HECRAS Basis Input HECRAS – sawyisi monacemebi

HECRAS Basis InputHECRAS – sawyisi monacemebi by G. Parodi WRS – ITC – The Netherlands g. parodi WRS-ITC- niderlandebi

The BasicssafuZvlebi Geometry Data. geometriuli monacemebi Flow Data. dinebis monacemebi Perform Hydraulic Computations hidravlikuri gaTvlebis Sesruleba Viewing the Output Sedegebis gamoxazva

Extent of study area Sesaswavliregionisganfeniloba Area of interest interesisare Boundary conditions sasazRvropirobebi Section locations and orientation seqciebisadgilmdebareobada orientacia Before you start…Layout the modelmanam daviwyebT....dagegmeT modeli

Geometry Data - the basicsgeometriuli monacemebi - safuZvlebi Cross-section information informacia ganivi kveTebis Sesaxeb Roughness coefficients xorklianobis koeficienti Distance between sections seqciebs Soris manZili Bridge/culvert data monacemebi xidebis/wyalsadenebis Sesaxeb

Cross Section Locationsganivi kveTebis adgilmdebareoba Place and measure cross sections when there is a change in: ganaTavseT da azomeT ganivi kveTebi rodesac icvleba: Slope ferdobis daxra Discharge xarji Roughness xorklianoba Channel shape dinebis forma Control (bridge, levee, weir, etc) kontroli (xidi, jebirebi, sagubari, a.S)

Cross section orientationganivi kveTebis orientacia Very important Zalian mniSvnelovania Survey perpendicular to flow aageT dinebis perpendikularulad May not be a straight line araa savaldebulo iyos swori xazi perpendikularulia dinebismimarT

Cross Section Spacing: Where to measure?Sualedebi ganiv kveTebs Soris: sad gavzomoT? In general: zogadad: Widely spaced for flat, very large rivers and closer for steep small streams farTodaa ganlagebuli brtyeli, Zalian msxvili mdinareebisTvis ufro axlos mcire da cicabo nakadebisTvis Very large rivers (Mississippi) on the order of a mile (1600 m) Zalian msxvili mdinareebisTvis (misisipi) 1 milis rigis (1600m) For large rivers on the order of 1000 feet (300 m) msxvili mdinareebisTvis 1000 futis rigis (300m) For slower streams on the order of 200 feet (60 m) neli dinebebisTvis 200 futis rigis (60m) For small creeks creeks of 25 feet (8 m) patara ubeebisTvis 25 futis rigis (8m) For supercritical reaches, on the order of 10 to 50 feet (3 to 15 m) superkritikuli gawvdomisTvis 10 - 50 futis is rigis (3 dan 15 m-mde) For drop structures, as low as 5 feet (1 m) danawevrebuli struqturebisTvis 5 fuTze naklebi (1 metramde) Can interpolate if reasonable (check results) SesaZloa interpolireba Tu aqvs azri (gadaamowmeT Sedegebi) Not too close (1’, may drop friction loses) Zalian axlos ara (1’, SeiZleba daanawevros xaxunis danakargi) X2 X1

Reach Lengths - Are they constant?gawvdomis sigrZe – mudmivia? High flow Rrmadineba Low flows dabalidineba perpendikularulia dinebismimarT

Survey shots must describe the channel and overbank flow area agegmvis mizania aRweros arxis (dinebis) da datborvis area Section should extend across the entire floodplain seqciebi unda vrceldebodnen mTeli xeobis gaswvriv Plot cross-section data, especially electronic surveys ganivi kveTis monacemebis amoxazva, gansakuTrebiT cifruli agegmareba Take photographs gadaiReT suraTebi Assume modeler has never seen the stream dauSviT, rom modelis Semqmnels arasodes unaxia mdinare Note vegetation changes in cross-section e.g. field, trees, grass buffer, etc. aRniSneT mcenareuli safaris cvalebadoba ganiv kveTebSi, magaliTad: saZovrebi, xeebi, balaxeuli buferebi da sxva No 3-point cross-sections ara 3 wertiliani ganivi kveTebi Surveytopografiuliagegmareba

HEC-RAS 3.0 Hydraulic User Manual, Figure 5.1 Bridge Surveysxidebis agegmareba SekumSvisgawvdoma • Profile road and bridge deck centerline • gzis da xidis savali nawilis RerZuli profilebi • Pier width, location • pirsis sigane, adgilmdebareoba • Low Chord Elevation • xidis savali nawilis umdablesi horizonti • Skew Angle (bridge - stream) • moxris kuTxe (xidi – nakadi) • Bridge opening • xidis gaxsnili nawili gafarTovebisgawvdoma

Basic Input - the modelmonacemebis Setanis ZiriTadi principebi - modeli

Double Click on HEC-RAS icon. orjerdaaWireT HEC-RAS-isRilaks Starting HEC-RAS – dasawyisi

Establish the Unit first pirvel rigSi miuTiTeT, erTeulovani sistema Click on File -New Project from the main menu to start a project imisTvis, rom daviwyoT axali proeqti, davaWiroT ZiriTad meniuSi “File - New Project ” Rilaks. Starting a Project- proeqtis dawyeba

Select a working directory SearCieT samuSao saqaRalde Then enter project title and file name Semdeg SeiyvaneT proeqtis saTauri da failis saxeli Starting a Projectproeqtis dawyeba

Starting a Projectproeqtis dawyeba Check the unit system before accepting. SeamowmeT erTeulovani sistema sanam daeTanxmebiT. Units can be change before or after the model is created. erTeulovani sistemis Secvla SesaZlebelia modelis Seqmnamde an Seqmnis Semdeg.

Stream Geometry Datanakadis geometriuli monacemebi To add data, click on Edit and Geometric Data monacemebisdasamatebladdaaWireT “Edit ” Rilaks da SearCieT“Geometric data” (geometriulimonacemebi) Or, you can click on the Geometry Editor button: an, SeiZleba SearCioT “Geometry editor”-is Rilaki

Suggested order of data entry: monacemebisSetanissasurveliTanmimdevroba: Add River Reach(es) along with any Junctions (actually, this must be first). daumateTmdinarisgawvdoma(ebi) yvelaSekavSirebisgaswvriv (esundaiyossawyisiqmedeba) Add Cross-Section names, elevation-station data, ‘n’ values, bank stations, reach lengths, loss coefficients, etc. SeiyvaneTganivikveTebissaxelebi, simaRlis-punqtebismonacemebi, “n” sidide, gawvdomissigrZe, danakargiskoeficienti da sxva. Add Road/Bridge/Culvert and/or Weir/Spillway data. SeiyvaneTmonacemebigzebis, xidebis, milsadenebis an/da wyalgadmosaSvebebisSesaxeb. Stream Geometry Datanakadis geometriuli monacemebi

River System Schematicmdinaris sistemis sqematizacia Must be added before any other features. unda iyos Setanili sanam sxva monacemebs miawvdiT programas. Draw and connect the reaches of the stream system. daxazeT da SeakavSireT mdinareTa sistemis yvela Senakadi. Draw from upstream to downstream, which will coincide with a flow direction arrow - generally from top of screen to bottom. Double click on last point to end. aageT sqema zeda dinebidan qveda dinebisken, romelic Seesabameba dinebis mimarTulebas – zogadad ekranis zemodan Zirisken. sqematuri naxazis dasasruleblad orjer daaWireT mausis saSualebiT bolo wertils. Connection of 3 reaches is a junction. 3 Senakadis dakavSireba (SeerTeba) aris SekavSireba Can model from single reach to complicated networks. The river can even split apart and then come back together. SesaZlebelia modelireba rogorc erTi Senakadis, aseve mdinareTa rTuli qselis. mdinare SeiZleba gaiyos nawilebad da mere isev SeerTdes. Can accentuate by adding background bitmap. SesaZlebelia aqcentebis gamokveTa rastruli rukis damatebiT.

River System Schematicmdinaris sistemis sqematizacia To add a River Reach, select the River Reach button from the Cross-Section Editor Window. imisTvis rom mdinaris gawvdoma davamatoT, avirCioT Rilaki “River Reach ” ganivi kveTis redaqtoris fanjridan Then add line(s) representing the schematic of the river(s) you are modeling. Single click between each segment of the line. After your last line segment, double click to end. Semdeg daamateT xazi(ebi), romlebic asaxaven mdinaris(ebis) sqematur ganlagebas. TiTojer daaWireT mdinaris xazovan segmentebs Soris. bolo segmentis asaxvis Semdeg orjer daaWireT mausis marcxena Rilaks.

River System Schematicmdinaris sistemis sqematizacia A window then pops up to allow you to enter the: gamoCndebafanjararomelicsaSualebasiZlevaSeiyvanoT: River name mdinarissaxeli Reach name gawvdomissaxeli

River System Schematicmdinaris sistemis sqematizacia The program then displays the river and its name in blue. The reach name is in black. amis Semdeg programa gamoaCens mdinares da mis saxels lurjad xolo gawvdomis saxeli Savia. Tributaries and/or additional reaches can be added to the main reach using the same procedure. igive proceduris gamoyenebiT SesaZlebelia Senakadebis an/da damatebiTi gawvdomis damateba ZiriTad mdinarisTvis.

Adding Cross Sections to Reachesganivi kveTebis damateba gawvdomisTvis. To add cross-section data, click on the “Cross-Section” button from the Geometry Data Window. ganivi kveTebis monacemebis dasamateblad daaWireT “Cross-Section” Rilaks geometriuli monacemebis fanjaraSi. This brings up the Cross Section Data window from where you choose “Options” and then “Add a new Cross-Section…” es gamoaCens ganivi kveTis monacemTa fanjaras saidanac “Options” –is arCeviT, SesaZlebelia axali ganivi kveTis damateba “Add a new Cross-Section…”

Adding Cross Sections to Reachesganivi kveTis damateba gawvdomisTvis Enter the cross-section name (it must be a number daumateT ganivi kveTis saxeli. (is unda iyos ricxvi It must be in numerical order - upstream = highest number) and select OK. is unda iyos ricxobrivi Tanmimdevrobis - zeda dineba = udidesi mniSvnelobiT) da Semdgom airCieT Tanxmobis Rilaki “ok”. Numbering is not related to progressive. gadanomrva araa dakavSirebuli mzardobasTan. To add a cross section between two existing ones, add a number in between. imisTvis, rom CaamatoT ganivi kveTi or arsebul ganiv kveTs Soris, davmateT maT Soris ricxvi. Number can be real or integers. ricxvebi SeiZleba iyos realuri an mTeli. 3 2 1

Entering Cross Section Dataganivi kveTis monacemebis Seyvana You can enter a lengthy description of the cross-section. SesaZlebelia SeviyvanoT ganivi kveTis grZivi aRweriloba.

Entering Cross Section Dataganivi kveTis monacemebis Seyvana This is the main Cross-Section Data window. Here you enter the basic cross-section data such as elevation-station data, reach lengths, ‘n’ values, bank stations, and contraction and expansion loss coefficients. es aris ganivi kveTis monacemebis ZiriTadi fanjara. aq Segvyavs ZiriTadi monacemebi ganivi kveTis Sesaxeb, iseTi informacia rogoricaa simaRlis sadguris monacemebi, gawvdomis sigrZe, “n ” sidide, sanapiro sadgurebi da SekumSvis da gafarToebis koeficientebi. Note help note Note: Orientation is looking downstream SeniSvna: orientaciaganisazRvrebaqvedadinebiskenxedvismixedviT.

Entering Cross Section Dataganivi kveTis monacemebis Seyvana There are several options available to further refine the cross section data. arsebobs ramodenime xelmisawvdomi paramertri ganivi kveTebis Semdgomi daxvewvisTvis. File editing tools failis redaqtirebis iaraRebi Geometric transformations and rescaling tools geometriuli transformaciis da masStabis Secvlis iaraRebi Editor of blocking, no flow and disturbances blokirebis redaqtireba, ara dineba da areva/aSliloba Editors and rescaling of roughness xorklianobis redaqtori da masStabis Semcvleli

Entering Cross Section Dataganivi kveTis monacemebis Seyvana A quick visual check of the data is available through the “Plot Cross Section (in separate window)“ option. profilis swrafi vizualizaciaa xelmisawvdomi da ixsneba “Plot Cross Section”-is gamoZaxebiT (gancalkevebul fanjaraSi). In ‘x’ the progressive “X”-Si progresuli In ‘y’ the absolute elevation with respect to a datum “Y”-Si absolituri simaRle datumTan mimarTebaSi Dots show stations wertilebi gviCveneben saguSagoebs Red dots separate channel from banks (left and right) wiTeli wertilebi ganacalkeveben arxs napirisgan (marjvenas da marcxenas) ‘n’ values display on top “N” sidide gamosaxulia zemo nawilSi Coordinates display as the mouse is moved around. koordinatebi gamosaxulia kursorze da icvleba moZraobisas ORIENTATION IS LOOKING DOWNSTREAM!! orientacia qveda dinebiskenaa !!!

Entering Cross Section Dataganivi kveTis monacemebis Seyvana XSections can be plotted from the editor. X seqcia SeiZleba gamosaxuli iyos redaqtoris daxmarebiT

Entering Cross Section Dataganivi kveTis monacemebis Seyvana Other but present sections can be shown in the same plot. sxva, magram arsebuli seqcia SeiZleba iyos naCvenebi igive naxazSi Ideal to check relative shape and elevation differences. idealuria sxvadasxva ganivi kveTis formis da gansxvavebis Sesadareblad

X-sections should extend across the entire floodplain and be perpendicular to anticipated flow lines (approximately perpendicular to ground contour lines). X seqciebi unda gaiWimos mTeli datborvis zonis gaswvriv da unda iyvnen perpendikularulebi winaswar gansazRvruli dinebis xazisadmi (daaxloebiT perpendikularuli izoxazis mimarT.). X-sections should accurately represent stream and floodplain geometry. Put in where changes occur in discharge, slope, shape, roughness, and bridges. X seqcia akuratulad unda gamoxatavdes nakads da datborili regionis geometrias. asaxavdes cvlilebebs xarjSi, daxraSi, formaSi, xorklianobaSi, da xidebSi. Enter X-Section elevation-station data from left to right as seen when looking downstream. SeiyvaneT X seqciis simaRlis-sadguris monacemebi marcxnidan marjvniv rogorc Cans Tu vuyurebT qvedadinebisken. Cross-Sections should start far enough downstream to “zero out” any errors in boundary conditions assumptions (for sub-critical profile). Far from upstream for super-critical flow. The section of analysis should be farm from boundary errors. ganivi kveTebi unda iwyebodes sakmarisad Sors qveda dinebisken “zero out”, sasazRvro pirobaTa varaudis (sub-kritikuliprofilisTvis) yvela cdomilebisgan. Sors zeda dinebisgan super-kritikuli dinebisTvis. analizis seqcia unda iyos Sors sasazRvro cdomilebisgan. Notes on Cross-Section DataSeniSvnebi ganivi kveTebis monacemebTan dakavSirebiT Actual Profile aqtualuriprofili Study Area Sesaswavliregioni Uncertain WS arasandoobawz

Notes on Cross-Section Data (cont)SeniSvnebi ganivi kveTebis monacemebTan dakavSirebiT • Location of X-sections within a reach varies with the intensity of the study and the conditions of the reach • X-seqciebis ganlageba dinebis gawvdomaSi icvleba Seswavlis intensivobasTan da Senakadis mdgomareobasTan erTad. • The choice of friction loss equations will also affect X-section spacing and predicted flood elevations • xaxunis danakargis gantolebis SerCeva, aseve zegavlenas axdens X seqciis intervalze da wylis donis prognozirebaze • Higher number X-section river stations are assumed to be upstream of lower number river stations. Slope areas require more X-sections. • X seqciebis raodenobis mateba xdeba qveda dinebidan zeda dinebis mimarTulebiT. cicabo regionebi moiTxoven met X seqcias. • The left side of the X-section, looking downstream, is assumed to have the lower X values and progress right as the X values increase, (can not narrow the section) • X seqciis marcxena mxares, dinebis mimarTulebiT, iTvleba, rom aqvs mcire X sidide da progresireba xdeba marjvena mxares.

Notes on Cross-Section Data (cont.)SeniSvnebi ganivi kveTebis monacemebTan dakavSirebiT • The left and right channel banks, must be given at a station located in the X-section elevation-station data set. (Figure shows only right bank) • dinebis marjvena da marcxena napirebi unda iyvnen mocemulni sadgurebSi, romelic ganlagebulia X seqciis simaRlis sadguris monacemTa jgufSi (suraTze gamosaxulia marjvena napiri). • Boundaries are fixed, can not reflect changes during a storm (scour deposition). • sazRvrebi fiqsirebulia, ar SeuZliaT asaxon qariSxliT gamowveuli cvlilebebi (gawmendili naleqebi) • X-section endpointsthat are below the computed water surface profile will be extended vertically to contain the routed flows with area/wetted perimeter reflecting this boundary condition. To avoid this, be certain that the cross section extends till a place where flood does not occur. • X seqciis bolo wertilebi, romelic ganlagebulia gadaTvlili wylis profilis dabla, gaiSleba vertikalurad raTa moicvas mimarTuli dineba dasvelebis perimetriTurT romelic asaxavs sasazRvro pirobebs. imisaTvis rom es Tavidan aviciloT, darwmundiT rom profili gadaWimulia im adgilamde, sadac wyaldidoba araa mosalodneli. Vertical extension of the section endpoint if the water floods it vertikaluriganvrcobaseqciis bolo wertilisTvis, Tuwyalidatboravs mas. X original right bank endpoint X sawyisimarjvenasanapiros bolo wertili Better right bank endpoint saukeTesobolo wertilimarjvenanapirisTvis

Notes on Cross-Section Data (cont.)SeniSvnebi ganivi kveTebis monacemebTan dakavSirebiT • Consider what is being modeled. The program can only reflect what is being entered. • warmoidgineT is, risi modelirebac daiwyeT. programa asaxavs moxlod imas, rac iyo Setanili For example: unless this hole is blocked, the model will assume that this area conveys flow magaliTad: Tuarxiararisdablokili, modeliCaTvlis, rom eszonaarisgadazidviszona

Notes on Cross-Section Data (cont.)SeniSvnebi ganivi kveTebis monacemebTan dakavSirebiT • HEC-RAS has an option to create interpolated cross sections. It can be used to create more “in between” sections as long as there are not section singularities. • HEC-RAS- s aqvs parametri Seqmnas interpolirebuli ganivi kveTebi. es parametri SeiZleba gamoviyenoT, segmentebs “Soris” meti ganivi kveTis Sesaqmnelad, iqamde, manam ar SeiniSneba seqciis specifikuroba. By reach gawvdomismixedviT

Notes on Cross-Section Data (cont.)SeniSvnebi ganivi kveTebis monacemebTan dakavSirebiT • HEC-RAS has an option to create interpolated cross sections in a reach or between two sections • HEC-RAS-s aqvs funqcia, romelic qmnis interpolirebul ganiv kveTs Senakadis gawvdomis or seqcias Soris Original sections Interpol. sections

X2 X1 Reach Lengthsgawvdomis sigrZe • Measured distances between X-Sections, reported as distance to D.S. X-Sections. gazomili distancia X-seqciebs Soris, warmodgenilia rogorc, manZili Dqveda dinebis-seqciebs Soris • 3 distances!!: Left overbank, right overbank, and channel • 3 saxis manZili!!: marcxena sanapiro, marjvena sanapiro da arxi • They can be very different for channels with large meander or in a bend of a river. • isini SeiZleba iyvnen Zalian gansxvavebulni didi meandreebiani (klaknili) nakadebisTvis an mdinaris moxvevis adgilebSi. • A discharge weighted total reach length is determined by HECRAS based on the discharges in the main channel and left and right overbank segments. • Xarjis datvirTvis gawvdomis sruli sigrZe, ganisazRvreba HECRAS -is mier ZiriTadi arxis xarjis da marcxena da marjvena datborvis zonebis segmentebze dayrdnobiT.

Expansion & Contraction CoefficientsgafarTovebis da kumSvis koeficienti Typical values for gradual transitions in supercritical flow are 0.05 for contraction and 0.10 for expansions. superkritikul dinebaSi tipiuri sidideebi TandaTanobiTi gadasvlisTvis aris 0.5. kumSivsTvis da 0.10 gafarToebisTvis. Constructed prismatic channels should have expansion and contraction coefficients of 0.0 agebul prizmul arxisaTvis rogorc wesi gafarTovebis da kumSvis koeficienti aris 0.0

Ineffective Flow AreasuSedego dinebis zona Ineffective flow areas are used to model portions of the cross-section in which water will pond, but the velocity of that water in the downstream direction is equal to zero. araefeqturi dinebis are gamoiyeneba im regionebis modelirebisTvis, sadac ganivi kveTebis garkveul nawilSi xdeba datborva, magram wylis dinebis siCqare qveda dinebisken utoldeba nuls This water is included in the storage and wetted cross section parameters, but not in the active flow area. am wylis odenoba Sedis “sacav” wylis raodenobaSi da svel perimetrebSi, magram ar ganixileba, rogorc aqtiuri dinebis are. No additional wetted parameter is added to the active flow area (unlike encroachments). damatebiTi sveli perimetri ar emateba aqtiuri dinebis ares Once ineffective flow area is overtopped, then that specific area is no longer considered ineffective. mas mere, rac araefeqturi dinebis are daitboreba, gansazRvruli are aRar ganixileba, rogorc araefeqturi Commonly used in culverts, near road crossings. rogor wesi gamoiyeneba gzis gadakveTebTan arsebuli wyalsadeni milebisTvis

Ineffective Flow AreasuSedego dinebis zona Two types of Ineffective Flow Areas : ori tipis araefeqturi dinebis are : 1. Normal where you supply left and right stations with elevations which block flow to the left of the left station and to the right of the right station normuli, iq sadac vawvdiT marcxena da marjvena saguSagoebs simaRlebiTurT, romlebic blokaven dinebas marcxena seqciis marcxena saguSagosken da marjvena seqciis marjvena saguSagosken. 2. Blocked where you can have multiple (up to 10) blocked flow areas within the X-section dablokili – sadac SesaZlebelia gvqondes ramodenime (10mde) dablokili dinebis are X seqciis farglebSi.

Once water surface goes above the established elevations, then that specific area is no longer considered ineffective. mas mere rac, wylis zedapiri ascdeba gansazRvrul simales, es specifikuri are aRar ganisazRvreba, rogorc araefeqturi are Normal Ineffective Flows normuli araefeqturi dineba Once water surface goes above the established elevations of the block, then that specific area is no longer considered ineffective. mas mere rac, wylis zedapiri ascdeba gansazRvrul blokebis simaRles, es specifikuri are aRar ganisazRvreba, rogorc araefeqturi Blocked Ineffective Flows dablokili araefeqturi dineba

Ineffective Flow AreasuSedego dinebis zona Option is from x-section window... parametri gamoCndeba X seqciis fanjaraSi . . . which brings up this window: SedegadgamoCndeba

Ineffective Flow AreasuSedego dinebis zona The plotted x-section looks like this: gamosaxuli X seqciagamoiyurebaSemdegnairad:

Ineffective Flow Areasaraefeqturi dinebis zona Think of them as dead storage zones CavTvaloT mkvdar akumulaciis zonad

Blocked Obstructionsdablokili dabrkoleba Used to define areas that will be permanently blocked out. gamoiyeneba gansazRvruli arealisTvis, romelic iqnebian mudmivad dablokili Decreases flow area and increases wetted perimeter when the water comes in contact with it. amcirebs wylis gadinebas da amaRlebs dasvelebis perimetrs, rodesac wyali Semodis kontaqtSi. Two types of blocked obstructions are available - Normal and Multiple. They are very similar to the Ineffective Flow areas, except that the blocked areas are never available as water flow areas. ori saxis dablokili dabrkoleba aris xelmisawvdomi – saSualo da mravalricxovani. isini arian msgavsi araefeqturi dinebis zonis, gansxvavdebian imiT, rom dablokili zona arasodes ganixileba rogorc wylis dinebis zona. Water can get to the off-sides of these obstructions. wyals SeuZlia gaaRwios am dabrkolebis gareTac.

the blocked areas are never available as water flow areas. dablokili zonebi ar ganixileba, wylis dinebis zonebad Normal Blocked Obstruction normuli dablokili dabrkoleba the blocked areas are never available as water flow areas. dablokili zona arasodes ganixileba rogorc wylis dinebis zina Multiple Blocked Obstructions ramodenime dablokili dabrkoleba

Blocked Obstructionsdablokili dabrkoleba Option is from x-section window... Pparametri aris X seqciis fanjaraSi which brings up this window: racgamaoCensSemdegfanjaras

Blocked Obstructionsdablokili dabrkoleba The plotted x-section looks like this: daxazuliX seqciagamoiyurebaSemdegnairad:

Leveesjebirebi • No water can get outside of a levee until it is overtopped. • wyaliargadisjebirebsgareT, manamarmoxdebadatborva • Simulated by a vertical wall. • simulaciaxdebavertikalurikedlisgamoyenebiT • Additional wetted perimeter is included when water comes in contact with the levee wall • damatebiTisveliperimetridaematebamaSin, rodesacwyaliSediskontaqtSijebirebiskedlebTan

Levees jebirebi

Leveesjebirebi Option is from x-section window... parametri aris X seqciis fanjaraSi... which brings up this window: risSedegadacCndebafanjara:

HECRAS Basis Input HECRAS – sawyisi monacemebi