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MATERIAL NOTES 1. Concrete Retaining Wall Units: "Anchor Diamond Pro Retaining Wall Units" as manufactured by Oldcastle Coastal under license from Anchor Wall Systems. 2. Geosynthetic Reinforcement: Miragrid 3XT, as shown on the Drawings. 3. Leveling Pad Base a. Aggregate Base: Crushed stone or granular fill meeting the following gradation as determined in accordance with ASTM D448: Sieve Size Percent Passing 1 Inch 100 No. 4 35 to 70 No. 40 10 to 35 No. 200 3 to 10 b. Base Thickness: 6 inches (minimum compacted thickness). 4. Drainage Aggregate: Clean crushed stone or granular fill meeting the following gradation as determined in accordance with ASTM D448. Sieve Size Percent Passing 1 Inch 100 3/4 Inch 75 to 100 No. 4 0 to 60 No. 40 0 to 50 No. 200 0 to 5 5. Reinforced Fill: Soil free of organics and debris and consisting of either GP, GW, SP, SW, or SP-SM type, classified in accordance with ASTM D2487 and the USCS classification system and meeting the following gradation: Sieve Size Percent Passing 1 Inch 100 3/4 Inch 70 to 100 No. 4 30 to 100 No. 40 15 to 100 No. 100 0 to 65 No. 200 0 to 12 a. PI<6. b. Unsuitable soils are organic soils and those soils classified as SM, SC, CL, CH, OH, MH, ML, OL, or PT. 6. Impervious Material: Clayey soil (permeability of less than 10-6 cm/sec) or other barrier which will prevent percolation into the reinforced soil zone of the retaining wall. 7. Drainage Pipe: Perforated or slotted PVC or corrugated HDPE pipe manufactured in accordance with D3034 and/or ASTM F405. The pipe may be covered with a geotextile filter fabric to function as a filter. 8. Construction Adhesive: Exterior grade adhesive as recommended by the retaining wall manufacturer. 9. Filter Fabric: Mirafi Type 140N or equal. FOUNDATION SOIL NOTES 1. Excavate foundation soil as required for footing or base dimension shown on the Drawings, or as directed by the Project geotechnical engineer. 2. The Owner shall retain the services of a geotechnical engineer to examine foundation soil to ensure that the actual foundation soil strength meets or exceeds that -indicated on the Drawings. Unsuitable soils are defined as any soil that does not have sufficient bearing capacity or will cause excessive wall settlement. Remove soil not meeting the required strength. Oversize resulting space sufficiently from the front of the block to the back of the reinforcement, and backfill with suitable compacted backfill soils. 3. The Owner shall retain the services of a geotechnical engineer to determine if the foundation soils will require special treatment or correction to control total and differential settlement. 4. Fill over -excavated areas with suitable compacted backfill, as recommended by the Project geotechnical engineer. C iHUYC',�i� 1 f No 6104'� .�.. =o �11! STATE OF !` 11110- 4-04 ANCHOR WALL ENGINEERING, LLC 5909 BAKER ROAD, SUITE 550 DESIGN ENGINEER: JON C. HUYCK MINNETONKA, MN 55345-5996 FLORIDA REGISTRATION: 61043 BASE COURSE NOTES 1. Place base materials to the depths and widths shown on the Drawings, upon undisturbed soils, or foundation soils prepared as di. by the project geotechnical engineer. a. Extend the leveling pad laterally at least 6 inches in front and behind the lowermost concrete retaining wall unit. b. Provide aggregate base compacted to 6 inches thick (minimum). c. Wrap toe of wall, including leveling pad, with filter fabric. 2. Compact aggregate base material to provide a level, hard surface on which to place the first course of units. 3. Prepare base materials to ensure complete contact with retaining wall units. Gaps are not allowed. ERECTION NOTES 1. Excavation support, if required, is the responsibility of the Contractor, including the stability of the excavation and its influence on adjacent properties and structures. 2. General: Erect units in accordance with manufacturer's instructions and recommendations, and as specified herein. 3. Place first course of concrete wall units on the prepared base material. Check units for level and alignment. Maintain the same elevation at the top of each unit within each section of the base course. 4. Ensure that foundation units are in full contact with the leveling pad. 5. Place concrete wall units side -by -side for full length of wall alignment. Alignment may be done by using a string line measured from the back of the block. Gaps are not allowed between the foundation concrete wall units. 6. Place 12 inches (minimum) of drainage aggregate between, and directly behind the concrete wall units. Fill voids in retaining wall units with drainage aggregate. Wrap drainage aggregate with filter fabric. Provide a drainage zone behind the wall units to within 9 inches of the final grade. Cap the reinforced zone and drainage aggregate zone with 12 inches of impervious material. 7. Install drainage pipe at the lowest elevation possible, to maintain gravity flow of water to outside of the reinforced zone. Slope the main collection drainage pipe, located just behind the concrete retaining wall units, 1 percent (minimum) to provide gravity flow to the daylighted areas. Daylight the main collection drainage pipe to an appropriate location away from the wall system at each low point or at 50 foot (maximum) intervals along the wall. 8. Remove excess fill from top of units and install next course. Ensure drainage aggregate and backfill are compacted before installation of next course. 9. Check each course for level and alignment. Adjust units as necessary with reinforcement shims to maintain level, alignment, and setback prior to proceeding with each additional course. 10. Install each succeeding course. Backfill as each course is completed. Pull the units forward until the locating surface of the unit contacts the locating surface of the units in the preceding course. Interlock wall segments that meet at corners by overlapping successive courses. Attach concrete retaining wall units at exterior corners with adhesive specified. 11. Install geosynthetic reinforcement in accordance with geosynthetic manufacturer's recommendations and the shop drawings. a. Orient geosynthetic reinforcement with the highest strength axis perpendicular to the wall face. b. Prior to geosynthetic reinforcement placement, place the backfill and compact to the elevation of the top of the wall units at the elevation of the geosynthetic reinforcement. c. Place geosynthetic reinforcement at the elevations and to the lengths shown on the Drawings. d. Lay geosynthetic reinforcement horizontally on top of the concrete retaining wall units and the compacted backfill soils. Place the geosynthetic reinforcement within one inch of the face of the concrete retaining wall units. Place the next course of concrete retaining wall units on top of the geosynthetic reinforcement. e. The geosynthetic reinforcement shall be in tension and free from wrinkles prior to placement of the backfill soils. Pull geosynthetic reinforcement hand -taut and secure in place with staples, stakes, or by hand -tensioning until the geosynthetic reinforcement is covered by 6 inches of loose fill. f. The geosynthetic reinforcements shall be continuous throughout their embedment lengths. Splices in the geosynthetic reinforcement strength direction are not allowed. g. Do not operate tracked construction equipment directly on the geosynthetic reinforcement. At least 6 inches of compacted backfill soil is required prior to operation of tracked vehicles over the geosynthetic reinforcement. Keep turning of tracked construction equipment to a minimum. h. Rubber -tired equipment may pass over the geosynthetic reinforcement at speeds of less than 5 miles per hour. Turning of rubber -tired equipment is not allowed on geosynthetic reinforcement. Scale: 0 1 NOT TO VERIFY THAT THE BAR ABOVE SCALE IS 1". IF NOT, ADJUST THE SCALE ACCORDINGLY. Proj. No: I AF 19-132 Reviewed By: I DJA PROPOSED SEGMENTAL RETAINING WALLS THE OAKS AT PASCO ZEPHYRHILLS. FLORIDA REVISION DATES (SEE SHEET W1 FOR REVISION HISTORY): TAMP, Sheet I of NOTES I W2 22 SHEET 1 PHONE: (952) 933-8855 CERT. OF AUTHORIZATION: 27077 1 Date: 19/19/19 I Drawn By: I MAH