. ▁That ▁Spec ification , ▁now ▁more ▁than ▁ 2 0 ▁years ▁old , ▁is ▁being ▁replaced ▁by ▁a ▁new ▁one , ▁which ▁will ▁be , ▁in ▁general , ▁an ▁ad a ption ▁of ▁the ▁current ▁A IS I ▁one . ▁The ▁former ▁C IR SO C ▁ 3 0 3 ▁was ▁an ▁ad a ption ▁of ▁the ▁Canadian ▁code ▁of ▁that ▁time . ▁At ▁this ▁time ▁C IR SO C ▁ 3 0 3 ▁was ▁very ▁old , ▁now ▁C IR SO C ▁ 3 0 1 ▁is ▁in ▁revolution ▁to ▁be ▁aligned ▁with ▁the ▁American ▁codes ▁( LR FD ▁design ). ▁In ▁the ▁near ▁future ▁both ▁codes ▁will ▁be ▁aligned ▁also ▁in ▁design ations ▁and ▁termin ology . ▁▁ ▁Asia ▁▁ ▁Philippines ▁National ▁Struct ural ▁Code ▁of ▁the ▁Philippines ▁ 2 0 1 0 , ▁Volume ▁ 1 ▁Build ings , ▁Tow ers , ▁and ▁other ▁Vert ical ▁Struct ures , ▁ ▁Chapter ▁ 5 ▁Part ▁ 3 ▁Design ▁of ▁Cold - Form ed ▁Ste el ▁Struct ural ▁M embers ▁is ▁based ▁on ▁A IS I ▁S 1 0 0 - 2 0 0 7 ▁ ▁India ▁Spec ification : IS : 8 0 1 , ▁Indian ▁standard ▁code ▁of ▁practice ▁for ▁use ▁of ▁cold - formed ▁light ▁gauge ▁steel ▁struct ural ▁members ▁in ▁general ▁building ▁construction , ▁Bureau ▁of ▁Indian ▁Stand ards , ▁New ▁Del hi ▁( 1 9 7 5 ). ▁( current ly ▁under ▁revision ) ▁Building ▁Code ▁: ▁see ▁- ▁model ▁code ▁National ▁Building ▁Code ▁of ▁India