I don't know what the specific construction of the towers was, but typically, small gauge steel studs covered by 1/2 inch sheet rock are used to partition steel structures in the USA. Sheet rock is a fair fire barrier and is used as such in residential wood buildings to prevent fire from going between floors [fire block] but is easily torn apart. Ken
At 03:41 PM 9/17/01 +0930, you wrote: >Dear Group, >Just a question that is puzzling my husband - someone who has visited the >WTC would know... were the steel girders etc exposed and NOT covered by >concrete? From the ruins it appears so. > >The reason for asking is that building regulations in Australia stipulate >that structural steel must be encased in concrete to keep it cool in case of >fire. >Regards, >Judith. > > > > >-- >The silver-list is a moderated forum for discussion of colloidal silver. > >To join or quit silver-list or silver-digest send an e-mail message to: >[email protected] -or- [email protected] >with the word subscribe or unsubscribe in the SUBJECT line. > >To post, address your message to: [email protected] >Silver-list archive: http://escribe.com/health/thesilverlist/index.html >List maintainer: Mike Devour <[email protected]> > >
