▁forming . ▁Research ▁on ▁several ▁of ▁these ▁topics ▁has ▁been ▁completed ▁or ▁is ▁in ▁the ▁process ▁of ▁being ▁completed ▁and ▁should ▁be ▁included ▁in ▁the ▁next ▁update ▁of ▁the ▁A IS I ▁Spec ification . ▁D SM ▁is ▁also ▁limited ▁in ▁determ ining ▁strength ▁for ▁sections ▁in ▁which ▁very ▁sl ender ▁elements ▁are ▁used . ▁This ▁is ▁due ▁to ▁the ▁strength ▁of ▁a ▁cross ▁section ▁being ▁predicted ▁as ▁a ▁whole ▁with ▁D SM ▁instead ▁of ▁using ▁the ▁effective ▁width ▁method ▁of ▁the ▁specification ▁which ▁breaks ▁the ▁cross ▁section ▁up ▁into ▁several ▁effective ▁elements . ▁One ▁sl ender ▁element ▁will ▁cause ▁low ▁strength ▁with ▁D SM , ▁which ▁is ▁not ▁the ▁case ▁with ▁the ▁current ▁specification ▁method . ▁The ▁finite ▁strip ▁method ▁using ▁C U FS M ▁is ▁the ▁most ▁commonly ▁used ▁approach ▁to ▁determine ▁the ▁el astic ▁bu ck ling ▁loads . ▁The ▁program ▁also ▁limits ▁D SM ▁because ▁holes ▁cannot ▁be ▁considered , ▁loads ▁have ▁to ▁be ▁uniform ▁along ▁the ▁member , ▁only ▁simply ▁supported ▁boundary ▁conditions ▁are ▁considered , ▁and ▁the ▁bu ck ling ▁modes ▁interact ▁and ▁cannot ▁be ▁easily ▁distinguish able ▁in ▁some ▁cases . ▁ ▁References ▁ ▁External ▁links ▁ ▁Organ izations ▁▁▁ ▁American ▁Iron ▁and ▁Ste el ▁Institute ▁( A IS I ) ▁▁ ▁Ste el ▁F ram ing ▁Indust ry ▁Association ▁( S FI A ) ▁▁ ▁Ste el ▁F ram ing ▁Alliance ▁( S FA ) ▁▁ ▁Ste el ▁Stud ▁Man ufact ur ers ▁Association ▁( SS MA ) ▁▁ ▁Cold - formed ▁Ste el ▁Engine