Pamene sitima ya Barbara Walker Crossing inapangidwa koyamba mu 2012, ntchito yake yayikulu inali yothandiza anthu oyenda pansi komanso othamanga pa Wildwood Trail ya Portland kupewa mavuto obwera chifukwa chopewa magalimoto ambiri pa msewu wotanganidwa wa West Burnside Road.
Unali umboni wa zomangamanga zodziwika bwino, kuphatikiza ubwino ndi kukongola kwa anthu ammudzi omwe amaona zonse kukhala zofunika (ndipo amafuna) zonse ziwiri.
Mlathowu, womwe unamalizidwa mu Okutobala 2019 ndipo unatsegulidwa mwezi womwewo, ndi njira yoyendamo anthu oyenda pansi ya mamita 180 yomwe ikukonzekera kupindika ndikupangidwa kuti igwirizane ndi nkhalango yozungulira.
Inapangidwa kunja kwa malo ndi kampani ya Portland Supreme Steel yomwe tsopano siiliko, inadulidwa m'zigawo zitatu zazikulu, kenako inanyamulidwa ndi galimoto yaikulu kupita kumaloko.
Kukwaniritsa zofunikira zowoneka ndi zomangamanga kunatanthauza kugwiritsa ntchito zipangizo zomwe zingakwaniritse zolinga zonse zapadera za polojekitiyi, mwaluso komanso mwa kapangidwe kake. Izi zikutanthauza kugwiritsa ntchito mapaipi - pankhaniyi mapaipi achitsulo a 3.5″ ndi 5″.corten (ASTM A847) opangidwa kuti agwiritsidwe ntchito pazida zomwe zimafuna kulumikizana kolumikizidwa kapena maboliti. Mapaipi ena amaonekera (chinthu china chofunikira kwambiri cha Corten) ndipo ena amapakidwa utoto wobiriwira kuti agwirizane ndi denga la nkhalango.
Ed Carpenter, katswiri wopanga mapulani komanso wojambula zithunzi wodziwa bwino ntchito zomangira anthu ambiri, anati anali ndi zolinga zingapo m'maganizo mwake pamene ankaganiza za mlathowu. Pakati pa zolinga zimenezi, mlathowu uyenera kuphatikizidwa ndi nkhalango, zomwe zimasonyeza kupitiriza kwa kumverera ndi zochitika za njirayo, ndipo uyenera kukhala wofewa komanso wowonekera momwe zingathere.
“Popeza chimodzi mwa zolinga zanga zofunika kwambiri pakupanga mlatho chinali kupanga mlatho kukhala wofewa komanso wowonekera bwino, ndinkafunika zipangizo zogwirira ntchito bwino kwambiri komanso dongosolo logwirira ntchito bwino kwambiri—kotero, ma trus a ma chord atatu,” akutero Carpenter, yemwenso ndi wokonda kwambiri zakunja. .Ndakhala ndikuyendetsa njira yayikulu ya Portland kwa zaka zoposa 40.” Mutha kuupanga ndi zipangizo zina, koma mapaipi achitsulo kapena mapaipi ndi chisankho chanzeru.
Poganizira zomangamanga, kukwaniritsa zonsezi sikophweka. Stuart Finney, mainjiniya wa zomangamanga mu ofesi ya kampani ya uinjiniya ya KPFF ku Portland komanso yemwe kale anali woyang'anira ntchito ya mlatho, anati kuwotcherera bwino zida zonse pa malo olumikizirana a TYK komwe mapaipi onse othandizira amakumana mwina ndiko kovuta kwambiri. Mbali imodzi ya khama lonselo. Makamaka, ma ngodya osiyanasiyana ofunikira pa mitundu yosiyanasiyana ya ma weld, monga ma weld ndi ma grooves, adapanga zovuta zazikulu kwa gulu lomanga.
“Kwenikweni cholumikizira chilichonse chimakhala chosiyana,” akutero Finney, yemwe wakhala akuchita ntchito imeneyi kwa zaka 20.” Anayenera kupanga cholumikizira chilichonse kukhala changwiro kuti mapaipi onsewa alumikizane pamodzi pa mfundo imodzi, ndipo athe kupeza ma weld okwanira kuzungulira mapaipi onse.
Mlatho wa oyenda pansi wa Barbara Walker Crossing umadutsa msewu wa Burnside Road ku Portland womwe uli ndi magalimoto ambiri. Unayamba kugwira ntchito mu Okutobala 2019. Shane Bliss
"Zosefera ziyenera kusinthidwa kwathunthu. Kusefera kungakhale chimodzi mwa zinthu zovuta kwambiri popanga zinthu."
Dzina la Ferry, Barbara Walker (1935-2014), wakhala chinsinsi cha khama la Portland losamalira zachilengedwe kwa zaka zambiri, ndipo iyenso ndi mphamvu yachilengedwe. Wachita nawo ntchito zambiri za anthu ku Portland, kuphatikizapo Marquam Nature Park, Pioneer Courthouse Square ndi Powell Butte Nature Park. Analimbikitsanso mosatopa zomwe zinadziwika kuti 40-Mile Loop, zomwe zinaphatikizapo Wildwood Trail ndi Bridge.
Monga momwe Walker adasonkhanitsira ndalama zokwana $500,000 kuchokera kwa anthu onse ku Pioneer Courthouse Square ($15 pa mwala uliwonse wopaka miyala), bungwe lopanda phindu la Portland Parks Foundation lasonkhanitsira ndalama zokwana $2.2 miliyoni kuchokera ku zopereka zachinsinsi pafupifupi 900 kuti zithandizire kulipira ndalama zomangira mlatho. Mzinda wa Portland, Portland Parks & Recreation ndi mabungwe ena adapereka ndalama zotsalazo pa ndalama zokwana $4 miliyoni.
Carpenter anati kusakaniza mawu ndi mawu ambiri pa ntchitoyi kunali kovuta, koma kunali koyenera.
"Ndikuganiza kuti chofunika kwambiri ndi mgwirizano wabwino wa anthu ammudzi, kunyada kwakukulu, ndi kutenga nawo mbali kwakukulu — anthu akulipira zimenezo," anatero Carpenter. "Osati anthu paokha, komanso mizinda ndi zigawo. Ndi ntchito yabwino kwambiri yogwirira ntchito limodzi."
Finney adawonjezera kuti iye ndi gulu lake, ndi opanga omwe adayambitsa mapangidwewo, adayenera kuthana ndi zovuta zambiri zomwe zidachitika mu 3D modeling zomwe adachita, chifukwa cha zovuta zonse za maulumikizidwe ndi zolumikizira.
“Tikugwira ntchito ndi akatswiri athu okonza zinthu kuti tiwonetsetse kuti mitundu yonse ikugwirizana chifukwa, palibe cholakwika ndi malo ambiri olumikizirana awa chifukwa cha zovuta za mawonekedwe ake,” adatero Finney. “Ndizovuta kwambiri kuposa zambiri. Milatho yambiri ndi yowongoka, ngakhale yokhota ili ndi ma curve, ndipo zipangizo zake ndi zosavuta.
"Chifukwa cha zimenezi, pali zovuta zambiri zomwe zimabwera mu polojekitiyi. Ndinganene kuti ndi zovuta kwambiri kuposa [pulojekiti] wamba. Zimafunika ntchito yambiri kuti aliyense akwaniritse ntchitoyi."
Komabe, malinga ndi Carpenter, pakati pa zinthu zofunika kwambiri pa kuuma kwa mlathowu, chomwe chimapangitsa kuti mlathowu ukhale ndi mphamvu zake zonse ndi denga lopindika. Kodi ndikoyenera kuvutika kuchita izi? Inde, makamaka.
“Ndikuganiza kuti kapangidwe kabwino nthawi zambiri kamayamba ndi zinthu zothandiza kenako n’kupita patsogolo,” anatero Carpenter. “Ndi zomwe zinachitikadi pa mlatho uwu. Ine ndikuganiza kuti chofunika kwambiri ndi malo okhota. Pankhaniyi, sindikumva bwino za malo otsetsereka chifukwa njira yonse ndi yopapatiza komanso yokhota. Sindikufuna kungotembenukira kumanzere pang’ono kudutsa mlatho kenako n’kutembenukira kumanzere pang’ono ndikupitiriza.
Mlatho wa oyenda pansi wa Barbara Walker Crossing unapangidwa kunja kwa malo, unagawika m'magawo awiri akuluakulu, kenako unanyamulidwa ndi galimoto yaikulu kupita komwe uli panopa. Portland Parks Foundation
"Kodi mumapangira bwanji desiki yokhotakhota? Chabwino, zikuoneka kuti, truss ya ma chord atatu imagwira ntchito bwino kwambiri pa curve. Mumapeza chiŵerengero chabwino kwambiri cha kuya ndi span. Ndiye, mungatani ndi truss ya ma chord atatu kuti ikhale yokongola komanso yokongola, ndikutchula nkhalango mwanjira yomwe imapangitsa kuti iwoneke ngati singakhale kwina kulikonse? Yambani ndi zothandiza, kenako pitani ku - kodi liwulo ndi chiyani? - kupita ku maloto. Kapena kuchokera ku zothandiza kupita ku malingaliro. Anthu ena angachite mosiyana, koma ndi momwe ndimagwirira ntchito."
Carpenter makamaka amayamikira gulu la KPFF chifukwa chomupatsa chilimbikitso chomwe amafunikira kuti apime mapaipiwo kupitirira padenga, zomwe zinapatsa mlathowo mawonekedwe abwino komanso omveka bwino ochokera m'nkhalango. Ntchitoyi inatenga zaka pafupifupi zisanu ndi ziwiri kuyambira pachiyambi mpaka kutsegulidwa kwakukulu, koma Finney anasangalala kukhala ndi mwayi wokhala nawo mbali.
"Ndikosangalatsa kukhala ndi china chake chopatsa mzinda uno ndikunyadira nacho, komanso ndikosangalatsa kuthana ndi vuto labwino la uinjiniya," adatero Finney.
Malinga ndi Portland Parks Foundation, anthu oyenda pansi pafupifupi 80,000 amagwiritsa ntchito mlatho wa anthu oyenda pansi chaka chilichonse, zomwe zimathandiza kuti anthu asamavutike kuwoloka msewu womwe umadutsa magalimoto pafupifupi 20,000 patsiku.
Lero, mlathowu ukupitirizabe masomphenya a Walker ogwirizanitsa anthu okhala ku Portland ndi alendo ku kukongola kwa malo achilengedwe ozungulira.
“Tiyenera kupatsa anthu a m’mizinda mwayi wodziwa zachilengedwe,” anatero Walker (yemwe adatchulidwa ndi World Forestry Center) nthawi ina. “Chisangalalo cha chilengedwe chimachokera ku kukhala panja. Sichingaphunziridwe m’chithunzithunzi. Poona chilengedwe maso ndi maso, anthu amakhala ndi chikhumbo chokhala oyang’anira malo.”
Lincoln Brunner ndi mkonzi wa The Tube & Pipe Journal. Iyi ndi nthawi yake yachiwiri ku TPJ, komwe adakhala mkonzi kwa zaka ziwiri asanathandize kuyambitsa TheFabricator.com monga woyang'anira zinthu pa intaneti woyamba wa FMA. Pambuyo pa zomwe adachita bwino kwambiri, adakhala zaka 17 mu gawo lopanda phindu monga mtolankhani wapadziko lonse lapansi komanso director wa kulumikizana. Ndi wolemba wofalitsidwa ndipo walemba zambiri pazinthu zosiyanasiyana zamakampani opanga zitsulo.
Magazini ya Tube & Pipe Journal inakhala magazini yoyamba yodzipereka kutumikira makampani opanga mapaipi achitsulo mu 1990. Masiku ano, ikadali magazini yokhayo ku North America yodzipereka ku makampani opanga mapaipi ndipo yakhala gwero lodalirika kwambiri la chidziwitso kwa akatswiri opanga mapaipi.
Tsopano popeza tili ndi mwayi wopeza kope la digito la The FABRICATOR, titha kupeza mosavuta zinthu zofunika kwambiri m'makampani.
Magazini ya digito ya The Tube & Pipe Journal tsopano ikupezeka mosavuta, zomwe zimapangitsa kuti zinthu zofunika kwambiri m'makampani zipezeke mosavuta.
Sangalalani ndi mwayi wonse wopeza kope la digito la STAMPING Journal, lomwe limapereka kupita patsogolo kwaposachedwa kwaukadaulo, njira zabwino kwambiri komanso nkhani zamakampani pamsika woponda zitsulo.
Tsopano ndi mwayi wonse wopeza kope la digito la The Fabricator en Español, mwayi wopeza zinthu zofunika kwambiri m'makampani.