Pamene Barbara Walker Crossing idapangidwa koyamba mu 2012, ntchito yake yayikulu inali kupulumutsa oyenda ndi othamanga pa Portland's Wildwood Trail zovuta zopewera magalimoto pamsewu wotanganidwa wa West Burnside.
Zinakhala umboni wa zomangamanga zodziwika bwino, kuphatikiza zothandiza komanso kukongola kwa anthu ammudzi omwe amafunikira (ndikuwafuna) onse.
Umalizidwa mu Okutobala 2019 ndikutsegulira mwezi womwewo, mlathowu ndi msewu wa anthu oyenda pansi wa 180 womwe wakonzedwa kuti ukhale wokhota komanso wopangidwa kuti ugwirizane ndi nkhalango yozungulira.
Idapangidwa kunja kwa malo ndi kampani yomwe tsopano yatha ya Portland Supreme Steel Company, idadulidwa m'magawo atatu akulu, kenako ndikuyitumiza kumaloko.
Kukwaniritsa zofunikira zowonera ndi zomangamanga kumatanthauza kugwiritsa ntchito zida zomwe zingakwaniritse zolinga zapadera kwambiri za polojekitiyi, mwaluso komanso mwamapangidwe. Izi zikutanthauza kugwiritsa ntchito mapaipi - apa 3.5″ ndi 5″.corten (ASTM A847) machubu achitsulo opangidwa ndi zomangira zomwe zimafunikira zowotcherera kapena zokhotakhota zimawonekera (zolumikizana ndi makiyi obiriwira zimawonekera). kufanana ndi denga la nkhalango.
Ed Carpenter, mlengi ndi wojambula okhazikika m'makhazikitsidwe akuluakulu a anthu, adanena kuti anali ndi zolinga zingapo pamene adatenga mlatho. Pakati pawo, mlathowu uyenera kuphatikizidwa muzochitika za nkhalango, zomwe ndi kupitiriza kwa kumverera ndi zochitika za njirayo, ndipo ziyenera kukhala zofewa komanso zowonekera momwe zingathere.
Carpenter, yemwenso ndi wokonda kunja, anati: “Chifukwa chakuti chimodzi mwa zolinga zanga zofunika kwambiri zopanga mlathowo chinali chakuti mlathowo ukhale wosalimba komanso woonekera bwino, ndinafunika zipangizo zolimba kwambiri ndiponso zomangira zaluso kwambiri. .Kuyenda panjira ya njanji ya Portland kwa zaka zoposa 40.” Mungaipange pogwiritsa ntchito zipangizo zina, koma mipope yachitsulo kapena mipope ndiyo kusankha kwanzeru.
Malinga ndi ntchito yomanga, kukwaniritsa zonsezi sikophweka.Stuart Finney, katswiri wa zomangamanga ku Portland ofesi ya zomangamanga KPFF komanso yemwe kale anali woyang'anira polojekiti ya mlatho, adanena bwino kuti kuwotcherera zigawo zonse pamagulu a TYK kumene mipope yothandizira imakumana mwina inali yovuta kwambiri. zinayambitsa mavuto aakulu kwa gulu lomanga.
Finney, amene wakhala akuchita ntchitoyi kwa zaka 20, anati: “Choonadi, mfundo zonse n’zosiyana.” Iwo anafunika kukonza mfundo zonse kuti mapaipi onsewa alumikizike pamfundo imodzi, kuti azitha kumawotcherera pozungulira mapaipiwo.
Barbara Walker Crossing mlatho wa anthu oyenda pansi umadutsa mumsewu wa Burnside womwe uli ndi anthu ambiri ku Portland. Udakhalapo mu Okutobala 2019.
Kuwotcherera kuyenera kusinthidwa kotheratu.
Dzina la Ferry, Barbara Walker (1935-2014), wakhala wothandiza kwambiri pachitetezo cha Portland kwa zaka zambiri, ndipo ndi wamphamvu pang'ono pachilengedwe. zomwe zinaphatikizapo Wildwood Trail ndi Bridge.
Monga momwe Walker adapezera ndalama zokwana $500,000 kuchokera kwa anthu ku Pioneer Courthouse Square ($ 15 pamwala woyalidwa), bungwe lopanda phindu la Portland Parks Foundation lidapeza $2.2 miliyoni kuchokera ku zopereka zapadera za 900 kuti zithandizire kulipira mlathowu.
Carpenter adati kuphatikiza mawu ndi mawu ambiri pantchitoyo kunali kovuta, koma ndikofunikira.
"Ndikuganiza kuti chofunika kwambiri ndi mgwirizano wamagulu, kunyada kwakukulu, ndi chiyanjano chachikulu - anthu akulipira," Carpenter anatero." Osati anthu payekha, koma mizinda ndi zigawo.
Finney anawonjezera kuti iye ndi gulu lake, ndi opanga omwe ali ndi udindo wopangitsa mapangidwewo kukhala amoyo, adayenera kuthana ndi zovuta zambiri muzojambula za 3D zomwe adachita, chifukwa cha zovuta zonse zamagulu ndi zolumikizira.
Finney anati: “Tikugwira ntchito ndi akatswiri athu kuti titsimikize kuti zitsanzo zonse zili pa mzere chifukwa kachiwiri, palibenso cholakwika ndi zambiri mwa mfundozi chifukwa cha kucholoŵana kwa geometry,” anatero Finney.” Ndithudi, milatho yambiri ndi yowongoka, ngakhale yokhotakhota imakhala ndi zokhotakhota, ndipo zipangizo zake n’zosavuta.
"Chifukwa cha izi, pali zovuta zambiri zomwe zimabwera m'ntchitoyi. Ndikhoza kunena kuti ndizovuta kwambiri kuposa [ntchito] yanthawi zonse. Zimatengera ntchito yaikulu kuti aliyense akwaniritse ntchitoyi."
Komabe, malinga ndi kunena kwa Carpenter, pakati pa zinthu zofunika kwambiri pa kucholoŵana kwa mlathowo, chimene chimapangitsa kuti mlathowo ukhale ndi zotsatira zake zonse ndicho denga lopindika.
"Ndikuganiza kuti mapangidwe abwino nthawi zambiri amayamba ndi kuchita zinthu mwanzeru kenako n'kupita kuzinthu zina," Carpenter anatero." Izi ndi zomwe zinachitika pa mlathowu. Ndikuganiza kwa ine, chinthu chofunika kwambiri ndi siteshoni yokhotakhota. Pamenepa, sindikumva bwino ndi maswiti chifukwa njira yonseyi imakhala yopindika komanso yopindika.
Barbara Walker Crossing mlatho wa anthu oyenda pansi adapangidwa kuchokera pamalo pomwe, adagawika magawo awiri, kenako adanyamulidwa kupita komwe ali pano.Portland Parks Foundation.
"Kodi mumapangira bwanji sitima yokhotakhota? Chabwino, zimakhala, ndithudi, truss yamitundu itatu imagwira ntchito bwino pamapindikira. Mumapeza chiŵerengero chabwino kwambiri cha kuya ndi kutalika. Kotero, mungachite chiyani ndi katatu katatu kuti ukhale wokongola ndi Wokongola, ndikutchula za nkhalango m'njira yomwe imapangitsa kuti izi ziwoneke ngati sizingasunthike kuzinthu zina - ndikuyambanso kuchitapo kanthu? Kapenanso kungoganiza chabe .Anthu ena amangochita zinthu mosiyana, koma ndi mmene ndimagwirira ntchito.”
Kapentala makamaka amayamikira antchito a KPFF chifukwa chomulimbikitsa kuti agwiritse ntchito mapaipi kupyola sitimayo, zomwe zinapatsa mlatho kukhala wachilengedwe komanso wachilengedwe kuchokera kunkhalango.
"Ndizosangalatsa kukhala ndi china chake chopatsa mzinda uno ndikunyadira nacho, komanso zabwino kuthana ndi zovuta zaukadaulo," adatero Finney.
Malinga ndi bungwe la Portland Parks Foundation, anthu pafupifupi 80,000 oyenda pansi adzagwiritsa ntchito mlathowu chaka chilichonse, kupulumutsa vuto lodutsa gawo lina lamsewu lomwe limawona magalimoto pafupifupi 20,000 patsiku.
Masiku ano, mlathowu ukupitiriza masomphenya a Walker ogwirizanitsa anthu okhala ku Portland ndi alendo ku kukongola kwa chilengedwe chozungulira.
Walker (wotchulidwa ndi World Forestry Center) anati: “Tiyenera kupatsa anthu a m’tauni mwayi wopeza zinthu zachilengedwe.” Chisangalalo chokhudza chilengedwe chimabwera chifukwa chokhala kunja.” Sitingaphunzire m’maganizo mwathu.
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