{"id":12316,"date":"2024-01-18T15:19:10","date_gmt":"2024-01-18T15:19:10","guid":{"rendered":"https:\/\/support.buildsoft.eu\/?post_type=ht_kb&p=12316"},"modified":"2024-08-09T13:59:36","modified_gmt":"2024-08-09T13:59:36","slug":"ds-ec-03-fire-design-of-protected-heb-column-exposed-to-the-standard-fire-curve","status":"publish","type":"ht_kb","link":"https:\/\/support.buildsoft.eu\/fr\/knowledge-base\/ds-ec-03-fire-design-of-protected-heb-column-exposed-to-the-standard-fire-curve\/","title":{"rendered":"DS EC 03: Fire design of protected HEB column exposed to the standard fire curve"},"content":{"rendered":"

Description\"\"<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Geometry<\/th>\nCross-section:<\/td>\nHEB 180 protected with 20mm perlite & cement<\/td>\n<\/tr>\n
Material:<\/td>\nS355<\/td>\n<\/tr>\n
Perlite & cement:<\/td>\n\"\rho = 550kg/m^3\"
\n\"c_p=1100 \frac{J}{kg \cdot K}\"
\n\"\lambda_p=0,12 \frac{W}{m\cdot K}\"<\/td>\n<\/tr>\n
Load<\/th>\nDead loads in points A:
\nLife loads in points A:<\/td>\n		185kN
\n175kN<\/td>\n<\/tr>\n
Standard<\/th>\n<\/td>\nEN 1993-1-1 [- -]\nEN 1993-1-2 [- -]<\/td>\n<\/tr>\n
Parameters for design<\/th>\nCase 1: cold state<\/td>\nbuckling length 3.50m<\/td>\n<\/tr>\n
<\/th>\nCase 2: fire state<\/td>\nR90
\nbuckling length 2.45m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Diamonds results and comparison<\/h2>\n

Case 1: cold state<\/h3>\n

\"\"<\/p>\n

Intermediate results in Diamonds for buckling around the y’-axis in cold state<\/strong><\/p>\n

\n\n\n\n\n\n\n\n\n\n
Results<\/th>\nIndependent reference<\/th>\nDiamonds<\/th>\nDifference 1<\/a><\/sup><\/th>\n<\/tr>\n
\"N_{Ed}\"<\/td>\n1024,5kN<\/td>\n1024,5kN<\/td>\n0,00%<\/td>\n<\/tr>\n
\"bar{lambda_{z}}\"<\/td>\n1,003<\/td>\n1,002<\/td>\n-0,10%<\/td>\n<\/tr>\n
\"phi_{z}\"<\/td>\n1,200<\/td>\n1,199<\/td>\n-0,08%<\/td>\n<\/tr>\n
\"chi_{z}\"<\/td>\n0,538<\/td>\n0,539<\/td>\n0,19%<\/td>\n<\/tr>\n
\"N_{b.Rd}\"<\/td>\n1246,2 kN<\/td>\n1247,5kN<\/td>\n0,10%<\/td>\n<\/tr>\n
Unity check \"frac{N_{Ed}}{N_{b,Rd}}\"<\/td>\n82,21%<\/td>\n82,12%<\/td>\n-0,10%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

1. The difference arises because Access Steel calculates with rounded profile properties, while Diamonds uses exact profile properties.
\nFurthermore, there is also a discrepancy in the Access Steel calculation sheet: \"bar{lambda_{z}}\" is calculated with \"A= 6530mm^2\", while for \"N_{b.Rd}\" an area of \"6525mm^2\"\u00a0is used.
\n<\/sup><\/p>\n

Case 2: fire state<\/h3>\n

\"\"<\/p>\n

Temperature of the cross-section after 90min exposure to ISO 834 fire<\/strong><\/p>\n

\"\"<\/p>\n

Intermediate results in Diamonds for buckling around the y’-axis in fire state<\/strong><\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Results<\/th>\nIndependent reference<\/th>\nDiamonds<\/th>\nDifference 1<\/a><\/sup><\/th>\n<\/tr>\n
\"N_{fi.Ed}\"<\/td>\n475kN<\/td>\n475kN<\/td>\n0,00%<\/td>\n<\/tr>\n
\"\theta_{a.max}}\"<\/td>\n554\u00b0C<\/td>\n552\u00b0C<\/td>\n-0,36%<\/td>\n<\/tr>\n
\"k_{y.\theta}}\"<\/td>\n0,613<\/td>\n0,618<\/td>\n0,82%<\/td>\n<\/tr>\n
\"k_{E.\theta}}\"<\/td>\n0,444<\/td>\n0,449<\/td>\n1,13%<\/td>\n<\/tr>\n
\"bar{\lambda_{z.fi}}\"<\/td>\n0,825<\/td>\n0,832<\/td>\n0,85%<\/td>\n<\/tr>\n
\"\chi_{z.fi}\"<\/td>\n0,581<\/td>\n0,582<\/td>\n0,17%<\/td>\n<\/tr>\n
\"N_{b.fi.Rd}\"<\/td>\n825,0kN<\/td>\n832,9kN<\/td>\n0,97%<\/td>\n<\/tr>\n
Unity check \"frac{N_{fi.Ed}}{N_{b.fi.Rd}}\"<\/td>\n57.6%<\/td>\n57,0%<\/td>\n-0,96%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

References<\/h2>\n
    \n
  • EN 1993-1-1: 2005+AC:2009
    \nEN 1993-1-2: 2005<\/li>\n
  • Sokol, Z. (2006). Example: Fire design of protected HEB section column exposed to the standard temperature time curve. Calculation Sheet Access Steel<\/i>, SX044a-EN-EU<\/i><\/li>\n<\/ul>\n
      \n
    • Tested in Diamonds 2026.<\/li>\n<\/ul>\n\n","protected":false},"excerpt":{"rendered":"

      Description Diamonds results and comparison Case 1: cold state Intermediate results in Diamonds for buckling around the y’-axis in cold state 1. The difference arises because Access Steel calculates with rounded profile properties, while Diamonds uses exact profile properties. Furthermore, there is also a discrepancy in the Access Steel calculation…<\/p>\n","protected":false},"author":3,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":[],"ht-kb-category":[1213],"ht-kb-tag":[],"_links":{"self":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb\/12316"}],"collection":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/comments?post=12316"}],"version-history":[{"count":3,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb\/12316\/revisions"}],"predecessor-version":[{"id":13316,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb\/12316\/revisions\/13316"}],"wp:attachment":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/media?parent=12316"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb-category?post=12316"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb-tag?post=12316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}