CG-403_Amend 6 (2).pdf

SETTLEMENT PLATE POINTS

VIBRATING WIRE PIEZOMETER POINTS

INCLONIMITER POINTS

SATISFACTORY TO

APPROVED

ACTIVITY

DATE

FOR COMMANDER NAVFAC

SEAL

A/E INFO

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2 3 4 5

1 2 3 4 5

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SCALE:

CONSTR. CONTR. NO.

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DRAWFORM REVISION: 06 APRIL 2017

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1396650

PROFESS IONAL ENG

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CG-403

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LEGEND

NOTES:

WICK DRAINS AND SURCHARGE LIMITS

SETTLEMENT PLATE DETAIL

GEOTECHNICAL NOTES:

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STM/SEW

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TOPO THIS

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OBSCURE AREA

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DIRT ROAD

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DIRT ROAD

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DIRT ROAD

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SOUTH PERIMETER ROAD

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SOUTH PERIMETER ROAD

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SOUTH PERIMETER ROAD

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SOUTH PERIMETER ROAD

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AutoCAD SHX Text PROFESSIONAL CERTIFICATION: I HEREBY CERTIFY THAT THESE DOCUMENTS WERE PREPARED OR APPROVED BY ME, AND THAT I AM A DULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF MARYLAND, LICENSE NO. 53990 , EXPIRATION DATE: 02-24-2023.

AutoCAD SHX Text 09/26/2022

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AutoCAD SHX Text 0 ISSUE FOR CONSTRUCTION 09/26/2022ISSUE FOR CONSTRUCTION 09/26/2022 09/26/202209/26/2022

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1 AMENDMENT 0004 04/01/2023AMENDMENT 0004 04/01/2023 04/01/202304/01/2023

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2 AMENDMENT 0005 04/15/2023AMENDMENT 0005 04/15/2023 04/15/202304/15/2023

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AS NOTED

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AutoCAD SHX Text WICK DRAIN/PRE-CONSOLIDATION PHASE 1A AREA WICK DRAIN/PRE-CONSOLIDATION PHASE 1B AREA SETTLEMENT PLATE VIBRATING WIRE PIEZOMETER INCLINOMETER

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1. MINIMUM 125 PCF MOIST UNIT WEIGHT MATERIAL MUST BE USED AS SURCHARGE FILL. MINIMUM 125 PCF MOIST UNIT WEIGHT MATERIAL MUST BE USED AS SURCHARGE FILL. 2. PREFABRICATED WICK DRAINS WITH WIDTH = 0.33 FT, THICKNESS 0.01, PLACED IN TRIANGULAR PATTERN. PREFABRICATED WICK DRAINS WITH WIDTH = 0.33 FT, THICKNESS 0.01, PLACED IN TRIANGULAR PATTERN. 3. THE REQUIRED WAITING PERIOD IS MEASURED FROM THE COMPLETION OF SURCHARGE PLACEMENT. SURCHARGE MUST REMAIN IN PLACE FOR THE THE REQUIRED WAITING PERIOD IS MEASURED FROM THE COMPLETION OF SURCHARGE PLACEMENT. SURCHARGE MUST REMAIN IN PLACE FOR THE DURATION OF THE SPECIFIED WAITING PERIOD. 4. SURCHARGE AND WICK DRAINS ARE REQUIRED WITHIN FILL AREAS TO MAINTAIN THE POST-CONSTRUCTION SETTLEMENTS LESS THAN 1-INCH. SURCHARGE AND WICK DRAINS ARE REQUIRED WITHIN FILL AREAS TO MAINTAIN THE POST-CONSTRUCTION SETTLEMENTS LESS THAN 1-INCH. POST-CONSTRUCTION SETTLEMENTS ARE ESTIMATED TO OCCUR BETWEEN THE END OF THE SPECIFIED WAITING PERIOD AND 100 YEARS. 5. SURCHARGE MATERIAL MUST NOT BE REMOVED UNTIL APPROVAL FROM GEOTECHNICAL ENGINEER IS PROVIDED. SURCHARGE MATERIAL MUST NOT BE REMOVED UNTIL APPROVAL FROM GEOTECHNICAL ENGINEER IS PROVIDED. 6. REFER TO SHEETS CG-121 TO CG-123 FOR GRADING PLAN. REFER TO SHEETS CG-121 TO CG-123 FOR GRADING PLAN. 7. PRE-CONSOLIDATION AREAS SHOWN ON THIS SHEET INDICATE THE TOE OF THE FILL SLOPE REQUIRED FOR SURCHARGE. TEMPORARY SURCHARGE PRE-CONSOLIDATION AREAS SHOWN ON THIS SHEET INDICATE THE TOE OF THE FILL SLOPE REQUIRED FOR SURCHARGE. TEMPORARY SURCHARGE MATERIAL SHALL BE INSTALLED AT A 1:1 FILL SLOPE.

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STRUCTURE

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SURCHARGE HEIGHT (FT)

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ESTIMATED SETTLEMENT (IN)

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WICK DRAINS

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COMMENTS

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SPACING (FT)

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TIP ELEVATION (FT)

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CENTRAL TAXIWAY FILL AREA

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FINISHED SUBGRADE ELEVATION + 5

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AutoCAD SHX Text APPROXIMATELY 3-4 MONTHS WAITING PERIOD IS REQUIRED AFTER THE SURCHARGE IS PLACED

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SOUTHWEST TAXIWAY FILL AREA

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FINISHED SUBGRADE ELEVATION + 5

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AutoCAD SHX Text APPROXIMATELY 3-4 MONTHS WAITING PERIOD IS REQUIRED AFTER THE SURCHARGE IS PLACED

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WELD GUSSETS TO STEEL BASE PLATE

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TOP OF NEW COMPACTED FILL

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CAP OVER OPEN END

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30-IN BY 30-IN BY 1/4-IN STEEL BASE PLATE

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APPROVED SUBGRADE

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1. THE SETTLEMENT PLATE SOULD BE PLACED ON THE SUBGRADE, AND THE BASELINE THE SETTLEMENT PLATE SOULD BE PLACED ON THE SUBGRADE, AND THE BASELINE ELEVATION OF THE PLATE AND THE RISER SHOULD BE RECORDED BEFORE FILL PLACEMENT. AT LEAST TWO SETS OF READINGS SHOULD BE TAKEN TO ESTABLISH THE BASELINE ELEVATIONS. 2. THE RISER AND CASING SHOULD BE EXTENDED TO REMAIN ABOVE THE FILL SURFACE. THE RISER AND CASING SHOULD BE EXTENDED TO REMAIN ABOVE THE FILL SURFACE. THE ELEVATION OF THE RISER SHOULD BE RECORDED IMMEDIATELY BEFORE AND AFTER ATTACHING AN EXTENSION. THE ELEVATION ON THE RISER SHOULD BE RECORDED DAILY DURING FILL PLACEMENT AND TWICE PER WEEK AFTER COMPLETION OF THE FILL, UNTIL SETTLEMENT HAS CEASED, OR THE FREQUENCY OF MONITORING REVISED BY THE GEOTECHNICAL ENGINEER. 3. VIBRATING WIRE PIEZOMETERS SHOULD BE INSTALLED AND MADE FUNCTIONAL NOT LESS VIBRATING WIRE PIEZOMETERS SHOULD BE INSTALLED AND MADE FUNCTIONAL NOT LESS THAN ONE WEEK BEFORE THE INSTALLATION OF WICK DRAINS. PROVIDE VIBRATING WIRE PIEZOMETERS AS MANUFACTURED BY ROCTEST, INC., GEOKON, INC., GEONOR INC., OR ACCEPTABLE EQUIVALENT. EACH ARRAY SHOULD HAVE A MINIMUM OF THREE PRESSURE SENSORS. FILTER SAND CONFORMING TO ASTM C778, STANDARD SPECIFICATION FOR STANDARD SAND, SHOULD BE USED. BENTONITE DRILLING MUD SHOULD NOT BE USED FOR INSTALLING THE VIBRATING WIRE PIEZOMETERS. AFTER COMPLETION OF INSTALLATION, THE AS-BUILT SURVEY COORDINATES FOR HORIZONTAL POSITION SHOULD BE DETERMINED TO AN ACCURACY OF +/- 0.01 FOOT. A BASELINE READING SHOULD BE ESTABLISHED BASED ON AN AVERAGE OF THREE STABLE READINGS. 4. READINGS FROM VIBRATING WIRE PIEZOMETERS SHOULD BE RECORDED A MINIMUM OF READINGS FROM VIBRATING WIRE PIEZOMETERS SHOULD BE RECORDED A MINIMUM OF FOUR TIMES PER DAY. ONCE SETTLEMENT CURVES PLATEAU AND GROUNDWATER LEVELS STABILIZE, READING FREQUENCIES ON APPROPRIATE INSTRUMENTATION MAY BE MODIFIED OR STOPPED BASED ON AGREEMENT WITH NAVFAC AND THE GEOTECHNICAL ENGINEER. 5. THREE INCLINOMETERS SHOULD BE INSTALLED AND MADE FUNCTIONAL NOT LES THAN ONE THREE INCLINOMETERS SHOULD BE INSTALLED AND MADE FUNCTIONAL NOT LES THAN ONE WEEK BEFORE THE INSTALLATION OF WICK DRAINS. A BASELINE READING SHOULD BE ESTABLISHED BASED ON AN AVERAGE OF THREE STABLE READINGS. READINGS FROM INCLINOMETERS SHOULD BE RECOURDED A TWICE PER WEEK DURING EMBANKMENT FILL PLACEMENT, ONCE PER WEE DURING SURCHARGE PERIOD. BEWEEKLY AFTER THAT DURING THE CONSTRUCTION TILL THE END OF CONSTRUCTION.

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1-IN DIAMETER STEEL RISER

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2-IN DIAMETER STEEL CASING PIPE

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