Structural Performance of Composite Floor Systems in Fire

Presented By: Lisa Choe, NIST

Description: The National Institute of Standards and Technology (NIST) has been conducting a series of large compartment fire experiments on the full-scale test building constructed at the National Fire Research Laboratory, with the aim to quantify the complex behavior and limit states of the 9.1 m × 6.1 m composite floor system commonly built in the United States. This talk will provide a brief overview of the NIST composite floor test program and some results from the first and second fire experiments and will discuss the influence of steel reinforcement (welded wire reinforcement versus reinforcing bars) on the structural performance of the composite floor slab subjected to a large compartment fire. Concepts covered in ASCE/SEI Manual of Practice No. 138 Section 8.3 (Mechanical Properties of Concrete and Reinforcing Steel) are highlighted in this talk.