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1700 Bohns Point Road - PID: 16-117-23-22-0003
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Retaining Wall Info
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Last modified
8/22/2023 3:31:05 PM
Creation date
3/9/2020 10:34:13 AM
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x Address Old
House Number
1700
Street Name
Bohns Point
Street Type
Road
Address
1700 Bohns Point Road
Document Type
Misc
PIN
1611723220003
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° CD 112_. <br /> SCHI MNO WSKI ENGINEERS <br /> CRITERIUM-SCHIMNOWSKI ENGINEERS <br /> 161 DUNBAR WAY <br /> MAHTOMEDI,MN 55115 <br /> TEL 651779-7700 <br /> FAX 651779-7114 <br /> www.criterium-schimnowski.com <br /> February 28, 2018 <br /> (Revised April 4, 2018) <br /> Lincoln Danforth <br /> Yardscapes, Inc. <br /> Harriet Avenue South <br /> Bloomington, MN 55420 <br /> (� V <br /> RE: Granite Cube Retaining Wall Design <br /> 1700 Bohns Point Road <br /> Orono, Minnesota <br /> Project#18-3131 <br /> Dear Mr. Danforth: <br /> This letter includes important details regarding the attached design for the granite stone retaining wall <br /> typical engineered section at the above location. This revised design is based on a wall layout plan <br /> provided by you dated March 15, 2018. <br /> The attached typical section(s) should be referenced for construction details. Special note should be <br /> made of the wall embedment depth and the geosynthetic fabric (geogrid) length as measured from the <br /> front face of the wall if applicable. <br /> Refer to industry standard practice references for installation information, specifications, and details. <br /> - Stones shall be placed to avoid continuous joint planes in vertical directions. <br /> - Each stone shall bear on two or more rocks below it with good flat-to-flat contact. <br /> - Compact any structural fill place behind the drainage zone to 95% standard proctor. <br /> - Install woven landscape fabric behind the stone to limit soil migration through the wall face. <br /> - Optional drainage stone shall consist of clean 3/4"to 1.5" crushed stone <br /> The design of the wall system is specific to the following parameters: <br /> • Location: South side of structure at shoreline with a similar single-wall configuration to the <br /> existing wall on the south side of the structure. <br /> • Exposed height: 8 feet max. total height <br /> • Minimum embedment depth = 12", or as noted <br /> • Soil conditions: Silt/Clay, friction angle=28.0 degrees, unit weight of 125.0 Ib/ft3 <br /> • Allowable soil bearing capacity=2,000 psf <br /> • Surcharge loads behind the wall: None <br /> • Slope at top of wall: 10:1 <br /> • Slope at bottom of lower wall: 2:1 <br /> • Boulder sizes: Granite rectangular boulders (10"H, 18"W, 24"D, typical minimum dimensions) <br /> • Geosynthetic Reinforcement Fabric Type: Mirafi 3XT or equivalent <br /> • Drainage pipe: Required <br /> LICENSED <br /> PROFESSIONAL <br /> ENGINEERS <br /> HOME&BUILDING INSPECTIONS <br /> STRUCTURAL EVALUATIONS <br /> ASSOCIATION RESERVE/TRANSITION STUDIES <br /> RESIDENTIAL/COMMERCIAL <br /> RETAINING WALL DESIGN&EVALUATIONS <br />
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