A structural engineer supplied the load ratio of a 450UB45 steel section as being 0.5. a) If the section is exposed to fires on three sides. What is your estimate of the fire resistance level of the section? b) If the section is suddenly exposed to a non- standard fire condition of constant temperature of 800 °C with all side exposure, how long will it take for the steel to reach a temperature reading of 4500C? How long will it take for the steel to reach the critical temperature?

A structural engineer supplied the load ratio of a 450UB45 steel section as being 0.5. a) If the section is exposed to fires on three sides. What is your estimate of the fire resistance level of the section? b) If the section is suddenly exposed to a non- standard fire condition of constant temperature of 800 °C with all side exposure, how long will it take for the steel to reach a temperature reading of 4500C? How long will it take for the steel to reach the critical temperature?

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter39: Plumbing Systems

Section: Chapter Questions

Problem 3RQ

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Concept explainers

Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

Question

A structural engineer supplied the load ratio
of a 450UB45 steel section as being 0.5.
a) If the section is exposed to fires on three
sides. What is your estimate of the fire
resistance level of the section? b) If the
section is suddenly exposed to a non-
standard fire condition of constant
temperature of 800 °C with all side
exposure, how long will it take for the steel
to reach a temperature reading of 4500C?
How long will it take for the steel to reach
the critical temperature?

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