INDIAN IRC:89- 1997 Guidelines for design and construction for road bridges

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INDIAN IRC:89- 1997 Guidelines for Design and Construction
of River Training and Control Works for Road Bridges

Author(s)/Editor(s): IRC | Size: 4,82 MB | Format: PDF | Quality: Scanner | Publisher: Indian roads congress | Year: 2012 | pages: 106

"The guidelines for design and constructions of river training and control works for road bridges" were first published in 1985. These guidelines did not include floor protection works and maintenance of the protective works. Also need for verifying the recommendations of physical model studies on mathematical model has been felt. Further, new material like geo-synthetics now find use in the strengthening of earthen embankment, slope protection and launching apron. As such need for revising the existing guidelines was felt.

SCOPE:
Cover the layout and design of river training works and approach embankment protection works for ensuring safety of the bridges and their approaches.
Is limited only to some salient aspects of design and construction of the protection works mentioned above and does not extend to the much wider associiated problems of river behaviour, control and bridge hydraulics, etc.
The necessity or otherwise of the guidebunds, spurs and other protective works has to be decided upon carefully after observing the behaviour of the river at the site under consideration. Data about the protection works at other sites on upstream or downstream of the site under consideration can also be a good guide.
Given inadequate knowledge of and uncertainties around many aspects of bridge hydraulics and river behaviour characteristics in general, these guidelines cannot obviously claim to have any general validity of application.

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