{"id":12326,"date":"2024-01-25T14:22:18","date_gmt":"2024-01-25T14:22:18","guid":{"rendered":"https:\/\/support.buildsoft.eu\/?post_type=ht_kb&p=12326"},"modified":"2025-06-16T07:16:50","modified_gmt":"2025-06-16T07:16:50","slug":"ds-ec-04-fire-resistance-of-a-welded-box-section","status":"publish","type":"ht_kb","link":"https:\/\/support.buildsoft.eu\/fr\/knowledge-base\/ds-ec-04-fire-resistance-of-a-welded-box-section\/","title":{"rendered":"DS EC 04: Fire resistance of a welded box section"},"content":{"rendered":"

Description\"\"<\/h2>\n
\n\n\n\n\n\n\n\n
Geometry<\/th>\nCross-section:<\/td>\nWelded box section
\n\"h=700mm\"
\n\"b=450mm\"
\n\"t=25mm\"<\/td>\n<\/tr>\n
Material:<\/td>\nS355<\/td>\n<\/tr>\n
Load<\/th>\nDead loads:
\nSnow:<\/td>\n		9,32kN\/m
\n11,25kN\/m<\/td>\n<\/tr>\n
Standard<\/th>\n<\/td>\nEN 1993-1-1 [- -]\nEN 1993-1-2 [- -]<\/td>\n<\/tr>\n
Parameters for design<\/th>\nFire state:<\/td>\nR30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Diamonds results and comparison<\/h2>\n

\"\"<\/p>\n

Temperature of the cross-section after 30min exposure to ISO 834 fire<\/strong><\/p>\n

\"\"<\/p>\n

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

Verification in the field of resistances<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Results<\/th>\nIndependent reference<\/th>\nDiamonds<\/th>\nDifference<\/th>\n<\/tr>\n
\"M_{fi.Ed}\"<\/td>\n1427,1kNm<\/td>\n1427,1kNm<\/td>\n0,00%<\/td>\n<\/tr>\n
\"\theta_{a.max.30}\"<\/td>\n646\u00b0C<\/td>\n649\u00b0C<\/td>\n0,46%<\/td>\n<\/tr>\n
\"k_{y.\theta}\"<\/td>\n0,360<\/td>\n0,352<\/td>\n-2,22%<\/td>\n<\/tr>\n
\"\kappa_1\"<\/td>\n1,0<\/td>\n1,0<\/td>\n0,00%<\/td>\n<\/tr>\n
\"M_{fi.Rd}\"<\/td>\n1645,5kNm<\/td>\n1608,1kNm<\/td>\n-2,27%<\/td>\n<\/tr>\n
Unity check \"\frac{N_{fi.Ed}}{N_{b.fi.Rd}}\"<\/td>\n87%<\/td>\n89%<\/td>\n2,3%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Verification in the field of temperatures<\/h3>\n
\n\n\n\n\n\n\n\n
Results<\/th>\nIndependent reference<\/th>\nDiamonds<\/th>\nDifference<\/th>\n<\/tr>\n
\"M_{fi.Rd.0}\"<\/td>\n4570,6kNm<\/td>\n4570,6kNm<\/td>\n0,00%<\/td>\n<\/tr>\n
\"\mu_0\"<\/td>\n0,312<\/td>\n0,312<\/td>\n0,00%<\/td>\n<\/tr>\n
\"\theta_{a.cr}}\"<\/td>\n659\u00b0C<\/td>\n665,7\u00b0C<\/td>\n1,01%<\/td>\n<\/tr>\n
Unity check \"\frac{\theta_{a.max.90}}}{\theta_{a.cr}}\"<\/td>\n98%<\/td>\n98%<\/td>\n0,00%<\/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
  • Schaumann P. & Trautmann T. (2005). Example: Fire design of protected HEB section column exposed to the standard temperature time curve. Calculation Sheet Access Steel<\/i>, SX036a-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 Temperature of the cross-section after 30min exposure to ISO 834 fire Intermediate results in Diamonds for bending around the y’-axis in fire state Verification in the field of resistances Verification in the field of temperatures References EN 1993-1-1: 2005+AC:2009 EN 1993-1-2: 2005 Schaumann P. &…<\/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\/12326"}],"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=12326"}],"version-history":[{"count":3,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb\/12326\/revisions"}],"predecessor-version":[{"id":15326,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb\/12326\/revisions\/15326"}],"wp:attachment":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/media?parent=12326"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb-category?post=12326"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb-tag?post=12326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}