{"id":6661,"date":"2025-05-27T11:29:23","date_gmt":"2025-05-27T09:29:23","guid":{"rendered":"https:\/\/www.siphoniker.at\/?p=6661"},"modified":"2025-06-05T12:02:09","modified_gmt":"2025-06-05T10:02:09","slug":"smernice-za-dimenzionisanje-odvodnje-sa-krovova-balkona-i-terasa","status":"publish","type":"post","link":"https:\/\/www.siphoniker.at\/sr\/smernice-za-dimenzionisanje-odvodnje-sa-krovova-balkona-i-terasa\/","title":{"rendered":"Smernice za dimenzionisanje odvodnje sa krovova, balkona i terasa"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6661\" class=\"elementor elementor-6661 elementor-6303\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8105334 e-flex e-con-boxed e-con e-parent\" data-id=\"8105334\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b52cb56 elementor-widget elementor-widget-text-editor\" data-id=\"b52cb56\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Ovaj vodi\u010d pru\u017ea sveobuhvatan uvod u tehni\u010dke zahteve i prora\u010dune za dimenzionisanje sistema odvodnje za krovove, balkone i terase. Razmatraju se razli\u010dita re\u0161enja odvodnje i njihove specifi\u010dne prednosti i nedostaci kako bi se osiguralo pouzdano i standardno uskla\u0111eno projektovanje. Cilj je spre\u010diti o\u0161te\u0107enja od vlage i poplave u\u010dinkovitim re\u0161enjima odvodnje te osigurati dugoro\u010dnu funkcionalnost i sigurnost zgrade.<\/strong><\/p><p>Obilne ki\u0161e, koje mogu dovesti do poplava i o\u0161te\u0107enja zgrada, nazivaju se ekstremnim vremenskim doga\u0111ajima, ali velike koli\u010dine padavina koje se lokalno javljaju u kratkom vremenskom periodu gotovo su postale norma. Za to se \u010desto okrivljuju klimatske promene &#8211; stvarnost sa kojom se moramo pomiriti, svi\u0111alo nam se to ili ne. Zbog toga je jo\u0161 va\u017enije pa\u017eljivo projektovati i izvesti odvodnju atmosferske voda sa zgrade &#8211; posebno za krovove, balkone i terase &#8211; u skladu sa standardima kako bi se izbegla \u0161teta od curenja vode.\u00a0<\/p><p>Dokaz o projektovanju sistema za odvodnju atmosferskih voda u skladu sa standardima zahteva hidrauli\u010dki prora\u010dun specifi\u010dan za projekt i sveobuhvatnu dokumentaciju.<\/p><h3>Osnove odvodnje ki\u0161nice<\/h3><p>Pre nego \u0161to pogledamo konkretan primer interpretacije, bitno je znati neke osnove i razlike.<\/p><p><strong>Od \u010dega se sastoji sistem odvodnje sa krova?<br \/><\/strong>Najva\u017enije komponente krovnog sistema odvodnje su:<\/p><ul><li>Krovni oluci ili krovni slivnici (moraju biti sigurno integrisani u hidroizolaciju)<\/li><li>Odvodne cevi<\/li><li>Sistem za pri\u010dvr\u0161\u0107ivanje cevi<\/li><li>Ako je potrebno, izolacija od kondenzacije odvodnih cevi<\/li><li>Mere za za\u0161titu od po\u017eara, buke i zvuka.<\/li><\/ul><p>\u00a0<\/p><p>Odabrane komponente uvelike zavise o vrste odabranog sistema odvodnje. Sada \u0107emo definisati koji osnovni sistemi odvodnje postoje i kako se razlikuju.<\/p><h3>Diferencijacija prema metodi odvodnje<\/h3><p>U odvodnji oborinskih voda razlikuju se dva osnovna sistema. Oba sistema se zna\u010dajno razlikuju u pogledu rasporeda cevi i dimenzionisanja cevi.<\/p><p><strong>Gravitaciona odvodnja (princip gravitacije)<br \/><\/strong>U konvencionalnoj (klasi\u010dnoj) odvodnji, ki\u0161nica se odvodi gravitacijom putem odvodnih cevi polo\u017eenih pod nagibom. To se naziva i <strong>gravitaciona odvodnja.<\/strong><\/p><p>U procesu planiranja, pretpostavlja se da su horizontalne cevi za odvodnju atmosferskih padavina napunjene vodom do pribli\u017eno 70%, dok su vertikalne cevi popunjene do oko 33%. Ove vrednosti poma\u017eu u pravilnom odre\u0111ivanju potrebnih dimenzija cevi.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-515c24e e-flex e-con-boxed e-con e-parent\" data-id=\"515c24e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1245776 elementor-widget elementor-widget-image\" data-id=\"1245776\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"566\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb01_Schema-Freispiegelentwasserung-1024x724.png\" class=\"attachment-large size-large wp-image-6470\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb01_Schema-Freispiegelentwasserung-1024x724.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb01_Schema-Freispiegelentwasserung-300x212.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb01_Schema-Freispiegelentwasserung-768x543.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb01_Schema-Freispiegelentwasserung-1536x1086.png 1536w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb01_Schema-Freispiegelentwasserung-2048x1448.png 2048w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb01_Schema-Freispiegelentwasserung-1920x1357.png 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 1: \u0160ema gravitacione odvodnje<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2974fd8 e-flex e-con-boxed e-con e-parent\" data-id=\"2974fd8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-690c02e elementor-widget elementor-widget-spacer\" data-id=\"690c02e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5524aaa elementor-widget elementor-widget-text-editor\" data-id=\"5524aaa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Vakumska \/ podpritisna odvodnja (princip usisavanja)<br \/><\/strong>Nasuprot tome, <strong>vakumska\/podpritisna ili sifonska krovna odvodnja<\/strong> radi prema principu potpunog punjenja odvodnih cevi. Ki\u0161nica se prakti\u010dno usisava sa krova. Kod malih koli\u010dina padavina, usisni u\u010dinak se javlja samo sporadi\u010dno ili se uop\u0161te ne javlja, tako da se prednosti ovog sistema u potpunosti ostvaruju tek kada ima dovoljna koli\u010dina padavina. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f669c28 e-flex e-con-boxed e-con e-parent\" data-id=\"f669c28\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8c8ee3d elementor-widget elementor-widget-image\" data-id=\"8c8ee3d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"566\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb02_Schema-Unterdruckentwasserung-1024x724.png\" class=\"attachment-large size-large wp-image-6481\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb02_Schema-Unterdruckentwasserung-1024x724.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb02_Schema-Unterdruckentwasserung-300x212.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb02_Schema-Unterdruckentwasserung-768x543.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb02_Schema-Unterdruckentwasserung-1536x1086.png 1536w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb02_Schema-Unterdruckentwasserung-2048x1448.png 2048w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb02_Schema-Unterdruckentwasserung-1920x1357.png 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 2: \u0160ema podpritisne odvodnje<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a79ac65 e-flex e-con-boxed e-con e-parent\" data-id=\"a79ac65\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ba021bd elementor-widget elementor-widget-text-editor\" data-id=\"ba021bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Kada se koji sistem koristi?<\/h3><p>Danas se velike krovne povr\u0161ine \u0161irokog raspona po\u017eeljno odvodnjavaju kori\u0161\u0107enjem principa negativnog pritiska, jer ovaj sistem zahteva manje materijala i rada. Zahvaljuju\u0107i polaganju cevi bez nagiba ispod krovne konstrukcije, \u0161to je dozvoljeno u ovim sistemima, odvodnja negativnim pritiskom nudi re\u0161enje za u\u0161tedu prostora, posebno u skladi\u0161tima sa visokim regalima. Projektovanje i prora\u010dun takvih sistema sprovodi gotovo isklju\u010divo odgovaraju\u0107i dobavlja\u010d sistema.<\/p><p>Nisu sve krovne povr\u0161ine prikladne za odvodnju principom negativnog pritiska, kao npr. krovne terase, balkoni ili krovovi stambenih zgrada. U odre\u0111enim slu\u010dajevima, konvencionalna odvodnja mo\u017ee biti bolji izbor i za skladi\u0161ta ili proizvodne hale.<\/p><p>Koji su argumenti u korist konvencionalne\/gravitacione odvodnje:<\/p><ul><li>Projektovanje sistema mo\u017ee sprovesti sam projektant u jednostavnim koracima koriste\u0107i norme EN1253-2 i EN12056-3. Nema zavisnosti o dobavlja\u010du sistema!<\/li><li>Kod krovnih konstrukcija sa niskim koeficijentom oticanja, poput zelenih krovova, ki\u0161nica se zadr\u017eava i ispu\u0161ta u odvod u manjim koli\u010dinama, tako da se ne mo\u017ee posti\u0107i potpuno punjenje cevi. U ovom slu\u010daju, sistem sa cevima polo\u017eenim pod nagibom ima vi\u0161e smisla<\/li><li>Kod male koli\u010dine vode i horizontalnog rasporeda cevi bez nagiba (vakumska odvodnja), pove\u0107ava se rizik od za\u010depljenja jer se gubi u\u010dinak samo\u010di\u0161\u0107enja zbog nepotpunog punjenja cevi. I ovde konvencionalna odvodnja ima vi\u0161e smisla<\/li><\/ul><p>\u00a0<\/p><p>Koji od ta dva sistema na kraju ima vi\u0161e smisla sa ekonomskog i tehni\u010dkog gledi\u0161ta trebao bi projektant uvek da proveri i odredi zavisno od slu\u010daja do slu\u010daja.<\/p><p>Budu\u0107i da projektovanje odvodnje sa negativnim pritiskom uvek zavisi od sistema ili proizvo\u0111a\u010da, te se stoga ne mogu dati generalizovane tvrdnje o projektovanju i izvedbi, to se ne\u0107e razmatrati u ovim smernicama. U nastavku \u0107e se detaljno analizirati projektovanje gravitacione odvodnje.<\/p><p>Me\u0111utim, za gravitacionu odvodnju potrebno je napraviti jo\u0161 dve podele. Jedna podela prema rasporedu cevovoda i jedna prema na\u010dinu spajanja.\u00a0<\/p><h3>Podela prema rasporedu cev<\/h3><p>Kod konvencionalne gravitacione odvodnje, dodatna, va\u017ena karakteristika je \u0161ema rasporeda cevi.<\/p><p><strong>Pojedina\u010dni priklju\u010dak cevi, zatvoreni sistem<br \/><\/strong>Svaki krovni odvod je zasebno spojen na odvodnu cev iste dimenzije bez prekida.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-69333b3 e-flex e-con-boxed e-con e-parent\" data-id=\"69333b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d6b1699 elementor-widget elementor-widget-image\" data-id=\"d6b1699\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"566\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb03_Schema-geschlossenes-System-1024x724.png\" class=\"attachment-large size-large wp-image-6489\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb03_Schema-geschlossenes-System-1024x724.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb03_Schema-geschlossenes-System-300x212.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb03_Schema-geschlossenes-System-768x543.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb03_Schema-geschlossenes-System-1536x1086.png 1536w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb03_Schema-geschlossenes-System-2048x1448.png 2048w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb03_Schema-geschlossenes-System-1920x1357.png 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 3: \u0160ema zatvorenog sistema (pojedina\u010dne cevi) <\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b3ecccd e-flex e-con-boxed e-con e-parent\" data-id=\"b3ecccd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f3013d1 elementor-widget elementor-widget-text-editor\" data-id=\"f3013d1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Zatvoreni sistem zna\u010di da je krovni odvod \u010dvrsto spojen sa odvodnom cevi kao \u0161to je prikazano na slici 4. Krovni odvod i cev moraju biti istih dimenzija celom du\u017einom.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3bd3c5d e-flex e-con-boxed e-con e-parent\" data-id=\"3bd3c5d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ebdcc9f elementor-widget elementor-widget-image\" data-id=\"ebdcc9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"566\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb04_Detail-geschlossenes-System_korr-1024x724.png\" class=\"attachment-large size-large wp-image-7122\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb04_Detail-geschlossenes-System_korr-1024x724.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb04_Detail-geschlossenes-System_korr-300x212.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb04_Detail-geschlossenes-System_korr-768x543.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb04_Detail-geschlossenes-System_korr-1536x1086.png 1536w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb04_Detail-geschlossenes-System_korr-2048x1448.png 2048w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb04_Detail-geschlossenes-System_korr-1920x1357.png 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 4 Detalj: Zatvoreni sustav<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7bb5e3a e-flex e-con-boxed e-con e-parent\" data-id=\"7bb5e3a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e6b711b elementor-widget elementor-widget-spacer\" data-id=\"e6b711b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a272477 elementor-widget elementor-widget-text-editor\" data-id=\"a272477\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Zbirni priklju\u010dni cevovod, otvoreni sistem<br \/><\/strong>Nekoliko krovnih odvoda spojeno je na glavnu cev pomo\u0107u sabirne i olu\u010dne cevi.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-792cfca e-flex e-con-boxed e-con e-parent\" data-id=\"792cfca\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-95de8f2 elementor-widget elementor-widget-image\" data-id=\"95de8f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"566\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb05_Schema-offenes-System-mit-Kanal-1024x724.png\" class=\"attachment-large size-large wp-image-6505\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb05_Schema-offenes-System-mit-Kanal-1024x724.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb05_Schema-offenes-System-mit-Kanal-300x212.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb05_Schema-offenes-System-mit-Kanal-768x543.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb05_Schema-offenes-System-mit-Kanal-1536x1086.png 1536w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb05_Schema-offenes-System-mit-Kanal-2048x1448.png 2048w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb05_Schema-offenes-System-mit-Kanal-1920x1357.png 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 5: Otvoreni sistem, zbirni cevovod <\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-eb6eb57 e-flex e-con-boxed e-con e-parent\" data-id=\"eb6eb57\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e0e2058 elementor-widget elementor-widget-spacer\" data-id=\"e0e2058\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b1066bd elementor-widget elementor-widget-text-editor\" data-id=\"b1066bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Otvoreni sistem zna\u010di da je krovni odvod (kao na slici 6) spojen na horizontalnu cev i slobodno te\u010de u ve\u0107u dimenzionisanu odvodnu cev koja je otvorena sa obe strane.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2ebdc33 e-flex e-con-boxed e-con e-parent\" data-id=\"2ebdc33\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a56e7d3 elementor-widget elementor-widget-image\" data-id=\"a56e7d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"566\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb06_Detail-offenes-System-1024x724.png\" class=\"attachment-large size-large wp-image-6513\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb06_Detail-offenes-System-1024x724.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb06_Detail-offenes-System-300x212.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb06_Detail-offenes-System-768x543.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb06_Detail-offenes-System-1536x1086.png 1536w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb06_Detail-offenes-System-2048x1448.png 2048w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb06_Detail-offenes-System-1920x1357.png 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 6 Detalj: Otvoreni sistem<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-aef6e9b e-flex e-con-boxed e-con e-parent\" data-id=\"aef6e9b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6841185 elementor-widget elementor-widget-text-editor\" data-id=\"6841185\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>U na\u010delu se mo\u017ee pretpostaviti da se u zatvorenim sistemima posti\u017ee ve\u0107i kapacitet odvodnje. To je zbog toga \u0161to se usisni u\u010dinak poja\u010dava spajanjem cevi iste dimenzije u celom sistemu.<\/p><h3>Smernice za projektovanje i izvo\u0111enje<\/h3><p>Pre po\u010detka dimenzionisanja i projektovanja, potrebno je utvrditi i specificirati neke osnovne informacije i podatke o gra\u0111evinskom projektu.<\/p><p>To uklju\u010duje:<\/p><ul><li>Detaljni gra\u0111evinski planovi sa podru\u010djima koja \u0107e se odvodnjavati<\/li><li>Krovna konstrukcija, hidroizolacija i kori\u0161teni materijali<\/li><li>Dozvoljena stati\u010dka optere\u0107enja za odre\u0111ivanje maksimalne dozvoljene visine akumulacije vode<\/li><li>Adresa ili po\u0161tanski broj gra\u0111evinskog projekta (va\u017eno za prora\u010dun intenziteta padavina)<\/li><li>Raspored cevi<ul><li>Pojedina\u010dni ili zbirni priklju\u010dni cevovodi<\/li><li>Zatvoreni ili otvoreni sistem<\/li><\/ul><\/li><\/ul><p>\u00a0<\/p><p>Na temelju ovih podataka potrebno je odrediti i izra\u010dunati koli\u010dinu padavina, koeficijent oticanja i kapacitet odvodnje kori\u0161\u0107enih krovnih odvoda.<\/p><p><strong>Prora\u010dun koli\u010dine padavina (r)<br \/><\/strong>Prvi korak u dimenzionisanju odvodnog sistema je odre\u0111ivanje prora\u010dunske koli\u010dine padavina (r). To je osnova za svaki odvodni sistem.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-917cdc2 e-flex e-con-boxed e-con e-parent\" data-id=\"917cdc2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fb06dae elementor-widget elementor-widget-image\" data-id=\"fb06dae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"384\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb07-1024x491.png\" class=\"attachment-large size-large wp-image-6521\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb07-1024x491.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb07-300x144.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb07-768x368.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb07.png 1500w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 7: Austrijska mre\u017ea za merenje padavina<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c040157 e-flex e-con-boxed e-con e-parent\" data-id=\"c040157\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d0b084d elementor-widget elementor-widget-spacer\" data-id=\"d0b084d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec5f3fd elementor-widget elementor-widget-text-editor\" data-id=\"ec5f3fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Krovna odvodnja treba biti dimenzionisana za najintenzivniji 5-minutni doga\u0111aj padavina u periodu od 5 godina. U pravilu, projektovana koli\u010dina padavina za odgovaraju\u0107u lokaciju treba se preuzeti iz skupova podataka Saveznog ministarstva poljoprivrede, \u0161umarstva, ekologije i vodoprivrede (<a href=\"https:\/\/ehyd.gv.at\/\" target=\"_blank\" rel=\"noopener\">Bundesministerium f\u00fcr Land- und Forstwirtschaft, Umwelt und Wasserwirtschaft<\/a>), a zatim pretvoriti u projektovanu koli\u010dinu padavina u l\/(s \u2022 ha).<\/p><p>Minimalna projektovana koli\u010dina oborina za krovne povr\u0161ine i povr\u0161ine nekretnina postavljena je na 300 l\/(s \u2022 ha). Krovna odvodnja dimenzioni\u0161e se u skladu sa \u00d6NORM EN 12056-3:2000, odeljak 4.1. Ove vrednosti mogu se razlikovati zavisno od regiona i dr\u017eave.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6598841 e-flex e-con-boxed e-con e-parent\" data-id=\"6598841\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-821a61a elementor-widget elementor-widget-image\" data-id=\"821a61a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"698\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_1_EN-1024x894.jpg\" class=\"attachment-large size-large wp-image-7206\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_1_EN-1024x894.jpg 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_1_EN-300x262.jpg 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_1_EN-768x671.jpg 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_1_EN-1536x1341.jpg 1536w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_1_EN-2048x1788.jpg 2048w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_1_EN-1920x1677.jpg 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 8: Koli\u010dina padavina od 5 minuta za petogodi\u0161nji ki\u0161ni period u Fischamend (Austrija).<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9fb58d0 e-flex e-con-boxed e-con e-parent\" data-id=\"9fb58d0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b52ce29 elementor-widget elementor-widget-spacer\" data-id=\"b52ce29\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-032789c elementor-widget elementor-widget-text-editor\" data-id=\"032789c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Koeficijent odvodnje (C)<br \/><\/strong>Zatim se mora odrediti koeficijent oticanja C. Koeficijent oticanja je odnos izme\u0111u koli\u010dine ki\u0161e koja trenutno pada na podru\u010dje odvodnje i koli\u010dine koja se stvarno dovodi u odvod. Kvalitet povr\u0161ine krova ovdje igra zna\u010dajnu ulogu. Na primer, zeleni krov sa koeficijentom oticanja od 0,3 smanjuje oticanje ki\u0161nice za oko dve trec\u0301ine.<\/p><p><strong>Prema \u00d6NORM B 2501<\/strong> va\u017ee slede\u0107e vrednosti:<\/p><ul><li>C = 1,0 za limene krovove, krovove sa crepom, zatvorene betonske povr\u0161ine, krovove od folije, poplo\u010dane povr\u0161ine sa fugovanim spojevima, zatvorene krovove bez balasta<\/li><li>C = 0,8 za \u0161ljun\u010dane krovove, \u0161ljun\u010dane staze, poplo\u010dane povr\u0161ine bez fugovanja i ekstenzivne zelene krovove sa debljinom sloja ne ve\u0107om od 8 cm<\/li><li>C = 0,5 za smanjeno ekstenzivno ozelenjavanje sa debljinom sloja ve\u0107om od 8 cm<\/li><li>C = 0,3 za ekstenzivno i intenzivno ozelenjavanje sa debljinom sloja od 10 cm ili vi\u0161e<\/li><li>C = 0,1 za intenzivno ozelenjavanje sa debljinom sloja od 25 cm ili vi\u0161e<\/li><\/ul><p>\u00a0<\/p><p><strong>Odvodnja ki\u0161nice (Q)<br \/><\/strong>Koli\u010dina ki\u0161nice <strong>Q<\/strong> izra\u010dunava se iz veli\u010dine povr\u0161ine koja se odvodnjava <strong>A<\/strong>, relevantne koli\u010dine oborina (<strong>r<\/strong>) i koeficijenta oticanja <strong>C<\/strong>, a izra\u010dunava se pomo\u0107u slede\u0107e formule:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-94a3c48 e-flex e-con-boxed e-con e-parent\" data-id=\"94a3c48\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8d029a5 elementor-widget elementor-widget-image\" data-id=\"8d029a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"153\" height=\"49\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_0.png\" class=\"attachment-large size-large wp-image-6354\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_0.png 153w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_0-150x49.png 150w\" sizes=\"(max-width: 153px) 100vw, 153px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4cbaeb7 e-flex e-con-boxed e-con e-parent\" data-id=\"4cbaeb7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b850870 elementor-widget elementor-widget-spacer\" data-id=\"b850870\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d16e9d6 elementor-widget elementor-widget-text-editor\" data-id=\"d16e9d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Gde je:<\/p><ul><li>Q \u2013 koli\u010dina ki\u0161nice koja se formira na krovu u litrama u sekundi (l\/s)<\/li><li>r &#8211; prora\u010dunska koli\u010dina padavina u litrama po sekundi i hektaru (l\/s\u00b7ha)<\/li><li>A &#8211; efektivna povr\u0161ina krova u kvadratnim metrima (m\u00b2)<\/li><li>C &#8211; koeficijent oticanja, koji uzima u obzir zadr\u017eavanje ili usporavanje uzrokovano povr\u0161inom krova<\/li><\/ul><p>\u00a0<\/p><p>Ovaj prora\u010dun pokazuje koli\u010dinu vode koju odvodni sistem mora pouzdano odvoditi u sekundi kako bi se osigurala odvodnja u skladu sa standardima.<\/p><p><strong>Kapacitet odvodnje krovnih slivnika<\/strong> <br \/>Prema normi EN1253-2, proizvo\u0111a\u010di krovnih i parapetnih odvoda u obavezi su da prika\u017eu vrednosti odvodnje u tablici ili dijagramu, zavisno od visine vode iznad hidroizolacione prirubnice.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-658887e e-flex e-con-boxed e-con e-parent\" data-id=\"658887e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6d55517 elementor-widget elementor-widget-image\" data-id=\"6d55517\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"242\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb09_SRB-1024x310.jpg\" class=\"attachment-large size-large wp-image-6827\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb09_SRB-1024x310.jpg 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb09_SRB-300x91.jpg 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb09_SRB-768x233.jpg 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb09_SRB-1536x465.jpg 1536w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb09_SRB-2048x621.jpg 2048w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb09_SRB-1920x582.jpg 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 9: Tablica kapaciteta odvodnje ispitanih prema EN 1253 ta\u010dki 5.5.2.1 na 3 m odvodnoj cevi (tj. zatvoreni sistem) <\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-84fed5c e-flex e-con-boxed e-con e-parent\" data-id=\"84fed5c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6e600b5 elementor-widget elementor-widget-spacer\" data-id=\"6e600b5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de62ccc elementor-widget elementor-widget-text-editor\" data-id=\"de62ccc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Kapacitet odvodnje zavisi od toga je li kori\u0161teni sistem otvorenog ili zatvorenog tipa. Stoga je va\u017eno pitati proizvo\u0111a\u010da prema kojim se kriterijumima ispituju performanse odgovaraju\u0107eg slivnika.<\/p><h3>Primeri prora\u010duna<\/h3><p>Nakon \u0161to smo objasnili osnovna na\u010dela odvodnje sa krova, sada prelazimo na prakti\u010dnu primenu dimenzionisanja odvodnih sistema. Zavisno od vrste sistema \u2013 otvoreni ili zatvoreni, pojedina\u010dni ili zbirni priklju\u010dak \u2013 pristup prora\u010dunu se razlikuje.<\/p><p>Zatvoreni sistem sa zbirnim priklju\u010dnim cevovodima odgovara principu vakumske odvodnje (podpritiska). Sa obzirom da ovo sistem zavisi od specifikacija proizvo\u0111a\u010da za vakumski sistema odvodnje, ne\u0107emo dalje diskutovati u ovom vodi\u010du o ovom tipu sistemu.<\/p><p>U nastavku \u0107e biti primer prora\u010duna krova sa dva razli\u010dita sistema: jedan kao zatvoreni sistem sa pojedina\u010dnim priklju\u010dnim cevima i jedan kao otvoreni sistem sa zbirnim priklju\u010dnim cevima.<\/p><p><strong>Po\u010detni podaci<br \/><\/strong>U naselju Fischamend u okrugu Bruck an der Leitha (Austrija) gradi se objekat sa ravnim krovom pokriven sa folijom, povr\u0161ine 800 m\u00b2, sa jednosmernim nagibom.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5d8eebe e-flex e-con-boxed e-con e-parent\" data-id=\"5d8eebe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3f34a74 elementor-widget elementor-widget-image\" data-id=\"3f34a74\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/elementor\/thumbs\/Abb10_Dachflache-mod-r64oipoz97m7ea9jkjsm1vbwdose8iq0659oolm0ao.jpg\" title=\"Abb10_Dachfl\u00e4che mod\" alt=\"Abbildung 10: Flachdach mit in einer Richtung ausgelegtem Gef\u00e4lle\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 10: Ravni krov sa nagibom projektovanim u jednom smeru<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bf32117 e-flex e-con-boxed e-con e-parent\" data-id=\"bf32117\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e22fe7a elementor-widget elementor-widget-spacer\" data-id=\"e22fe7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc8929b elementor-widget elementor-widget-text-editor\" data-id=\"fc8929b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Bez obzira na odabrani sistem, povr\u0161ina krova <strong>A<\/strong>, prora\u010dunska koli\u010dina padavina <strong>r<\/strong>, koeficijent oticanja <strong>C<\/strong> i koli\u010dina ki\u0161nice koja se formira na krovu <strong>Q<\/strong> sada se mo\u017ee odrediti iz ovih podataka:<\/p><p><strong><em>A<\/em><\/strong> = Povr\u0161ina krova 800 m\u00b2<\/p><p>Prora\u010dunska koli\u010dina padavina (r) u najja\u010di 5-minutni intezitet padavina u periodu od pet godina preuzima se iz <a href=\"https:\/\/ehyd.gv.at\/\" target=\"_blank\" rel=\"noopener\">hidrografske online karte<\/a> kako je gore opisano (vidi sliku 8) i pretvara se u litre u sekundi:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-92c601b e-flex e-con-boxed e-con e-parent\" data-id=\"92c601b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a5b9085 elementor-widget elementor-widget-image\" data-id=\"a5b9085\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"436\" height=\"67\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_1_korr3.jpg\" class=\"attachment-large size-large wp-image-7321\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_1_korr3.jpg 436w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_1_korr3-300x46.jpg 300w\" sizes=\"(max-width: 436px) 100vw, 436px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-40d453c e-flex e-con-boxed e-con e-parent\" data-id=\"40d453c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-890a628 elementor-widget elementor-widget-text-editor\" data-id=\"890a628\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Koeficijent oticanja <strong>C<\/strong> za krovove sa zavr\u0161nim slojem sa folijom je 1:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8d9e11a e-flex e-con-boxed e-con e-parent\" data-id=\"8d9e11a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9a0415c elementor-widget elementor-widget-image\" data-id=\"9a0415c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"93\" height=\"48\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_2.png\" class=\"attachment-large size-large wp-image-6318\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-04918fe e-flex e-con-boxed e-con e-parent\" data-id=\"04918fe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3b2c4ae elementor-widget elementor-widget-text-editor\" data-id=\"3b2c4ae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Koli\u010dina ki\u0161nice koju je potrebo dovesti <strong>Q<\/strong> se izra\u010dunava:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1549b8a e-flex e-con-boxed e-con e-parent\" data-id=\"1549b8a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9c1d3b4 elementor-widget elementor-widget-image\" data-id=\"9c1d3b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"114\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_3_korr.jpg\" class=\"attachment-large size-large wp-image-7018\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_3_korr.jpg 576w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Formel_3_korr-300x59.jpg 300w\" sizes=\"(max-width: 576px) 100vw, 576px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fa390d5 e-flex e-con-boxed e-con e-parent\" data-id=\"fa390d5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-35ab94d elementor-widget elementor-widget-text-editor\" data-id=\"35ab94d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Raspored za zatvoreni sistem (pojedina\u010dne cevi)<\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-38fd1f3 e-flex e-con-boxed e-con e-parent\" data-id=\"38fd1f3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a4599e6 elementor-widget elementor-widget-image\" data-id=\"a4599e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"531\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb11_Geschlossenes-System_korr.png\" class=\"attachment-large size-large wp-image-7354\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb11_Geschlossenes-System_korr.png 983w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb11_Geschlossenes-System_korr-300x199.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb11_Geschlossenes-System_korr-768x510.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 11: \u0160ema zatvorenog sistema uklj. dimenzionisane podatke<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-93fe6a5 e-flex e-con-boxed e-con e-parent\" data-id=\"93fe6a5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a0fa189 elementor-widget elementor-widget-spacer\" data-id=\"a0fa189\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c1993d3 elementor-widget elementor-widget-text-editor\" data-id=\"c1993d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Nakon \u0161to su odre\u0111eni proizvod i potrebna dodatna oprema, vrednosti kapaciteta odvodnje slivnika dobijeni od proizvo\u0111a\u010da koriste se za odabir odgovaraju\u0107ih komponenti.<\/p><p>Za ovaj primer, potreban je protok od 32,0 l\/s. Zbog toga su odabrana tri krovna slivnika DN110 s kapacitetom od 10,7 l\/s svaki i visinom akumulacije vode od 35 mm (prema tablici odvoda proizvo\u0111a\u010da na slici 9).<\/p><p>Dimenzija krovnog slivnika odabira se prema normi EN 1253, pri \u010demu se za dimenzije DN75 i DN110 uzimaju u obzir vrednosti sa visinom akumulacije od 35 mm. Za dimenzije DN125 i DN160, me\u0111utim, koristi se vrednost sa visinom akumulacije od 45 mm.<\/p><p>Ukupni kapacitet ova tri odabrana krovna slivnika DN110 iznosi 32,1 l\/s, \u0161to prema\u0161uje potrebnu vrednost od 32,0 l\/s i samim tim zadovoljava potrebni kapacitet za odvodnju ki\u0161nice sa ovog krova.<\/p><p>Svaki krovni odvod je pojedina\u010dno spojen na odvodnu cev sa kontinuiranom dimenzijom cevi DN110.<\/p><p>Napomena: Potrebno je prilo\u017eiti \u0161ematski dijagram cevovoda sa odgovaraju\u0107im dimenzijama.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e851fcc e-flex e-con-boxed e-con e-parent\" data-id=\"e851fcc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-07f15cc elementor-widget elementor-widget-text-editor\" data-id=\"07f15cc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Raspored za otvorene sisteme<\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d49d420 e-flex e-con-boxed e-con e-parent\" data-id=\"d49d420\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-82cc874 elementor-widget elementor-widget-image\" data-id=\"82cc874\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"589\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb12_Offenes-System_korr-1024x754.png\" class=\"attachment-large size-large wp-image-7362\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb12_Offenes-System_korr-1024x754.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb12_Offenes-System_korr-300x221.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb12_Offenes-System_korr-768x565.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb12_Offenes-System_korr.png 1331w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 12: \u0161ema otvorenog sistema uklj. dimenzionisane podatke<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-49c33d1 e-flex e-con-boxed e-con e-parent\" data-id=\"49c33d1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3ffad41 elementor-widget elementor-widget-spacer\" data-id=\"3ffad41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-757419f elementor-widget elementor-widget-text-editor\" data-id=\"757419f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Za otvorene sisteme<\/strong>, specifikacije kapaciteta slivnika dobijene od proizvo\u0111a\u010da krovnog slivnika nisu relevantne za projektovanje. Umesto toga, moraju se koristiti <strong>tablice odvodnje<\/strong> prema <strong>EN 12056-3<\/strong> za horizontalne podzemne i sabirne cevi (vidi sliku 13) te za vertikalne odvodne cevi (vidi sliku 14).<\/p><p>Projektovanje se zapo\u010dinje sa potrebnim <strong>kapacitetom odvodnje od 32,0 l\/s<\/strong>. Dva su faktora klju\u010dna za odre\u0111ivanje potrebnog broja krovnih odvoda:<\/p><ul><li>Nagib horizontalne cevi \u2013 obi\u010dno oko <strong>1,5%<\/strong><\/li><li>Dimenzija odvodne cevi \u2013 ve\u0107i promer omogu\u0107uju ve\u0107e protoke<\/li><\/ul><p>\u00a0<\/p><p>Budu\u0107i da je nagib u ve\u0107ini slu\u010dajeva unapred odre\u0111en, broj odvoda i promer cevi ostaju varijabilni. Tablica prikazuje slede\u0107e mogu\u0107nosti za na\u0161 primer:<\/p><ul><li>Cevi DN100 \u2192 7 odvoda (5,1 l\/s po odvodu)<\/li><li>Cevi DN125 \u2192 4 odvoda (8,3 l\/s po odvodu)<\/li><li>Cevi DN150 \u2192 2 odvoda (15,7 l\/s po odvodu)<\/li><\/ul><p>\u00a0<\/p><p>U praksi se varijanta sa <strong>4 odvoda i cevima DN125<\/strong> pokazuje posebno prakti\u010dnom. Me\u0111utim, <strong>kona\u010dna odluka je na projektantu<\/strong>, koji odabira optimalno re\u0161enje zavisno od strukturnih uslova, geometrije krova i ekonomskih aspekta.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f961ec9 e-flex e-con-boxed e-con e-parent\" data-id=\"f961ec9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b082a4c elementor-widget elementor-widget-image\" data-id=\"b082a4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"635\" height=\"273\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_3_EN.png\" class=\"attachment-full size-full wp-image-6586\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_3_EN.png 635w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_3_EN-300x129.png 300w\" sizes=\"(max-width: 635px) 100vw, 635px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 13: Kapacitet odvodnje horizontalnih sabirnih i podzemnih cevi (EN12056-3) <\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-aeb47ac e-flex e-con-boxed e-con e-parent\" data-id=\"aeb47ac\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9a2df37 elementor-widget elementor-widget-spacer\" data-id=\"9a2df37\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe546ec elementor-widget elementor-widget-text-editor\" data-id=\"fe546ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Za dimenzionisanje vertikalne odvodne cevi za atmosferske vode mora se koristiti visina punjenja cevi od 0,33 u skladu sa EN 12056-3, osim ako nacionalni ili regionalni propisi ne propisuju druga\u010dije vrednosti (vidi sliku 14). Projektovanje po\u010dinje sa krovnim odvodom koji je najudaljeniji od odvodne vertikale.\u00a0<\/p><p>Primenjuje se slede\u0107e:<\/p><p><strong>Pojedina\u010dne priklju\u010dne cevi<\/strong> moraju uvek zadr\u017eati prethodno odre\u0111eni promer.<\/p><ul><li>Primer: Ako je, kao \u0161to je gore opisano, odlu\u010deno koristiti \u010detri odvoda sa DN125, sve pojedina\u010dne priklju\u010dne cevi tako\u0111e moraju biti DN125.<\/li><\/ul><p>\u00a0<\/p><p><strong>Horizontalne zbirne priklju\u010dne cevi<\/strong> moraju primiti celi volumen vode priklju\u010denih krovnih odvoda.<\/p><ul><li>Kao rezultat toga, promer cevi se obi\u010dno pove\u0107ava u smeru protoka.<\/li><li>Primer (vidi sliku 12):<ul><li>Izme\u0111u prvog i drugog odvoda, zbirna priklju\u010dna cev i dalje mo\u017ee biti projektovana kao DN125<\/li><li>Priklju\u010denjem drugog odvoda potrebno je pove\u0107anje cevi na DN150<\/li><li>Priklju\u010denjem tre\u0107eg odvoda potrebno je pove\u0107anje cevi na DN200<\/li><\/ul><\/li><\/ul><p>\u00a0<\/p><p>Za dimenzionisanje <strong>vertikalne odvodne cevi<\/strong> za atmosferske vode mora se koristiti visina punjenja od 0,33 u skladu sa EN 12056-3, osim ako nacionalni ili regionalni propisi ne propisuju druga\u010diju vrednost (vidi sliku 14).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a768df5 e-flex e-con-boxed e-con e-parent\" data-id=\"a768df5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-49f2a4f elementor-widget elementor-widget-image\" data-id=\"49f2a4f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"413\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_4_EN-1024x528.png\" class=\"attachment-large size-large wp-image-6594\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_4_EN-1024x528.png 1024w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_4_EN-300x155.png 300w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_4_EN-768x396.png 768w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Tabelle_4_EN.png 1080w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 14: Kapacitet odvodnje vertikalnih cevi za atmosferske vode (EN12056-3)<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a915a3e e-flex e-con-boxed e-con e-parent\" data-id=\"a915a3e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-31486d3 elementor-widget elementor-widget-spacer\" data-id=\"31486d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-56631fc elementor-widget elementor-widget-text-editor\" data-id=\"56631fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u010cak i ako bi tablica iz EN 12056-3 (vidi sliku 14) ovde dopustila manji promer cevi, promer horizontalne sabirne cevi ostaje odlu\u010duju\u0107i. To zna\u010di da odvodna vertikalna cev mora imati barem promer priklju\u010dene horizontalne sabirne cevi. Nije dopu\u0161teno smanjenje promera cevi u smeru protoka. Za na\u0161 primer, to zna\u010di promer cevi od DN200 za odvodnu cev.<\/p><p>Ovaj postupak osigurava da sistem ostane hidrauli\u010dki efikasan i da se izbegnu kvarovi.<br \/>Dimenzije cevi pojedina\u010dnih delova prikazanih na dijagramu cevovoda (slika 12) odre\u0111ene su pomo\u0107u slike 13 i slike 14.<\/p><p>Podzemne cevi polo\u017eene pod zemljom ili ispod temeljne plo\u010de tako\u0111e moraju biti projektovane prema slici 13.<\/p><h2>Otvoreni ili zatvoreni sistem \u2013 koji treba koristiti?<\/h2><p>Koji \u0107e se sistem na kraju koristiti, mora odlu\u010diti projektant ili arhitekt za svaki slu\u010daj posebno, uzimaju\u0107i u obzir slede\u0107e aspekte:<\/p><table><tbody><tr><td width=\"302\"><p><strong>Otvoreni sistem<\/strong> (zbirni cevovod)<\/p><\/td><td width=\"302\"><p><strong>Zatvoreni sistem<\/strong> (pojedina\u010dne cevi)<\/p><\/td><\/tr><tr><td width=\"302\"><p><strong>Prednosti:<\/strong><\/p><ul><li>Manji tro\u0161kovi materijala i rada.<\/li><li>Za polaganje podzemnih cevi potrebno je manje gra\u0111evinskih radova jer je manje odvodnih cevi<\/li><\/ul><p>\u00a0<\/p><p><strong>Nedostaci:<\/strong><\/p><ul><li>Manji kapacitet odvodnje u pore\u0111enju sa zatvorenim sistemom<\/li><li>Dimenzionisanje se mo\u017ee provesti samo prema tablicama 7 i 8 u skladu s normom EN12056-3<\/li><\/ul><\/td><td width=\"302\"><p><strong>Prednosti:<\/strong><\/p><ul><li>U odnosu na otvoreni sistem posti\u017ee se znatno ve\u0107i kapacitet odvodnje.<\/li><li>Dimenzionisanje i raspored odvodne cevi jednostavni su i temelje se isklju\u010divo na vrednostima odvodnje krovnih slivnika.<\/li><li>Uop\u0161teno ve\u0107a operativna pouzdanost pri odvodnji ki\u0161nice sa krova, jer je svaki krovni odvod pojedina\u010dno spojen na odvodnu cev i ako je jedna cev za\u010depljena, sve ostale su i dalje u funkciji<\/li><\/ul><p>\u00a0<\/p><p><strong>Nedostaci:<\/strong><\/p><ul><li>Vi\u0161i tro\u0161kovi materijala i rada<\/li><li>Ve\u0107i broj odvodnih cevi zahteva vi\u0161e gra\u0111evinskih radova za polaganje podzemnih cevi<\/li><\/ul><\/td><\/tr><\/tbody><\/table><h2>Zaklju\u010dak<\/h2><p>Projektovanje i dimenzionisanje sistema odvodnje krova zahteva pa\u017eljivu pripremu. To uklju\u010duje pravovremeno prikupljanje svih potrebnih informacija, \u0161to ponekad mo\u017ee oduzimati puno vremena.<\/p><p>Efikasnu odvodnju atmosferskih voda uvek treba smatrati celokupnim konceptom &#8211; od odvodnje vode sa krovova i povr\u0161ina poseda do nihovog ispu\u0161tanja u javnu kanalizaciju ili infiltracije na posedu. Ograni\u010denja koja name\u0107u vlasti kako bi se rasteretio kanalizacijioni sistem tokom obilnih ki\u0161a, zahtevaju dodatne mere, poput zadr\u017eavanja ili infiltracije te predstavljaju dodatne izazove za projektante.<\/p><p>Jo\u0161 jedna bitna komponenta sigurne odvodnje atmosferskih voda je odvodnja u hitnim slu\u010dajevima, koja osigurava da ne do\u0111e do o\u0161te\u0107enja zgrade \u010dak ni u slu\u010daju posebno jakih ki\u0161a (pljuskovi koji se javljaju jednom u sto godina). Vi\u0161e informacija o sigurnosnoj odvodnji mo\u017eete prona\u0107i <a href=\"http:\/\/www.hl.at\/upload_cms\/%7B86385609-ea48-7d86-302c-5d752a072d26%7DNotentw%C3%A4sserung_Pro_SRB_web.pdf\" target=\"_blank\" rel=\"noopener\">ovde<\/a>.<\/p><p><strong>Specifikacija krovnog odvoda koja odgovara konstrukciji krova<\/strong><\/p><p>Za ta\u010dnu specifikaciju sistema odvodnje krova, HL tim za podr\u0161ku rado \u0107e vam pomo\u0107i na <a href=\"mailto:support@hl.at\" target=\"_blank\" rel=\"noopener\">support@hl.at<\/a> ili kontaktiranjem va\u0161eg <a href=\"https:\/\/www.hutterer-lechner.com\/en\/contacts\/serbia_montenegro.aspx\" target=\"_blank\" rel=\"noopener\">regionalnog HL prodajnog predstavnika<\/a>. Sve \u0161to trebate u\u010diniti je zatra\u017eiti crte\u017e preseka sa opisima pojedina\u010dnih slojeva krovne konstrukcije od arhitekta ili projektanta i poslati ga HL timu. U kratkom vremenu dobi\u0107ete 3D prikaz kao i detalje u raznim formatima, uz ta\u010dnu specifikaciju redosleda elemenata slivnika:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9cc05a6 e-flex e-con-boxed e-con e-parent\" data-id=\"9cc05a6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b739f51 elementor-widget elementor-widget-spacer\" data-id=\"b739f51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1b16e56 e-grid e-con-boxed e-con e-parent\" data-id=\"1b16e56\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c0e916a elementor-widget elementor-widget-image\" data-id=\"c0e916a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"587\" height=\"476\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb13.png\" class=\"attachment-large size-large wp-image-6553\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb13.png 587w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb13-300x243.png 300w\" sizes=\"(max-width: 587px) 100vw, 587px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a56384e elementor-widget elementor-widget-image\" data-id=\"a56384e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"714\" height=\"504\" src=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb14.png\" class=\"attachment-large size-large wp-image-6561\" alt=\"\" srcset=\"https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb14.png 714w, https:\/\/www.siphoniker.at\/wp-content\/uploads\/2025\/05\/Abb14-300x212.png 300w\" sizes=\"(max-width: 714px) 100vw, 714px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bf96dcc e-flex e-con-boxed e-con e-parent\" data-id=\"bf96dcc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7bd09d4 elementor-widget elementor-widget-text-editor\" data-id=\"7bd09d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Relevantni standardi:<\/h3><p><strong>Za odvodnju krovova, balkona i terasa primenjuju se sljede\u0107i standardi:<\/strong><\/p><ul><li>EN1253-2 &#8211; Odvodi za zgrade &#8211; 2. deo: Krovni i podni slivnici bez sifona<\/li><li>EN 12056-3 &#8211; Sistemi gravitacione odvodnje unutar zgrada &#8211; 3. deo: Odvodnja sa krova, projektovanje i dimenzionisanje<\/li><li>\u00d6NORM B2501 &#8211; Sistem odvodnje za zgrade i nekretnine &#8211; Projektovanje, izvedba i ispitivanje &#8211; Dodatne odredbe za \u00d6NORM EN 12056<\/li><\/ul><p>\u00a0<\/p><p><strong>Izvori:<\/strong><\/p><ul><li><a href=\"https:\/\/www.austrian-standards.at\/de\/shop\/din-en-1253-1-2015-03~p2123330\">https:\/\/www.austrian-standards.at\/de\/shop\/din-en-1253-1-2015-03~p2123330<\/a><\/li><li><a href=\"https:\/\/www.austrian-standards.at\/de\/shop\/onorm-en-12056-1-2000-12-01~p1339394\">https:\/\/www.austrian-standards.at\/de\/shop\/onorm-en-12056-1-2000-12-01~p1339394<\/a><\/li><li><a href=\"https:\/\/www.austrian-standards.at\/de\/shop\/onorm-b-2501-2025-02-01~p4021532\">https:\/\/www.austrian-standards.at\/de\/shop\/onorm-b-2501-2025-02-01~p4021532<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Ovaj vodi\u010d pru\u017ea sveobuhvatan uvod u tehni\u010dke zahteve i prora\u010dune za dimenzionisanje sistema odvodnje za krovove, balkone i terase. Razmatraju se razli\u010dita re\u0161enja odvodnje i njihove specifi\u010dne prednosti i nedostaci kako bi se osiguralo pouzdano i standardno uskla\u0111eno projektovanje. Cilj je spre\u010diti o\u0161te\u0107enja od vlage i poplave u\u010dinkovitim re\u0161enjima odvodnje te osigurati dugoro\u010dnu funkcionalnost i sigurnost zgrade.<\/p>\n","protected":false},"author":10,"featured_media":7086,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[495],"tags":[493,492,491,494],"class_list":["post-6661","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-krov-i-terasa","tag-balkon-sr","tag-dach-sr","tag-entwaesserung-sr","tag-terrasse-sr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Smernice za dimenzionisanje odvodnje sa krovova, balkona i terasa - Siphoniker-Blog, HL Hutterer &amp; Lechner GmbH in Himberg<\/title>\n<meta name=\"description\" content=\"Ovaj vodi\u010d pru\u017ea sveobuhvatan uvod u tehni\u010dke zahteve i prora\u010dune za dimenzionisanje sistema odvodnje za krovove, balkone i terase. Razmatraju se razli\u010dita re\u0161enja odvodnje i njihove specifi\u010dne prednosti i nedostaci kako bi se osiguralo pouzdano i standardno uskla\u0111eno projektovanje. 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