standard construction details - The Management System Parking Lot

WOREINFORCED CONCRETEPAVEMENT WITHINTEGRAL CURBASPHALTICCONCRETEPAVEMENTVARIABLEDETERMINED BY PIPEDIAMETER ( D ) AND BYPAVEMENT THICKNESS( T )1’-3"3"ASPHALTIC3’CONCRETEPAVEMENT6" CURBNO. 3 BARS3" 24" C-C MAX. 3"R=3"QT45^D/2R =D/4 6" 5 " E X P A N S IREINFORCED CONCRETESEPARATE CURB/GUTTERFACE OF CURBWARP FLOW LINE OFGUTTER TO MEETSLOTTED DRAINREINFORCED CONCRETEPAVEMENTSLOTTED DRAIN1’-3"Q = GUTTER CAPACITY = Q O + Q WYY W Y OQZ8/3Q = 0.56 ( - ) - S -Y OR USE TRIANGULAR CHANNEL FLOW NOMOGRAPHNZ = RECIPROCAL OF CROSS SLOPENO. 3 BARN = ROUGHNESS COEFFICIENT IN MANNING FORMULA ( USE N = O.0175 )Y = DEPTH OF FLOW. MAX. = HEIGHT OF CURB ( USUALLY 6" )DSTABILIZED BASE( USUAL ) 6" TRENCH BACKFILLSEE NOTE NO. 5BACK OF CURB6" HT. CURBVARIABLEHEIGHT CURBINTEGRAL CURBS = GRADE OF GUTTER IN FT./ FT.Q W = PORTION OF WATER DRAINED BY WEIR FLOWZ8/3Q = W0.56- ( - ) - S - Y WNSECTION WITH ASPHALTIC CONCRETE PAVEMENTASPHALTIC CONCRETE PAVEMENTPAVEMENT TRANSITION AT END OF SLOTTED DRAINVARIABLE1’-3"BLOCKOUTLINEHAND FINISH3"CONSTRUCTIONJOINTNO. 3 BARS24" C.-C. MAX.3"5D/46"D/2DNO. 3 BAR6"TRENCH BACKFILLSEE NOTE NO. 5SECTION WITH REINFORCED CONCRETE PAVEMENT3" 9" 3"21"NO. 3 BARS24" C.-C. MAX.D/45 " HY = DEPTH OF W WATER CONSIDERED AS WEIR FLOW /< 0.2’Q O = PORTION OF WATER DRAINED BY ORIFICE FLOW = Q - Q WY = DEPTH OF O WATER CONSIDER AS ORIFICE FLOW > 0.2’L W = LENGTH OF SLOTTED DRAIN NECESSARY TO PICK UP WEIR FLOW ( Q W )Q WQ WL = ---------- W = ------ = 9.7 Q ( WY = W 0.2’ )3/2 0.103C W H WPROVIDE JOINT IN STREET PAVEMENTC = WEIR COEFFICIENT W= 3.26TO LINE UP WITH BLOCKOUT LINEH = AVERAGE W DEPTH OF FLOW IN FEET = 0.1’3’L O = LENGTH OF SLOTTED DRAIN NECESSARY TO PICK UP ORIFICE FLOW ( Q O )REINFORCED CONCRETE PAVEMENTQ OQ OL = ---------------- O= ------- = 2.5 Q ( OFOR Y= 6" )C 0.399O A O 2gH OC = ORIFICE O COEFFICIENT = 0.60 " E XMATERIALHAND FINISHA = AREA O OF ORIFICE = 0.14 SQ. FT. / LN. FT.g = ACCELERATION OF GRAVITY = 32.2 FT. / SEC. / SEC.H = AVERAGE O DEPTH OF FLOW IN FEET = 0.35’ FOR Y = 6"BLOCKOUT LINE ANDCONSTRUCTION JOINTWARP FLOW LINE OFGUTTER TO MEETSLOTTED DRAINREINFORCED CCONCRETEPAVEMENTSLOTTED DRAINL = ADJUSTED LENGTH OF SLOTTED DRAIN DUE TO GUTTER GRADES/< 1% : NO ADJUSTMENTL O + L WS > 1% : L = -------1 - 4SFACE OF CURB1’-3"45^BACK OF CURB6" HT. CURBVARIABLEHEIGHT CURBINTEGRAL CURBGENERAL NOTES :5 " H1. ECONOMICAL INSTALLATION ON GRADE SHOULD BE DESIGNED TO PICK UP ORIFICE FLOWONLY AND BYPASS WEIR FLOW. FOR Y=6", USE Q 0 = 0.9Q.REINFORCED CONCRETE PAVEMENT2. SLOTTED DRAIN IS MANUFACTURED IN 20’ LENGTHS. INSTALLATIONS SHOULD BEMULTIPLES OF 20’ OR HALF-LENGTH SECTIONS OF 10’.PAVEMENT TRANSITION AT END OF SLOTTED DRAIN3. SPECIAL PERMISSION IS REQUIRED FOR SLOTTED DRAIN INSTALLATION IN SAGS.4. SLOTTED DRAINS WILL BE CONNECTED TO MAIN STORM DRAIN BY STANDARD BENDS,CONNECTING BANDS AND THE REQUIRED LENGTH AND SIZE OF CORRUGATED METAL PIPE.5. TRENCH BACKFILL MUST BE TAMPED TO 95% OF MAXIMUM DENSITY, OR ACEMENT - SAND CONCRETE SLURRY OR LEAN GROUT MAY BE USED.6. THE EXTRA CONCRETE FOR THE THICKENED PAVEMENT WILL BE INCLUDED IN THE COSTOF THE DRAIN.7. SLOTTED DRAIN PIPE WILL HAVE A MINIMUM DIAMETER OF 15" AND A MAXIMUM OF 24".8. PAVING DETAILS SHOWN ARE FOR USE WITH 6" DEEP GRATE ON SLOTTED DRAIN.S P E C I A L D E S I G N M U S T B E A P P R9. HEEL PLATE WILL BE INSTALLED ACCORDING TO MANUFACTURER’S RECOMMENDATIONS WHERESPECIFIED IN PEDESTRIAN AREAS. DESIGN LENGTH MUST BE ADJUSTED ACCORDINGLY.WATER MUST NOTOVERFLOW ON TO8% MAX. GRADEPRIVATE PROPERTYTNOTE: Z=- FOR SHALLOWYV- SHAPED CHANNELSC L3"TY6" MAX. DESIGN WATERDEPTHDTRENCH BACKFILLSEE NOTE NO. 5ADD 2- NO. 3 BARSEXTEND 2’ BEYONDEND OF SLOTTED DRAINDUSUAL ALLEYREINFORCEMENTAPPROVEDDIRECTOR OF PUBLIC WORKS & TRANSPORTATIONDATE:TRENCH BACKFILLSEE NOTE NO. 5WHERE SLOTTED DRAIN MAY BESUBJECT TO WHEEL LOADS, THICKENEDPAVEMENT WILL BE REQUIREDDRAINAGE DETAILSSECTION THROUGH DRIVESECTION THROUGH VALLEYALLEYS, PARKING LOTS, ETC.SLOTTED DRAINSIN STREETS AND ALLEYSDEPARTMENT OF PUBLIC WORKS & TRANSPORTATIONCITY OF DALLAS, TEXASDESIGN DRAWN DATE FILE NO. PAGE NO.APRILC.O.D. A.B.&A. 251D 119972005