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An I beam is also a design not a material, if you want to be pedantic. You can buy aluminum ones.
by jdsully 8y ago
An I beam is also a design not a material, if you want to be pedantic. You can buy aluminum ones.
- newnewpdro 8y agoThat's fair, but I know of no aluminum I-beams used in modern highrise construction which is the context of my sentence. Truss roofs are made from steel of various shapes, even I-beams, and wood. I'm only asking for clarification if all truss designs regardless of material are problematic in a fire.