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1 elastomeric bearings must not be placed one behind the other along the longitudinal axis of the girder on a single line of support under any
preparation for underwater inspection - availability of tools and equipment the engineer-in-charge before taking up the inspection should list out
q do you mean by accelerated agingaccelerated ageing tests are conducted at elevated temperature of 100o c to know the variation in hardness uts and
q what do you mean by ozone testsome research and studies determined that the ozone test was unnecessary as this affects only the surface layer
review of available records - preparation for underwater inspectionbefore taking up the underwater inspection a detailed review of drawings and past
q inspection and quality control certificate a lot under inspection should be accepted by the inspector when no defect is found in the acceptance
define the planning an underwater inspection planning for underwater inspection is important because of- unknown factors which may be discovered
level 2 acceptance testing this will also include the same tests as in level 1a general inspectionb test on specially moulded test piecec test on
q test for determination of ultimate compressive strengththe test pieces are to be loaded either till the failure of the steel laiminate or till the
explain the underwater inspection procedures - inspection of bridgeunder-water bridge inspection especially the initial inspection requires careful
test for determination of shear modulus conditioning load bearings shall be preloaded with maximum horizontal load htest with ntest or vertical load
1 all testing shall be done at room temperature2 no bearing shall be tested earlier than a week after vulcanization3 bearing sections shall be cut
explain the interim inspection - underwater inspection of bridgean interim inspection is an inspection scheduled at the discretion of the engineer an
q test on complete bearingstwo bearings should be selected at random from the lot various tests should be conducted on these test bearings these
define the in-depth inspections for bridgein-depth inspection is a detailed inspection of one or more members below the water level to detect any
explain situations that warrant a damage inspection- floods - bridges located in streams rivers and other waterways with known or suspected scour
test on specially moulded test piece the test piece shall be moulded by the manufacturer with identical compound and under identical vulcanizing
explain the damage inspections - underwater inspection of bridgesometimes referred to as post-event inspections damage inspections are typically
q inspection and testing the inspection and tests on elastomer and the finished bearings are very important aspects of ensuring a satisfactory
q show the properties of elastomer though elastomeric bearings offer a number of advantages as compared to steel bearings many failures have been
determine the steps for routine inspectiona routine inspection should normally include- a level i inspection on 100 of the underwater portion of the
explain the routine inspections - inspection of bridgethese determine the physical and functional condition of the structure identifying changes from
explain the inventory inspections - inspection of bridgethese inspections are normally performed following new construction modifications or repair
q design of elastomeric bearingsthe standard drawings of bridge bearings issued by rdso are on the basis of uic 772-r to maintain uniformity of
define types of inspection of bridgeunderwater inspections are generally categorised into five types- inventory- routine- damage- in-depth-