{"id":495808,"date":"2024-11-05T12:55:41","date_gmt":"2024-11-05T12:55:41","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/as-4254-12012\/"},"modified":"2024-11-05T12:55:41","modified_gmt":"2024-11-05T12:55:41","slug":"as-4254-12012","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/as\/as-4254-12012\/","title":{"rendered":"AS 4254.1:2012"},"content":{"rendered":"<p>Specifies requirements for materials, construction and installation, including some aspects of performance, for flexible duct for air-handling systems in buildings and facilities. <\/p>\n<p><b>Scope<\/b><\/p>\n<p> This Standard specifies requirements for materials, construction and installation, including some aspects of performance, for flexible duct for air-handling systems in buildings and facilities. It covers &#8211; <br \/> (a) dimensional stability (deformation and deflection) under positive or negative pressure applications and static loads; <br \/> (b) leakage under positive or negative pressure; <br \/> (c) support; and <br \/> (d) fire hazard requirements. <br \/> This Standard does not cover the following: <br \/> (i) Noise generation and transmission. <br \/> (ii) Exposure to damage from &#8211; <br \/> (A) transportation and handling; <br \/> (B) weather and temperature extremes; <br \/> (C) flexure cycle; <br \/> (D) chemical corrosion; and <br \/> (E) other in-service conditions specific to the installation. <br \/> (iii) Impact loading, such as &#8211; <br \/> (A) fire; <br \/> (B) earthquake; <br \/> (C) sudden stoppage of airflow; and <br \/> (E) resistance to airflow.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Ductwork for air-handling systems in buildings-Flexible duct<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/as\/\"><b>AS<\/b><\/a><\/td>\n<td>2012-06-08<\/td>\n<td>29<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":495818,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1274,2633],"product_tag":[],"class_list":{"0":"post-495808","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-140-30","7":"product_cat-as","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/495808","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/495818"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=495808"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=495808"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=495808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}