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HomeMy WebLinkAboutSDP200500023 Calculations 2005-05-17 I -=— tl.l Nt w 441- R Q N13--Au3vr ----1)c-S t.) Virginia Department of Transportation—Pavement Design Guide © 1996(rev2000) Appendix IV Flexible Pavement Design Worksheet for New Subdivision Streets This sheet is intended for use and submission in conjunction with VDOT's Subdivision Street Requirements County 4Lr4 E COON- ,� / Date: M -r i7f Zoos c �'1� `�' �u z t),),{r7i f' Al112-Y 6)u�`�c (� F 4 7' ,C 4,4 s . .,ton Street Name cO/Z--71447G C 'Ae1L c t2AO CSU T4 eF 0 SS/ ,��, j AA,..) P Jltrtr-rF'( Phone: Z V62— 3 6,14/ ADT Projected traffic for the street segment considered,as defined in the Subdivision Street Requirements. CBRD Design CBR=Average of CBRT x 213 and modified only as discussed in the Pavement Design Guide. CBRT CBR value of the subgrade sample,taken and tested as specified in the Pavement Design Guide DME VDOT District Materials Engineer EPT Equivalent projected traffic HCV Number of Heavy Commercial Vehicles(e g.trucks,buses,etc.,with 2 or more axles and 6 or more tires). %HCV Percentage of the total traffic volume composed of Heavy Commercial Vehicles RF Resiliency Factor=Relative value of the subgrade soil's ability to withstand repeated loading. SSV Soil support value of subgrade(SSV=CBRD x RF) DP Thickness index of proposed pavement design computed by the Conventional Pavement Design Method DR Thickness index required,based on Design ADT and SSV,determined by Appendix II. Step 2: Determine Design Values Step 1: Determine Design ADT CBR, RF,and SSV c--14-- ADT ao0-90o Sample DBRT Resiliency Factor (RF) ) ,'fO(' o 00 # 1 Source Value i>/1' /oHCV= 100x ITV xADT) L-Yrr') LooS or #2 Table 1 epJt- � �i 20 x HCV Note:For #3 Appendix I �T� Note:For%HCV<5%,use ADT %HCV>5%, # DME approved RF EPT>ADT # For preliminary designs,use the lowest # RF value in the equation Design ADT C Use greater of ADT or EPT T oU CBRD x RF = SSV ( 4 ) x ( 1 ) = 1 Step 3: Pavement Design (Check appropriate box and show proposed pavement design below.) ❑ (A) Limited to Design ADT S 400-Show pavement material notations and thickness from Appendix IV Tables A and B. (13) Show pavement section as developed in the Pavement Design Guide DR= /4 5 (See Appendix 111 for material notations and thickness equivalency values(a)). from Appendix II Description of Proposed Pavement Section Material Notation Thickness,h a (a a h) Surface M ? 514 J, ZrL5 3,36 Base bNt -- 2- 5 3,o 2,15 (0,, 15 Subbase . TY'PE 1 , . u6 8,0 odoff 4, gp / Dp must equal or exceed the value of DR. DP=E(a x h)= 114(03 J U N 02 2005 29 COT, ;;1,4. 4 i=,—,,,:-LL1P ENT Zoo 6 Appendix 9B-2 LD-229 Storm Drain Design Computations M .c:d- /8t zap LD-229 ROUTE: PROJ: July 2000 STORM SEWER DESIGN COUNTY: A41 [.7►9 C DISTRICT: COMPUTATIONS DESCRIPTION: _GZ70/2->/& SHEET / OF / AREA RUN- INLET RAIN RUN- INVERT CAPA- FLOW DRAIN OFF CA TIME FALL OFF ELEVATIONS LENGTH SLOPE DIA CITY VEL. 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