Lokacin da aka fara ƙirƙirar Barbara Walker Crossing a shekarar 2012, babban aikinta shine ta rage wa masu tafiya a ƙasa da masu gudu a kan Wildwood Trail na Portland wahalar guje wa cunkoson ababen hawa a kan titin West Burnside mai cike da jama'a.
Ya zama shaida ga tsarin gine-gine mai kyau, haɗa amfani da kyau ga al'umma da ke daraja (kuma take buƙata) duka biyun.
An kammala gadar a watan Oktoban 2019 kuma an buɗe ta a wannan watan, kuma gadar ta kasance hanyar tafiya mai tsawon ƙafa 180 wadda aka tsara za ta lanƙwasa kuma ta haɗu da dajin da ke kewaye.
Kamfanin Portland Supreme Steel Company ne ya ƙera shi a wajen wurin, aka raba shi zuwa manyan sassa uku, sannan aka kai shi da manyan motoci zuwa wurin.
Cika buƙatun gani da gine-gine yana nufin amfani da kayan da za su cimma dukkan manufofin aikin na musamman, duka a fannin fasaha da kuma a fannin tsari. Wannan yana nufin amfani da bututu - a wannan yanayin bututun ƙarfe mai girman 3.5″ da 5″.corten (ASTM A847) wanda aka tsara don gine-ginen da ke buƙatar haɗin haɗin walda ko bel. Wasu bututun suna fallasa (wani muhimmin fasalin Corten) kuma wasu an fenti su kore don dacewa da rufin daji.
Ed Carpenter, wani mai zane kuma mai fasaha wanda ya ƙware a manyan gine-ginen gwamnati, ya ce yana da manufofi da dama a zuciyarsa lokacin da yake tsara gadar. Daga cikinsu, ya kamata a haɗa gadar cikin yanayin dajin, wanda ci gaba ne na jin daɗin hanyar da kuma gogewarta, kuma ya kamata ta kasance mai laushi da bayyananne gwargwadon iko.
"Domin ɗaya daga cikin muhimman manufofin zane na shine in sanya gadar ta zama mai laushi da kuma bayyana, ina buƙatar kayan aiki mafi inganci da kuma tsarin gini mafi inganci - don haka, trusses masu sarƙoƙi uku," in ji Carpenter, wanda shi ma mai sha'awar waje ne. .Ina aiki akan babban tsarin hanya na Portland sama da shekaru 40." Kuna iya gina shi da wasu kayayyaki, amma bututun ƙarfe ko bututun shine kawai zaɓin da ya dace.
Daga mahangar gini mai amfani, cimma duk wannan ba abu ne mai sauƙi ba. Stuart Finney, injiniyan gine-gine a ofishin kamfanin injiniya na Portland KPFF kuma tsohon manajan aikin gada, ya ce nasarar walda dukkan abubuwan da aka gyara a mahadar TYK inda dukkan bututun tallafi suka haɗu wataƙila shine mafi wahala. Wani ɓangare na duk ƙoƙarin. Musamman ma, duk kusurwoyi daban-daban da ake buƙata don nau'ikan walda daban-daban, kamar walda da ramuka na fillet, sun haifar da ƙalubale masu tsanani ga ƙungiyar ginin.
"Ainihin kowace haɗin gwiwa ta bambanta," in ji Finney, wanda ya yi aikin wannan aikin tsawon shekaru 20." Dole ne su sa kowace haɗin gwiwa ta zama cikakke ta yadda duk waɗannan bututun za a haɗa su wuri ɗaya, kuma za su iya samun isasshen walda a kusa da dukkan bututun.
Gadar Barbara Walker Crossing mai tafiya a ƙasa ta ratsa titin Burnside mai yawan zirga-zirga a Portland. An fara nuna ta a watan Oktoban 2019. Shane Bliss
"Dole ne a canza walda gaba ɗaya. Walda na iya zama ɗaya daga cikin ɓangarorin da suka fi rikitarwa a masana'antu."
Shahararriyar mai suna Ferry, Barbara Walker (1935-2014), ta kasance ginshiƙin ayyukan kiyaye muhalli na Portland tsawon shekaru, kuma ita ma ta kasance mai ƙarfin hali. Ta taka rawa sosai a ayyukan gwamnati da dama a Portland, ciki har da Marquam Nature Park, Pioneer Courthouse Square da Powell Butte Nature Park. Ta kuma ba da goyon baya ga abin da aka sani da 40-Mile Loop, wanda ya haɗa da Wildwood Trail da Bridge.
Kamar yadda Walker ya tara kimanin dala $500,000 daga jama'a don Pioneer Courthouse Square ($15 ga kowace dutse mai shinge), ƙungiyar agaji ta Portland Parks Foundation ta tara dala miliyan 2.2 daga cikin gudummawar masu zaman kansu kusan 900 don taimakawa wajen samar da kuɗin gadar. Birnin Portland, Portland Parks & Recreation da sauran ƙungiyoyi sun ba da gudummawar sauran kuɗin da ya kai dala miliyan 4.
Carpenter ya ce haɗa muryoyi da muryoyi da yawa a cikin aikin ya zama ƙalubale, amma ya cancanci hakan.
"Ina ganin mafi mahimmancin gogewa ita ce babban haɗin gwiwar al'umma, babban alfahari, da kuma babban haɗin gwiwa - mutane suna biyan kuɗin hakan," in ji Carpenter. "Ba wai kawai daidaikun mutane ba, har ma da birane da gundumomi. Wannan babban aiki ne na haɗin gwiwa."
Finney ya ƙara da cewa shi da tawagarsa, da kuma masana'antun da ke da alhakin kawo zane-zanen zuwa rayuwa, dole ne su shawo kan ƙalubale da yawa a cikin ƙirar 3D da suka yi, kawai saboda duk sarkakiyar haɗin gwiwa da kayan haɗin.
"Muna aiki tare da masu gyaran kayanmu don tabbatar da cewa dukkan samfuran sun yi layi domin kuma, babu wani wuri na kuskure game da yawancin waɗannan haɗin gwiwa saboda sarkakiyar yanayin," in ji Finney. "Tabbas ya fi rikitarwa fiye da yawancin. Gadoji da yawa madaidaiciya ne, har ma waɗanda aka lanƙwasa suna da lanƙwasa, kuma kayan suna da sauƙi.
"Saboda haka, akwai ƙananan sarkakiya da ke tasowa a cikin aikin. Tabbas zan iya cewa ya fi rikitarwa fiye da aikin yau da kullun. Yana buƙatar aiki mai yawa ga kowa don cimma wannan aikin."
Duk da haka, a cewar Carpenter, ɗaya daga cikin muhimman abubuwan da ke cikin sarkakiyar gadar, abin da ya ba gadar tasirinta gabaɗaya shine bene mai lanƙwasa. Shin ya cancanci wahalar yin haka? Galibi, eh.
"Ina tsammanin kyakkyawan tsari yawanci yana farawa da aiki sannan ya koma wani abu makamancin haka," in ji Carpenter. "Wannan shine ainihin abin da ya faru a wannan gadar. Ina tsammanin a gare ni, mafi mahimmanci shine bene mai lanƙwasa. A wannan yanayin, ba na jin daɗi game da sandar alewa saboda duk hanyar tana da lanƙwasa kuma tana lanƙwasa. Kawai ba na son yin kaifi na hagu a kan gadar sannan in yi kaifi na hagu na ci gaba da tafiya.
An ƙera gadar Barbara Walker Crossing mai tafiya a ƙasa daga wurin, an raba ta zuwa manyan sassa biyu, sannan aka kai ta manyan motoci zuwa wurin da take a yanzu. Gidauniyar Portland Parks
"Ta yaya ake yin bene mai lanƙwasa? To, ya zama, ba shakka, truss mai chord uku yana aiki sosai akan lanƙwasa. Kuna samun rabo mai kyau na zurfin-zuwa-tazara. To, me za ku iya yi da truss mai chord uku don ya zama kyakkyawa da kyau, sannan ku koma ga daji ta hanyar da ta sa ya zama kamar ba zai iya kasancewa a wani wuri ba? Fara da aiki, sannan ku matsa zuwa - menene kalmar? - zuwa ga tatsuniya. Ko daga aiki zuwa tunani. Wasu mutane na iya yin hakan ta wata hanyar daban, amma haka nake aiki."
Carpenter ya yaba wa ma'aikatan KPFF musamman saboda ba shi kwarin gwiwa wajen haɓɓaka bututun da ke bayan benen, wanda hakan ya ba gadar yanayi mai kyau, daga dajin. Aikin ya ɗauki kimanin shekaru bakwai daga farko zuwa babban buɗewa, amma Finney ya yi farin ciki da samun damar kasancewa cikin sa.
"Yana da kyau a sami wani abu da za a bayar da shi ga wannan birni kuma a yi alfahari da shi, amma kuma yana da kyau a magance ƙalubalen injiniya mai kyau," in ji Finney.
A cewar Gidauniyar Portland Parks, kimanin masu tafiya a ƙasa 80,000 za su yi amfani da gadar masu tafiya a ƙasa kowace shekara, wanda hakan zai rage wahalhalun ketare wani sashe na titin da ke ganin motoci kusan 20,000 a rana.
A yau, gadar ta ci gaba da hangen nesa na Walker na haɗa mazauna Portland da baƙi da kyawun yanayin ƙasa da ke kewaye.
"Muna buƙatar samar wa mutanen birane damar shiga yanayi," in ji Walker (wanda Cibiyar Gandun Daji ta Duniya ta ambata) a wani lokaci. "Murna game da yanayi yana fitowa ne daga kasancewa a waje. Ba za a iya koyo shi a taƙaice ba. Ta hanyar fuskantar yanayi da idon basira, mutane suna da sha'awar zama masu kula da ƙasa."
Lincoln Brunner editan jaridar The Tube & Pipe ne. Wannan shine karo na biyu da ya yi aiki a TPJ, inda ya yi aiki a matsayin edita na tsawon shekaru biyu kafin ya taimaka wajen ƙaddamar da TheFabricator.com a matsayin manajan abun ciki na farko na FMA. Bayan wannan gogewa mai matuƙar kyau, ya shafe shekaru 17 a ɓangaren agaji a matsayin ɗan jarida na ƙasa da ƙasa kuma darektan sadarwa. Marubuci ne da aka buga kuma ya yi rubutu sosai kan fannoni daban-daban na masana'antar ƙera ƙarfe.
Jaridar Tube & Pipe ta zama mujallar farko da aka keɓe don hidimar masana'antar bututun ƙarfe a shekarar 1990. A yau, ita ce kawai mujallar da aka keɓe ga masana'antar kuma ta zama tushen bayanai mafi aminci ga ƙwararrun bututu.
Yanzu da cikakken damar shiga bugu na dijital na The FABRICATOR, samun damar samun albarkatun masana'antu masu mahimmanci cikin sauƙi.
Bugun dijital na Jaridar The Tube & Pipe yanzu ya zama cikakke, wanda ke ba da damar samun albarkatu masu mahimmanci a masana'antu cikin sauƙi.
Ji daɗin cikakken damar shiga bugu na dijital na STAMPING Journal, wanda ke ba da sabbin ci gaban fasaha, mafi kyawun ayyuka da labaran masana'antu don kasuwar tambarin ƙarfe.
Yanzu da cikakken damar shiga bugu na dijital na The Fabricator en Spanish, samun damar samun albarkatun masana'antu masu mahimmanci cikin sauƙi.