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HomeMy WebLinkAboutR-398808NE 1/4OFS32, T23 N, R5 E, W.M. Coo rn C1 I 0 W 0 N 0 W J m I 3 0 W Ld 00 00 0 CO z W m 0- 0 0 `1 a z W W m z 0 z W z 0 (.9 Z a rn w zz J lL GRADING NOTES 1. THE DESIGN SHOWN IS BASED UPON THE ENGINEER'S UNDERSTANDING OF THE EXISTING CONDITIONS. THE PLAN DOES NOT REPRESENT A DETAILED FIELD SURVEY. THE EXISTING CONDITIONS SHOWN ON THIS PLAN SHEET ARE BASED UPON THE SURVEY PREPARED BY PACE ENGINEERS, INC., DATED MARCH 2O17. THE CONTRACTOR IS RESPONSIBLE FOR VERIFYING FIELD CONDITIONS PRIOR TO BIDDING THE PROPOSED SITEWORK IMPROVEMENTS. IF CONFLICTS ARE DISCOVERED, THE CONTRACTOR SHALL NOTIFY THE OWNER PRIOR TO INSTALLATION OF ANY PORTION OF THE SITEWORK WHICH WOULD BE AFFECTED. IF CONTRACTOR DOES NOT ACCEPT EXISTING SURVEY, INCLUDING TOPOGRAPHY AS SHOWN ON THE PLANS, WITHOUT EXCEPTION, HE SHALL HAVE MADE, AT HIS OWN EXPENSE, A TOPOGRAPHIC SURVEY BY A REGISTERED LAND SURVEYOR AND SUBMIT IT TO THE OWNER FOR REVIEW. 2. CAUTION - NOTICE TO CONTRACTOR THE CONTRACTOR IS SPECIFICALLY CAUTIONED AT THE LOCATION AND/OR ELEVATION OF EXISTING UTILITIES AS SHOWN ON THESE PLANS IS BASED ON RECORDS OF THE VARIOUS UTILITY COMPANIES AND, WHERE POSSIBLE, MEASUREMENTS TAKEN IN THE FIELD. THE INFORMATION IS NOT BE RELIED ON AS BEING EXACT OR COMPLETE. THE CONTRACTOR MUST CALL THE APPROPRIATE UTILITY COMPANY AT LEAST 48 HOURS BEFORE ANY EXCAVATION TO REQUEST EXACT FIELD LOCATION OF UTILITIES. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO RELOCATE ALL EXISTING UTILITIES WHICH CONFLICT WITH THE PROPOSED IMPROVEMENTS SHOWN ON THESE PLANS. 3. THE SPOT ELEVATIONS INDICATED ON THIS PLAN REPRESENT THE DESIGN TOP OF PAVEMENT, UNLESS OTHERWISE NOTED. 4. CONTRACTOR IS RESPONSIBLE FOR DEMOLITION OF EXISTING STRUCTURES INCLUDING REMOVAL OF ANY EXISTING UTILITIES SERVING THE STRUCTURE. UTILITIES ARE TO BE REMOVED TO THE RIGHT-OF-WAY. 5. ALL UNSURFACED AREAS DISTURBED BY GRADING OPERATION SHALL RECEIVE 4 INCHES OF TOPSOIL. CONTRACTOR SHALL APPLY STABILIZATION FABRIC TO ALL SLOPES 3H:1V OR STEEPER. CONTRACTOR SHALL STABILIZE DISTURBED AREAS WITH GRASS IN ACCORDANCE WITH LOCAL SPECIFICATION UNTIL A HEALTHY STAND OF GRASS IS OBTAINED. 6. ALL CUT AND FILL SLOPES SHALL BE CONSTRUCTED PER THE IBC CODE AND APPLICABLE LOCAL REGULATION. ALL CUT AND FILL SLOPES SHALL BE 3:1 OR FLATTER UNLESS OTHERWISE NOTED. 7. CONTRACTOR SHALL ASSURE POSITIVE DRAINAGE AWAY FROM BUILDINGS FOR ALL NATURAL AND PAVED AREAS AND SHALL GRADE ALL AREAS TO PRECLUDE PONDING OF WATER. 8. ALL POLLUTANTS OTHER THAN SEDIMENT ON -SITE DURING CONSTRUCTION SHALL BE HANDLED AND DISPOSED OF IN A MANNER THAT DOES NOT CAUSE CONTAMINATION OF STORMWATER. THE CONTRACTOR SHALL ADHERE TO ALL TERMS AND CONDITIONS AS OUTLINED IN THE GENERAL N.P.D.E.S. PERMIT FOR STORMWATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES. 9. PROPERTIES AND WATERWAYS DOWNSTREAM OF THE SITE SHALL BE PROTECTED FROM EROSION DUE TO INCREASES IN THE VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FROM PROJECT SITE. 10. CONSTRUCTION SHALL COMPLY WITH ALL APPLICABLE GOVERNING CODES AND BE CONSTRUCTED TO SAME. 11. CONTRACTOR TO REMOVE UNSUITABLE SOILS LOCATED WITHIN THE BUILDINGS SPLAY LINE OF THE FOOTINGS. 12. FOR BOUNDARY AND TOPOGRAPHIC INFORMATION REFER TO PROJECT SURVEY. 13. FOR LAYOUT INFORMATION REFER TO THE SITE PLAN AND HORIZONTAL CONTROL PLAN. STORM DRAINAGE NOTES 1. EXISTING DRAINAGE STRUCTURES TO BE INSPECTED AND REPAIRED AS NEEDED, AND EXISTING PIPES TO BE CLEANED OUT TO REMOVE ALL SILT AND DEBRIS. 2. IF ANY EXISTING STRUCTURES TO REMAIN ARE DAMAGED DURING CONSTRUCTION IT SHALL BE THE CONTRACTORS RESPONSIBILITY TO REPAIR AND/OR REPLACE THE EXISTING STRUCTURE AS NECESSARY TO RETURN IT TO EXISTING CONDITIONS OR BETTER. 3. STORM DRAINAGE PIPE WITH LESS THAN 2'-0" COVER SHALL BE CLASS IV REINFORCED CONCRETE PIPE, OR APPROVED EQUAL TO SUSTAIN H-20 LOADING. 4. ALL ON -SITE STORM DRAINAGE PIPE SHALL BE SMOOTH WALLED INTERIOR, MANUFACTURER'S VERIFICATION OF MANNING'S ROUGHNESS COEFFICIENT N=0.012 OR LESS. 5. PRECAST STRUCTURES MAY BE USED AT CONTRACTOR'S OPTION. 6. ALL CATCH BASINS AND AREA DRAINS ARE TO BE SITUATED SUCH THAT THE OUTSIDE EDGE OF GRATE FRAME IS AT TOE OF CURB OR FLOWLINE OF GUTTER (WHERE APPLICABLE). 7. CATCH BASIN INLET PROTECTION / EROSION CONTROL TO BE USED FOR ALL NEW INLETS. 8. ALL STORM PIPE ENTERING STRUCTURES SHALL BE GROUTED TO ASSURE CONNECTION AT STRUCTURE IS WATERTIGHT. 9. ALL STORM SEWER MANHOLES IN PAVED AREAS SHALL BE FLUSH WITH PAVEMENT, AND SHALL HAVE TRAFFIC BEARING RING AND COVERS. MANHOLES IN UNPAVED AREAS SHALL BE 6" ABOVE FINISH GRADE. LIDS SHALL BE LABELED "STORM SEWER". 10. CONTRACTOR SHALL CONNECT ROOF DRAIN LEADERS AND FOOTING DRAINS TO PROPOSED STORM DRAINS AS SHOWN. 11. CONTRACTOR SHALL CONFIRM STRUCTURE CONSTRUCTABILITY WITH MANUFACTURER PRIOR TO DELIVERY AND INSTALLATION. ACCESSIBILITY NOTE PROPOSED GRADES SHALL BE LIMITED TO: ACCESSIBLE PARKING STALLS AND LANDINGS 2.0% IN ANY DIRECTION ACCESSIBLE PEDESTRIAN PATHS 2.0% CROSS -SLOPE 5.0% RUNNING SLOPE EARTHWORK QUANTITIES EARTHWORK VOLUMES SHOWN BELOW REPRESENT THE DIFFERENCE BETWEEN FINISHED AND EXISTING GRADE SURFACES ADJUSTED BY THE VOLUME REQUIRED FOR THE STORMWATER DETENTION SYSTEM, WITH NO ADJUSTMENTS MADE FOR SURFACE PREPARATION REQUIREMENTS OR SUBGRADES. THE VOLUMES ARE APPROXIMATE ONLY, AND ARE NOT TO BE USED FOR BIDDING PURPOSES. CUT: 2,100 CY FILL: 100 CY NET: 2,000 CY (CUT) PA 1505 Westlake Ave. N. Suite 305 Seattle, WA 98109 T (206) 522-9510 F (206)522-8344 WWW. PAcLAND.COM LEGEND EX. CONTOUR PROPOSED CONTOUR XXX SPOT ELEVATION xxx.x� (TP UNLESS NOTED) 2 c-6.2 STORM DRAIN PIPE SD------ 0- 2 ROOF DRAIN LEADER C-s.2 (6" PVC, 1 SLOPE ►- UNLESS NOTED) 1 ARCH DETENTION PIPE, C-6.3 STORMTECH MC-3500 OR EQUIVALENT 1 PRE-TREATMENT C-s.3 ISOLATOR ROW 1 INSPECTION PORT WITH 18" C-6.5 SQUARE CONCRETE COLLAR 1 STORMFILTER WATER QUALITY C-6.4 MODULAR WETLAND 1 TYPE I CATCH BASIN c-6.o 2 TYPE II CATCH BASIN C-6.0 4 NYLOPLAST DRAIN BASIN C-6.1 C 4.1 CLEANOUT TO GRADE (CO) RETAINING WALL 11 V W Q 00 O r STRUCTURE TABLE # TYPE RIM IE IN IE OUT 1 0 TYPE 2 CB* 399.50 392.99 392.98- 393.07 3+2.-98- O2 FLOW CONSTRICTOR* 39399.49 393�8 393 & O DRAIN BASIN* 401.67 -401.63 397.29-S 395 -8 394.45 O TYPE 2 CB (INLET)* 401.89 395.81-S 395.77 5 0 DRAIN BASIN* 402.24 396.00 396.00 8 395.88r 395-88r O DRAIN BASIN* 401.45 08.88 396.04 3�0- 396.10 O MODULAR WETLAND* 400.80 397.45 396.12 8 O TYPE 1 CB* 400.13 - 5 397.31 397.30 397.48 347-.48r O TRENCH DRAIN (24') 399.58 - 397.56 10 0 DRAIN BASIN* 401.06 -48i-08- 397.42 397.59- 397.42 39 9. 11 TYPE 1 CB 400.49 488.3-21 397.93 397.74 397.88- 3.9--88- 12 TYPE 1 CB 402.54 4-8� 399.53 399.45- 399.50 33945- 13 0 TYPE 1 CB 404.10 400.70 468.47 400.65 466-47- 483-76u- 14 TYPE 1 CB 403.87 400.93 400.93 4.83 480.77 409-7-7- 15 DRAIN BASIN* 404.23 399.26-N 395 395.28-W 3 jr--i8- 2 16 TYPE 2 CB (INLET)* 404.75 395.35 3 3-i8- 395.32 393-i8- PIPE TABLE # DIA (IN) L (FT) SLOPE (FT/FT) MATERIAL 12 16 44- 0.010 -&%5- HDPE 12 30 0.035 HDPE 2® 12 44 0.005 HDPE 12 68 0.048 HDPE NOT USED �5 12 22 0$69r9 HDPE 12 40 _+&__ 0.003 - HDPE ❑7 12 3 0.005 HDPE ❑8 12 5 0.005 HDPE 12 15 0.005 DIP 10 12 22 0.005 DIP 11 12 42 &%5- DIP 12 12 � 0.027 DIP 13 12 � &.0.*5- HDPE 14 12 60 0.004 HDPE 15 NOT USED 1s NOT USED • NOTE: * DENOTES SOLID LID (PER 2/C-6.2 FOR CATCH BASINS); ALL OTHER STRUCTURES SHALL HAVE OPEN GRATES (PER 3/C-6.2 FOR CATCH BASINS) SURVEYED: SCALE: WRH A DESIGNED: AS SHOWN LRR DRAWN: CMD ONE INCH CHECKED: AT FULL SCALE WFF IF NOT ONE INCH NO. REVISION BY DATE AP P R APPROVED: SCALE ACCORDINGLY DErEN110N SYSTEM TABLE DESCRIPTION VAULT 1 BOTTOM OF ROCK ELEVATION 394.20 ROCK BELOW CHAMBERS 9 IN BOTTOM OF CHAMBERS ELEV 394.95 CHAMBER HEIGHT 45 IN TOP OF CHAMBERS ELEVATION 398.70 ROCK ABOVE CHAMBERS 12 IN TOP OF ROCK ELEVATION 399.70 # OF UNITS 66 STORAGE VOL. 12,019 KEY NOTES OA CONNECT TO EX CATCH BASIN EX 24" IE (N,S)=392.9 EX 12" IE (W)=392.9 NEW 12" IE (SE)=392.9 © IF UNDERGROUND POWER LINES ARE IN CONFLICT WITH STRUCTURE LOCATION, CONTRACTOR SHALL COORDINATE WITH UTILITY PROVIDER TO RELOCATE LINES AS NEEDED VERTICAL: NAVD 1988 HORIZONTAL- NAD 1983/1991 DATU M ENGINEER'S RECORD DRAWING CERTIFICATION SEE SHEET CV-1.0 FOR SIGNED ENGINEER'S RECORD DRAWING CERTIFICATION NOTE CITY OF RENTON Planning/Building/Public Works Dept. Know what's below. Call before you dig. GRAPHIC SCALE 10 20 40 ( IN FEET ) 1 inch = 20 ft. FLOW RESTRICTOR TABLE DESCRIPTION VAULT 1 RIM ELEVATION 399.63- 399.40 INLET ELEVATION 394.20- 391.18 OUTLET ELEVATION 394.20- 394.18 ORIFICE #1 ELEVATION 392.20 ORIFICE #1 DIAMETER 0.55 IN ORIFICE #2 ELEVATION 396.80 ORIFICE #2 DIAMETER 0.79 IN ORIFICE #3 ELEVATION 397.60 ORIFICE #3 DIAMETER 0.73 IN RISER ELEVATION 398.70 OUTLET PIPE DIAMETER 12 IN NOTE: SEE 3/C-6.2 FOR FLOW CONSTRICTOR DETAIL R-398808 IN COMPLIANCE WITH CITY OF RENTON STANDARDS RENTON DENTAL ARTS 17816 108TH AVE SE RECORD DRAWINGS GRADING AND DRAINAGE PLAN 04/12/2019 FIELDBOOK: PAGE: C-2.0 SHEET: OF: 08 27 U W Q Q I- z W 0 z O I- z WM 1 1