{"id":3065,"date":"2022-03-30T06:57:41","date_gmt":"2022-03-30T06:57:41","guid":{"rendered":"https:\/\/3.212.105.250\/?p=3065"},"modified":"2025-07-26T15:56:42","modified_gmt":"2025-07-26T21:56:42","slug":"5-mielenkiintoista-faktaa-ufer-maadoituksesta","status":"publish","type":"post","link":"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2022\/03\/30\/5-mielenkiintoista-faktaa-ufer-maadoituksesta\/","title":{"rendered":"5 mielenkiintoista faktaa Ufer-maadoituksesta"},"content":{"rendered":"<p>Mukaan\u00a0<a href=\"https:\/\/www.esfi.org\/wp-content\/uploads\/2022\/01\/ESFI-Workplace-Electrical-Injuries-and-Fatalities-Statistics-2011-2020.pdf\">Kansainv\u00e4linen s\u00e4hk\u00f6turvallisuuss\u00e4\u00e4ti\u00f6<\/a>vuodesta 2011 l\u00e4htien on tapahtunut ainakin 976 kuolemantapausta, jotka johtuvat s\u00e4hk\u00f6lle altistumisesta rakennus- ja louhinta-ammateissa. N\u00e4ihin tapaturmiin on useita syit\u00e4. Loppujen lopuksi ne johtuvat kuitenkin yhdest\u00e4 asiasta: s\u00e4hk\u00f6iskuvaarasta.<\/p>\n<p>Onneksi maadoituksella voidaan v\u00e4hent\u00e4\u00e4 s\u00e4hk\u00f6iskun vaaraa, erityisesti sementtikoteloidun <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2024\/07\/18\/maadoituselektrodit-ja-maadoitusjarjestelmat-miten-niita-testataan-ja-miksi-silla-on-merkitysta\/'>elektrodit tai Ufer-maadoitus<\/a>. N\u00e4m\u00e4 mielenkiintoiset faktat Ufer-maadoituksesta (betoniin koteloitu elektrodi) auttavat ymm\u00e4rt\u00e4m\u00e4\u00e4n t\u00e4t\u00e4 k\u00e4yt\u00e4nt\u00f6\u00e4.<\/p>\n<h2>1. Se luotiin toisen maailmansodan aikana<\/h2>\n<p>Ufer-maadoituksen kehitti ensimm\u00e4isen\u00e4 Flagstaffissa, Arizonassa insin\u00f6\u00f6ri Herbert G. Ufer. Ufer toimi Yhdysvaltain armeijan konsulttina tukikohdassa, jota tuolloin kutsuttiin Davis-Monthan Fieldiksi. Tukikohta tunnettiin pommien rakentamisesta ja varastoinnista. T\u00e4m\u00e4n vuoksi, <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2025\/05\/19\/kodin-suojaaminen-sahkomaadoituksen-ja-liitoksen-merkitys\/'>salamasuojaus oli eritt\u00e4in t\u00e4rke\u00e4\u00e4<\/a>.<\/p>\n<p>Alhaisen kosteuden vuoksi alueen maaper\u00e4 ei kuitenkaan ollut suotuisa. Silloin Ufer huomasi, ett\u00e4 betoni oli sopiva vaihtoehto <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2022\/03\/30\/tehokkaan-maadoitusjarjestelman-paakomponentit\/'>tehokas vaihtoehto maadoitukselle<\/a>. Siit\u00e4 l\u00e4htien kaikkia betonipohjaisia maadoituksia on kutsuttu Ufer-maadoituksiksi. H\u00e4n mullisti rauhanajan maadoitusmenetelm\u00e4t, joten h\u00e4nen l\u00f6yt\u00f6ns\u00e4 on yksi mielenkiintoisimmista Ufer-maadoitukseen liittyvist\u00e4 tosiasioista.<\/p>\n<h2>2.It ei ollut ensimm\u00e4inen maadoitustyyppi<\/h2>\n<p>Ihmiset ovat tienneet s\u00e4hk\u00f6iskun vaaroista jo kauan ennen Benjamin Franklinin kuuluisaa salamakokeilua. Ihmiset ovat jo pitk\u00e4\u00e4n k\u00e4ytt\u00e4neet maata s\u00e4hk\u00f6staattisesti varattujen komponenttien purkamiseen, ja todisteet viittaavat sen esiintymiseen jo kuudennella vuosisadalla.<\/p>\n<h2>3.It on tehokas<\/h2>\n<p>Joissakin tapauksissa maa ei ole tehokkain s\u00e4hk\u00f6\u00e4 johtava aine. T\u00e4m\u00e4 p\u00e4tee erityisesti alueilla, joilla maa on kivinen tai erityisen kuiva.<\/p>\n<p>Betoni on tehokkaampi, koska se imee kosteutta, mutta ei menet\u00e4 kosteuttaan, joten se on hyv\u00e4 johdin. N\u00e4in se voi ohjata salaman tehokkaammin maahan.<\/p>\n<h2>4. Se voi s\u00e4\u00e4st\u00e4\u00e4 rahaa<\/h2>\n<p>Tilanteissa, joissa <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2022\/03\/30\/tehokkaan-maadoitusjarjestelman-paakomponentit\/'>maa ei sovellu hyvin maadoitusj\u00e4rjestelmiin,<\/a> urakoitsijoiden on yleens\u00e4 turvauduttava maadoitussauvoihin. Kuivassa ymp\u00e4rist\u00f6ss\u00e4 toimiakseen niiden on kuitenkin usein oltava paljon pidempi\u00e4 kuin perinteisen maadoitussauvan, jonka asentaminen vie enemm\u00e4n aikaa ja rahaa.<\/p>\n<p>Ufer <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2022\/03\/30\/tehokkaan-maadoitusjarjestelman-paakomponentit\/'>maadoitusj\u00e4rjestelm\u00e4t<\/a> ovat yleens\u00e4 paljon yksinkertaisempia ja suhteellisen edullisia asentaa. Lis\u00e4ksi hyvin asennettu <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2025\/01\/20\/onko-sahkotekniikka-vaikeaa\/'>s\u00e4hk\u00f6tekniikka<\/a> j\u00e4rjestelm\u00e4 auttaa v\u00e4ltt\u00e4m\u00e4\u00e4n kalliit ongelmat, kuten vahingot ja loukkaantumiset.<\/p>\n<h2>5. Se on pakollinen<\/h2>\n<p>Jokaisella osavaltiolla on oma <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2023\/08\/11\/miksi-kaupalliset-rakennukset-tarvitsevat-maadoitusjarjestelmien-testausta\/'>maadoitusta koskevat rakennusm\u00e4\u00e4r\u00e4ykset<\/a>. Vaikka kaikki osavaltiot eiv\u00e4t vaadi Ufer <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/2023\/02\/03\/lyhyt-selitys-kahdesta-maadoitusjarjestelmatyypista\/'>maadoitusj\u00e4rjestelm\u00e4<\/a>, mutta niiss\u00e4, joissa niit\u00e4 on, on usein kuivia tai kuivia ymp\u00e4rist\u00f6j\u00e4. N\u00e4iss\u00e4 osavaltioissa osa rakennuksen vaatimustenmukaisuuden varmistamista on Ufer-tarkastus.<\/p>\n<p>Jos etsit\u00a0<a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fi\/services\/sahkoteho\/asuintalojen-tarkastukset\/\">s\u00e4hk\u00f6asentaja<\/a>\u00a0suorittamaan tarvittavat Ufer-tarkastukset, Dreiym Engineeringin ammattilaiset tulevat kiinteist\u00f6llesi suorittamaan tarvittavat tarkastukset ja antamaan neuvoja.<\/p>","protected":false},"excerpt":{"rendered":"<p>According to\u00a0the Electrical Safety Foundation International, at least 976 deaths due to electrical exposure in construction and extraction occupations have occurred since 2011. These injuries have a variety of causes. In the end, however, they come down to one issue: shock hazards. Fortunately, grounding can help decrease shock hazards, especially cement-encased electrodes or Ufer grounding. [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":3450,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_mbp_gutenberg_autopost":false,"_pgmb_is_evergreen":true,"_pgmb_ap_template_id":0,"iawp_total_views":58,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3065","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.6.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"According to the Electrical Safety Foundation International, at least 976 deaths due to electrical exposure in construction and extraction occupations have occ\" \/>\n\t<meta name=\"robots\" content=\"noindex, nofollow, max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Angela Jones\"\/>\n\t<link rel=\"canonical\" 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