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5
<br />S4
<br /> ELEVATION
<br />PLACE BOULDERS ON TWO
<br />BOULDERS IN THE LAYER
<br />BELOW AS MUCH AS
<br />POSSIBLE
<br />HEIGHT AND LENGTH OF
<br />BOULDERS MAY VARY -
<br />DIMENSION SHOWN ON
<br /> SECTIONS IS THE CRITICAL
<br />MINIMUM DEPTH OF BOULDER
<br />1
<br />S4
<br /> REFERENCE PLAN
<br />SURVEY SHOWN FOR LOCATION
<br />REFERENCE ONLY
<br />RELATIVELY LEVEL
<br />2
<br />S4
<br /> SECTION
<br />5'-0" BOULDER
<br />RETAINING WALL
<br />24" MIN.
<br />TYP.
<br />DRAIN TILE TO DAYLIGHT
<br />FILTER FABRIC
<br />AS REQ'D
<br />(SEE NOTE 18 ON S4)
<br />PROVIDE 12" DEPTH OF
<br />DRAINAGE MEDIUM
<br />BEHIND BOULDERS
<br />5'-0" MAX.5
<br />S4
<br />9.46° MIN.
<br />2
<br />12
<br />0'-10" SETBACK
<br />AT 5'-0" HEIGHT
<br />BURY FIRST BOULDER
<br />LAYER 12" MIN.
<br />VERIFY FENCING /
<br />RAILING REQUIREMENTS,
<br />IF ANY, BY OTHERS
<br />6" CLAY CAP
<br />PROVIDE 6" MIN. DEPTH
<br />COMPACTED GRAVEL OR
<br />GRANULAR BASE
<br />(36" WIDTH)
<br />COMPACTED FILL
<br />RELATIVELY LEVEL
<br />SCOPE
<br />DESIGN AND DETAIL OF THE PROPOSED BOULDER RETAINING WALLS AT A SINGLE-FAMILY RESIDENCE UNDER CONSTRUCTION. THIS DESIGN IS BASED ON THE PROPOSED SURVEY PREPARED BY SATHRE-BERGQUIST
<br />LAST DATED 3-5-24. CONSTRUCTION IS TO BE DONE IN ACCORDANCE WITH THESE DRAWINGS, STANDARD INDUSTRY PRACTICE, AND THE REQUIREMENTS OF THE CODE.
<br />GENERAL NOTES
<br />1.ALL INFORMATION IS TO BE VERIFIED PRIOR TO THE START OF CONSTRUCTION. CITY INSPECTIONS ARE TO BE CONDUCTED TO VERIFY CONFORMANCE WITH THESE DOCUMENTS. ALL EXISTING CONDITIONS AND
<br />CONTOURS ARE TO BE FIELD VERIFIED AND ALL DRAINAGE IS TO BE VERIFIED. IF ANY DRAINAGE CONCERNS OR SITE DESIGN CONCERNS ARISE DURING CONSTRUCTION, CONSULT THE SITE DESIGN ENGINEERS,
<br />SATHRE-BERGQUIST FOR REQUIREMENTS, AND NOTIFY THE HANSON GROUP.
<br />2.IN PREPARATION OF WALL DESIGN, SOIL STRENGTH PARAMETERS WERE ASSUMED . IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO VERIFY THE SOIL STRENGTH PARAMETERS ARE REPRESENTATIVE OF THE
<br />SOILS AVAILABLE FOR WALL CONSTRUCTION AT THE SPECIFIC RETAINING WALL LOCATION. IF THE SOIL STRENGTH PARAMETERS ARE FOUND TO BE INCONSISTENT WITH THOSE ASSUMED, THIS DESIGN IS NO
<br />LONGER VALID AND IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO NOTIFY THE HANSON GROUP SO THE RETAINING WALL SYSTEM CAN BE REDESIGNED. FAILURE TO NOTIFY THE HANSON GROUP MAY RESULT
<br />IN AN INADEQUATE RETAINING WALL.
<br />3.DESIGN SOIL PARAMETERS: RETAINED SOIL (IMPORT OR NATIVE) =30 DEGREES MIN, g=115± PCF, SAND WITH SOME FINES ALLOWED, ALLOWABLE SOIL BEARING PRESSURE - 2,000 PSF. FIELD VERIFY PRIOR TO
<br />STARTING CONSTRUCTION.
<br />4.ALL EXCAVATIONS SHOULD HAVE PROPER OVERSIZING AND MAINTAIN SAFE SLOPES IN ACCORDANCE WITH ALL OSHA REQUIREMENTS. CONTRACTOR IS TO CONSULT w/ A GEOTECHNICAL ENGINEER AS REQUIRED.
<br />5.THIS SET OF BOULDER RETAINING WALL PLANS ARE BASED ON INFORMATION BY THE LANDSCAPING CONTRACTOR AND PROVIDED SURVEY PREPARED BY SATHRE-BERGQUIST. NO NEWER SITE PLAN OR SURVEY
<br />HAS BEEN PROVIDED TO VERIFY EXISTING OR PROPOSED SITE INFORMATION. THE CONTRACTOR IS TO WORK WITH SOLUTION BLUE TO COORDINATE THE SITE DESIGN. IF OTHER PLANS ARE PRODUCED THAT
<br />CONTAIN DIFFERENT INFORMATION THAN THAT REFERENCED, THIS PLAN MAY NEED TO BE REVISED AND/OR THE WALLS MAY NEED TO BE REDESIGNED.
<br />6.LOCATION OF THE RETAINING WALLS IN RELATION TO PROPERTY LINES, UTILITY EASEMENTS, WATERSHED EASEMENTS, OR ANY OTHER TYPE OF EASEMENTS ARE THE RESPONSIBILITY OF THE BUILDER. THE
<br />HANSON GROUP ASSUMES NO LIABILITY FOR THE LOCATION OF THE BOULDER RETAINING WALLS OR IF CONSTRUCTION OF THE PROPOSED BOULDER RETAINING WALLS ENCROACH ANY PROPERTY LINES OR
<br />EASEMENTS.
<br />7.IT IS IMPERATIVE THAT THE SITE SURVEYING OF THE BOULDER RETAINING WALLS BE BASED ON SURVEYED SITE PLANS AND NOT PROFILE PLANS OR SECTIONS DONE BY THE HANSON GROUP. SURVEYING OF THE
<br />BOULDER RETAINING WALLS MUST TAKE INTO ACCOUNT THE DESIGN BATTER INDICATED ON THE ENCLOSED PLANS AND DETAILS. FAILURE TO TAKE INTO ACCOUNT WALL BATTER FOR THE BOULDER RETAINING
<br />WALL SURVEYING WILL PRODUCE INCORRECT LOCATIONS OF ALL TOP OF WALLS AND SHALL BE CORRECTED AT NO COST TO THE HANSON GROUP.
<br />8.WALL GEOMETRY, LOCATIONS, SLOPES AND SURCHARGE LOADS FOR THE BOULDER RETAINING WALLS WERE ASSUMED FROM THE PROJECT PLANS REFERENCED ABOVE. IF CONDITIONS VARY GREATLY IN THE
<br />FIELD FROM THOSE SHOWN ON THIS PLAN, THE HANSON GROUP MUST BE NOTIFIED PRIOR TO CONSTRUCTION OF THE BOULDER RETAINING WALLS TO REVIEW THE DESIGN AND/OR PLANS. MODIFICATIONS TO THE
<br />DESIGN AND/OR PLANS MAY BE REQUIRED AFTER THE REVIEW, AND MAY TAKE UP TO TEN BUSINESS DAYS TO COMPLETE.
<br />9.THE HANSON GROUP'S SCOPE IS LIMITED TO THE DESIGN OF THE ITEMS LISTED IN THE PROJECT SCOPE ABOVE. DESIGN OF THE REMAINING ELEMENTS, INCLUDING DRAINAGE, EROSION CONTROL, GLOBAL SLOPE
<br />STABILITY, ETC. IS BY OTHERS. CONTACT THE HANSON GROUP SHOULD ADDITIONAL ENGINEERING BE REQUESTED. NO DETAILED INSPECTIONS WERE CONDUCTED OR REQUESTED.
<br />10.THE COMPACTED BASE FOR THE BOULDER RETAINING WALLS IS TO BE BURIED INTO VIRGIN MATERIAL OR ENGINEERED FILL AS SHOWN IN THE WALL SECTIONS ALONG THE ENTIRE LENGTH OF THE WALL.
<br />11.MINOR SURCHARGE LOADING ABOVE WALLS HAVE BEEN DESIGNED FOR (50 PSF UNLESS NOTED OTHERWISE).
<br />12.GRADE AT THE TOP OF THE WALL IS TO BE RELATIVELY LEVEL (5% MAX. GRADE) UNLESS NOTED OTHERWISE. GRADE AT THE BOTTOM OF THE WALL IS TO BE RELATIVELY LEVEL (5% MAX. GRADE) UNLESS NOTED
<br />OTHERWISE. SEE SECTIONS FOR SPECIFIC DESIGN CONDITIONS BASED ON GRADING PLANS.
<br />13.THE DRAINAGE MEDIUM IS TO BE COMPACTED OVER THE FULL HEIGHT OF THE WALL AND CAPPED WITH A 6" THICK CLAY LAYER. PROPER COMPACTION PROVIDES FOR SOLID PACKED MATERIAL, WHICH TENDS NOT
<br />TO SHIFT BEHIND THE WALL.
<br />14.INSTALL DRAINTILE AT THE BASE OF THE WALL. DRAINTILE IS TO DRAIN TO DAYLIGHT AT EACH END OF THE WALL AND INTERMEDIATELY USING WEEPS SPACED AT NO GREATER THAN TEN FEET ON CENTER OR AS
<br />REQUIRED. DRAINTILE AND DRAINAGE ARE ESSENTIAL TO KEEP THE FLUID PRESSURE REDUCED BEHIND THE WALL.
<br />15.WALL LAYOUT, ELEVATIONS, PROPERTY BOUNDARIES, GRADING, EXCAVATION, GLOBAL SLOPE STABILITY, VERIFICATION OF INFORMATION, AS WELL AS DRAINAGE IS BY OTHERS. SITE ENGINEER OR GEOTECHNICAL
<br />ENGINEER COULD PROVIDE SITE VERIFICATION TO VERIFY THAT NO GLOBAL STABILITY CONCERNS ARE PRESENT. THESE DOCUMENTS APPLY TO STRUCTURAL DESIGN ASPECTS OF THE BOULDER RETAINING WALL
<br />ONLY.
<br />16.IT IS RECOMMENDED CONTRACTOR HAS SUB BASE TESTING FOR COMPACTION. 95% STANDARD PROCTOR DENSITY IS TO BE ACHIEVED AT A MINIMUM FOR ALL MATERIALS.
<br />17.INSTALL SMALL ROCKS BETWEEN LARGER BOULDERS TO PROVIDE A SOLID WALL AND TO PROVIDE SUPPORT FOR THE DRAINAGE MEDIUM.
<br />18.DEPENDING ON THE DRAINAGE MEDIUM AND ON-SITE MATERIAL, THE CONTRACTOR WILL EITHER INSTALL FILTER FABRIC BEHIND THE DRAINAGE MEDIUM IN FRONT OF THE BACKFILL TO ENSURE THAT THE BACKFILL
<br />MATERIAL DOES NOT WORK OUT INTO THE DRAINAGE MEDIUM (OPTIMAL FOR A GRAVEL DRAINAGE MEDIUM) OR BETWEEN THE BOULDERS AND DRAINAGE MEDIUM (OPTIMAL FOR A SAND DRAINAGE MEDIUM).
<br />MATERIALS
<br />BOULDERS:BOULDERS - GEOMETRY VARIES - DETAILS
<br />ON-SITE FILL: SAND WITH SOME FINES PERMITTED (g=115 PCF, EQUIVALENT FRICTION ANGLE = 30°) UNLESS NOTED OTHERWISE
<br />DRAINAGE MEDIUM / BACKFILL:100% SAND OR GRAVEL MATERIAL (NO FINES) (g=115 PCF, EQUIVALENT FRICTION ANGLE = 34°)
<br />BOULDER DENSITY:g=165 PCF
<br />ALLOWABLE SOIL BEARING PRESSURE: 2,000 PSF (ASSUMED)
<br />SURCHARGE:50 PSF
<br />CODES
<br />2020 MINNESOTA STATE BUILDING CODE
<br />BOULDER DIMENSIONS SHOWN ARE
<br />MINIMUM DEPTH OF BOULDERS AS
<br />MEASURED INTO RETAINED SOIL.
<br />HEIGHT AND WIDTH DIMENSIONS
<br />PARALLEL WITH WALL MAY VARY
<br />9'-
<br />0
<br />"
<br />
<br />M
<br />A
<br />X
<br />
<br />W
<br />A
<br />L
<br />L
<br />TY
<br />P
<br />.
<br />4
<br />S4
<br />RELATIVELY LEVEL
<br />3
<br />S4
<br /> SECTION
<br />7'-0" BOULDER
<br />RETAINING WALL
<br />30" MIN.
<br />TYP.
<br />DRAIN TILE TO DAYLIGHT
<br />FILTER FABRIC
<br />AS REQ'D
<br />(SEE NOTE 18 ON S4)
<br />PROVIDE 12" DEPTH OF
<br />DRAINAGE MEDIUM
<br />BEHIND BOULDERS
<br />7'-0" MAX.5
<br />S4
<br />9.46° MIN.
<br />2
<br />12
<br />1'-2" SETBACK
<br />AT 7'-0" HEIGHT
<br />BURY FIRST BOULDER
<br />LAYER 18" MIN.
<br />VERIFY FENCING /
<br />RAILING REQUIREMENTS,
<br />IF ANY, BY OTHERS
<br />6" CLAY CAP
<br />PROVIDE 6" MIN. DEPTH
<br />COMPACTED GRAVEL OR
<br />GRANULAR BASE
<br />(42" WIDTH)
<br />COMPACTED FILL
<br />RELATIVELY LEVEL
<br />RELATIVELY LEVEL
<br />4
<br />S4
<br /> SECTION
<br />9'-0" BOULDER
<br />RETAINING WALL
<br />36" MIN.
<br />TYP.
<br />DRAIN TILE TO DAYLIGHT
<br />FILTER FABRIC
<br />AS REQ'D
<br />(SEE NOTE 18 ON S4)
<br />PROVIDE 12" DEPTH OF
<br />DRAINAGE MEDIUM
<br />BEHIND BOULDERS
<br />9'-0" MAX.5
<br />S4
<br />9.46° MIN.
<br />2
<br />12
<br />1'-6" SETBACK
<br />AT 9'-0" HEIGHT
<br />BURY FIRST BOULDER
<br />LAYER 24" MIN.
<br />VERIFY FENCING /
<br />RAILING REQUIREMENTS,
<br />IF ANY, BY OTHERS
<br />6" CLAY CAP
<br />PROVIDE 6" MIN. DEPTH
<br />COMPACTED GRAVEL OR
<br />GRANULAR BASE
<br />(48" WIDTH)
<br />COMPACTED FILL
<br />RELATIVELY LEVEL
<br />FILL SPACES w/
<br />SMALLER ROCKS
<br />Project Number:
<br />Date:S41Sheets: of
<br />DescriptionDateRevision
<br />5851 Cedar Lake Road
<br />Suite 202
<br />St. Louis Park, MN 55416
<br />Tel 612-708-3572
<br />www.hansongroupmn.com
<br />Print Name:
<br />Signed:
<br />License Number:
<br />Trevor Axner
<br />45470Date:
<br />I hereby certify that this plan, specification or report
<br />was prepared by me or under my direct supervision
<br />and that I am a duly Licensed Professional Engineer
<br />under the laws of the State of Minnesota.
<br />COPYRIGHT HANSON GROUP, LLC 2024©
<br />Eskuche Design Group
<br />18318 Minnetonka Blvd
<br />Deephaven, MN 55391
<br />1
<br />May 2, 2024
<br />4.089
<br />PLANS SHOWN LIGHT IN BACKGROUND ARE FOR
<br />LOCATION REFERENCE ONLY. PLAN NOTES AND
<br />ELEMENTS SHOWN LIGHT MAY NOT NECESSARILY
<br />SUPPORT THE HANSON GROUP'S DESIGN.
<br />Saga Hill Residence
<br />4423 N Shore Dr
<br />Orono, MN
<br />5-8-24
<br />7'-
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<br />3
<br />S4
<br />5'-
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<br />2
<br />S4
<br />9'-
<br />0
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<br />4
<br />S4
<br />7'-
<br />0
<br />"
<br />
<br />M
<br />A
<br />X
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<br />L
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<br />3
<br />S4
<br />5'-0" M
<br />A
<br />X
<br />
<br />W
<br />A
<br />L
<br />L
<br />TYP.
<br />2
<br />S4
<br />6
<br />S4
<br /> REFERENCE PLAN
<br />SURVEY SHOWN FOR LOCATION
<br />REFERENCE ONLY
<br />Additional Boulder Walls Added5-8-241
<br />7'-0" MAX WALLTYP.3S45'-0" MAX WALLTYP.2S45'-0" MAX WALLTYP.2S4
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