ETTAMAR, INC. Engineers and Consultants TBPE # Joe DiMaggio Blvd. Suite 28, Bldg. 300 Round Rock, TX (512) (512) FAX

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1 RETAINING WALL CROSS-SECTION WALLS A & F ONLY N.T.S MAX HEIGHT 4"x4"x48" FULL BENCH ADJUST THE BOTTOM (OR TOP) OF WALL LOCATION TO ACCOUNT FOR WALL BATTER. OWNER SHOULD REVIEW AND APPROVE BOTTOM OF WALL LOCATION. BURY WALL 4"x4"x48" FULL B.O.W Min. 7 8 DEG. WALL BATTER T.O.W 4.5 (Min.) TOP "-8" IMPERMEABLE CLAY OR PAVING REINFORCED FILL SEE. AND 4. FOR FILL SPECIFICATIONS EMBEDMENT LENGTH REMOVE AND REPLACE WITH COMPACTED TxDOT FLEXBASE Min. BELOW BOTTOM OF FOOTING REINFORCE WITH BX TYPE AS SHOWN RETAINED Min. WRAP FILTER FABRIC OVER REINFORCED FILL Min. Min. BELOW LEVELING PAD 4 Min. PLACE LAYERS Concrete Pier SEE DETAILS (THIS SHEET) MAX HEIGHT RETAINIG WALL CROSS-SECTION WALLS B, C, D, E ONLY N.T.S 4"x4"x48" FULL BENCH Min. 4"x4"x48" FULL BURY WALL B.O.W 7 8 DEG. WALL BATTER 4" Min. T.O.W 8 Min. REINFORCED FILL SEE. AND 4. FOR FILL SPECIFICATIONS EMBEDMENT LENGTH 4.5 (Min.) TOP "-8" IMPERMEABLE CLAY OR PAVING BELOW LEVELING PAD RETAINED WRAP FILTER FABRIC OVER REINFORCED FILL PLACE LAYERS REMOVE AND REPLACE WITH COMPACTED TxDOT FLEXBASE Min. BELOW BOTTOM OF FOOTING REINFORCE REINFORCE WITH BX TYPE AS SHOWN.. MATERIAL. BACKFILL BACKFILL MATERIAL SPECIFIED BELOW SHALL BE APPROVED BY OWNER OR OWNER S REPRESENTATIVE AND SHALL MEET THE STRENGTH PARAMETERS AS DEFINED IN SECTION 5.. THE BACKFILL MATERIAL SHALL ALSO MEET THE FOLLOWING: REINFORCED FILL AND DRAINAGE FILL SHALL BE CLEAN, FREE DRAINING OR CRUSHED STONE OR CRUSHED, RECYCLED CONCRETE REINFORCED FILL MATERIAL SHALL HAVE THE FOLLOWING GRADATION: SIEVE SIZE PERCENT PASSING ¾ 75- NO. 4 NO REINFORCED BACKFILL AND RETAINED / FILL MATERIALS SHALL BE FREE OF EXCESS MOISTURE, ROOTS, MUCK, SOD, SNOW, FROZEN LUMPS, ORGANIC MATERIAL, OR OTHER DELETERIOUS MATERIALS. ALL ROCK PARTICLES AND HARD EARTH SHALL BE LESS THAN THREE INCHES IN THE LONGEST DIMENSION. REINFORCED BACKFILL MATERIALS THAT DO NOT MEET THESE CRITERIA SHALL BE CONSIDERED UNSUITABLE AND SHALL BE REMOVED.. REINFORCED FILL AND DRAINAGE FILL SHALL HAVE PH BETWEEN AND 9 PER ASTM G-5.. REINFORCEMENT SHALL BE: TYPE = MIRAFI XT TYPE = MIRAFI 5XT TYPE = MIRAFI 8XT AS SHOWN ON THE PROFILE AND CROSS SECTION ONLY..4 SEGMENTAL SHALL BE: STONETERRA 4 X 48 UNITS AS SHOWN ON THE PROFILE AND CROSS SECTION ONLY..5 RETAINING WALL DESIGN SHOWN HEREIN IS SPECIFICALLY LIMITED TO THE SCOPE ASSIGNED TO SRW ENGINEER IN THE NATIONAL CONCRETE MASONRY ASSOCIATION (NCMA) SPECIFICATIN TEK 5-A ROLES AND RESPONSIBILITIES ON SEGMENTAL RETAINIG WALL PROJECTS. ALL OTHER ROES AND RESPONSIBILITIES ARE BEYOND THE SCOPE OF THIS DESIGN..6 CONNECTORS AND ACCESSORIES SHALL BE AS RECOMMENDED AND SUPPLIED BY THE WALL MANUFACTURER..7 CONCRETE SHALL BE TXDOT CLASS C (6 PSI).8 STEEL REINFORCING SHALL BE GRADE 6.9 REQUIRED BEARING PRESSURE IS PSF. SUBGRADE SHALL BE OBSERVED BY THE PROJECT GEOTECHNICAL ENGINEER TO CONFIMR BEARING PRIOR TO CONSTRUCTION.. ALL BAR LAP SPLICES SHALL BE 5 BAR DIAMETERS, MINIMUM. REINFORCING STEEL SHALL BE ELEVATED ABOVE THE SUBGRADE WITH PREFABRICATED CHAIRS SUITABLE FOR CONCRETE USE. STONE, CONCRETE OR BRICK CHAIRS ARE NOT ACCEPTABLE.. ALL WORK SHALL BE IN CONFORMANCE WITH SECTION 4 AND 4 THE TEXAS DEPARTMENT OF TRANSPORTATION (TXDOT), STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MAINTENANCE OF HIGHWAYS, STREETS AND BRIDGES, 4 EDITION.. TECHNICAL REQUIREMENTS. THE REINFORCED BACKFILL MATERIAL(S) SHALL BE VERIFIED TO MEET THE GRADATION AND OTHER REQUIREMENTS OF SECTION. PRIOR TO PROCEEDING WITH CONSTRUCTION.. PRIOR TO CONSTRUCTION OF THE, THE CONTRACTOR SHALL CLEAR AND GRUB THE REINFORCED BACKFILL ZONE AREA, REMOVING TOP, BRUSH, SOD OR OTHER ORGANIC OR DELETERIOUS MATERIAL, ANY UNSUITABLE MATERIAL SHALL BE OVER EXCAVATED, REPLACED AND COMPACTED WITH BACKFILL MATERIAL TO PROJECT SPECIFICATIONS, OR AS OTHERWISE DIRECTED BY THE PROJECT GEOTECHNICAL ENGINEER.. PRIOR TO FILL PLACEMENT, FOUNDATION SHALL BE INSPECTED BY THE PROJECT GEOTECHNICAL ENGINEER. THE CLIENT SHALL GAIN CONFIRMATION FROM THE PROJECT GEOTECHNICAL ENGINEER THAT THE SITE HAS BEEN PROPERLY PREPARED, THAT THE FOUNDATION MATERIAL IS SUITABLE AND THAT THE DESIGN PARAMETERS LISTED IN SECTION 4. ARE APPROPRIATE..4 FILL SHALL BE PLACED IN HORIZONTAL LAYERS, NOT EXCEEDING 8 INCHES IN UNCOMPACTED THICKNESS FOR HEAVY COMPACTION EQUIPMENT. FOR ZONES WHERE COMPACTION IS ACCOMPLISHED WITH LIGHTWEIGHT COMPACTION EQUIPMENT, FILL SHALL BE PLACED IN LAYERS NOT EXCEEDING 6 INCHES IN UNCOMPACTED THICKNESS. ONLY LIGHTWEIGHT EQUIPMENT SHALL BE USED WITHIN THREE FEET OF THE BACK FACE OF THE WALL..5 FILL IN THE REINFORCED FILL ZONE SHALL BE COMPACTED AS SPECIFIED BY PROJECT SPECIFICATIONS OR TO A MINIMUM OF 95% OF THE MAXIMUM STANDARD PROCTOR DENSITY (AASHTO T-99), AT A MOISTURE CONTENT NO GREATER THAN PERCENTAGE POINTS AND NO LESS THAN PERCENTAGE POINT DRY OF OPTIMUM..6 TESTING METHODS, FREQUENCY AND VERIFICATION OF MATERIAL SPECIFICATIONS SHALL BE THE RESPONSIBILITY OF THE PROJECT GEOTECHNICAL ENGINEER..7 A COMPLETE SET OF CONSTRUCTION DRAWINGS, CONTRACT SPECIFICATIONS AND BLOCK MANUFACTURER S INSTALLATION INSTRUCTIONS SHALL BE ONSITE AT ALL TIMES DURING THE CONSTRUCTION OF THE.. DRAINAGE. AT THE END OF EACH WORKDAY, THE BACKFILL SURFACE SHALL BE GRADED AWAY FROM THE FRONT FACE OF THE WALL A MINIMUM OF PERCENT AND A TEMPORARY BERM SHALL BE CONSTRUCTED NEAR THE WALL CREST TO PREVENT SURFACE WATER FROM OVERTOPPING THE WALL.. AT THE END OF EACH WORKDAY, BACKFILL SURFACE SHALL BE COMPACTED WITH A SMOOTH WHEEL ROLLER TO MINIMIZE PONDING OF WATER AND SATURATION OF BACKFILL.. THE ENGINEERING, DESIGN, ANALYSIS DETAILING, AND MITIGATION OF BOTH SURFACE DRAINAGE AND SEEPAGE OF GROUND WATER IS BEYOND THE SCOPE OF THIS DESIGN..4 PERMANENT SURFACE WATER DESIGN IS BEYOND THE SCOPE OF THIS DESIGN, AND IS BY OTHERS. 4. DESIGN PARAMETERS 4. DESIGN OF THE IS BASED UPON THE FOLLOWING PARAMETERS: REINFORCED BACKFILL (FREE DRAINING CRUSHED STONE) EFFECTIVE FRICTION ANGLE (DEG.) 4. ADDITIONAL LOADINGS: 4.. BUILDING LOADS 4.. TRAFFIC SURCHARGE 4.. SEISMIC LOADING EFFECTIVE COHESION MOIST UNIT WEIGHT 6 DEG PSF 5 PCF RETAINED 5 DEG PSF 5 PCF FOUNDATION. ONSITE CLAY. DEG. PSF. UNDERLYING. DEG. 5 PSF DEBRIS 4. FACTORS OF SAFETY (F.O.S.): 4.. EXTERNAL STABILITY: MINIMUM FACTOR OF SAFETY FOR SLIDING AT BASE =.5 MINIMUM FACTOR OF SAFETY FOR OVERTURNING =.5 MINIMUM FACTOR OF SAFETY FOR BEARING =. 5 PCF 4.4 HYDROSTATIC DESIGN: GROUNDWATER / PHREATIC SURFACES NOT CONSIDERED IN WALL DESIGN. AS SHOWN IN THE PROJECT GEOTECHNICAL REPORT, WATER SURFACE ASSUMED TO BE SUFFICIENTLY BELOW THE BOTTOM OF WALL AS NOT TO INFLUENCE INTERNAL AND EXTERNAL STABILITY. 4.5 GENERAL ASSUMPTIONS 4.5. ALL WALL LAYOUTS ARE BASED UPON INFORMATION PROVIDED BY THE CLIENT. THE CLIENT SHOULD VERIFY THAT THE LAYOUT AND GEOMETRIC INFORMATION SHOWN HEREIN IS ACCURATE. ETTAMAR ASSUMES NO LIABILITY FOR THE ACCURACY OF THE GEOMETRIC AND OR LAYOUT INFORMATION RETAINING WALLS ARE DESIGNED TO SUPPORT STATIC LOADINGS AND ADDITIONAL SURCHARGES AS SHOWN IN 4., ONLY. CLIENT SHALL VERIFY THAT THE WALL STRUCTURE IS ISOLATED FROM ALL OTHER STRUCTURAL, VEHICLE AND OTHER LIVE AND DEAD LOADS AND SURCHARGES DURING AND AFTER CONSTRUCTION. 5. SPECIAL PROVISIONS 5. THE DESIGN PRESENTED HEREIN IS BASED UPON THE ASSUMED PARAMETERS, FOUNDATION CONDITIONS, GROUNDWATER CONDITIONS, AND LOADINGS STATED IN SECTION WALL ELEVATION VIEWS AND LOCATIONS, AND GEOMETRY OF EXISTING STRUCTURES MUST BE VERIFIED PRIOR TO CONSTRUCTION. 5. CONDITIONS SHOWN ARE PROVIDED BY THE PROJECT GEOTECNICAL ENGINEER. ETTAMAR ASSUMES NO LIABILITY FOR INTERPRETATION OR VERIFICATION OF SUBSURFACE CONDITIONS, FOR THE SUITABILITY OF DESIGN PARAMETERS, OR FOR INTERPRETATION OF SUBSURFACE GROUNDWATER CONDITIONS. 5.4 THE CLIENT SHOULD SUBMIT THESE PLANS TO THE OWNER OR OWNER S REPRESENTATIVE FOR REVIEW AND VERIFICATION THAT THE ACTUAL SITE CONDITIONS AND PARAMETERS ARE AS DESCRIBED HEREIN. 5.5 THE DESIGN PARAMETERS STATED IN SECTION 4. SHALL BE VERIFIED BY THE PROJECT GEOTECHNICAL ENGINEER DURING CONSTRUCTION. IF THE ACTUAL CONDITIONS ARE FOUND TO BE OTHER THAN AS SET FORTH IN THESE PARAMETERS, CONSTRUCTION SHALL NOT PROCEED AND THE RELEVANT DATA SHALL BE PROVIDED TO ETTAMAR, INC. FOR THE PURPOSES OF MODIFYING THE DESIGN. 5.6 THE CONTRACTOR SHALL FOLLOW ALL OF THE MANUFACTURER S INSTALLATION RECOMMENDATIONS. 5.7 IF ANY ROCK FORMATIONS AND / OR GROUNDWATER ARE ENCOUNTERED DURING CONSTRUCTION, IMMEDIATELY CONTACT ETTAMAR, INC AT AND THE OWNER S REPRESENTATIVE. 5.8 ANY TO THE DESIGN PARAMETERS STATED IN SECTION 4. OR STRUCTURE GEOMETRY SHALL REQUIRE DESIGN MODIFICATIONS PRIOR TO PROCEEDING WITH CONSTRUCTION. 5.9 THIS DESIGN IS ONLY VALID FOR THE PROPOSED SEGMENTAL RETAINING WALLS LOCATED AT: ELM FORK ATHLETIC FIELDS, DALLAS, TX THESE PLANS ARE NOT TRANSFERABLE TO ANY OTHER PROJECT. 5. DIFFERENTIAL SETTLEMENT, TOTAL SETTLEMENT AND CONSOLIDATION OF SUBGRADE MATERIALS SHALL BE THE RESPONSIBILITY OF THE OWNER S GEOTECHNICAL ENGINEER OR OWNER S REPRESENTATIVE. ETTAMAR, INC. ACCEPTS NO LIABILITY FOR THE EVALUATION OF SETTLEMENTS. 5. EVALUATION AND MITIGATION OF POTENTIAL EROSION, SCOUR AND HYDRAULIC EFFECTS OF WATER FLOWING IN ANY PROJECT AREAS IS THE RESPONSIBILITY OF THE OWNER OR OWNER S REPRESENTATIVE. 5. STRUCTURAL DESIGN HEREIN REPRESENTS A FINISHED STRUCTURE. THE CONTRACTOR SHALL PROVIDE ALL INTERIM BRACING, SHORING, INTERIM DRAINAGE PROVISIONS AND EROSION PROTECTION REQUIRED UNTIL FINAL CAPPING, PAVING, CURBING AND COMPLETION OF FINAL STORM DRAIN SYSTEM IS COMPLETE. Notes:. "Low Permeable" material at top of wall shall be compacted clay, with a plasticity index greater than, or impermeable concrete or asphalt paving. Grade beam shall fromed not earth cast. Void forms shall be placed under beams per Alpha Geotechnical report G76. Piers shall penetrate 5 ft. min into gray shale 4. Project goetechnical engineer shall observe pier construction to verify construction conforms with the report recommendations 5. Reinforced fill zone shall be compacted to min. 95% of Max. Std. Proctor Density. 6. Wall facing, grid and connectors shall be installed per the manufacturer s installation Instructions. 7. Filter fabric shall be Mirafi 4N or equal. Lap all seams 8" min. 8. Structural design herein represents a finished structure. The contractor shall provide all interim bracing, shoring, interim drainage provisions and erosion protection required until final capping, paving, curbing and completion of final storm drain system is complete. 9. Project geotechnical reports and contractor field reports indicate that overall settlement of the project site is ongoing, and likely to continue. The foundation improvement shown will not eliminate settlement, but is intended to address differential settlement. TRIM SNUG AT PIER GRAVEL LEVELING PAD (BIG CITY ITEM 47 FLEX BASE) 9.5" 6 degrees FILL AND COMPACT PER PROJECT SPECIFICATIONS PRIOR TO BUILDING WALL IN HEIGHT TOE WALL COMPACTION DETAIL VERT. REINF. 5 EA. #5 D BX TYPE IMMEDIATELY BELOW LEVELING PAD LEVELING PAD DETAIL " BX TYPE IMMEDIATELY BELOW LEVELING PAD LEVELING PAD STEP DETAIL 45 DEGREE STEP # Pitch Double top and bottom loop PIER SECTION DETAIL SPACE PIERS PER CHART " cover PIER C-C WALL STA 'D' SPACING A TO +8 8" 8' A +8 TO END 8" 5' F TO END 5" 5' PLACE " REINFORCED FILL BETWEEN OVERLAPS FACE OF WALL STEEL POST BY OTHERS 8 MAX POST SPACING EMBED POST IN 8" DIAMETER CONCRETE ( MIN. DEPTH). RETAINING WALL CONTRACTOR SHALL SET VOID FORMS (SONOTUBE OR SIMILAR) FOR LATER USE BY FENCE CONTRACTOR. MIN. TRIM GRID " AROUND VOID FORM OFFSET FENCE / HAND RAIL POST DETAIL TOP OF ***INFORMATION ONLY NOT IN SUBCONTRACTOR S SCOPE*** Owner shall review project requirements and shall provide the retaining wall contractor with written instruction regarding locations inwhich fence post/handrail supports are required prior to construction. CUT GRID WIDTH TO FIT BLOCK WIDTH OUTSIDE RADIUS CURVE CUT GRID WIDTH TO FIT BLOCK WIDTH INSIDE RADIUS CURVE PLACE ADDITIONAL GRID TO FILL GAPS IN COVERAGE PLACE " REINFORCED FILL BETWEEN OVERLAPS notes, cross sections, details TBPE #848 (5) (5) -54 FAX 4// E88 SCALE: NOTED RW OF RW 5

2 WALL 'A' PROFILE STA: - 9+ TW. BW 48. TW. BW 46. TW. BW 46. TW. BW 44. TW. BW 4. TW. BW 4. TW 48. BW. TW 48. BW GRID L = 8h:v TW SLOPE GRID L = 8h:v TW SLOPE GRID L = 8h:v TW SLOPE GRID L = 8h:v TW SLOPE WALL 'A' PROFILE CONT. STA:9+ - END TW 4. TW 4. TW. TW 48. TYPE TYPE TYPE " THE DIMENSIONS SHOWN ON THIS PROFILE ARE BASED UPON THE LINES AND GRADES The Grading plan sheets C through C8 and C- of the project plans as prepared by Freese and Nichols, and dated; //. CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE DIMENSIONS SHOWN ON THIS. QUANTITIES ARE ESTIMATES ONLY. CUSTOMER SHOULD PERFORM THEIR OWN GRID L = GRID L = GRID L = WALL 'A' PLAN SCALE: " = 6' END WALL A STA: TBPE #848 (5) (5) -54 FAX BEGIN WALL A HORZ : " = ' VERT : " = 5' // E88 RW OF RW 5

3 WALL 'B' PROFILE WALL 'C' PROFILE BW. BW. BW. BW. 7. BW. BW. BW. BW. TW. TW. TW. TW. TW. 7. TW. TW. TW. TW. BW 49. TW. WALL 'G' PROFILE BW. BW WALL 'B' PLAN SCALE: " = 5' WALL 'C' PLAN SCALE: " = 5' h:v BW SLOPE 6 9 8h:v BW SLOPE 8h:v BW SLOPE MAX HT =.' 8h:v BW SLOPE WALL 'G' PLAN SCALE: " = 5' END WALL C STA:+7 BEGIN WALL C END WALL B STA:+7 +7 BEGIN WALL B BEGIN WALL G END WALL G STA:+8 TYPE TYPE TYPE ". THE DIMENSIONS SHOWN ON THIS PROFILE ARE BASED UPON THE LINES AND GRADES The Grading plan sheets C through C8 and C- of the project plans as prepared by Freese and Nichols, and dated; //. CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE DIMENSIONS SHOWN ON THIS. QUANTITIES ARE ESTIMATES ONLY. CUSTOMER SHOULD PERFORM THEIR OWN HORZ : " = ' VERT : " = 5' TBPE #848 (5) (5) -54 FAX RW 6/8/ E88 OF RW 5

4 WALL 'D' PROFILE WALL 'E' PROFILE BW 444. BW 444. BW. 7. BW WALL 'D' PLAN SCALE: " = 5' WALL 'E' PLAN SCALE: " = 5' END WALL D STA:+7 +7 END WALL E +7 BEGIN WALL D STA:+7 BEGIN WALL E TYPE TYPE TYPE ". THE DIMENSIONS SHOWN ON THIS PROFILE ARE BASED UPON THE LINES AND GRADES The Grading plan sheets C through C8 and C- of the project plans as prepared by Freese and Nichols, and dated; //. CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE DIMENSIONS SHOWN ON THIS. QUANTITIES ARE ESTIMATES ONLY. CUSTOMER SHOULD PERFORM THEIR OWN HORZ : " = ' VERT : " = 5' TBPE #848 (5) (5) -54 FAX 4// E88 RW 4 OF RW 5

5 WALL 'F' PROFILE TW 4. TW 4. TW. TW. TW. TW. TW. TW. TW 47. TW 47. TW 47. TW 47. BW 4. TW 49. BW 4. TW 49. BW 4. TW 49. BW. TW 49. BW 47. TW 49. BW GRID L = MAX HT =.' h:v TW SLOPE GRID L = h:v TW SLOPE GRID L = h:v TW SLOPE GRID L = MAX HT = 5.' h:v TW SLOPE GRID L = GRID L = GRID L = GRID L = GRID L = GRID L = GRID L = GRID L = GRID L = GRID L = MAX HT = 7.' GRID L = GRID L = GRID L = GRID L = MAX HT =.' WALL 'F' PLAN SCALE: " = 5' BEGIN WALL F END WALL F STA:6+76 TYPE TYPE TYPE ". THE DIMENSIONS SHOWN ON THIS PROFILE ARE BASED UPON THE LINES AND GRADES The Grading plan sheets C through C8 and C- of the project plans as prepared by Freese and Nichols, and dated; //. CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE DIMENSIONS SHOWN ON THIS. QUANTITIES ARE ESTIMATES ONLY. CUSTOMER SHOULD PERFORM THEIR OWN HORZ : " = ' VERT : " = 5' TBPE #848 (5) (5) -54 FAX 4// E88 RW 5 OF RW 5