{"id":29541,"date":"2026-05-28T07:12:18","date_gmt":"2026-05-28T07:12:18","guid":{"rendered":"https:\/\/www.weland.com\/?p=29541"},"modified":"2026-05-28T07:13:27","modified_gmt":"2026-05-28T07:13:27","slug":"sa-star-sig-spiraltrappan-efter-50-ar-i-verkligheten","status":"publish","type":"post","link":"https:\/\/www.weland.com\/sv\/sa-star-sig-spiraltrappan-efter-50-ar-i-verkligheten\/","title":{"rendered":"S\u00e5 st\u00e5r sig spiraltrappan efter 50 \u00e5r i verkligheten"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull is-light\"><img loading=\"lazy\" decoding=\"async\" width=\"2000\" height=\"800\" class=\"wp-block-cover__image-background wp-image-29546 size-full\" alt=\"\" src=\"https:\/\/www.weland.com\/wp-content\/uploads\/2026\/05\/spiraltrappa-aw00011899-2000x800-1.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/www.weland.com\/wp-content\/uploads\/2026\/05\/spiraltrappa-aw00011899-2000x800-1.jpg 2000w, https:\/\/www.weland.com\/wp-content\/uploads\/2026\/05\/spiraltrappa-aw00011899-2000x800-1-300x120.jpg 300w, https:\/\/www.weland.com\/wp-content\/uploads\/2026\/05\/spiraltrappa-aw00011899-2000x800-1-1024x410.jpg 1024w, https:\/\/www.weland.com\/wp-content\/uploads\/2026\/05\/spiraltrappa-aw00011899-2000x800-1-150x60.jpg 150w, https:\/\/www.weland.com\/wp-content\/uploads\/2026\/05\/spiraltrappa-aw00011899-2000x800-1-768x307.jpg 768w, https:\/\/www.weland.com\/wp-content\/uploads\/2026\/05\/spiraltrappa-aw00011899-2000x800-1-1536x614.jpg 1536w, https:\/\/www.weland.com\/wp-content\/uploads\/2026\/05\/spiraltrappa-aw00011899-2000x800-1-1568x627.jpg 1568w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#9298a5\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-large-font-size\"><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">        <div class=\"container page-breadcrumb\">\n            <div class=\"row\">\n                <div class=\"col-sm-12\" style=\"padding-left: 0\">\n                    <nav aria-label=\"breadcrumb\">\n                        <ol class=\"breadcrumb\">\n                            <li class=\"breadcrumb-item\">\n                                <a href=\"https:\/\/www.weland.com\/sv\/\">Startsida<\/a>\n                            <\/li>\n                              \n                                                            <li class=\"breadcrumb-item CC active\" aria-current=\"page\">\n                                    S\u00e5 st\u00e5r sig spiraltrappan efter 50 \u00e5r i verkligheten                                <\/li>\n                                                    <\/ol>\n                    <\/nav>\n                <\/div>\n            <\/div>\n        <\/div>\n\n        \n\n\n<h1 class=\"wp-block-heading\">S\u00e5 st\u00e5r sig spiraltrappan efter 50 \u00e5r i verkligheten<\/h1>\n\n\n\n<p>H\u00e5llbarhet handlar inte enbart om materialval, utan ocks\u00e5 om hur en konstruktion fungerar p\u00e5 l\u00e5ng sikt; livsl\u00e4ngd, underh\u00e5llsbehov och f\u00f6rm\u00e5ga att beh\u00e5lla sin funktion. Vad h\u00e4nder med en spiraltrappa efter 50 \u00e5r i bruk? \u00c4ldre trappor i svenska byggnader visar vad som faktiskt h\u00e5ller \u00f6ver tid \u2013 och varf\u00f6r.<\/p>\n\n\n\n<p>Spiraltrappor har funnits sedan medeltiden, d\u00e5 de byggdes av sten i borgar och torn. Med industrialiseringen b\u00f6rjade de tillverkas i j\u00e4rn och st\u00e5l. \u00c4ven om material och tillverkningsmetoder har utvecklats med tiden \u00e4r principen densamma: en centrumpelare som b\u00e4r konstruktionen och f\u00f6rdelar belastningen j\u00e4mnt. Det \u00e4r en av anledningarna till att spiraltrappor kan fungera i decennier. Men det \u00e4r inte bara konstruktionen som avg\u00f6r trappans livsl\u00e4ngd, utan ocks\u00e5 hur v\u00e4l den st\u00e5r emot tidens p\u00e5verkan. Livsl\u00e4ngden p\u00e5verkas bland annat av v\u00e4der, fukt och slitage.<\/p>\n\n\n\n<p>Welands spiraltrappor varmf\u00f6rzinkas, en av de mest effektiva metoderna f\u00f6r att skydda st\u00e5l mot korrosion. N\u00e4r st\u00e5let doppas i sm\u00e4lt zink bildas ett skyddande lager som blir en del av materialet. Zinklagret forts\u00e4tter att skydda st\u00e5let \u00e4ven vid mindre repor och skador, vilket ger ett sj\u00e4lvl\u00e4kande korrosionsskydd. Resultatet \u00e4r en trappa som i m\u00e5nga fall st\u00e5r i decennier utan behov av underh\u00e5ll, med en l\u00e5g livsl\u00e4ngdskostnad j\u00e4mf\u00f6rt med andra korrosionsskydd.<\/p>\n\n\n\n<p><strong>50 \u00e5r i bruk<\/strong><strong><br><\/strong>Ett tydligt exempel p\u00e5 hur konstruktion och varmf\u00f6rzinkning st\u00e5r sig \u00f6ver tid \u00e4r Tegn\u00e9rtornet utanf\u00f6r Gr\u00e4nna, \u00e4ven kallat Skogstornet. Tornet \u00e4r 27 meter h\u00f6gt och erbjuder utsikt \u00f6ver fyra landskap. Men man f\u00e5r jobba lite f\u00f6r utsikten, spiraltrappan upp till tornet har 144 steg. Tornet uppf\u00f6rdes 1971 p\u00e5 initiativ av journalisten och idrottsprofilen Torsten Tegn\u00e9r. Mer \u00e4n 50 \u00e5r senare \u00e4r trappan fortfarande i bruk och har st\u00e5tt emot v\u00e4der, skiftande temperaturer och tusentals bes\u00f6kare.<\/p>\n\n\n\n<p>Ett annat exempel finns i den tidigare bryggeribyggnaden vid Nissan i Halmstad, som senare byggts om till kulturskola. H\u00e4r har spiraltrappan g\u00e5tt fr\u00e5n att vara en del av en industrimilj\u00f6 till att anv\u00e4ndas i en offentlig verksamhet, utan att f\u00f6rlora sin funktion. Liknande exempel finns runt om i landet, fr\u00e5n industrianl\u00e4ggningar till offentliga milj\u00f6er, d\u00e4r spiraltrappor installerade p\u00e5 70- och 80-talet fortfarande anv\u00e4nds dagligen.<\/p>\n\n\n\n<p>F\u00f6r arkitekter, fastighets\u00e4gare och projekt\u00f6rer handlar det inte bara om hur l\u00e4nge en l\u00f6sning h\u00e5ller, utan ocks\u00e5 om vad den kostar under sin livsl\u00e4ngd. En konstruktion som fungerar i 50 \u00e5r utan st\u00f6rre \u00e5tg\u00e4rder inneb\u00e4r l\u00e4gre kostnader, f\u00e4rre driftstopp och mindre behov av utbyte. \u00c4ven efter decennier av anv\u00e4ndning kan materialet f\u00e5 nytt liv. St\u00e5let kan sm\u00e4ltas ned och \u00e5tervinnas till nya produkter, vilket g\u00f6r varmf\u00f6rzinkade spiraltrappor till en l\u00e5ngsiktig l\u00f6sning \u00e4ven ur ett cirkul\u00e4rt perspektiv.<\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Publicerad:<\/strong>\u00a02026-05-28<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"row\">\n        <div class=\"col-12 ProductInfoBox\">\n        <div id=\"ProductCarousel-block_43408e52518c4acc6bc85bc248b8aefd\" class=\"welandCarousel carousel slide\"\n             data-interval=\"false\" data-ride=\"carousel\">\n                                    <ol class=\"carousel-indicators\">\n                                                    <li 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