{"id":62915,"date":"1989-11-01T05:00:00","date_gmt":"1989-11-01T05:00:00","guid":{"rendered":"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/article\/self-lifting-forms_o"},"modified":"1989-11-01T05:00:00","modified_gmt":"1989-11-01T05:00:00","slug":"self-lifting-forms_o","status":"publish","type":"post","link":"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/how-to\/materials\/self-lifting-forms_o\/","title":{"rendered":"Self-Lifting Forms"},"content":{"rendered":"<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\"> <p class=\"wp-block-paragraph\">Self-lifting forms offer a way to expedite construction of columns, spandrels, shear walls, and core walls of high-rise buildings. The reasons for choosing such formwork are largely economic. Freeing the cranes from form handling work leaves more time for setting steel, stocking building materials, and placing concrete. The self-raising forms are supported on the concrete structure independent from all other operations.<\/p> <p class=\"wp-block-paragraph\">PLANNING A PROJECT WITH SELF-LIFTING FORMS<\/p> <p class=\"wp-block-paragraph\">Self-lifting forms are typically used on fast-track work, and more extensive planning is required at the outset. Items to be considered include: load imposed on the building by the forms and lifters; capacity of other hoisting equipment on site; wind load on the forms; crew size; cycle time; debris nets or guards on the outside of forms; jib boom or hoist mounted on top of post lifters for lifting form parts or setting rebar; mechanical parts that must be received, assembled, or maintained to keep the lifters working.<\/p> <p class=\"wp-block-paragraph\">ROLL-AROUND FORM LIFTERS<\/p> <p class=\"wp-block-paragraph\">On composite buildings, where slabs are poured ahead of the columns and spandrels, roll-around lifters work well. Mounted on wheels, these lifters can be rolled around the deck by hand. They are equipped with a hydraulic-powered winch for lifting and a hydraulically operated boom for in and out movement.<\/p> <p class=\"wp-block-paragraph\">POST-TYPE LIFTERS<\/p> <p class=\"wp-block-paragraph\">Post-type lifters are mounted on the structure from outside the building. They are powered by an electric motor driving a threaded rod, by hydraulic cylinders, or by cable grippers that climb a cable. The post lifter is more versatile than the roll-around lifter because it works on all types of vertical construction; it does not depend on having the slabs placed ahead of columns and spandrels.<\/p><\/div> ","protected":false},"excerpt":{"rendered":"<p>Self-lifting forms offer a way to expedite construction of columns, spandrels, shear walls, and core walls of high-rise buildings. The reasons for choosing such formwork are largely economic. Freeing the cranes from form handling work leaves more time for setting steel, stocking building materials, and placing concrete. The self-raising forms are supported on the concrete [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"scheduledNewsletterDates":[],"_scheduled_newsletter_id":0,"footnotes":"","jetpack_post_was_ever_published":false,"zonda_content_type_url_append":"_o","zonda_dfp_zone":"","zonda_exclude_recommended_contents":false,"zonda_exclude_most_popular":true,"zonda_exclude_tagged_results":false,"zonda_eyebrow":"Features","zonda_last_newsletter_date":"2099-12-31T23:59:59.999-05:00","zonda_original_url":"","zonda_pdf_version":62917,"zonda_print_headline":"Self-Lifting Forms","zonda_promo_abstract":"Self-lifting forms offer a way to expedite construction of columns, spandrels, shear walls, and core walls of high-rise buildings.","zonda_promo_headline":"","zonda_promo_image":0,"zonda_subheadline":"Speed columns and spandrels for high-rise buildings"},"tags":[],"news_item_type":[28],"section_10":[72606],"subject":[91,3585],"organization":[],"award":[],"person":[],"product_type_10":[],"content-group":[],"event":[],"location":[],"state":[],"brand":[],"jlc-category":[],"year_tax":[],"sponsor":[],"coauthors":[88590],"class_list":["post-62915","post","type-post","status-publish","format-standard","hentry","news_item_type-article","section_10-materials","subject-building-materials","subject-rollformer"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Self-Lifting Forms<\/title>\n<meta name=\"description\" content=\"Speed columns and spandrels for high-rise buildings\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/how-to\/materials\/self-lifting-forms_o\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Self-Lifting Forms\" \/>\n<meta property=\"og:description\" content=\"Speed columns and spandrels for high-rise buildings\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/how-to\/materials\/self-lifting-forms_o\/\" \/>\n<meta property=\"og:site_name\" content=\"Concrete Construction Magazine\" \/>\n<meta property=\"article:published_time\" content=\"1989-11-01T05:00:00+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n\t<meta name=\"twitter:label2\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data2\" content=\"W. 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Fulton\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/how-to\\\/materials\\\/self-lifting-forms_o#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/how-to\\\/materials\\\/self-lifting-forms_o\\\/\"},\"author\":{\"name\":\"\",\"@id\":\"\"},\"headline\":\"Self-Lifting Forms\",\"datePublished\":\"1989-11-01T05:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/how-to\\\/materials\\\/self-lifting-forms_o\\\/\"},\"wordCount\":277,\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/how-to\\\/materials\\\/self-lifting-forms_o\\\/\",\"url\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/how-to\\\/materials\\\/self-lifting-forms_o\",\"name\":\"Self-Lifting Forms\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/#website\"},\"datePublished\":\"1989-11-01T05:00:00+00:00\",\"author\":{\"@id\":\"\"},\"description\":\"Speed columns and spandrels for high-rise buildings\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/how-to\\\/materials\\\/self-lifting-forms_o#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/how-to\\\/materials\\\/self-lifting-forms_o\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/how-to\\\/materials\\\/self-lifting-forms_o#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Self-Lifting Forms\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/#website\",\"url\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/\",\"name\":\"Concrete Construction Magazine\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/zonda-develop.go-vip.net\\\/concrete-construction\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Self-Lifting Forms","description":"Speed columns and spandrels for high-rise buildings","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/how-to\/materials\/self-lifting-forms_o","og_locale":"en_US","og_type":"article","og_title":"Self-Lifting Forms","og_description":"Speed columns and spandrels for high-rise buildings","og_url":"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/how-to\/materials\/self-lifting-forms_o\/","og_site_name":"Concrete Construction Magazine","article_published_time":"1989-11-01T05:00:00+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute","Written by":"W. 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