Assessment of fire damaged structures : case studies

Joint Authors

al-Astal, Khalil
al-Astal, Mustafa S.
Sand, Abd Allah

Source

The fifth International Conference on Engineering and Sustainability : is scheduled on November 4-5, 2014

Publisher

Islamic University of Gaza Faculty of Engineering

Publication Date

2014-11-30

Country of Publication

Palestine (Gaza Strip)

No. of Pages

13

Main Subjects

Engineering & Technology Sciences (Multidisciplinary)

English Abstract

This paper highlights the assessment / investigation of damages caused by fire on RCC structures.

For the purpose a huge RC structural systems; building of Maxco Textile Factory and Pakistan National Shipping Corporation Building (PNSC) exposed to a heavy fire in 2007 in the city of Karachi were investigated.

The preliminary investigations and detailed investigations were carried out to determine the extent of damages.

The Primary investigations done by visual inspections were not sufficient to assess the damages extent, but in their basis further investigations were recommended.

Although the concrete thermal properties are very low, it lost its strength to an alarming level in the case of Maxco textile factory but it reduced up to 25-35 % of the actual strength only in the PNSC Building.

Breaking off of concrete cover, cracks and changing in the colour of concrete surface were majority of the consequences noticed in the both buildings due to fire.

The results of the core cuter tests applied to determine the extent of damages of concrete have shown reduction in the actual strength of both steel and concrete, steel did not expose in the PNSC Building cracks were very fine and that lead to minor spalling out of concrete.

Variation in results / damaged degree between the two cases can be attributed to the time of exposure to fire and fire intensity.

Data Type

Conference Papers

Record ID

BIM-775106

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