過程中文件二-written

General設(shè)：要設(shè)計的路在加州與其他州相交的地方ThisisaruralhighwayinSanJose,locatedat37°20′07″N121°53′31″W.Itisatwolaneruralhighway(Minorarterial).Thetotallengthoftheroadis1196,passingroundfromnorthtosouth.Therearetwocurvesalongtheroad.Thedesignspeedis35 /h.ThegivendrawingsareANSIA(11”X17”)withascaleof1/32”=1’(1:384).Theroadlocatedinafoothillsettingwithlowdipsandsubduedtopography.Theslopeisnomorethanx對于道路來說，高差小是較為有利的一個條件，它能提供一個較為平穩(wěn)的地SubtropicalMediterraneanclimate.(CentralCoastregionofthenineclimateSanJosehas300+daysofsunshine,a agedailyhightemperatureof73°F(23°C)annuallyandalightrainfall.ScopeofWehavexxroadstation, x x.Thetotallength Residentsintheexistingdevelopment:Theyhavethreetrafficmode,bycar,bybicycleoronfoot.Wecanimplyfromthetopographythatthemaintrafficmodesaredriving出行為主。因此，設(shè)計了自行車道，以及橫道線，提供住在那里的村民出入便Vehiclespassingby:Wesupposedthat%aretrucks,%arebusesand%arepassengerAsshowninMailertheexpectedADTis3400vpd.所以鑒于日交通量較少，以及路寬的限定，只設(shè)計了單車道。Levelof認(rèn)為該道路注重的是車輛的通行能力。因而服務(wù)水平定為LOSBDesign35因為曲線的最小半徑為…，而通過規(guī)范的查閱與計算，發(fā)現(xiàn)滿足的速度要求莊，考慮到駕駛以及周圍出行村名的安全，所以設(shè)定了一個較小的設(shè)計速度。alignmentGeometricLeftshoulder Leftlane Rightlane Rightshoulder SightStopsightdistance:Passingsightdistance:LandPavementForasphaltshoulders,thethicknessoftheasphaltlayer(notincludingnonstructuralwearingsurface)shouldnotbelessthan0.35footorthethicknessoftheasphaltlayeroftheadjacenttrafficlane,whicheverisless.Forconcreteshoulders,apavementstructureof0.70footundoweledjointedplainconcretepavement(0.85footinHighMountainandHighDesertclimateregions)overaggregatebaseissufficienttomeettherequirementoftheTInotexceeding9.0andprovideadequatestructureformaintenanceequipmentandtemporarytrafficdetours.ternateshoulderdesignistotrthesurfacecoursefromthesurfacecoursethicknessoftheadjacenttrafficlanetonolessthan0.60foot(0.75footinHighMountainandHighDesertclimateregions)forconcreteand0.35footforasphaltattheedgeofshoulder(seeFigure613.5B).只有這個還是shoulder的TrafficyieldstopMiscellaneousWarningInterstateRouteSign(因為周圍比較荒涼、所以假定這個地區(qū)屬于跨州地區(qū)speedlimitIllustrationofDirectionalCost表HowthedesignmeetsnciesumBikeExpected3400RuralRuralPostedSpeed55mphLandAccessWebelievetheroadwaymainlyservestheresidentsintheexistingdevelopment.So。BenefitoftheWehaveexperimentedwithseveralprojectsandfinallywechooseitforsomeThedesi