final-report-of-the-advisory-committee-on-falsework-bragg-report - Flipbook - Page 98
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Ntl recction in c.entre
tower eccentricity
eastwards loading
obout half full load
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lower eccentricity
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Results of investigations
(a) In spite of all attempts the failure could not be attributed to any specific
cause. (The railway onto which the falsework collapsed was cleared of
debris within 7 hours). Various hypotheses were advanced by engineers
associated with the investigation as to how the failure might have been
caused; however no .one was able to substantiate his case.
(b) From all opinions expressed, the collapse was associated with the failure
of the central scaffolding tower located between the rail tracks.
(c) The central tower collapsed by buckling in a bow towards the east in
a typical Euler shape but essentially remaining as a frame.
(d) Although both the first and second failures occurred in the falsework
there was no. other relation between them. The first failure was due to
splitting of weak ground bearers which failed under load whereas no
such splitting occurred in the second failure: also the failures occurred at
different locations.
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