9908 18TH AVE W 2022 Plans 2025-03-28

DESIGN NOTES: The following design assumptions were used: Internal angle of friction for reinforced soil=32 degrees(design only-see Material Note"F") Unit weight of reinforced soil=125 pcf to Maximum wall height=9.33 feet Batter of wall=1 H:10V } Surcharge=Footing Load or Traffic Surcharge 0 Z TECHNICAL SPECIFICATIONS FOR MECHANICALLY STABILIZED LOCK+LOAD RETAINING WALLS GENERAL: W O A. The work involves the supply and installation of soil reinforced retaining walls.The Concrete Panels and Counterforts will consist of Lock+Load Stone.Counterfort and a 0) Geogrid are the types of soil reinforcement.The work will include,but is not limited to: fn C A-1 excavation to the grades shown on the civil drawings Q N (� A-2 supply and installation of geogrid reinforcement chain Link > Fence Post(By Others) — A-3 supply and installation of drainage fill and piping Fence�> Embedded in Sleeve, Z_ A-4 supply and installation of segmental Lock+Load Stones or Guardrail > 1"Min.Clearance Each Side A-5 supply and installation of retained and reinforced soil fill 6'-0" AS Required > of Post (10 O LL y Max. >) it it r B. The walls shall be installed on undisturbed Native Soils or Structural Fill,as > Z appropriate. 5'ceofTn. pBl NOTE: Wall Alignment and Heights To Be c6 W > To Face of Top Block MATERIALS > �', � Established By Contractor/ Surveyor. J m Lu A. Concrete Panels and Counterforts are locked together to form a"Stone".The retaining walls have been designed on the basis of Lock+Load Retaining Wall a'Max. 2'-6^ Ac Structural Fill �_______, Y "Stones".Stones are to be purchased from a licensed Lock+Load manufacturer. wall Height Min. m The Lock+Load trademark on each pallet identifies Lock+Load products. __ ogQ (See Materials Note F) UO 3 0 B. Information on the purchase of Lock+Load products can be obtained through: 18"of well compacted Retained oeo° Face Gravel(See Materials Pacific LOCK+LOAD,Inc., - - e4�o Note E) —_III Soils Telephone:(503)682-2868 III— e° '° =III— #of Wall Geogrid Layers Website:www.pacificlocknload.com ` ::.:°r?'^°d` Panels Height Length NOTE:Wall Toe Backfill •%:::::.:::...::...._. 4"Perforated Drainpipe (feet) (feet) 1 2 3 4 5 6 7 8 9 10 11 12 must be placed during or immediately y Surround with 1 cf of C. Geogrid-See Geogrid Schedule. after Wall Construction. 12"( inJ III= = Washed Rock per lineal foot 3 4.00 6.00 A - - - - - - - - - - - — = *\ of Pipe NOTE:Geotechnical Engineer shall D. Drainage Fill-Drainage Fill placed around and above the perforated drainage pipe 2"-4"Leveling Pad 11 competent Subgrade evaluate the need for Supplementary 4 5.33 6.00 A A shall consist of clean aggregate between 3/4 inch and 1 1/2 inch. (See Materials Note G) (Geotechnical Engineer to Confirm) Drainage behind the Reinforcement Zone during Construction. 5 6.67 7.00 A A - - - - - - - - -E. Face Gravel-3/4 inch to 1 inch Clean Crushed Rock,no fines.Face Gravel shall be compacted thoroughly to ensure no settlement of panels. STRUCTURAL FILL 6 8.00 8.00 A A A F. Reinforced Backfill-Suitable granular material approved by the Geotechnical Engineer GRAVITY WALL CONDITION 7 9.33 10.00 A A A - - - - - - - - - G Leveling Pad-The Leveling Pad shall consist of angular,crushed aggregate of (4 Foot Max. Height) maximum size of 3/4 inch.The Leveling Pad Fill may be single size or may be well GEOGRID: A=Miragrid 5XT graded containing a maximum of 5%passing the#200 sieve. NOT-TO-SCALE EXECUTION A. Contractor shall excavate to the lines and grades shown on the construction drawings. The Geotechnical Engineer should observe the excavation prior to the placement of the leveling material or fill soils. B. Over-excavation of deleterious soils or rock shall be replaced with material meeting the specifications described in the section"Material G"above,and compacted to 95 of ASTM D-1557-91(Modified Proctor)within 2%of the optimum moisture content of the soil. Is C. The first course of concrete Lock+Load Stones shall be placed on the Leveling Pad and the alignment and level checked. Fence Post(By others) Chain Link Embedded in Sleeve, D. Stones shall be laced with the to of the panel level and parallel to the wall face. Fence 1"Min.Clearance Each Side P P P P or Guardrail of Post The Counterfort Base installs horizontal and perpendicular to the face of the retaining As Required Well. Max. 5'Min.Setback l " 22" Max. To Face of Top Block 27 E. Geogrid shall be oriented with the highest strength axis perpendicular to the wallAll alignment. s„ m l o �� 1.2s^t F. Geogrid reinforcement shall be placed at the levels and to the lengths shown on the e° s° drawings beginning at the back of the Lock&Load Panels. "^a°°g -- --i = Geogrid Length -------� — TOP VIEW G The geogrid shall be laid horizontally In the direction perpendicular to the face of the 2 s" — s�75 ► g 9 y P � "" Min. ° (See Geogrid Schedule) IF retaining wall.The geogrid shall be pulled taut,free of wrinkles and anchored prior to = � III SIDE VIEW backfill placement on the geogrid. L — Geogrid Layer 2 III 7 65„ 32" m °,°°°°. Reinforced �o og°= Z H. The geogrid reinforcement shall be continuous throughout their embedment lengths. H = Retained rc a° owineor Spliced connection between shorter feces Of geogrid IS not permitted. wall Height 2.67' S°'/ D�o — LL m FRONT VIEW Conneding Loop P P 9 9 P g 3 typ) (See Materals - - Soilsliil- ,I I. The drainage pipe discharge points shall be connected to approved discharge. 24"Min Note F) _ Drainage Blanket 27" Geo nd La er 1.% °_ (As Necessary per "Embedment shall be 24"minimum _} ,gys ��y4� �8 Geotechnical Engineer) 16" J. Reinforced and Retained Backfill shall be placed,spread and compacted in such a for sloped toe condition and for — wall heights over 20 feet. 12"Min. 8 90= m manner that minimizes the development of slack in the geogrid. 6"of well compacted Geogrid Reinforcement eP°y a Face Gravel(See Materials ;gg (See Geogrid Schedule) 4, 80 �• a.75• o m" o K. Reinforced and Retained Backfill shall be laced and com acted in lifts not to III ° °°00 ° Note E) ;I P P °x.o x•e x.o n°o S•eef so �� e.�s• �. exceed 8 inches where hand compaction equipment is used and not more than 12 inches — °D�N9�u°%:a°s°:Qa°e°;ti:,y e 2N 04 ► n where heavy compaction equipment is used.FIRST-compact over tail of Counterfort NorE:Wall Toe Backfill ° NOTE:Geotechnical Engineer shall :�'q �� 4"PerforatedDrainpipe evaluate the need for Supplementary TOP VIEW .� then awe from the retaining wall structure.Hand operated compaction equipment roust be placed during or immediately p Y 9 P PSurround with1cfof Drainage behind the Reinforcement REINFORCEMENT BAR 0 after Wall Construction. III— —III A (700 Ib.to 1,000 Ib J Vibratory Plate shall be used to compact face gravel at wall face. Washed Rock per lineal foot Zone during Construction. Connecting N BENDING DETAIL Laop M of Pipe Poly Fiber Reinforced 4.5" � .di ?: L. Reinforced and Retained Backfill shall be compacted to 95%of the maximum density 2"-4"Leveling Pad 1 1/2"fiber(4#/yd.) IV 0 04 o Competent Subgrade 6,000 psi concrete O N as determined byASTM D-1557-91(Modified Proctor)or equivalent.The moisture (See Materials Note G) (Geotechnical Engineer to Confirm) Casting Tolerance SIDE VIEW ^> to content of the backfill material prior to and during compaction shall be uniformly N'a M distributed throughout each layer and shall be within 2 percentage points of the NOTES: •a m optimum moisture content. 4 p N TYPICAL WALL SECTION 1.Installation to be completed in accordance with manufacturers w specifications. 0 A M. Hand-operated equipment(700 lb.to 1,000 lb.Vibratory Plate)shall be used within Cl. mZZ 26 inches of the front face of the concrete facing. NOT-TO-SCALE 2.Do not scale from drawings. < _ m N. Tracked construction equipment shall not be operated directly upon the geogrid PICTORIAL VIEW LOCK+ LOAD PANEL E reinforcement.A minimum fill thickness of 6 inches is required prior to operation of tracked vehicles over the geogrid. NOT-TO-SCALE m NOTES: 7 w Z m U O. Rubber tired equipment may pass over the geogrid reinforcement at slow speeds 1 ' WA . Installation to be completed in accordance with manufacturer's less than 5 mph.Sudden braking and sharp turning shall be avoided. specifications. P. At the end of each day of operation,the contractor shall slope the last lift of 2. Do not scale from drawings. r'> _ Z Sheet No. reinforced backfill away from the wall units to direct runoff away from the wall face. The contractor shall not allow surface runoff from adjacent areas to enter the wall LOCK + LOAD COUNTERFORT -o " 1 A ,w 53803 � �0, RE GISTE RS �� V IY/_I construction site. NOT-TO-SCALE SS/ONAIENG 11/11/2022