T-Rib chanelath : a material performing the functions of form and reinforcement ... (1918)
North Western Expanded Metal Co. · North Western Expanded Metal Co. · leaf 68
» … One or the requirements i >r fireproof construction is theenclosing ot all steel columns with s fire-resisting construc-tion. Experienced engineers recommend the use of a con-struction that will permit an air space between the structuralsteel and the fi reproofing, having the least possible…
![An illustration from Concrete in the country / [American Cement Company]. (1910)](https://img.insideoutlibrary.com/img/200/ia-ConcreteInTheCountryamericanCementCompany-26-24.webp)
