- Author
- Thurston, S. J.
- Title
- Modelling Fire Behavior of Metal Pipe Penetrations Through Concrete Walls.
- Coporate
- Building Research Association of New Zealand, Judgeford
- Report
- Study Report No. 65, 1996, 101 p.
- Keywords
- walls | concretes | fire behavior | pipes | mathematical models | seals | temperature measurements | penetration | fire resistance testing | thermocouples
- Identifiers
- finite element (NISA) analysis; time history temperature plots; proprietary products used; methodology for performing NISA analysis; measured temperature profiles along pipes; details of pipes and seals; description of seals used; seal backing rods and seal age at testing; measured concrete properties; thermocouple labelling system; observations during test on 100 mm thick wall; observations during test on 175 mm thick wall; time to reach 180ยบ temperature rise; volumetric enthalpy as a function of temperature; assumed steel and copper thermal properties
- Abstract
- The objective of this project was to model the behavior of pipe penetrations as they pass through fire-rated concrete walls so that the amount of full-scale testing required can be reduced, greater extrapolation of results can be made, and non-standard fire scenarios can be considered. The development of a (NISA) computer model to simulate heat flow in a pipe-penetrated concrete wall during a fire is described, and comparisons are made between predictions and experimental results. The results of two full-scale fire tests using a total of 14 pipes and over 200 thermocouples are presented. These tests were performed to provide a database to assist the modelling. Variables were pipe diameter and thickness, pipe material and seal type.