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HomeMy WebLinkAboutZ-6681-B Map 5L O 11 HLc`-�ATD Pt Pv71 .E_i APM CONSTRUCT1 �1� 1 WT 1 J l ; \ 16 / JUNCTION BOX 30' FL IN -343.50 RCP f ; .---- REMOVE EXIST F.E.S. CONSTRUCT SEGMENTAL BLOCK FL IN -337 \ / .60 12' RCP FL OUT -337.50 EXTEND EXIST RCP SURFACE INLET RETAINING WALL FL -338.0 •" � EXIST _FL -344.0 \ 13 46 30- RCP X `12 LF 150 0 AREA DRAIN CONSTRUCT ' SURFACE INLET s PROP STORAGE �� o-------�� - fl FL -337.0 FF -346.0 ('`� r; SUBDRNN \ p°o �r �� end SWIV, � MM a a ~4 SUBDRAIN i• a� - - \ ` r ..end Q `O o h .a CURB CUT ��►�= \ �p\t 1 40"1 .5 ov 4 \ / t 5 >. ��. CONSTRUCT DUMPSTER PAD. - 8' THICK 3500 PSI CONCR COVERED WT4 REBAR 0 6. O.C. AY PARKIN f PROP BLDG/ W/ 4' THICK SB -2. p y ° y FF -344.0 all\ �S a o B 3 NO CURB 5 0 / 3 CONSTRUCT!tie ^� s CURB IN A - FL -335.50 / 3IV s. / .5 7 / '4 183 LF 4L5 res- titin S70RMWAlER D ON t� / C kSTRUCT I INLET FL -33 it/ r CURB :Cur l \ �- 3 l l CURB CUT 4� ` 5 co i _ N -CONSTRUCT 24' RCP / \ %ft moo FLARED END SECTION --- FL-335.0 CURB CUT14 -% / yr STRUCT TAIL -OUT DITCH I y / oh CONSTRUCT HC RAMP SEED -MULCH FILL AREA NJ CONSTRUCT CONCRETE / DRNEWAY 'APRON f V W / CLEARING LIMITS J V ♦ J / \jr f N 3 / STRUCT HC RAMP / STORMWATER DETENTION CALCULATIONS JI� � *,a// ` ' ~� �� ~ ` AREA - 0.85 Acres _ 01* ` N h1 / Average Slope - 8% ♦ y / I Undeveloped Developed smog♦ (b p / Runoff Coefficient 0.55 0.90 J v Time of Concentration (min.) 10 g J - _ ♦ _ 0 I / / 25 Year Rainfall Intensity (in./hr.) 7.1 8.5 J, CLEARING LIMITS ♦` I ;I /.p Differential Runoff Rate (R) = 0.90(8.5)-0.55(7.1) = 3.75 in./hr • v / Simplified Volume Formula J ♦ �• I I I / Volume Required = R x A x Tc x 60 \ / =3.75x2.1 x5x60 ,a = 956 cubic trot 2 'J CONSTRUCT �' ; I 'I I Volume Provided RCP x 249' = 782 cubic foot TAIL -OUT DITCH ' 1 I I "' ii I 4• dia Inlet x 19.9' = 250 cubic foot 1,032 cubic foot Release 25 Year Undeveloped Flow i _, ♦ I / I Off -Site & On -Site • i _2, Acreage 15.9 acres Runoff Coeffecient 0.55 "' - -�= �,, ♦ r` I I /i / Time of Concentration 15 ruin. \ 'I 25 Year Rainfall Intensity 6.3 in./hr. Q = 0.55(6.3)(15.9) = 55.1 cfs Use 24" RCP Pipe as Outlet -- Q = C x A x (2gh) 1/2 z n ,24„ Q= 0.6 x 3.14 x (2 x 32.2 x 6.5)/ ' FES = 38.5 cfs < 55.1 cfs i I � / / r' CITY BM,[� - I 30 RCP - I I / /oma 20 0 20 Scale I' = 20 ft GENERAL SITE UTILITY CONSTRUCTION NOTES: 1. SEE ARCHITECTURAL DRAWINGS FOR DETAILED GRADING AT BUILDINGS, STEPS, WALKS, WALLS AND OTHER STRUCTURES. 2. FINISH CONTOURS AND GRADES SHOWN ARE FOR FINISHED SURFACES, ALLOWANCES SHALL BE MADE FOR PAVEMENTS, SLABS, TOPSOIL, SOD, ETC. UNIFORM PLANES AND SURFACES SHALL BE SHAPED BETWEEN FINISHED SPOT ELEVATIONS AND/OR FINISH CONTOURS SHOWN. MINIMUM PAVEMENT SLOPES SHALL BE 1%, MINIMUM FINISH SLOPES ON GRASS OR SOD SURFACES SHALL BE 1%, MINIMUM LONGITUDINAL CONCRETE CURB & GUTTER SLOPE SHALL BE 0.6%, SPILLOUT CURB SHALL BE USED ON THE HIGH SIDE OF PAVEMENT AND AT DISCHARGE POINTS. 3. THE CONTRACTOR SHALL CONTROL EROSION ON THE SITE, ALL SLOPES SHALL BE FERTILIZED, SEEDED AND MULCHED (OR LANDSCAPED) AS SOON AS POSSIBLE. THE CONTRACTOR SHALL FILE A NOTICE OF INTENT WITH THE ARKANSAS DPC&E. THE SITE SHALL BE GRADED TO MAINTAIN POSITIVE DRAINAGE DURING CONSTRUCTION, WATER SHALL NOT BE ALLOWED TO POND. 4. ALL AREAS TO BE CUT OR FILLED SHALL BE CLEARED AND GRUBBED. THE MAXIMUM FILL SLOPE SHALL BE 3.1. ALL FILLS SHALL BE MADE IN 8" LIFTS AND COMPACTED, AT OPTIMUM MOISTURE CONTENT TO 95% OF MODIFIED PROCTOR DENSITY (ASTM D-1557), AS DETERMINED BY IN-PLACE DENSITY TESTS, BORROW AND FILL MATERIAL SHALL BE SELECT CLAY SAND OR SANDY CLAY HAVING A LIQUID LIMIT LESS THAN 40 OR OTHER APPROVED FILL. FILL SOILS CLASSIFYING AS SC OR GC ACCORDING TO THE UNIFIED SOILS CLASSIFICATION SYSTEM ARE CONSIDERED SUITABLE. SHALE MATERIAL USED IN FILL SHALL BE COMPACTED AT 3% ABOVE OPTIMUM MOISTURE CONTENT WITH A VIBRATORY SHEEPS FOOT COMPACTOR. 5. THE CONTRACTOR SHALL COORDINATE WITH EACH UTILITY COMPANY PRIOR TO ANY EXCAVATION. ANY DAMAGE TO UTILITY LINES CAUSED BY THE CONTRACTORS OPERATIONS SHALL BE REPAIRED AT THE CONTRACTORS EXPENSE. THE CONTRACTOR SHALL VERIFY THE HORIZONTAL AND VERTICAL ALIGNMENT OF EXISTING AND PROPOSED STORM SEWER, SANITARY SEWER AND WATER LINES TO ENSURE THAT THF`? ARF INSTALLED WITH ADE01 ATF COVER AND CI. FASANCF ALL ROUGH GRAUiNG SHALL BE COMPLEIL BEFORE INSTALLATION OF STORM SEWER SANITARY SEWER AND APPURTENANCES, WATER MAINS, SERVICES AND APPURTENANCES. ALL UTILITY TRENCHES SHALL BE BACKFILLED AND COMPACTED WITH SELECT MATERIAL AS SPECIFIED IN NOTE #4 ABOVE. 6. THE CONTRACTOR SHALL COMPLY WITH ALL APPLICABLE LAWS, CODES AND ORDINANCES GOVERNING WORK OF THIS TYPE. 7. THE INSTALLATION OF ALL CULVERT PIPE TO BE IN ACCORDANCE WITH AHTD SPECIFICATIONS. 8. ALL EXISTING IMPROVEMENTS WHICH INTERFERE WITH THE WORK, AND ARE NOT TO BE SAVED SHALL BE REMOVED AND DISPOSED OF. IMPROVEMENTS IN THE RIGHT-OF-WAY WHICH ARE TO REMAIN SHALL BE PROTECTED BY THE CONTRACTOR. 9. ALL REINFORCED CONCRETE PIPE (RCP) SHALL BE CLASS Ill WITH BELL AND SPIGOT TYPE JOINTS. PIPE, MATERIAL AND INSTALLATION SHALL BE IN CONFORMANCE WITH APPLICABLE ARKANSAS HIGHWAY AND TRANSPORTATION DEPARTMENT (AHTD) STANDARD CONSTRUCTION SPECIFICATIONS. 10. ALL CORRUGATED METAL PIPE SHALL MEET OR EXCEED AHTD REQUIREMENTS FOR GAUGE AND CORRUGATION AND SHALL BE POLYMER COATED IN ACCORDANCE WITH ASTM A-742 AND AASHTO M-246. THE LAST 12" OF EACH LENGTH SHALL BE RECORRUGATED WITH ANNULAR CORRUGATIONS TO ACCEPT CORRUGATED COUPLING BANDS. 11. ALL WATER MAINS AND SEWER MAINS AND THEIR APPURTENANCES INCLUDING INSTALLATION, SHALL COMPLY WITH THE LATEST LITTLE ROCK MUNICIPAL WATER WORKS AND LITTLE ROCK WASTEWATER UTILITY SPECIFICATIONS. CONNECTIONS SHALL NOT BE MADE TO EXISTING LINES UNTIL NEW CONSTRUCTION HAS BEEN TESTED AND APPROVED BY THE UTILITY. 12. THE CONTRACTORS ATTENTION IS SPECIFICALLY CALLED TO THE LOCATION OF THE EXISTING IMPROVEMENTS. THE CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR DAMAGING ANY EXISTING IMPROVEMENTS WHICH ARE TO REMAIN. PRIOR TO SUBMITTING HIS BID, THE CONTRACTOR SHALL REVIEW THE PLANS AND SPECIFICATIONS. HE SHALL VISIT THE SITE AND INSPECT THE CONDITION OF THE SITE AND THE ADJACENT IMPROVEMENTS. 13. THE CONTRACTOR SHALL CALL "ONE -CALL" FOR LOCATION OF ALL 1L1TILITIES PRIOR TO COMMENCEMENT OF ANY EXCAVATION. 14. ANY EXCESS EXCAVATED MATERIAL, NOT REQUIRED FOR CONSTRUCTION `OF FILLS SHALL BE PLACED ON LOW AREAS ADJACENT TO SITES. M ,/I S� A T f p 00 ftm si !$ Pit 6FES' No.S,; ; VrviuuVU, rAVI11U OG UMAIINAUt I'LAN 11-17-04 9-9-04 8-31-04 Revised 8-20-04 ©w= -,DA Mw & Afs®om ms 9 Dyc- ARKANSAS MAXILLOFACIAL SURGERY CENTER Dete s-, 3-0d 0 CIVIL ENGINEERING, LAND PLANNING & DEVELOPMENT, SURVEYING LOT 4 - CANDLEWOOD EAST Scale Hor. V. • 24 RAHLING CIRCLE LITTLE ROCK, ARKANSAS 72223 1"=20• L117LE p /,C Sheet C`2 of C' Survey By: Drawn By: Checked By: Approved By: I~ ! t t i. E ROCK, ARKANSAS - - E- nor, No. 04--616,