Pakatanga kugadzirwa chikepe cheBarbara Walker Crossing muna 2012, basa rayo guru raive rekudzivirira vanofamba netsoka nevanomhanya paWildwood Trail yePortland kuti vasapinda mumigwagwa ine vanhu vakawanda muWest Burnside Road.
Yakava uchapupu hwekuvaka kwakanyatsojeka, kusanganisa kushanda uye runako rwenharaunda yaikoshesa (uye yaida) zvese zviri zviviri.
Bhiriji iri rakapedzwa muna Gumiguru 2019 uye rakavhurwa mumwedzi mumwe chete, inzira yekufamba netsoka ine urefu hwemamita 180 yakarongwa kuti igokoshwa uye ienderane nesango rakaripoteredza.
Yakagadzirwa kunze kwenzvimbo yacho nePortland Supreme Steel Company iyo yava kusisipo, ikachekwa kuita zvikamu zvitatu zvikuru, ndokuzoendeswa kunzvimbo yacho nemotokari.
Kuzadzisa zvinodiwa nemaziso nekuvaka kwaireva kushandisa zvinhu zvaizozadzisa zvinangwa zvese zvakasiyana zvepurojekiti, zvese zvehunyanzvi uye zvemaumbirwo. Izvi zvinoreva kushandisa mapaipi - muchiitiko ichi mapaipi esimbi e3.5″ uye 5″ (ASTM A847) akagadzirirwa zvivakwa zvinoda kubatana kwakabatana kana mabhaudhi. Mamwe mapaipi anoonekwa (chimwe chinhu chakakosha cheCorten) uye mamwe akapendwa girini kuti aenderane nedenga resango.
Ed Carpenter, mugadziri uye muimbi ane hunyanzvi mukuisa zvivakwa zvikuru zvevanhu, akati aive nezvinangwa zvakawanda mupfungwa dzake paakafunga nezvebhiriji. Pakati pazvo, bhiriji rinofanira kubatanidzwa mumasango, izvo zvinoenderera mberi nekunzwa uye ruzivo rwenzira, uye rinofanira kuva rakapfava uye rakajeka sezvinobvira.
"Nekuti chimwe chezvinangwa zvangu zvakakosha zvekugadzira chaive chekuita kuti bhiriji rive rakapfava uye rakajeka, ndaida zvinhu zvinoshanda zvakanyanya uye hurongwa hwekuvaka hunoshanda zvakanyanya - saka, mapuranga ane chord nhatu," anodaro Carpenter, uyo anofarirawo zvekunze. .Ndichimhanya munzira huru yePortland kwemakore anopfuura makumi mana." Unogona kurivaka nezvimwe zvinhu, asi mapaipi esimbi kana mapaipi ingori sarudzo ine musoro.
Kubva pakuona kwekuvaka, kuita zvese izvi hakusi nyore. Stuart Finney, mainjiniya wekuvaka muhofisi yekambani yeinjiniya yeKPFF kuPortland uye aimbove maneja wepurojekiti yebhiriji, akati kubatanidza zvikamu zvese panosangana mapaipi eTYK pamwe ndiko kwaive kwakaoma zvikuru. Chimwe chezvinhu zvese zvaiitwa. Kunyanya, makona ese akasiyana anodiwa pamhando dzakasiyana dzewelds, dzakadai semafillet welds nemagrooves, zvakakonzera matambudziko makuru kuchikwata chekuvaka.
"Chaizvoizvo, majoini ese akasiyana," anodaro Finney, uyo ave achiita basa iri kwemakore makumi maviri." Vaifanira kugadzira majoini ese akakwana kuitira kuti mapombi aya ese abatanidzwe pamwe chete pafundo rimwe chete, uye vagone kuwana welds dzakakwana dzakatenderedza mapombi ese.
Bhiriji reBarbara Walker Crossing rinoyambuka Burnside Road muPortland. Rakatanga kushanda muna Gumiguru 2019. Shane Bliss
"Weldings dzinofanira kushandurwa zvachose. Welding inogona kuva chimwe chezvinhu zvakaoma zvikuru pakugadzira."
Zita raFerry, Barbara Walker (1935-2014), anga ari musimboti wemabasa ekuchengetedza ePortland kwemakore, uye iye pachake isimba rezvisikwa. Akaita basa guru mumapurojekiti akawanda everuzhinji muPortland, anosanganisira Marquam Nature Park, Pioneer Courthouse Square nePowell Butte Nature Park. Akatsigirawo asinganeti zvakazozivikanwa se40-Mile Loop, iyo yaisanganisira Wildwood Trail neBridge.
Sezvakangoita Walker paakaunganidza mari inosvika $500,000 kubva kune veruzhinji yePioneer Courthouse Square ($15 padombo rimwe nerimwe), sangano risingabatsiri rePortland Parks Foundation rakaunganidza mari inosvika $2.2 miriyoni kubva pamipiro yevanhu inosvika 900 yekubatsira pakuvaka bhiriji. Guta rePortland, Portland Parks & Recreation nedzimwe sangano dzakapa mari yasara yemari inosvika $4 miriyoni.
Carpenter akati kubatanidza manzwi akawanda pachirongwa ichi kwaive kwakaoma, asi kwakakodzera.
"Ini ndinofunga kuti chiitiko chakakosha zvikuru kushanda pamwe chete munharaunda, kudada kukuru, uye kubatanidzwa kukuru - vanhu vari kubhadhara izvozvo," akadaro Carpenter. "Kwete vanhu vega vega, asi maguta nemadunhu. Ibasa guru rekushandira pamwe chete."
Finney akawedzera kuti iye nechikwata chake, pamwe nevagadziri vane basa rekuita kuti magadzirirwo acho avepo, vaifanira kukunda matambudziko mazhinji mu3D modeling yavakaita, nekuda kwekusanzwisisika kwemajoini nemidziyo.
"Tiri kushanda nevagadziri vedu vemagadzirirwo emota kuti tive nechokwadi chekuti mamodheru ese akarongeka nekuti zvakare, hapana mukana wekukanganisa nemajoini mazhinji aya nekuda kwekuoma kwejometri," akadaro Finney. "Zvakaoma kupfuura mazhinji. Mabhiriji mazhinji akatwasuka, kunyangwe akakombama ane makombama, uye zvinhu zviri nyore kushandisa.
"Nekuda kweizvozvo, pane zvakawanda zvakaoma zvinouya muchirongwa ichi. Ndingati zvechokwadi chakaoma kupfuura [chirongwa] chenguva dzose. Zvinoda basa rakawanda kuti munhu wese aite kuti chirongwa ichi chibudirire."
Zvisinei, maererano naCarpenter, pakati pezvinhu zvikuru mukuoma kwebhiriji, chinoita kuti bhiriji rive nemhedzisiro yaro yese idheki rakakombama. Zvakakodzera here kunetseka kuita izvi? Kazhinji, hongu.
"Ini ndinofunga kuti dhizaini yakanaka inowanzo tanga nekushanda kwayo yozoenderera mberi kune chimwe chinhu," akadaro Carpenter. "Ndizvo chaizvo zvakaitika pabhiriji iri. Ini ndinofunga kuti chinhu chakakosha idheki rakakombama. Panyaya iyi, handifarire bhaa remasiwiti nekuti nzira yese ine makombama uye inokombama. Handidi kungotendeuka kuruboshwe zvakananga ndobva ndatendeuka kuruboshwe zvakananga ndoramba ndichienda mberi.
Bhiriji reBarbara Walker Crossing rakagadzirwa kunze kwenzvimbo yacho, rakakamurwa kuita zvikamu zviviri zvikuru, ndokuzoendeswa nemotokari kunzvimbo yaro pari zvino. Portland Parks Foundation
"Unogadzira sei dheki rakakombama? Zvinobuda pachena kuti truss ine machord matatu inoshanda zvakanaka pakobvu. Unowana chiyero chakanaka chehupamhi hwepakati. Saka, ungaitei netruss ine machord matatu kuti uite kuti ive yakanaka uye Runako, uye wotaura nezvesango nenzira inoita kuti riite sekunge harigone kuva kune imwe nzvimbo? Tanga nekushanda, wobva waenda kune - chii chinonzi izwi? - kuenda kukufungidzira. Kana kubva pakushanda kusvika pakufungidzira. Vamwe vanhu vanogona kuzviita nenzira yakasiyana, asi ndizvo chaizvo zvandinoita."
Carpenter anonyanya kurumbidza vashandi veKPFF nekumupa kurudziro yaaida kuti agadzire mapaipi kunze kwedeki, izvo zvakaita kuti bhiriji rive nechimiro chekunze, chinobva musango. Chirongwa ichi chakatora makore angangoita manomwe kubva pakutanga kusvika pakuvhurwa kukuru, asi Finney akafara kuva nemukana wekuva chikamu charo.
"Zvinofadza kuva nechimwe chinhu chekupa guta rino uye kudada nacho, asi zvakare zvakanaka kugadzirisa dambudziko reinjiniya rakanaka," akadaro Finney.
Sekureva kwePortland Parks Foundation, vanhu vanosvika zviuru makumi masere vanoshandisa zambuko iri gore rega rega, zvichidzivirira matambudziko ekuyambuka chikamu chemugwagwa chinosvika zviuru makumi maviri pazuva.
Nhasi, bhiriji iri rinoenderera mberi nepfungwa yaWalker yekubatanidza vagari vemuPortland nevashanyi kune runako rwenzvimbo dzakapoteredza.
"Tinofanira kupa vanhu vemumaguta mukana wekuona zvakasikwa," Walker (akataurwa neWorld Forestry Center) akamboti. "Kufara nezvezvisikwa kunobva pakuva panze. Hazvigone kudzidzwa muchidimbu. Nekuona zvakasikwa pachedu, vanhu vane chishuwo chekuva vatariri veminda."
Lincoln Brunner mupepeti weThe Tube & Pipe Journal. Uku ndiko kushanda kwake kwechipiri kuTPJ, kwaakashanda semupepeti kwemakore maviri asati abatsira kutanga TheFabricator.com semutariri wekutanga wezvemukati mewebhu weFMA. Mushure mechiitiko ichocho chinopa mubayiro, akapedza makore gumi nemanomwe mubazi rezvekusaita purofiti semutori wenhau wepasi rose uye mutungamiriri wezvekutaurirana. Iye munyori akaburitswa uye akanyora zvakawanda nezvezvinhu zvakasiyana-siyana zveindasitiri yekugadzira simbi.
Tube & Pipe Journal yakava magazini yekutanga yakatsaurirwa kushandira indasitiri yemapombi esimbi muna 1990. Nhasi uno, ichiri magazini yega muNorth America yakatsaurirwa indasitiri iyi uye yave sosi yeruzivo rwakavimbika kune nyanzvi dzemapombi.
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