITY MARKER
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PROPOSED UTILITY MARKER
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EXCAVATION STOCK PILE
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EXISTING GROUND SURFACE
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ISOLATION VALVE
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EXISTING 16" D.I.P.
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EXISTING 16" D.I.P.
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RAILROAD CROSSING DETAIL NO SCALE
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CL CASING
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EXISTING WATER MAIN
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15' CASING EXT. WITH SEALED END
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CL WATER MAIN
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4"x4" WOOD SKIDS
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S.S. BANDING
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SKID NOTCHES
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STABILIZED SAND BACKFILL
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PROPOSED WATER MAIN CASING EXT. DETAIL NO SCALE
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BRICK SEAL OF CASING
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WELD AROUND THE CIRCUMFERENCE OF THE PROPOSED CASING AND EXISTING CASING MATING SURFACE
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SPLIT CASING EXTENSION HALVES
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WELD SEAMS OF THE MATING SURFACES OF THE TWO CASING HALVES
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PROPOSED SPLIT CASING 15' EXTENSION.
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EXISTING 30" WATER MAIN CASING
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EXISTING 16" WATER MAIN CL
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STABILIZED SAND BACKFILL
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EXISTING 16" WATER MAIN
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TRENCH AND BACKFILL DETAIL NO SCALE
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GENERAL NOTES: 1.Nearest street crossing is east of plan view. Milepost MP115 closest to proposed site. Nearest street crossing is east of plan view. Milepost MP115 closest to proposed site. 2.Direction of water flows from both the north to south and south to north with isolation valves located on the north Direction of water flows from both the north to south and south to north with isolation valves located on the north ROW of 17th Ave. North and near 20th Ave. North. 3.Open trenching methodology is to be used to expose the existing water main casing. No excavation shall take place Open trenching methodology is to be used to expose the existing water main casing. No excavation shall take place without the sheet piles installed. All excavated material should be stored to the back side of excavation with respect to the tracks unless this creates an unsafe condition or a better location can be justified. Soil is not considered contaminated as it covers a potable water supply main. A temporary safety fence is to be installed to protect the open trench. Sheet piles are to be installed 17.5' off the northerly track centerline. The designed sheet piles are to be installed at an embedment depth of 21'-3" and to be removed at the completion of construction. The existing water main and casing is to be exposed according to the profile on this sheet. Sufficient blocking or bracing of the exposed water main shall be installed to prevent any shifting of the existing water main while the pipe is exposed. 4.Remove the existing concrete bulkhead and clean the freshly exposed edge of the casing so that the weld may be Remove the existing concrete bulkhead and clean the freshly exposed edge of the casing so that the weld may be contaminant free. 5.The existing water main is to be extended an additional 15' to the north shown in the profile, using 30" nominal The existing water main is to be extended an additional 15' to the north shown in the profile, using 30" nominal diameter steel pipe with a minimum wall thickness of 0.469" according to AREMA standards to withstand Cooper E-80 train loading. The proposed split casing is to be installed in two pieces and welded around the circumference and seams showed in the detail below titled "Proposed Water Main Casing Extension". The 4"x4" pressure treated wood skids, 1'-6" long are to be notched to accept strapping and then strapped to the water main using stainless steel straps. Install 2 sets of skids per each length of pipe. The upper portion of the split casing may be placed and permanently welded. All voids under casing extension shall be filled with flowable concrete. 3.The open void around the casing and water main shall be filled with stabilized sand backfill. The open end of the The open void around the casing and water main shall be filled with stabilized sand backfill. The open end of the casing is to be suitably sealed to the outside of the carrier pipe. Bedding sand backfill shall be placed over the pipe free of any rocks and debris. The fill soil may be borrowed from the excavation stock pile. A compaction of 95% Proctor test suitable for the soil type and commence in lifts specified by the CN Chief Engineer or the designated representative. The surface grade is to be restored and any seeding required shall be planted to DOT specifications. 4.All guidelines and recommendations stated in the Utility Crossing/Enchroachment Application Packet published by CN All guidelines and recommendations stated in the Utility Crossing/Enchroachment Application Packet published by CN Southern Region shall be followed. 5.Utility markers shall be placed on the edge of CN right of way. Steel posts are to be U-channel or commonly Utility markers shall be placed on the edge of CN right of way. Steel posts are to be U-channel or commonly known as 3 lbs/ft posts. The markers shall identify the underground water main, with the utility owners contact information (see title sheet). 6.All casing welds shall comply with DWS 1.5 and shall be full penetration welds. All casing welds shall comply with DWS 1.5 and shall be full penetration welds. 7.Excavation shoring shall consist of a steel sheet pile wall interlocked and driven to an embedment depth of 21'-3" Excavation shoring shall consist of a steel sheet pile wall interlocked and driven to an embedment depth of 21'-3" with the following properties based on information in the geotechnical report and CN Railway guidelines. 8.Steel sheet piling to be 'EZ' series, ASTM A572 Gr. 50. The profile is to be 25" wide by an average depth of 10.8" Steel sheet piling to be 'EZ' series, ASTM A572 Gr. 50. The profile is to be 25" wide by an average depth of 10.8" with continuous interlocking joints the full length of the sheet. The minimum thickness shall be " and the 516" and the minimum section modulus 20.5 in 3 per foot of wall. Steel sheeting to be hot-dip galvanized per ASTM A123. 9.Submit shop drawings showing final layout and design for the steel sheet piling excavation shoring based on the Submit shop drawings showing final layout and design for the steel sheet piling excavation shoring based on the required design loads and soils information. Shop drawings, including the analysis, to be signed and sealed by the professional engineer responsible for their preparation. Professional engineer to be licensed in Michigan.
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PROPOSED 15' CASING EXTENSION OF 30" D.I.P.
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EXISTING 16" WATER MAIN
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UNDISTURBED SOIL
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ALL VOIDS UNDER CASING EXT. SHALL BE FILLED WITH FLOWABLE CONCRETE
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REMOVE EXISTING CONCRETE CASING SEAL
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ALL VOIDS UNDER CASING EXT. SHALL BE FILLED WITH FLOWABLE CONCRETE
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UNDISTURBED SOIL
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UNDISTURBED SOIL
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UNDISTURBED SOIL
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EXISTING GRADE
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WELD SEAMS OF THE MATING SURFACES OF THE TWO CASING HALVES
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STABILIZED SAND BACKFILL BETWEEN CARRIER AND CASING PIPES
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EXCAVATION FILL COMPACT TO 95% SPT
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APPROVED BEDDING FOR WATER MAIN CASING
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STANDARD OSHA SHORING OR SLOPES AFTER INSTALLATION OF SHEET PILE
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STANDARD OSHA SHORING OR SLOPES AFTER INSTALLATION OF SHEET PILE
