{"id":220695,"date":"2024-10-19T14:19:25","date_gmt":"2024-10-19T14:19:25","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-6993-21990\/"},"modified":"2024-10-25T07:46:24","modified_gmt":"2024-10-25T07:46:24","slug":"bs-6993-21990","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-6993-21990\/","title":{"rendered":"BS 6993-2:1990"},"content":{"rendered":"

This Part of BS 6993 describes a method for measuring the U<\/i>-value (thermal transmittance) of the central area of single, double or multiple glazing using hot-box apparatus complying with BS 874-3.1. The edge effect, due to the thermal bridge through the spacer of double or multiple glazing, is effectively eliminated in this method.<\/p>\n

The method is designed to measure the U<\/i>-value of the glazing alone, i.e. the glass (or alternative glazing material) and any enclosed air space, and the additional information required in the test reports of clause 8<\/b> and A.9<\/b> of BS 874-3.1:1987.<\/p>\n

Appendix A specifies values to be used in the calculation of a U<\/i>-value in accordance with BS 6993-1, when such a calculated value is to be compared with that obtained by direct measurement in accordance with this Part of BS 6993.<\/p>\n

Appendix A gives a worked example, which illustrates the use of this Part of BS 6993.<\/p>\n

\n

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.<\/p>\n<\/blockquote>\n

Method for measuring the transmittance of the central area of single, double or multiple glazing using hot box apparatus complying with BS 874-3.1. The edge effect due to the thermal bridge through the spacer of double or multiple glazing is effectively eliminated by this method.<\/p>\n","protected":false},"excerpt":{"rendered":"

Thermal and radiometric properties of glazing – Method for direct measurement of U-value (thermal transmittance)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n1990<\/td>\n14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":220701,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1158,2641],"product_tag":[],"class_list":{"0":"post-220695","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-81-040-20","7":"product_cat-bsi","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\/220695","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\/220701"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=220695"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=220695"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=220695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}