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HomeMy WebLinkAboutC8.0_Drainage Details GENERAL NOTES 1. CONTRACTOR TO VERIFY EXISTING GRADES SHOWN ON THE PLAN. \ 2. CONTRACTOR TO ENSURE POSITIVE DRAINAGE. IF A CONFLICT SD HW 07- - I OCCURS BETWEEN THESE PLANS AND FIELD CONDITIONS, THE INV OUT: 2608.50 CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY. 1 N: 4693.4349 2 ' / /II 3. ALL STATIONS OFFSETS NORTHINGS, EASTINGS ARE TO BACK E: 8085.3619 OF CURB, BACK OF HEADWALL, OR CENTER OF PIPE UNLESS SD MH-06 OTHERWISE SPECIFIED ON PLANS. BSN-2 1 RIM: 2617.89 / SD CB 01 \ II VOL REQ: 6,147 CF INV IN: 2611.11 (E) 5 _ 4. ALL SIDEWALKS SHALL COMPLY WITH THE LATEST ADA \ 11 LF OF 3 RIM: 2612.63 VOL PROV: 7,517 CF INV OUT: 2611.01 (S) STANDARDS. CROSS SLOPE SHALL BE LESS THAN 2% 12" PVC @ 0.50% I 6 NV OUT: 2609.84 (S) ` HW=2612.25 N: 4832.6166 / LONGITUDINAL SHALL BE LESS THAN 5% UNLESS AT A RAMP. \ Q25: 1.93 CFS BTM=2608.50 / E: 8120.4770 / \ Qioo: 2.70 CFS ;OB -1 II IR=8.00 IN/HR / 5. ALL GRADING AND EARTHWORK SHALL BE PERFORMED IN 38 LF OF REQ: 2,657 CF 'r' / ACCORDANCE WITH THE GEOTECHNICAL ENGINEERING REPORT. SD MH 02� � O � 3 12" PVC @ 3.10% PROV: 3,748 CF �\ II I �6>> OO / RIM: 2613.37 I \ / ENGINEER: ATLAS TECHNICAL CONSULTANT, LLC SD HW 032612.25 INV IN: 2609.78 (N) 5 INV OUT: 260 =2608.50 II ��o�/ i °°° ADDRESS: 2791 SOUTH VICTORY VIEW WAY o INV OUT: 2609.68 (E) 2 N: 4795.3347 .00 IN/HR I / / BOISE, ID 83709 a N: 4795.3294 II 2613.32 E: 7764.6541 FG DATE: OCTOBER 4, 2021 E: 7726.5862 I 13 LF OF \ � I o 3 / PROJECTNo.: B212624go 00 12 PVC © 0.67% o ,.o ' o 6. ALL EXISTING UTILITY LOCATIONS SHOWN HEREIN ARE LLI I t6 II I N \ 144 LF OF SD CB-05 APPROXIMATE ONLY. IT SHALL BE THE CONTRACTORS a 3 RIM: 2614.77 \ o \ II I 12 PVC ® 1.75% INV IN: 2611.29 (E) e \ RESPONSIBILITY TO DETERMINE THE EXACT VERTICAL AND IN II I / 4 HORIZONTAL LOCATION OF ALL EXISTING UNDERGROUND UTILITIES 2613.27 -- INV OUT: 2611.19 (W) PRIOR TO COMMENCING CONSTRUCTION. NO REPRESENTATION IS �p I Q25: 1.10 CFS MADE THAT ALL UTILITIES ARE SHOWN HEREON. THE ENGINEER FG 50.0 Qioo: 1.54 CFS ASSUMES NO RESPONSIBILITY FOR UTILITIES NOT SHOWN OR 31 LF OF 3 / UTILITIES NOT SHOWN IN THEIR PROPER LOCATION. - - - - - 12" PVC @ 0.50% / 72.5 GRAPHIC SCALE IN FEET 1 \ SD CB-04 , 7. CONTRACTOR TO HAVE PERCOLATION TEST PERFORMED BY 0 10 20 40 I RIM: 2614.77 GEOTECHNICAL ENGINEER AFTER SEEPAGE BED IS FULLY II INV OUT: 2611.45 (W) 4 - EXCAVATED. IF THE PERCOLATION IS LESS THAN SPECIFIED BY O Q25: 2.24 CFS Z THE GEOTECHNICAL REPORT AND ENGINEER, CONTRACTOR MAY Qioo: 3.12 CFS rr, O NEED TO BLAST OR BORE TO CREATE CONDUIT FOR DRAINAGE mr TO OCCUR OR REDESIGN THE SYSTEM TO ACHIEVE THE REQUIRED INFILTRATION. J / 8. CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY IF GRAPHIC SCALE IN FEET GROUNDWATER IS ENCOUNTERED WITHIN 3-FEET OF THE BOTTOM Z / 0 10 20 40 DESIGN ELEVATION FOR ANY INFILTRATION FACILITY AND/OR IF Ui W IT IS HIGHER THAN ANTICIPATED. Q o cn co 9. ACHD STAFF MUST VERIFY INFILTRATION RATE AFTER THE o co FACILITY IS FULLY EXCAVATED. z N Q co z U o O 6 N _ � o STORM DRAIN CONSTRUCTION NOTES m W 00 J L 0 o Yco a O1 CONSTRUCT INFILTRATION BASIN PER DETAIL ON N - THIS SHEET N o .) m O INSTALL METAL END SECTION WITH TRASH RACK & Y OUTLET PROTECTION PER ISPWC SD-628. 0 O INSTALL 12" SDR35 PVC PIPE. LENGTH AND SLOPE PER PLAN. w 4 CONSTRUCT TYPE IV CATCH BASIN PER THE LATEST FREEBOARD: 2613.25 O FREEBOARD: 2613.25 VERSION OF ACHD SUPPLEMENTAL SPECIFICATION STD Q III=III= �P I=III=11' 3 .� _ DWG SD-604A. INSTALL TYPE III GRATE PER ACHD = 1-I I I-I I I L '� III=I I I-I I I= =III=III=-' P I III I I' SUPPLEMENTAL SPECIFICATIONS STD DWG SD-610A. 11-1 11-1 I I q'I" H W ELEV: 2612.25 '� -III=1 I I=1 11= I=1 11=1 I I-I 'yq 1=1 11=1 1- -1 =1 =11 I-111= - - - - - - - - - - - - - - - --- =1 1=1 I 1=1 I I-' 111=1 11=1 11=1 I I-'I' HW ELEV: 2612.25 '; -_ __ -_ - N =1 I M 11=1 I I=1 I I=1 I - 11=1 11=1 11=1 11=I =1 I I=1 I I=1 I I=111= -- - -- - - - - - - -- - - --- =1111 I I I I I I I I I I I I I I- O I N STALL s TOR M DRAIN MANHOLE PER ACHD J =1I1=1I1=III=111=1I - I1=111=1I1=1I1=I' 1I1=1I1=1I1=1I I-I 1=1I1=1I1=1I1- SUPPLEMENTAL SPECIFICATIONS STD DWG SD-611. Z W 'I= - BTM ELEV: - - = -_ __= - W I I MI I I-1 I MI I MI I I-_ I I I-I I I-1 11-1 11 E I -1 11 I 1 I I I I I I 111=11 I=1 I I=1 11- III=III=III=III=III __ - - - - 1=III=III=III=111�; 1 IIIEIII=IIIMII=_111=- BTM ELEV: 2608.50 =III=III=III=III- © CONSTRUCT DUAL TYPE IV CATCH BASIN PER THE -II I-I 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11- -1 I I I 1 1=1 1=1 1=1 1_____________=1 1=1 1=1 11 LATEST VERSION O F THE ACHD SUPPLEMENTAL 0 'I I_,11 11=1 11=1 11=1 11=1 11=1 11=1 I I-1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 11=1 I I-1 I I i I I 11- I,I I I I-I 11=1 11=1 I I-III-III-III-III-III-III-III-III-III-III-III-III-I 11=1 11=1 I I=,. - U) w cn -1LI,;,111;,111-I11.-,1IIEIIIEIII-III-III-III-III-III-III-III-III-I11-.I I,;11I1-III-III-III-III-III-III-III-III-III-III-III-III-III-III=III-III-III- SPECIFICATION STD DWG SD 604A. DROP INLETS W -III-I11=1I1,111IIEIII-III-III-III-III,;,II�- -ILI, 111,;,111 111., ,111,��111=111=111=111-111=111=111=111-111=111-III,;.III SHALL BE Two COMPLETE STRUCTURES ABUTTING �_ z III=III=III-III=III- -III-III.-III,EIIIIIIIIIIIIIIIIIIIIIIIIIIIIIi�lll-III- EACH OTHER CONNECTED WITH A 12" PIPE. INSTALL z TYPE III GRATE PER ACHD SUPPLEMENTAL w BASIN-1 PROFILE m U 3 N.T.s. BASIN-2 PROFILE SPECIFICATIONS STD DWG SD-610A. �n Q w s N.T.S. ABBREVIATIONS co Q w 3 BASIN DATA: z z BASIN DATA: MIN MINIMUM TOP OF STEM WALL ELEVATION > N VOLUME REQUIRED: 2,657 CF O VOLUME PROVIDED: 3,748 CF VOLUME REQUIRED: 6,147 CF DG ROUGH GRADING DESIGN GRADE FREEBOARD ELEV: 2613.25 VOLUME PROVIDED: 7,517 CF TOP OF POND (HW) ELEV: 2612.25 FREEBOARD ELEV: 2613.25 BSN INFILTRATION BASIN (j) 0 BOTTOM OF POND ELEV: 2608.50 TOP OF POND (HW) ELEV: 2612.25 BOTTOM OF POND ELEV: 2608.50 97'6� EXISTING GRADE SPOT ELEVATION z TOP OF POND (HW) AREA: 1,296.75 SF EG _ TOP OF POND (HW) AREA: 2975.19 SF BOTTOM OF POND AREA: 150.00 SF BOTTOM OF POND AREA: 1,195.92 SF 97.66PROPOSED GRADE SPOT ELEVATION INFILTRATION RATE: 8.00 IN/HR FG INFILTRATION RATE: 8.00 IN/HR HSGW ELEV: NOT ENCOUNTERED 97.66HIGH POINT SPOT ELEVATION 3 MIN. SEPARATION: 3.00 HSGW ELEV: NOT ENCOUNTERED HP m co MIN. SEPARATION: 3.00 0 w s 997.66 LOW POINT SPOT ELEVATION U m m LU m 0 LU S7N 6 SIDEWALK SPOT ELEVATION z Y ) BASIN 1 BASIN 2 �3 = cn r�Fw CD U 0 c� n 0 a N N (D r O N O LO zz O o > N U W O Z N 0 NO c a Z o (n - N z (n N W Z u Q cD W _z z U w " W LLI � E � U Q w a a g W 0 SEAL °a D U L Q J W N N '` D Z 2 U) " F 9 a �' 2 C F N N w O Q o < < ER gP� o J s EXPIRES 10/31/23 > 3 CAUTION: NOTICE TO CONTRACTOR SHEET NO. N UI s N = o THE CONTRACTOR IS SPECIFICALLY CAUTIONED THAT THE LOCATION AND/OR ELEVATION OF EXISTING , o a UTILITIES AS SHOWN ON THESE PLANS IS BASED ON RECORDS OF THE VARIOUS UTILITY COMPANIES O 1 AND,WHERE POSSIBLE, MEASUREMENTS TAKEN IN THE FIELD. THE INFORMATION IS NOT TO BE RELIED o ON AS BEING EXACT OR COMPLETE. THE CONTRACTOR MUST CALL THE LOCAL UTILITY LOCATION CENTER AT LEAST 48 HOURS BEFORE ANY EXCAVATION TO REQUEST EXACT FIELD LOCATIONS OF THE 0 d � UTILITIES. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO RELOCATE ALL EXISTING owwhays below. 08 OF 18 UTILITIES WHICH CONFLICT WITH THE PROPOSED IMPROVEMENTS SHOWN ON THE PLANS. Call before you dig U