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مجله STRUCTURE ، ژانویه 2018 فایل پی دی اف در 60 صفحه برخی از مطالب این نشریه : Post-Tensioned Concrete Construction Tendon Repairs and Modifications Fire Resistance of Flat Plate Voided Concrete Floor Systems Key Differences and Practical Applications for Cement and Gypsum Underlayments Support Restraints and Strength of Post-Tensioned Members Wood-Framed Shear Walls : Utilizing Force Transfer Around Openings Shrinkage-Compensating Concrete Designs Post-Installed Adhesive Anchor Systems : Reinforcing Bar Development Length using the Provisions of ACI 318 Structural Engineers and Climate Change 2018 IBC and 2018 IEBC Changes Related to Wood Construction Connecting Chicago’s “Second Shoreline” منبع دانلود از پیوست structure magazine 01 jan 2018.pdf

Fire resistance of loadbearing LSF assemblies By Farid Alfawakhiri1 and Mohamed A. Sultan2 A version of this paper was presented at the 15th International Specialty Conference on Cold-Formed Steel Structures, St. Louis, MO, U.S.A., October 2000 Institute for Research in Construction, National Research Council Cana ABSTRACT This paper presents an analytical thermal-structural model for loadbearing lightweight steel framed (LSF) walls exposed to fire on one side. The model reflects temperature and deformation data from six standard fire resistance tests conducted recently by the National Research Council of Canada in partnership with the North American steel industry. Some characteristic patterns in thermal transmission and structural behaviour are discussed. Temperature histories across LSF assemblies are simulated numerically by explicit integration of transient heat transfer equations. The apparent thermal properties are calibrated for gypsum board and three types of insulation. Analytical procedures are presented to simulate lateral deformation histories and predict structural failure times. The model illustrates how different heating regimes in cold formed steel studs cause different structural failure modes. به نقل از کانال تلگرام civilca دانلود از پیوست مقاومت ال اس اف در برابر آتش.pdf